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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Back-end C# .NET (OPPA) - **Company:** Keytrade Bank - **Location:** Brussel, Belgium (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** ASP.NET, .NET Framework, Application Programming Interfaces (APIs), Agile Methodology, Amazon Web Services, Unit Testing, C Sharp (Programming Language), Databases, Continuous Integration, Relational Databases, DevOps, Entity Framework, Identity and Access Management, Microsoft SQL Server, MySQL, NHibernate, Object-Oriented Software Development, Scrum Methodology, RabbitMQ, Mockito, Swagger, Systems Integration, Openapi, Backend, Git, Servicebus, Solid Principles, Front End Software Development, Domain Driven Development, Domain Driven Design, Grpc, Code Restructuring, Microservices - **Published:** May 30, 2026 - **Apply:** https://be.indeed.com/viewjob?jk=3907eb6acd0b4490 ## About the Role Do you have experience in gRPC?, * Academic degree in a technical field or a proven experience of at least 5 years in developing back-end application and integration services * Strong analysis skills * Proven skills in technical translation of the business requirements and user stories * Able to work independently * Capacity to work in Agile mode * Good knowledge of .NET with C# + ASP.Net experience + async/awaits + Object oriented principles + ORM (NHibernate or Entity Framework) + Solid Principles * Unit Testing + Mocking * Design of API (REST or gRPC) + OpenAPI/Swagger * Experience with Relational databases (MSSQL/MySQL) * Proficiency in English, and optionnaly in either Dutch or French * Knowledge of SCM (git or other) Assets * micro services architecture * event-driven * service bus (NServiceBus) * Integration with RabbitMQ * Domain Driven Development * CI/CD ## Description Keytrade Bank is a young bank, where IT systems traditionally were all developed in house. Currently we are moving to a model where we focus on customer experience and innovative products, relying more and more on off-the-shelf products and services for the basic functionality. Where in the past, responsibilities were organized by technical competences, we now are organizing them per business domain, called Feature Team. The creation of new products requires strong interaction between all IT fields: the back-end; the front-end, database, infrastructure, vendors and service providers. Working in a small bank is very different than working in a big bank. Responsibilities are greater, knowledge broader. We have a very high growth rate and we are looking for motivated people willing to become part of our dynamic teams to help improve and transform its existing trading and banking system. Currently we are refactoring our core systems and transforming them in micro services deployed on AWS following Domain Driven Design principles. Today we are looking for an Back-end C#. Net to join our team. Are you ready for a new challenge? Responsibilities * You are a team player, always ready to share and discuss ideas in order to improve the existing, and to find solution for new projects. Everyone is acknowledged for their role, and we need people with a strong sense of responsibility in our teams. * You are able to work independently when needed, dealing with tasks from early requirements analysis until final implementation and testing. You are open to interaction with your colleagues, able to reach out for help when required and open to accept or provide constructive criticism. You are eager to learn about trading and banking related matters, and also about new technologies. When it comes to programming, you are meticulous and orderly, without losing your pragmatic attitude. * You will be joining the OPPA Feature Team, responsible for Onboarding, Prospects, Personal Data Management and Access Management. * The team covers everything related to the onboarding process, welcoming future customers throughout their journey to become Keytrade clients. It is also responsible for the management and update of personal data, in line with regulatory requirements, as well as Access Management, where all access and signature methods are managed, including SoftKey and itsme. * In the coming years, one of the team's major initiatives will be to make the client onboarding experience smoother, more efficient and more user-friendly, both on mobile and web. This is a key project for the team, with a strong impact on the digital journey of future Keytrade clients. * You will work closely with frontend and backend developers, business analysts, DevOps engineers, testers, a product owner and a scrum master. As part of the feature team, you will plan, estimate, execute and deliver features on a two-week sprint basis, participating in all agile ceremonies. Keytrade offers a flexible remote policy, allowing you to work from home up to half of the time. ## Related Videos - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [Boosting OpenSearch Performance: gRPC Search in Action](https://www.wearedevelopers.com/videos/1935-boosting-opensearch-performance-grpc-search-in-action) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Branch your database like your code: How schema changes and pull requests go hand in hand](https://www.wearedevelopers.com/videos/350-branch-your-database-like-your-code-how-schema-changes-and-pull-requests-go-hand-in-hand) - [Designing gRPC APIs - The things they don't tell you](https://www.wearedevelopers.com/videos/689-designing-grpc-apis-the-things-they-don-t-tell-you) ## Related Articles - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Best Companies in the Netherlands: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/193-best-companies-in-the-netherlands-top-25-companies-in-2023) - [How to land a developer job in Amsterdam](https://www.wearedevelopers.com/magazine/36-how-to-land-a-developer-job-in-amsterdam) - [Software Developer Salary in The Netherlands [2023]](https://www.wearedevelopers.com/magazine/217-software-developer-salary-in-the-netherlands-2023) - [How to Find Tech Jobs in Amsterdam](https://www.wearedevelopers.com/magazine/279-how-to-find-tech-jobs-in-amsterdam) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs)