VAROPreem

Är du redo för en ny utmaning som rörinspektör? Ett roligt och varierande arbete men många olika kontaktytor! Om rollen Nu har du möjlighet att få jobba som Rörinspektör hos vår Inspektionsavdelning i Lysekil i ett långvarigt vikariat, som sträcker sig till 31 oktober 2028. Som Inspektör har du omväxlande arbetsuppgifter med många kontaktytor gentemot hela vår verksamhet. Du kommer att arbeta i ett team som hjälper varandra i den dagliga verksamheten. Erfarenheten i teamet är varierande, allt från nya till erfarna Inspektörer vilket vi ser som en styrka. Avdelningen består av åtta medarbetare och en avdelningschef. Huvudsakliga arbetsuppgifter Planera, leda och genomföra våra inspektions- och provningsprogram för Raffinaderiets trycksatta anordningar Dokumentera utförda inspektions- och provningsprogram i vårt digitala inspektionsdataprogram Kontinuerligt förbättra kvaliteten i vårt arbetssätt. Medverka vid utredningar av avvikelser och skador Vi erbjuder dig Du blir en viktig del av VAROPreem – en arbetsplats som präglas av välkomnande stämning, förtroende för medarbetarna och goda utvecklingsmöjligheter. Energimarknaden genomgår den största omställningen på flera decennier. Därför arbetar vi utifrån syftet att tillgodose dagens energibehov och att driva utvecklingen mot morgondagens mer hållbara energilösningar. Hos oss får du frihet under ansvar och uppmuntras att ta egna initiativ för att utveckla verksamheten framåt. Har du den här bakgrunden Vi söker dig som har flerårig erfarenhet inom processindustrin, kärnkraft eller från liknande bransch. Erfarenhet av följande ser vi som meriterande: Driftserfarenhet av processanläggning Svets och metallurgi Kvalitetsdokumentation Oförstörande provning Degraderingsmekanismer Rör- eller processdesign Kunskap om tryckkärlsdirektiv Relaterade föreskrifter och standarder Utbildningsmässigt ser vi att du har en teknisk utbildning på gymnasie- eller högskolenivå. Goda kunskaper i svenska och engelska då båda språken krävs i det dagliga arbetet. Är det här du Du har en positiv attityd, är strukturerad, ansvarstagande, analytisk och drivande i ditt arbete. Då du kommer att ha många kontakter både inom och utanför företaget i ditt dagliga arbete, trivs du med att skapa samarbete och bygga relationer med andra. Nästa steg Vi ser fram emot din ansökan så snart som möjligt, men allra senast 2/11 2026. Du ansöker genom att bifoga CV samt besvara urvalsfrågor. För att säkra objektiva bedömningar använder vi tester i samband med urval. Då vi tillämpar löpande urval så kan rollen komma att tillsättas innan sista ansökningsdatum. Om du har frågor om rollen är du välkommen att kontakta britt-marie.siggelin@varopreem.se . Har du frågor om rekryteringsprocessen är du välkommen att kontakta Beata Jansson, beata.jansson@varopreem.se . Då VAROPreem bedriver samhällsviktig verksamhet genomförs alltid bakgrundskontroll samt alkohol-& drogtest inför ett anställningserbjudande. Vid intervju ska godkänd ID-handling i form av ett pass eller nationellt ID-kort, alternativt folkbokföringsbevis tillsammans med giltigt körkort kunna uppvisas. VAROPreem bedriver till del säkerhetskänslig verksamhet varför säkerhetsprövning med registerkontroll kommer att genomföras om befattningen så kräver. Säkerhetsprövningen genomförs i enlighet med bestämmelser i säkerhetsskyddslagen. Facklig kontaktperson finns här . Varmt välkommen med din ansökan!

Do you thrive in transformation environments and have the leadership capability to take procurement to the next level? We are looking for a Procurement Development Manager who will play a pivotal role in shaping the future of procurement within a leading international energy company. About the Role As Procurement Development Manager, you will own and deliver the Procurement Development roadmap, leading a multi-year transformation agenda across our global organization. You will work closely with senior leaders and business stakeholders to establish world-class procurement practices, strengthen organizational capabilities, and ensure procurement is recognized as a strategic business partner. This is a unique opportunity to lead a global procurement transformation journey in a company that is actively contributing to the energy transition and helping build a more sustainable future. You will be responsible for driving procurement excellence across processes, governance, digitalization, capability building, ESG, and supplier management while influencing stakeholders across multiple countries, cultures, and business functions. The position can be based in Stockholm, Gothenburg, Baar or Cressier depending on preferred location. Key responsibilities Standardize and continuously improve Source-to-Pay (S2P) processes and governance across the organization. Design and implement best-practice procurement policies, frameworks, and playbooks that can be applied across countries, legal entities, and categories. Develop and maintain procurement tools strategy, including solutions such as eSourcing, Contract Lifecycle Management, supplier portals, and analytics platforms. Establish common procurement data standards, KPI frameworks, and performance reporting structures to enable global transparency and comparability. Drive change management and adoption of new tools, processes, and ways of working across Procurement, Finance, Operations, and the wider business. Lead and inspire a highly diverse and international team, creating a culture of growth, collaboration, courage, and continuous improvement. We offer At VAROPreem, you will join a welcoming and collaborative workplace where trust, personal responsibility, and professional development are highly valued. As the energy sector undergoes its most significant transformation in decades, you will have the opportunity to contribute to both today's energy needs and tomorrow's more sustainable solutions. We offer a high degree of autonomy and encourage employees to take initiative, challenge established ways of working, and help shape the future of our business. About you You are a strategic and transformational leader who thrives on challenging the status quo and translating vision into tangible business results. You combine deep procurement expertise with strong commercial acumen, a data-driven mindset, and exceptional relationship-building skills. You are confident influencing senior stakeholders and navigating complex environments, while remaining pragmatic, collaborative, and focused on bringing people along the transformation journey. With your leadership experience and ability to inspire others, you create engagement, build high-performing teams, and drive sustainable change across international organizations. Requirements We believe you bring: Extensive experience within procurement, procurement development, organizational development, transformation, or functional excellence. Proven success leading large-scale, multi-year transformation programs across international organizations. Strong Source-to-Pay (S2P) expertise with practical experience in process design, optimization, and implementation. Excellent change management and stakeholder engagement skills. Experience working closely with executive leadership and cross-functional stakeholders. A commercial mindset and the ability to identify opportunities that create business value. Experience from energy, oil & gas, refining, chemicals, manufacturing, infrastructure or other regulated and asset- intensive industries is highly desirable. Experience implementing or optimizing procurement technology platforms and digital procurement solutions. Fluent in English French and Swedish language skills are considered an advantage. Next steps We look forward to receiving your application as soon as possible, but no later than 28 October 2026. Applying is easy – simply submit your CV or link your LinkedIn profile and answer a few screening questions. If you choose to apply with your LinkedIn profile and progress in the process, you will be asked to provide a CV at a later stage. To ensure an objective and fair selection process, we use assessment tests as part of our recruitment process. As we apply continuous selection, the role may be filled before the application deadline. If you have any questions about the role or the recruitment process, you are welcome to contact Hiring manager Camilla Dimberg, camilla.dimberg@varopreem.se or Recruitment Partner Jennie Lundqvist, jennie.lundqvist@varopreem.se. As VAROPreem operates within critical infrastructure, a background screening as well as alcohol and drug testing will be conducted prior to any employment offer. During the interview process, candidates must be able to present a valid form of identification, such as a passport or national identity card, alternatively a population registration certificate together with a valid driving licence. As parts of VAROPreem’s operations are subject to security-sensitive regulations, a security clearance, including a background check through official registers, may be required depending on the position. Any such security screening will be conducted in accordance with the provisions of the Swedish Security Protection Act. The union contact person can be found here. Welcome with your application!

Do you thrive in transformation environments and have the leadership capability to take procurement to the next level? We are looking for a Procurement Development Manager who will play a pivotal role in shaping the future of procurement within a leading international energy company. About the Role As Procurement Development Manager, you will own and deliver the Procurement Development roadmap, leading a multi-year transformation agenda across our global organization. You will work closely with senior leaders and business stakeholders to establish world-class procurement practices, strengthen organizational capabilities, and ensure procurement is recognized as a strategic business partner. This is a unique opportunity to lead a global procurement transformation journey in a company that is actively contributing to the energy transition and helping build a more sustainable future. You will be responsible for driving procurement excellence across processes, governance, digitalization, capability building, ESG, and supplier management while influencing stakeholders across multiple countries, cultures, and business functions. The position can be based in Stockholm, Gothenburg, Baar or Cressier depending on preferred location. Key responsibilities Standardize and continuously improve Source-to-Pay (S2P) processes and governance across the organization. Design and implement best-practice procurement policies, frameworks, and playbooks that can be applied across countries, legal entities, and categories. Develop and maintain procurement tools strategy, including solutions such as eSourcing, Contract Lifecycle Management, supplier portals, and analytics platforms. Establish common procurement data standards, KPI frameworks, and performance reporting structures to enable global transparency and comparability. Drive change management and adoption of new tools, processes, and ways of working across Procurement, Finance, Operations, and the wider business. Lead and inspire a highly diverse and international team, creating a culture of growth, collaboration, courage, and continuous improvement. We offer At VAROPreem, you will join a welcoming and collaborative workplace where trust, personal responsibility, and professional development are highly valued. As the energy sector undergoes its most significant transformation in decades, you will have the opportunity to contribute to both today's energy needs and tomorrow's more sustainable solutions. We offer a high degree of autonomy and encourage employees to take initiative, challenge established ways of working, and help shape the future of our business. About you You are a strategic and transformational leader who thrives on challenging the status quo and translating vision into tangible business results. You combine deep procurement expertise with strong commercial acumen, a data-driven mindset, and exceptional relationship-building skills. You are confident influencing senior stakeholders and navigating complex environments, while remaining pragmatic, collaborative, and focused on bringing people along the transformation journey. With your leadership experience and ability to inspire others, you create engagement, build high-performing teams, and drive sustainable change across international organizations. Requirements We believe you bring: Extensive experience within procurement, procurement development, organizational development, transformation, or functional excellence. Proven success leading large-scale, multi-year transformation programs across international organizations. Strong Source-to-Pay (S2P) expertise with practical experience in process design, optimization, and implementation. Excellent change management and stakeholder engagement skills. Experience working closely with executive leadership and cross-functional stakeholders. A commercial mindset and the ability to identify opportunities that create business value. Experience from energy, oil & gas, refining, chemicals, manufacturing, infrastructure or other regulated and asset- intensive industries is highly desirable. Experience implementing or optimizing procurement technology platforms and digital procurement solutions. Fluent in English French and Swedish language skills are considered an advantage. Next steps We look forward to receiving your application as soon as possible, but no later than 28 October 2026. Applying is easy – simply submit your CV or link your LinkedIn profile and answer a few screening questions. If you choose to apply with your LinkedIn profile and progress in the process, you will be asked to provide a CV at a later stage. To ensure an objective and fair selection process, we use assessment tests as part of our recruitment process. As we apply continuous selection, the role may be filled before the application deadline. If you have any questions about the role or the recruitment process, you are welcome to contact Hiring manager Camilla Dimberg, camilla.dimberg@varopreem.se or Recruitment Partner Jennie Lundqvist, jennie.lundqvist@varopreem.se . As VAROPreem operates within critical infrastructure, a background screening as well as alcohol and drug testing will be conducted prior to any employment offer. During the interview process, candidates must be able to present a valid form of identification, such as a passport or national identity card, alternatively a population registration certificate together with a valid driving licence. As parts of VAROPreem’s operations are subject to security-sensitive regulations, a security clearance, including a background check through official registers, may be required depending on the position. Any such security screening will be conducted in accordance with the provisions of the Swedish Security Protection Act. The union contact person can be found here . Welcome with your application!

Vill du bidra till omställningen mot en mer hållbar framtid samtidigt som du arbetar med några av Sveriges mest komplexa miljöfrågor? Nu söker vi en miljöingenjör som vill vara med och utveckla vårt arbete inom markmiljö och miljöefterlevnad. Hos oss får du en specialistroll där du arbetar nära verksamheten och bidrar med din expertis i frågor som har stor betydelse för både verksamhet och miljö. Om rollen Som miljöingenjör på VAROPreem arbetar du i hjärtat av verksamhetens miljöarbete med fokus på mark och förorenade områden. I rollen kombinerar du specialistkunskap med verksamhetsnära rådgivning och får möjlighet att påverka både den dagliga driften och den långsiktiga utvecklingen inom miljöområdet. Du samarbetar tätt med drift, projektorganisationer, myndigheter och externa samarbetspartners för att säkerställa efterlevnad av lagkrav, tillståndsvillkor och högt ställda miljömål. Samtidigt bidrar du aktivt till att utveckla arbetssätt, processer och lösningar som stärker verksamhetens miljöprestanda. Som en del av VAROPreems miljöavdelning blir du en av 11 specialister som tillsammans utgör en viktig kompetensresurs för raffinaderiet. Här möts djup expertkunskap, stort engagemang och ett gemensamt fokus på att skapa långsiktigt hållbara lösningar för verksamheten. Tjänsten är en tillsvidareanställning med start enligt överenskommelse. Placering är vid vårt raffinaderi i Göteborg. Vi tillämpar ett Office First-arbetssätt, vilket innebär att du som huvudregel arbetar från kontoret fyra dagar per vecka och har möjlighet att arbeta hemifrån en dag per vecka när verksamheten och arbetsuppgifterna tillåter. Huvudsakliga arbetsuppgifter Ansvara för uppföljning, utvärdering och rapportering enligt kontrollprogram, lagstiftning och andra externa krav. Samordna och administrera arbete med laboratorieanalyser inom markärenden. Utveckla, implementera och följa upp rutiner och arbetssätt kopplade till markmiljöfrågor. Ge stöd och rådgivning till verksamheten i mark- och miljöärenden. Ansvara för lagbevakning och lagefterlevnadskontroll inom miljöområdet. Delta i utredningar, projekt och utbildningsinsatser som miljöstöd. Medverka i arbetet kring avvikelser, incidenter och förbättringsinitiativ. Ansvara för rapportering till myndigheter inom ansvarsområdet. Delta i planering och uppföljning av mål och aktivitet Vi erbjuder dig Du blir en viktig del av VAROPreem – en arbetsplats som präglas av välkomnande stämning, förtroende för medarbetarna och goda utvecklingsmöjligheter. Energimarknaden genomgår den största omställningen på flera decennier. Därför arbetar vi utifrån syftet att tillgodose dagens energibehov och att driva utvecklingen mot morgondagens mer hållbara energilösningar. Hos oss får du frihet under ansvar och uppmuntras att ta egna initiativ för att utveckla verksamheten framåt. Har du den här bakgrunden Civilingenjörsexamen eller motsvarande utbildning inom miljö, kemi, processteknik eller annat relevant område. Erfarenhet av arbete med miljöfrågor, gärna inom markmiljö och förorenade områden. God kunskap om miljölagstiftning och myndighetskontakter. God kommunikativ förmåga på svenska och engelska, både i tal och skrift. Det är meriterande om du har: Erfarenhet från processindustrin. Erfarenhet av arbete som konsult inom miljöområdet. Erfarenhet av tillståndsfrågor, miljöutredningar eller efterbehandling av förorenade områden. Är det här du Vi söker dig som har ett genuint miljöengagemang och som trivs i en roll där du får kombinera specialistkunskap med samarbete och verksamhetsstöd. Du arbetar strukturerat och analytiskt, har god förmåga att prioritera och känner dig trygg i dialogen med såväl myndigheter som interna intressenter. Nästa steg Vi ser fram emot din ansökan så snart som möjligt, men allra senast 2 november 2026. Du ansöker smidigt genom att bifoga CV eller länka till din LinkedIn‑profil, samt svara på urvalsfrågor. Om du väljer att ansöka med din LinkedIn‑profil och går vidare i processen, så kommer du att ombes att komplettera med CV i ett nästa steg. För att säkra objektiva bedömningar använder vi tester i samband med urval. Då vi tillämpar löpande urval så kan rollen komma att tillsättas innan sista ansökningsdatum. Om du har frågor om rollen eller rekryteringsprocessen är du välkommen att kontakta Sara Lidholm, Head of Environment, sara.lidholm@varopreem.se eller Asrin Ali- Zadeh, Rekryteringspartner, asrin.ali-zadeh@varopreem.se . Då VAROPreem bedriver samhällsviktig verksamhet genomförs alltid bakgrundskontroll samt alkohol-& drogtest inför ett anställningserbjudande. Vid intervju ska godkänd ID-handling i form av ett pass eller nationellt ID-kort, alternativt folkbokföringsbevis tillsammans med giltigt körkort kunna uppvisas. VAROPreem bedriver till del säkerhetskänslig verksamhet varför säkerhetsprövning med registerkontroll kommer att genomföras om befattningen så kräver. Säkerhetsprövningen genomförs i enlighet med bestämmelser i säkerhetsskyddslagen. Facklig kontaktperson finns här . Varmt välkommen med din ansökan!

What will gasoline look like in a future shaped by increasingly ambitious sustainability requirements? The transportation sector is undergoing a major transformation, creating a need for new fuel solutions that combine high performance, reduced climate impact, and compliance with future regulations. One of the key challenges is increasing the share of renewable components in gasoline without compromising quality, stability, or functionality. As a thesis student at VAROPreem, you will have the opportunity to contribute to this development by investigating the potential of a gasoline blend containing up to 20 vol% ethanol and 80 vol% hydrocarbons. By combining literature studies, laboratory experiments, and data analysis, you will explore how different hydrocarbon compositions influence fuel properties and the ability to meet future quality requirements. This is a unique opportunity for students in Chemical Engineering, Chemistry, or related disciplines who are interested in working on a real industrial challenge at the intersection of organic chemistry, fuel technology, and mathematical modelling. The results may contribute to the development of future gasoline products for the European market and support Europe's transition towards more sustainable transportation in line with the Fit for 55 initiative. Field of study/Subject Gasoline sold on the Swedish and European markets must comply with both national legislation and European fuel standards. Increasing the ethanol content in gasoline can help reduce greenhouse gas emissions, but it also introduces significant technical challenges. Ethanol affects several key fuel properties, including vapour pressure, energy content, distillation characteristics, and material compatibility. One particularly important question is how higher ethanol concentrations influence gasoline vapour pressure and how these changes affect vehicle start-up and driving performance under different climate conditions. At the same time, the fuel must continue to meet octane rating requirements. Although ethanol has excellent octane-boosting properties, increasing the ethanol content changes the need for different hydrocarbon components in the gasoline blend. Developing a future E20 gasoline therefore requires a deep understanding of the interplay between ethanol, hydrocarbons, vapour pressure, and octane number, as well as how refinery blending components can be optimized to meet future specification requirements. Purpose The purpose of this thesis project is to increase knowledge of how a future E20 gasoline can be formulated and produced to meet quality, performance, and sustainability requirements. The results will support VAROPreem's long-term development of future gasoline products for the European market. By improving our understanding of the relationship between ethanol content, hydrocarbon composition, vapour pressure, and octane number, the project can contribute to the development of fuels that combine high performance with a reduced climate impact. Thesis Goals The goals of the thesis are to: Conduct a literature review of previous research and experience related to gasoline with higher ethanol content. Identify the fuel properties that are critical for an E20 gasoline blend. Design and carry out laboratory experiments based on data and guidance provided by VAROPreem. Develop a proposal for an E20 gasoline specification with the potential to meet relevant quality and regulatory requirements. Identify blending and optimization strategies that could enable the introduction of a future E20 gasoline product. Scope 30 ECTS credits Location Gothenburg. The project will primarily be based at the Gothenburg refinery. VAROPreem does not reimburse travel expenses to and from the refinery. Start Date January or early February 2026, or as agreed. What We Offer You will become an important part of VAROPreem, a workplace characterized by a welcoming atmosphere, trust, and strong opportunities for personal and professional development. The energy market is undergoing its most significant transformation in decades. Our purpose is to meet today's energy needs while driving the development of tomorrow's more sustainable energy solutions. At VAROPreem, you will be given freedom with responsibility and encouraged to take initiative and contribute to the continued development of our business. Do you have this background? We welcome applicants pursuing a master's degree in fields such as: Chemical Engineering Organic Chemistry Chemical Physics Chemistry and Mathematical Modelling Or another related discipline Is this you? We believe you are someone who enjoys exploring technical challenges in depth and is motivated by understanding how things work. You are curious, analytical, and enjoy tackling problems that do not always have straightforward answers. As a thesis student at VAROPreem, you will have significant freedom to drive your work forward while receiving support from experienced colleagues. We are therefore looking for someone who takes ownership of their work, shows initiative, and enjoys collaborating with others. We place great importance on your interest in the project, your approach to work, and your willingness to contribute new perspectives. Next Step If you have any questions regarding the thesis project, please contact: Malin Berglund Product Quality Manager +46 70 577 16 82 malin.berglund@varopreem.se If two students wish to carry out the thesis project together, we ask that one person submits the application and includes both CVs. One CV should be uploaded as usual, while the second should be uploaded under Additional Documents . Applications are reviewed on an ongoing basis, and the thesis position may be filled before the application deadline. We therefore encourage you to submit your application as soon as possible, but no later than 27 October 2026 . Due to GDPR regulations, we do not accept applications via email. Union representative contact information is available here. We look forward to receiving your application!

Can a small contamination have major consequences for the sustainable fuels of the future? VAROPreem sources, stores, transports, produces, distributes, and markets renewable liquid fuels. Throughout the value chain, we work to ensure that our products comply with regulatory requirements and meet the highest quality standards. One of our most important renewable products is HVO (Hydrotreated Vegetable Oil), a paraffinic diesel fuel used as an alternative to conventional fossil diesel. Although HVO has been on the market for many years, there is still limited knowledge about how the fuel behaves throughout the supply chain and under different contamination scenarios. Field of study/Subject HVO (Hydrotreated Vegetable Oil) plays a key role in the transition towards more sustainable transportation and is one of the most important renewable alternatives to fossil diesel. Maintaining product quality throughout the supply chain requires a solid understanding of how HVO behaves during storage, transportation, and distribution. In practice, HVO may come into contact with other fuels and petroleum products at various stages of the logistics chain. Even small amounts of contamination can influence fuel properties and product quality. As the share of renewable fuels continues to grow, understanding these interactions becomes increasingly important for ensuring both product performance and regulatory compliance. Purpose The purpose of this thesis is to improve our understanding of the physical and chemical properties of HVO and investigate how the fuel is affected by contact with other fuels and petroleum products throughout the supply chain. The project aims to identify factors that influence product quality and increase understanding of potential risks associated with the storage, transportation, and distribution of HVO. Thesis Goals The goals of the thesis are to: Conduct a literature review of HVO's physical and chemical properties as well as previous research within the field. Identify and analyse quality-related risks associated with the handling, storage, and distribution of HVO. Investigate how HVO interacts with other fuels and petroleum products. Design and carry out laboratory experiments, where relevant, to study selected research questions. Compile conclusions and recommendations that can support quality assurance efforts across VAROPreem's value chain. Scope 30 ECTS credits Location Gothenburg. The project will primarily be based at the Gothenburg refinery. VAROPreem does not reimburse travel expenses to and from the refinery. Start Date January or early February 2026, or as agreed. What We Offer You will become an important part of VAROPreem, a workplace characterized by a welcoming atmosphere, trust in employees, and strong opportunities for professional development. The energy market is undergoing its most significant transformation in decades. Therefore, we are driven by the purpose of meeting today’s energy needs while accelerating the transition toward tomorrow’s more sustainable energy solutions. At VAROPreem, you will be given freedom with responsibility and encouraged to take initiative and contribute to the continued development of our business. Do you have this background? We are looking for one or two master's students with an interest in fuels, product quality, and chemical processes. You are currently studying within a field such as: Physical Chemistry Organic Chemistry Analytical Chemistry Chemical Engineering Or another related discipline Is this you? You enjoy exploring technical challenges and are motivated by understanding how things work. You are curious, analytical, and enjoy tackling problems that do not always have straightforward answers. As a thesis student at VAROPreem, you will have considerable freedom to drive your work forward while receiving support from experienced colleagues. We are therefore looking for someone who takes ownership of their work, shows initiative, and enjoys working collaboratively. We place great importance on your interest in the project, your approach to problem-solving, and your ability to contribute with new perspectives. Next step If you have any questions regarding the thesis project, please contact: Anna Lutz Product and Sustainability Specialist anna.lutz@varopreem.se If two students wish to complete the thesis together, we ask that one person submits the application and includes both CVs. One CV should be uploaded as usual, while the second should be attached under Additional Documents . Applications are reviewed on an ongoing basis, and the position may be filled before the application deadline. We therefore encourage you to submit your application as soon as possible, but no later than 27 October 2026 . Due to GDPR regulations, we do not accept applications via email. Union representative contact information is available here. We look forward to receiving your application!

Are you interested in catalysis, renewable feedstocks, and the fuels of the future? In this master's thesis project, you will investigate how resin acids and sterols can be upgraded to reduce the aromatic content in HVO100 and contribute to the development of sustainable transportation fuels. Field of study/Subject VAROPreem currently produces renewable fuels from feedstocks such as fats, oils, and pyrolysis oil derived from biomass at its refineries in Gothenburg and Lysekil. These feedstocks contain a wide range of chemical compounds that must be converted to meet stringent requirements for product quality and performance. Among these compounds are resin acids and sterols, which are more complex molecules and often more challenging to process than other feedstock components. To enable increased utilization of renewable feedstocks while maintaining high product quality, new solutions are needed to efficiently convert these compounds. Successful upgrading of resin acids and sterols can help reduce the aromatic content of HVO100, improve fuel properties, and create more robust production processes for future renewable fuels. This thesis project focuses on investigating how these compounds can be selectively and resource-efficiently converted with minimal impact on other refinery processes. Purpose The purpose of this master's thesis is to investigate how resin acids and sterols can be converted into fuel components that meet the quality requirements for HVO100. The project focuses on identifying process conditions and catalyst solutions that enable efficient conversion of these more challenging feedstock components while maintaining a high conversion rate for other renewable feedstock constituents. The work will be carried out through laboratory-scale experiments in which renewable feedstocks are hydrotreated using both existing and modified catalysts. Feedstocks, products, and catalysts will be analyzed and characterized, and the results will be used to evaluate which conditions provide the best product quality and process performance. This project offers the opportunity to combine laboratory work with data analysis while contributing to the development of future renewable fuels. Thesis Goals The objective of this master's thesis is to identify catalyst and process solutions that enable efficient conversion of resin acids and sterols into components that meet HVO100 quality specifications. The results are expected to increase understanding of how these feedstock components can be utilized in existing production processes and thereby strengthen opportunities to expand the use of renewable feedstocks in future fuel production. Scope 30 ECTS credits Location Gothenburg. The project will primarily be based at the Gothenburg refinery. VAROPreem does not reimburse travel expenses to and from the refinery. This project is carried out in collaboration with Chalmers University of Technology and utilizes laboratory facilities and expertise available at Chalmers. As the project is largely experimental, regular on-site presence in Gothenburg is required, typically around four days per week. Remote work is therefore limited. We welcome applications from qualified students from all universities and higher education institutions. The assignment starts January or early February 2026, or as agreed. We offer You will become an important part of VAROPreem, a workplace characterized by a welcoming atmosphere, trust in employees, and strong opportunities for professional development. The energy market is undergoing its most significant transformation in decades. Therefore, we are driven by the purpose of meeting today’s energy needs while accelerating the transition toward tomorrow’s more sustainable energy solutions. At VAROPreem, you will be given freedom with responsibility and encouraged to take initiative and contribute to the continued development of our business. Do you have this background? We are looking for a student pursuing a Master of Science in Chemical Engineering or an equivalent master's-level degree. An interest in catalysis, chemical processes, and sustainable fuel development is considered an advantage. Is this you? We believe you are someone who enjoys exploring technical challenges in depth and is motivated by understanding how things work. You are curious, analytical, and enjoy tackling problems that do not always have obvious answers. As a thesis student at VAROPreem, you will have considerable freedom to drive your work forward while receiving support from experienced colleagues. Therefore, we are looking for a self-motivated individual who takes ownership of their work, shows initiative, and enjoys collaborating with others. We place great emphasis on your interest in the project, your approach to work, and your willingness to contribute with new perspectives. Next step If you have any questions about the thesis, you are welcome to contact: Olov Öhrman R&D Manager olov.ohrman@varopreem.se. If you are two applicants who want to complete the degree project together, we ask that one of you apply but that you each attach your CV in the application. One CV is added as usual and the other CV you upload under "Additional files” (“Övriga document”). Selection takes place continuously during the advertising period and the degree project may be filled before the application period ends. Please submit your application as soon as possible, but no later than 27 October 2026 . Due to GDPR we only accept applications submitted through the recruitment system. We look forward to receiving your application!

Field of study/Subject As the demand for sustainable fuels continues to grow, efficient utilization of feedstocks is becoming increasingly important. In refinery and terminal operations, different products are transported through shared pipelines and storage systems, where they come into contact and mix at product interfaces. The formation and behaviour of these mixing zones can affect product quality, product losses, and overall operational efficiency. By simulating and visualizing flow behaviour in complex transport systems, it is possible to improve our understanding of how products interact and identify opportunities for optimization throughout the value chain. Purpose This thesis explores how simulation models can be used to visualize and better understand mixing phenomena in fuel transport systems. The project will investigate how factors such as injection rates and product properties influence mixing interfaces and how these effects can be represented visually within a complex flow system. The overall aim is to improve understanding of the physical mechanisms governing product mixing and to evaluate how this knowledge can support optimization of refinery and terminal operations. Thesis Goals The goals of the thesis are to: Conduct a literature review of previous research and industrial applications related to mixing phenomena and flow simulations. Develop simulation cases based on operational data and information provided by VAROPreem. Perform simulations using appropriate modelling tools. Visualize how different feedstocks and products interact at interfaces under varying operating conditions. Analyse the results and identify opportunities for operational optimization. Scope 30 ECTS credits Location Gothenburg. The project will primarily be based at the Gothenburg refinery. VAROPreem does not reimburse travel expenses to and from the refinery. Start Date January or early February 2026, or as agreed. What We Offer You will become an important part of VAROPreem, a workplace characterized by a welcoming atmosphere, trust in employees, and strong opportunities for professional development. The energy market is undergoing its most significant transformation in decades. Therefore, we are driven by the purpose of meeting today’s energy needs while accelerating the transition toward tomorrow’s more sustainable energy solutions. At VAROPreem, you will be given freedom with responsibility and encouraged to take initiative and contribute to the continued development of our business. Your Background You are currently pursuing a Master of Science degree or a master's-level education in areas such as: Chemical Engineering Engineering Physics Chemistry with a focus on modelling or computational science Another related field with an emphasis on simulation and data analysis Experience in one or more of the following areas is considered an advantage: Fluid Mechanics Computational Fluid Dynamics (CFD) Numerical Modelling and Simulation Data Analysis and Visualization Experience with software such as COMSOL Multiphysics, MATLAB, STAR-CCM+, Aspen HYSYS, or similar simulation tools is beneficial but not required. Is this you? We believe you are someone who enjoys exploring technical challenges in depth and is motivated by understanding how things work. You are curious, analytical, and enjoy tackling problems that do not always have obvious answers. As a thesis student at VAROPreem, you will have considerable freedom to drive your work forward while receiving support from experienced colleagues. Therefore, we are looking for a self-motivated individual who takes ownership of their work, shows initiative, and enjoys collaborating with others. We place great emphasis on your interest in the project, your approach to work, and your willingness to contribute with new perspectives. Next step If you have any questions about the thesis, you are welcome to contact Malin Berglund, Product Specialist Planning and Optimizing, malin.berglund@varopreem.se . If you are two applicants who want to complete the degree project together, we ask that one of you apply but that you each attach your CV in the application. One CV is added as usual and the other CV you upload under "Additional files”. Selection takes place continuously during the advertising period and the degree project may be filled before the application period ends. Please submit your application as soon as possible, but no later than 27 October 2026 . Due to GDPR we only accept applications submitted through the recruitment system. We look forward to receiving your application!