Senior Expert - Energy Grid Solver & Calculations (all genders)

Sumup

ABOUT THE TEAM At SumUp, we're on a mission to bring merchants and consumers closer together and help local communities thrive. Within the Consumer Mission, we're building a rewarding banking experience that connects people to the small businesses they love while tackling some of the most technically demanding challenges in fintech: critical infrastructure migrations, smooth, uninterrupted payment experiences, seamless open banking integrations, and high‑availability banking systems that can’t afford to fail – all while enabling free transactions for our merchants. This role sits at the heart of that work — you’ll take real ownership of backend services that are close to our consumers, directly shaping their everyday experience, with impact that’s visible and felt across the entire platform. 🎥 Take a look inside our London office WHAT YOU'LL DO * Build and maintain Backend services for Core neobanking features including bank transfers, open banking, savings accounts, and payment processing * Take end-to-end ownership of features and projects, covering scoping, design, development, testing, deployment, and maintenance, leveraging Go along with Docker and Kubernetes for container orchestration. * Take ownership of critical infrastructure migrations — including our banking core system transitions — without disrupting live customer experiences * Collaborate closely with cross-functional teams including product, design, data science, security, and operations) to understand requirements, provide technical insights, and contribute to architecture discussions that ship meaningful banking features end-to-end * Support fellow developers and actively help build a collaborative, innovative engineering culture * Shape technical architecture and lead code reviews, helping define and promote best practices in code quality, testing, automation, and security to raise the overall engineering bar. * Build and integrate tools and systems that improve operational efficiency and reliability, with strong observability through monitoring, alerting, and hands‑on involvement in incident response and post‑mortems. YOU'LL BE GREAT FOR THIS ROLE IF YOU HAVE… * Strong proficiency in Go, Kotlin or Python, with a track record of building scalable, production-grade backend services * Experience working with cloud platforms (AWS or comparable) and container orchestration tools such as Docker and Kubernetes * Solid understanding of SQL and NoSQL databases, distributed systems, and the trade-offs that come with high-availability requirements * Comfort navigating complex, regulated environments — whether that's financial services, payments, or similarly high-stakes domains * A collaborative, product-oriented mindset with the ability to work independently, communicate clearly, and adapt when priorities shift Any of the following would be considered a plus * Previous experience in a Growth-focused engineering team. * Familiarity with the Fintech or Banking regulatory landscape. No visa sponsorship available with this position WHY YOU SHOULD JOIN SUMUP * 🌎 Opportunity to work with a truly global, multicultural team from our central London Bridge location. This involves an office-first setup * 🌈 Commitment to Diversity and Inclusion: be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced * 🚀 Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp's future success * 🏖 Generous time off: enjoy 28 days of paid leave, plus bank holidays and special leaves * 📚 A dedicated annual L&D budget for attending conferences and/or advancing your career through further education * 🏥 Health matters: private health insurance, including optical and dental * 🚗 Life made easier: salary-sacrifice commuter benefits via Gogeta * 💼 Financial security: retirement scheme (SumUp matches 7% when you contribute 5%) * 🛡 Peace of mind: life insurance from MetLife for 2× your salary * 🌴 Break4me: 1-month sabbatical after 3 years of service * 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team ABOUT SUMUP Be empowered to do more that matters. At SumUp, we're on a mission to empower small businesses across the globe by providing simple and affordable tools that allow them to thrive. Today, over 4 million businesses in 37 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships. Our commitment to small businesses is reflected in our diverse team of over 3,000 SumUppers from over 90 nationalities, united by global collaboration and an innovative mindset. Our core values lay the foundation for who we are and what we stand for, shaping our work culture and driving our success. We foster inclusivity and a continuous learning culture, providing a safe space for personal and professional growth. Our differences make us unique and strong as we strive to create an environment where everyone belongs and feels supported, no matter how they identify. SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't make hiring or employment decisions based on race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited. Discover more about our culture and opportunities on our careers website, and follow our journey on LinkedIn, Instagram, and TikTok. 📽 Want to bring this role to life visually? Check out our Global Employer Brand video library to add a video to your job post or create LinkedIn content. Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

envelio

ÜBER DAS ARBEITEN BEI ENVELIO Zu einfach ist langweilig! Gemeinsam haben wir die Mission, die Energiewende voranzutreiben. Wir lieben, was wir tun und dabei ist uns kein Thema zu groß. Wir übernehmen Verantwortung für unsere Arbeit und wachsen an jeder neuen Aufgabe. Kurz gesagt: Own it, love it, grow with it. Wir sind ein bodenständiges Team aus Kaffee- und Mate-Liebhaber:innen. Unser Geek-Humor resultiert in einer rituellen Nutzung von Emojis und der enzyklopädischen Herausarbeitung von unnützem Wissen. Mehr als 150 envelianer:innen mit über 20 verschiedenen Nationalitäten sind bereits an Bord. Komm dazu und wachse mit uns! DEINE ROLLE Als Senior Backend Engineer (all genders) bist du Teil eines Entwicklerteams mit fundierten Kenntnissen in den Bereichen Programmierung, Datenbanken und Architektur. Gemeinsam treibst du die Skalierung unseres Produkts voran und gestaltest die Entwicklung unserer Nutzer, unseres Unternehmens und unserer technischen Arbeitsweisen mit.   WIE DU ETWAS BEWIRKST * Du bist Teil eines funktionsübergreifenden Teams (Backend-, Frontend- und Full-Stack-Entwickler, Design und Produktmanager) und entwickelst benutzerfreundliche Anwendungen, die einen effektiven Kundennutzen bieten  * Du konzipierst und entwickelst professionelle Backend-Lösungen, um unser Produkt in einem agilen Arbeitsumfeld kontinuierlich weiterzuentwickeln  * Du entwirfst APIs und interagierst mit ihnen, sowohl bei der externen Anbindung als auch bei der Kommunikation mit dem Frontend des Produkts  * Du entwickelst strategische Wege, um den Tech-Stack des Produkts zu modernsten Lösungen weiterzuentwickeln  * Du hast ehrgeizige Qualitätsziele und begleitest den gesamten Entwicklungsprozess, vom Konzept über die Umsetzung bis hin zu Tests und der Inbetriebnahme  * Du legst Wert auf die einfache Bedienbarkeit unseres Dienstes und triffst entsprechende Infrastrukturentscheidungen DEIN PROFIL Perfektion ist ein Mythos! Viel mehr interessiert uns der Mensch hinter dem Bildschirm. Diese Kriterien sind also eher als Orientierungshilfe für dich gedacht. Wir sind gespannt, wie deine individuellen Fähigkeiten zu uns passen. * Du verfügst über einschlägige Erfahrung in der Backend-Entwicklung von Webanwendungen und setzt neue Funktionen unterschiedlicher Komplexität eigenständig um * Du verfügst über umfassende Erfahrung mit Python, idealerweise im Zusammenhang mit der Entwicklung von oder der Interaktion mit APIs sowie der Integration in Systeme von Drittanbietern * Du hast Erfahrung mit SQL-Datenbanken für die Datenmodellierung und das query Design * Du weißt, wie man Webanwendungen zuverlässig betreibt, überwacht, Fehler behebt und Produktionsprobleme löst sowie vorbeugende Maßnahmen für die Zukunft entwirft und umsetzt * Du bist teamfähig und arbeitest leidenschaftlich gerne mit talentierten und inspirierenden Menschen zusammen   * Du suchst technische Herausforderungen und bist stolz darauf, intelligente und kreative Lösungen zu finden * Du bist mit Teilen unseres Tech-Stacks vertraut und freust dich darauf, mit den aktuellen Best Practices der Branche Schritt zu halten * Du verfügst über sehr gute Englischkenntnisse (Niveau C1) UNSER TECH STACK * Python, inkl. zusätzlichen packages/frameworks z.B., FastAPI, SQLAlchemy und Celery * PostgreSQL * RabbitMQ, Redis * Docker, Kubernetes DEINE BENEFITS * Flexibler Arbeitsort innerhalb Deutschlands: hybrid, von zu Hause aus oder in unserem schönen Office in Köln  * Option zum mobilen Arbeiten aus dem Ausland (bis drei Monate pro Jahr von überall in der EU oder den USA)  * State of the art technology und modern Tech-Stack  * Sehr gute Hardware-Ausstattung (16 Zoll MacBooks, 2 Bildschirme an deinem Arbeitsplatz)  * Unterstützung deiner Gesundheit mit der Urban Sports Club Kooperation * Professionelle Unterstützung rund um mentales Wohlbefinden für dich und deine Familie durch unseren Partner nilo * Flexible Nutzung eines monatlichen Mobilitätsbudgets (z.B. Jobrad, ÖPNV)  * Zeit und Budget für individuelles Wachstum * Regelmäßige Tech & Growth Talks für internen Wissensaustausch * optionale betriebliche Altersvorsorge  * Regelmäßige Company und Team Events

Hitachi Energy Sweden AB

You will be part of the Business Unit Grid Integration, located in Västerås. Grid and Power Quality Solutions (G&PQS) technologies provide more power and control in existing AC as well as green-field networks and have minimal environmental impact. With a complete portfolio and in-house manufacturing of key components, Hitachi Energy is a reliable partner in shaping the grid of the future. Please find out more about our world leading technology at https://www.hitachiabb-powergrids.com/offering/product-and-system/facts. At G&PQS you will create a sustainable future. If you are ready to meet the technological challenges within control and protection systems – together with a team of driven senior experts ­– then you can expect an equally exciting and ever-changing time ahead of you. You will become part of a dedicated team, in which we work together to handle all requirements from different stakeholders. Collaboration is, in other words, a central part of your new position and is a key competence which will enable you to of further career opportunities and personal growth. Your responsibilities Create concept design for our control and protection systems. Develop new business driven solutions within the domain of FACTS technology. Make architectural decisions on the existing and future product base. Coordinating with control platform supplier to ensure the compatibility of software and hardware and tools. Take new ideas from start to finish line, including offline studies, all the way to testing versus simulator or lab setups. Work in our agile teams to provide our delivery organization with new feature and applications. Your background You hold a bachelor’s or master’s degree in electrical engineering or similar As minimum 7 years relevant competence and experience within Control or electrical design. It is highly advantageous if you have worked with the MACH-platform previously. Experience in configuration management is advantageous You are a driven problem solver who eagerly takes initiative and always delivers on time and according to expectations. Naturally, contributing to our continued development motivates you. We are looking for someone with a seniority level, who has a big interest in continuing to grow and has the drive to develop new own solutions. Proficient in English since you will be part of an international setting where you will get to exchange knowledge with people from all over the world. What we offer Collective agreement Flexible working time Health care and wellness allowance Fantastic career possibilities within Hitachi Energy both within Sweden and globally Mentor to support you throughout onboard phase Various trainings and education supporting employee development​ Diversified company with over 70+ nationalities working in Sweden Supplementary compensation for parental leave Employee Benefit Portal with thousands of discounts and perks More about us Are you ready for an exciting new challenge? Does the above description sound like you? Welcome to apply! Our selection process is continuous, and the position may be closed before the advertisement expires. So, if you are interested – don’t delay, apply today! Recruiting Manager, Majid Fazlali +46 725124080 will answer your questions about the position. Union representatives - Sveriges Ingenjörer: Stefan Andersson, +46 10 7-38 08 21; Ledarna: Christer Fridlund, +46 107-38 29 12; Unionen: Karin Ulvemark, +46 107-38 51 42. All other questions can be directed to Talent Acquisition Julia Wiklund, Julia.wiklund1@hitachienergy.com Hitachi Energy is a global technology leader that is advancing a sustainable energy future for all. We serve customers in the utility, industry and infrastructure sectors with innovative solutions and services across the value chain. Together with customers and partners, we pioneer technologies and enable the digital transformation required to accelerate the energy transition towards a carbon-neutral future. We are advancing the world’s energy system to become more sustainable, flexible and secure whilst balancing social, environmental and economic value. Hitachi Energy has a proven track record and unparalleled installed base in more than 140 countries. Headquartered in Switzerland, we employ around 40,000 people in 90 countries and generate business volumes of approximately $10 billion USD. www.hitachienergy.com