May 18, 2026
Fullstack Developer
Senior • On-site
Copenhagen, Denmark
Introduction & Summary
We are seeking a highly skilled Fullstack Developer.
The ideal candidate will possess extensive experience in backend and frontend development, with proficiency in Python and JavaScript frameworks. If you have a passion for developing innovative solutions and a keen interest in AI technologies.
Main Responsibilities
As a Fullstack Developer, you will be responsible for designing and implementing web applications and services. Your focus will be on enhancing user experiences through effective software solutions.
Develop and maintain backend services using Python with FastAPI.
Implement frontend solutions utilizing React / NextJS.
Work with PostgreSQL (Relational) and Qdrant (Vector) databases.
Utilize Azure and Docker for deploying applications.
Collaborate with cross-functional teams to define, design, and ship new features.
Ensure code quality and maintainability throughout the development process.
Debug and optimize existing applications.
Key Requirements
Strong experience in backend development using Python (FastAPI, SQLAlchemy, Alembic).
Proficient in frontend technologies, specifically Javascript/Typescript with React / NextJS.
Experience with relational databases, particularly PostgreSQL.
Knowledge of vector databases like Qdrant.
Familiarity with cloud platforms such as Azure.
Experience with Docker for containerization.
Experience with LLM / AI technologies is a plus.
Bonus: Familiarity with LangGraph / LangChain for Python.
Nice to Have
Previous experience with AI-driven applications.
Understanding of software design patterns and best practices.
Experience in agile development methodologies.
Start: ASAP
End: End of September 2026
Location: Greater Copenhagen Area
Onsite/remote: min. 3 days onsite per week
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