Senior Full-Stack Developer – Modern Engineering & Agentic Coding

Senior Full-Stack Developer – Modern Engineering & Agentic Coding

Full-time position based within commuting distance of our office in Copenhagen.

What you’ll do

Build, test, and deliver software using modern engineering practices such as everything-as-code, CI/CD, GitOps, automation, and open‑source principles.

Work across frontend and backend technologies, contributing to architectural decisions, system design, containerised environments, and clear, maintainable documentation.

Improve developer and user experience by shifting quality left, applying strong design principles, mentoring others, and delivering minimum viable products with a clear path to scale.

Design, build, and operate platforms and infrastructure, including APIs, CLIs, platform engineering, immutable infrastructure, and internal developer platforms.

Collaborate, teach, and lead through effective communication, technical writing, code reviews, lean principles, and strong data and security practices.

Lead technical workstreams and collaborate closely with clients, translating business needs into pragmatic technical solutions.

Qualifications

Relevant M.Sc. in computer science, software engineering, or a related field (mandatory).

Minimum 5 years of professional experience in full-stack software development or similar engineering roles.

Strong communication skills in both written and spoken English.

Alignment with values around software quality and delivery.

Tool-agnostic, choosing the right tool for the job.

Comfortable with complexity and able to break problems into manageable pieces.

Solid experience building and operating modern software systems in production.

Understanding of software architecture, system design, testing, security, and maintainability.

Ability to guide technical decisions, challenge assumptions, and communicate trade-offs clearly.

Experience mentoring or supporting other developers through code reviews, pairing, or technical sparring.

Do not need to meet all criteria; a strong engineering foundation, senior mindset, and genuine appetite for learning and growth are the most important factors.

What we offer

Real autonomy: own features end-to-end and lean into the technology you care most about.

Growth opportunities: learning programme, mentoring, and ample peer knowledge sharing.

Community and craft: strategy trips, meetups, and events across The Tech Collective and Implement Consulting Group.

A competitive compensation package with strong development opportunities.

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