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Senior Backend Engineer - C#

  • Hybrid
    • Utrecht, Utrecht, Netherlands
  • R&D

Job description

Change is constant. Impact is not. 🐬

At BlueDolphin, we believe organizations deserve more than plans that collect dust — they deserve real progress. We are the first AI-powered business transformation platform, bringing strategy, architecture, and execution into one connected workspace, so teams can see clearly, decide together, and act with confidence.

Trusted by 44,000+ users across the globe, we help organizations turn complexity into clarity. Whether you're managing an application portfolio, designing solutions, or navigating a major transformation, BlueDolphin gives you the control to change on your terms.

To support our continued growth, we're looking for a Senior Backend Engineer based in Utrecht.

The opportunity in short

You'll be a core contributor to the microservices backend of a fast-growing international SaaS — built on C# and .NET on Azure Service Fabric and MongoDB. You'll own meaningful parts of our system, drive architectural decisions, and ship code that matters. And you'll do it with AI as a standard part of how you work — not as a gimmick, but as a genuine force multiplier.

Responsibilities

  • Design, build, and maintain scalable backend services — researching new technologies and continuously raising the quality bar

  • Use AI tooling (GitHub Copilot and beyond) as a default, not an afterthought — you know when to lean on it, when to push it further, and how to get the most out of it in a real engineering context

  • Actively identify where AI can compress feedback loops, accelerate development, improve test coverage, or reduce toil — and then do it

  • Support customers facing complex technical issues in their environments

  • Drive our approach to test-driven development, WebSockets, and efficient data processing pipelines

  • Collaborate closely with UX designers, QA engineers, and fellow developers in a Scrum team

  • Participate in regular peer sessions to maintain and elevate our coding standards

Job requirements

A strong candidate will check most of these boxes:

  • ~7 years of backend development experience, primarily in C#

  • Deep understanding of microservices architecture and how to build modular systems that scale

  • Treats AI-assisted development as the baseline — GitHub Copilot or equivalent is already part of your workflow, and you're always looking for the next layer

  • Pragmatic about AI: you know its limits, but your default orientation is toward what's possible, not what isn't

  • Self-starter who takes ownership without needing to be convinced

Bonus points for:

  • Experience with Enterprise/B2B SaaS platforms

  • Hands-on with .NET on Azure Service Fabric or MongoDB

  • Experience with WebSockets and document databases

Why BlueDolphin?

  • 4.7/5 on Glassdoor

  • Quarterly performance-based bonus

  • Weekly team days at the office

  • Working-From-Abroad program

  • Full transparency in job levels and salaries for the internal team

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