Senior Backend Engineer (C# & AWS)

Senior Backend Engineer (C# & AWS) Get involved and have a true impact, influencing our company and the entire industry. Northmill Bank is a challenger bank at the intersection of technology and finance, committed to revolutionizing the way people manage and protect their financial well-being. We are creating a different kind of banking experience, digital yet personal . Northmill Bank was founded in 2006 and have grown to over 200 employees in 3 countries, 4 000 merchants and 600 000 end users. We use the latest technology to develop safe, smart, and user-friendly products for our customers. They are the sole reason why we do what we do. We are a 100% cloud-based product company where technology is the driver to create smarter banking products. Grab this opportunity to be a part of us and our journey! About the role As a Senior Backend Engineer, you will play a key role in designing and developing modern financial applications that power our banking ecosystem. You will build and enhance advanced monitoring systems that support our operations in AWS cloud environments, ensuring reliability, performance, and scalability. In this role, you'll collaborate closely with our business teams and the clients who rely on our products, giving you meaningful influence over how our applications evolve. Your daily work will involve technologies such as C#, .NET, ASP.NET, and AWS (including Fargate, Lambda, S3, and EventBridge), as well as tools like Jira, Confluence, Git, and Rider/Visual Studio. You will work with established architectural patterns such as DDD and CQRS, and you’ll also leverage modern AI-powered development tools to boost productivity and code quality. Required qualifications: 5+ years of commercial experience in creating web applications. Solid experience developing applications using C#. Solid experience in working with SQL databases. Willingness and interest to collaborate and work in a team. Stockholm as a place of living & SE citizenship or EES Resident status. Preferred qualifications: Experience with software engineering best practices (code reviews, continuous integration, continuous deployment, testing). Exposure to Agile development methodologies. Familiar with Web services/web API. Familiar with the AWS platform. Experience in working with NoSQL databases About you You’re a creative and curious person with a genuine passion for software development. Like us, you love learning, staying up to date with the latest tech trends, and writing clean, high-quality code. You’re comfortable sharing your thoughts, raising problems early, and contributing to thoughtful solutions. You thrive in a team environment and have experience working in an Agile setup. As we’re a multicultural team, strong proficiency in English is required. What we offer A fantastic office in a prime Stockholm location with great spaces and views An independent role with the opportunity to make a real impact Great opportunities for professional development Health - 5 000 kr health care allowance Conference abroad every other year Breakfast and fruits every day, as well as "holy fika” each Friday Regular after work and celebrated successes at the office Apply today and be a part of Northmill! Department Product Engineering Locations Stockholm Remote status Hybrid Stockholm Meet our people ✨ At Northmill, you will get a bunch of friendly, driven and nerdy colleagues. Representing 30 different nationalities, the set of different skills and experiences our employees possess is the key to success across all areas of business. About Northmill Bank Northmill Bank is a tech company with a banking license aiming to improve financial life, offer merchants smart solutions and erase the borders between in-store and online. Northmill creates a more personal and relevant experience for people and companies, helping more than 2,500 merchants and 250,000 end users. Trustpilot 4.5 of 5 Cloud 100 % End users 250 000 Founded in 2006 Co-workers 240 Turnover ≈750 MSEK