Senior Back-End Developer (C# Kotlin)
Senior Back-End Developer (C# Kotlin)
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1 Vacancy
Job Description
Client: Leading international IT service provider
Location: Amstelveen
Start date:
End date:
Hours: 36 per week
Contract: Secondment to Permanent (DetaVast)
Department: North Unit 01
Category: Software Development & Maintenance
Hard requirements / Tech stack
C# & Kotlin strong hands-on experience
API development & integrations
CI/CD pipelines (Azure DevOps GitLab or similar)
Agile / DevOps environment
5 years of back-end development experience
Excellent English communication skills (spoken and written)
About the role
We are looking for a Senior Back-End Developer (C# / Kotlin) to join our client a leading international IT service provider. You will become part of a professional development team responsible for designing building and maintaining enterprise-grade software solutions.
This role is offered as DetaVast: starting on a secondment basis with the possibility to transfer into a permanent position upon mutual agreement.
Responsibilities
Design develop and maintain back-end services in C# and Kotlin.
Build secure scalable APIs and services.
Collaborate closely with front-end developers and business stakeholders.
Ensure code quality with automated testing and best practices.
Troubleshoot and resolve issues in production and development environments.
Contribute to architectural decisions and continuous improvement.
Your profile
Proven expertise in C# and Kotlin.
At least 5 years of back-end development experience in enterprise environments.
Strong knowledge of API development and integrations.
Experience with Agile/DevOps and CI/CD pipelines.
Proactive communicative and solution-oriented.
Fluency in English (spoken and written) is mandatory.
Dutch language skills are a plus but not required.
Why join
You will be working in a professional and collaborative environment within an international IT organization where innovation scalability and quality are key. This role offers a long-term assignment with the perspective of a permanent position.
For questions or to apply please contact Valentijn Nijk at .
Required Experience:
Senior IC
Employment Type
Full-Time
