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
Kustom formerly known as Klarna Checkout (KCO) is the leading digital checkout solution provider in the Nordic market. Today we support over 24000 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 shoppersdriving growth globally.
As a Junior Infrastructure Engineer at Kustom youll play a key role in building and evolving the platform that powers one of the most trusted checkout solutions in the Nordics. Youll work across cloud infrastructure data networking and observability to ensure our systems remain secure scalable and resilient as we continue to grow.
Youll collaborate closely with engineers across product backend and data to design solutions that support high availability and low 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.
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
Bachelors 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
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
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 3000 SEK to invest in your health and fitness
Extra day off when major holidays (e.g. Christmas Eve New Years Eve) fall on weekends
Continuous learning opportunities and professional development support
At Kustom you wont 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 isnt a straight line. We support and encourage each other to try to fail to try again. Because thats how we grow individually and together.
Does this sound like the place for you
Please apply in English. At Kustom we welcome everyone! We dont care where youre 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! Thats why we have this awesome recruitment tool to keep track of all the amazing talents that apply - so please; apply through the system and well make sure to keep you updated along the recruitment process. Please note that we cant keep track of CVs or similar documents sent via email.
We value your privacy! When you apply well 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 - weve got all the details there for you!
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