Senior C#./NET Developer for Interest Rate Service (IRS) solution | SEB, Solna

SEB; Solna kommun; On-site; SEK 900,000 - 1,100,000; Full time

Job summary

SEB is seeking a senior C# developer to join the IRS team and drive ownership from design to production support. You'll help advance SEB's account administration and interest rate services on a modern .NET/Angular stack, with a roadmap that positions this platform as a strategic enabler.

Working in an agile team, you'll contribute hands-on with C#/.NET, PostgreSQL, OpenShift and GitHub Actions, collaborating with product owners and stakeholders to deliver robust, high‑quality software and

Qualifications

• Senior developer with strong C#/.NET and SQL skills.
• Experience with OpenShift and CI/CD pipelines, automated testing, deployment automation and DevOps practices.
• Ability to take ownership and solve complex problems independently.
• Experience operating and improving production systems.

Responsibilities

• Build and evolve business‑critical APIs and services using .NET.
• Design robust solutions and drive technical improvements.
• Work hands‑on with PostgreSQL, EF Core, OpenShift, GitHub Actions, and Angular.
• Take ownership of production stability, incident resolution, and operational excellence.
• Collaborate closely with product owners, architects, and stakeholders to deliver customer value.

Skills

C#/.NET

SQL

OpenShift

CI/CD

Automated testing

DevOps practices

Tools

Entity Framework Core

PostgreSQL

Angular

GitHub Actions

OpenShift

Job description

Are you passionate about new technology and making a difference? Join our digital transformation!

SEB is more than just a bank with an IT function. We are a tech company powered by innovation and fueled by collaboration. From COBOL to AI and everything in between, we offer you an impressive tech stack and several technology paths. Together we’re innovating and building the tech arena of the future. Are you ready to take on a new challenge? If so, you’ll be interested in this opportunity!

About the role

Join the IRS team and help drive one of SEB’s strategic account and interest rate services. We are looking for a senior developer who enjoys taking ownership from design and development all the way to production support and operational excellence.

This role is ideal for a senior engineer who wants significant responsibility, technical influence, and direct impact on a business‑critical platform.

As a senior C# developer, you will play a key role in driving the development and implementation of SEB’s account administration and interest rate services team. You will onboard to a recently developed Interest Rate Service solution with an exciting roadmap that serves as a strategic enabler within the Accounts offering, built in‑house on a standardized technology stack using .NET and Angular. Working as part of an agile team of skilled developers, you will contribute hands‑on to designing, developing, and delivering high‑quality software, while collaborating closely with product owners and stakeholders to define and ship new features. You will work with technologies such as C#/.NET, PostgreSQL, OpenShift, GitHub Actions, and Angular, participate in technical, architectural, and methodological investigations, and help ensure performance, quality, responsiveness, code quality, organization, and automation across the solution.

What You’ll Do

• Build and evolve business‑critical APIs and services using .NET
• Design robust solutions and drive technical improvements
• Work hands‑on with PostgreSQL, Entity Framework Core, OpenShift, GitHub Actions, and Angular
• Take ownership of production stability, incident resolution, and operational excellence
• Collaborate closely with product owners, architects, and stakeholders to deliver customer value

We believe you’ll thrive if you

• Are a senior developer with strong C#/.NET and SQL skills
• Has strong experience with OpenShift and CI/CD pipelines, automated testing, deployment automation, and DevOps practices
• Enjoy taking ownership and solving complex problems independently
• Have experience operating and improving production systems
• Care about code quality, automation, maintainability, and reliability
• Like working in a small team where your contributions make a real difference

Do you want to be part of SEB?

It is our fundamental belief that inclusion and diversity is crucial for our future success. We strive to have an inclusive, value‑driven culture where employees feel valued, respected, and involved irrespective of who they are, what they believe or where they come from.

no later than 10th of October

Please be aware that our final candidates undergo background checks, a process that includes for example identity control, verification of qualifications, credit checks, company engagements and history of crime. In some cases, we also apply random drug checks. During employment, employees within SEB can also expect to undergo recurring background checks.

SEB Sweden has a redeployment responsibility, which means that this position might be covered by internal redeployment.

Learn more about working at SEBon our Career website or through our Career podcasts.

sebgroup.com/career

bit.ly/SEBcareer