Infrastructure Engineer

Ants Akademiskt Nätverk av Tekniska Studenter AB

Be a part of the next big thing Do you thrive on tackling complex challenges? Are you passionate about creating impactful solutions that drive commerce forward? Do you believe in encouraging and elevating those around you? About us Kustom, formerly known as Klarna Checkout (KCO), is the leading digital checkout solution provider in the Nordic market. Today, we support over 24,000 merchants across more than 170 countries, providing a streamlined checkout experience. We offer localized solutions in 18 markets, tailored to specific languages, currencies, and payment methods. No matter where businesses operate, we deliver a checkout experience that meets the needs of both merchants and shoppers—driving growth globally. 🌍 The role As a Junior Infrastructure Engineer at Kustom, you’ll play a key role in building and evolving the platform that powers one of the most trusted checkout solutions in the Nordics. You’ll work across cloud infrastructure, data, networking, and observability to ensure our systems remain secure, scalable, and resilient as we continue to grow. You’ll collaborate closely with engineers across product, backend, and data to design solutions that support high availability and low latency. In this role, you will work closely with more experienced engineers and gradually take on more responsibility as you grow into the role. This role is perfect for someone who enjoys solving hard technical problems, driving automation, and enabling teams to ship with confidence. Things you'll be doing Contributing to the design, build, and maintenance of scalable cloud infrastructure on AWS to support high-traffic, mission-critical systems Managing and improving our Kubernetes environments, ensuring smooth deployments, strong security, and reliable performance Implementing Infrastructure as Code using Terraform to automate provisioning, configuration, and change management Working with and learning about observability across services using Datadog (metrics, tracing, alerting) Contributing to work related to PostgreSQL databases, including schema design, indexing, and performance tuning. Working with event-driven systems and streaming platforms like Kafka to support real-time data flows Collaborating with backend teams to design and deliver resilient architectures and efficient deployment pipelines Driving continuous improvements in automation, tooling, and reliability across our infrastructure Troubleshooting complex production issues related to performance, scaling, networking, or distributed systems Contributing to documentation, best practices, and cross-team knowledge sharing Skills and experience you'll need Bachelor’s degree in Computer Science, Engineering, or a related field Extensive hands-on experience with Amazon Web Services core services (EC2, CloudFront, RDS, S3, etc.) Experience with or exposure to Kubernetes and container orchestration Proficiency with Infrastructure as Code (Terraform or similar tools) Solid understanding of networking fundamentals (VPC, routing, load balancing, DNS) Experience with observability platforms like Datadog for metrics, tracing, and alerting Solid knowledge of PostgreSQL, including schema design, indexing, and query optimization Familiarity with event-driven architectures and data technologies such as Kafka Strong programming skills in Java (Spring Boot) Proficient in Git for version control and collaboration We believe you'll thrive in this role if you have Passion for building reliable, automated, and secure infrastructure at scale Experience working with production systems and an interest in learning how to operate high-availability environments Ability to diagnose and solve technical problems with support from the team An interest in automation and improving systems over time Excellent communication skills with the ability to collaborate across teams and explain complex systems clearly Strong commitment to infrastructure-as-code, testing, and high-quality documentation Benefits Robust pension plan with national and occupational components Excellent health insurance coverage, including long-term illness protection and salary exchange options Annual wellness allowance of 3,000 SEK to invest in your health and fitness Extra day off when major holidays (e.g., Christmas Eve, New Year's Eve) fall on weekends Continuous learning opportunities and professional development support A place to grow At Kustom, you won’t just be another face in the crowd. This is a place where we elevate each other and celebrate success as a team. We believe in our ability to create excellence - and have fun doing it! We know we set high expectations, but we also know that the road to success isn’t a straight line. We support and encourage each other to try, to fail, to try again. Because that’s how we grow, individually and together. Does this sound like the place for you? About your application Please apply in English. At Kustom, we welcome everyone! We don’t care where you’re from, whom you love, or what kind of food is your favorite. We believe in inclusivity for all. Given the above, we treat all candidates the same! That’s why we have this awesome recruitment tool to keep track of all the amazing talents that apply - so please; apply through the system, and we’ll make sure to keep you updated along the recruitment process. Please note that we can’t keep track of CVs or similar documents sent via email. We value your privacy! When you apply, we'll handle your data with care. Want to know more about how we use your information? Check out our FAQs at the bottom of the jobs page - we've got all the details there for you!

Swedbank AB

Are you interested to work with one of Swedbank’s core platformsIn Swedbank you have the opportunity to: Join a World-Class Mainframe Environment Work with a highly interesting and technically challenging platform Unleash your technical curiosity and passion Contribute to improve complex, mission-critical systems Grow and develop alongside highly skilled colleagues What is needed in this role: Master’s degree in information systems (or equivalent) and at least 5 years hands on experience A structured and proactive approach, thriving in environments where reliability and precision are critical A strong interest working with automation, performance, capacity planning and problem solving Ensuring that the mainframe operating system and its core subsystems provide a secure, resilient, and cost efficient foundation for mission critical applications Ability to collaborate comfortably with both technical and non technical stakeholders Excellent communication skills in English, both written and verbal With us, you can experience: Personal and professional growth through self-leadership and continuous development. Meaningful work that positively impacts our workplace, our customers, and society. An open and collaborative culture that encourages cross-functional teamwork and provides networking opportunities. A supportive and inclusive environment that promotes a balanced and sustainable work-life, with flexible working conditions when suitable for the role. Benefits such as our share based reward program Eken, company pension plan, employee offer for banking products, health insurance. "Join our team and... become part of a team of professional colleagues, who work together to deliver challenging projects, stable and secure operations and by that contribute to Swedbank's position in society." - Cecilia Kåhrström your future leader We look forward to receiving your application by 07.08.2026.  Location: Sockholm, Sundbyberg Recruiting manager: Cecilia Kåhrström We may begin the selection during the application period, so we welcome your application as soon as possible. We have made our choice regarding recruitment media and therefore kindly decline contact with ad sellers or sellers of other recruitment services. Employment in this position may involve placement in a security class or, alternatively, a security screening without placement in a security class. Therefore, a security assessment with a background check may be conducted in accordance with the Security Protection Act (2018:585). Swedbank does not discriminate anybody based on gender, age, sexual orientation or sexual identity, ethnicity, religion or disability – everybody is welcome. #LI-Hybrid #LI-MA1

Swedbank AB

Are you interested to work with one of Swedbank’s core platforms? In Swedbank you have the opportunity to: Join a World-Class Mainframe Environment. Work with a highly interesting and technically challenging platform. Unleash your technical curiosity and passion. Contribute to improve complex, mission-critical systems. Grow and develop alongside highly skilled colleagues. If you enjoy solving intricate problems and working in an environment that values innovation and collaboration, this is the place for you. What is needed in this role: Master’s degree in information systems and/or equivalent work experience. Highly skilled in MQ on z/OS and and a great benefit if you have good knowledge in IMS (including DL/1) in and IBM Integration Bus as well. We believe that you are structured, proactive, enjoys troubleshooting, analysing problems, and finding solutions and thrive in environments where reliability and precision are critical. Deploy releases and handle configuration and change activities across environments. Perform lifecycle management, including upgrades and version testing. Act as a subject matter expert (SME) for system behavior and integrations. You are comfortable collaborating with both technical and non‑technical stakeholders. Participate in Agile planning, prioritization, and delivery activities Very good communication skills in English (both written and verbal). With us, you can experience: Personal and professional growth through self-leadership and continuous development. Meaningful work that positively impacts our workplace, our customers, and society. An open and collaborative culture that encourages cross-functional teamwork and provides networking opportunities. A supportive and inclusive environment that promotes a balanced and sustainable work-life, with flexible working conditions when suitable for the role. Benefits such as our share based reward program Eken, company pension plan, employee offer for banking products, health insurance. "Join our team and... become part of a team of professional colleagues, who work together to deliver challenging projects, stable and secure operations and by that contribute to Swedbank's position in society." Cecilia Kåhrström, your future leader We look forward to receiving your application by 07.08.2026.  Location: Stockholm Recruiting manager: Cecilia Kåhrström We may begin the selection during the application period, so we welcome your application as soon as possible. We have made our choice regarding recruitment media and therefore kindly decline contact with ad sellers or sellers of other recruitment services. Employment in this position may involve placement in a security class or, alternatively, a security screening without placement in a security class. Therefore, a security assessment with a background check may be conducted in accordance with the Security Protection Act (2018:585). Swedbank does not discriminate anybody based on gender, age, sexual orientation or sexual identity, ethnicity, religion or disability – everybody is welcome. #LI-Hybrid #LI-MA1