Medior Full Stack Developer

Opusflow
Opusflow

Software Engineering · Full-time

Netherlands

EUR 30k-54k / year

Posted on Nov 6, 2026

Vacancies

Medior Full Stack Developer

Are you a curious and ambitious Medior Software Developer ready to build impactful frontend and backend solutions? A role where you not only develop features in a modern tech stack, but also think along about scalable architecture and continuously improve our platform? Do you want to do this in a fast-growing company that supports the energy transition? Then you might be exactly who we’re looking for.

Development

Medior Full Stack Developer

  • Netherlands
  • Full Time
  • €30.000 – €54.000

About the role

As a medior software developer, you will develop both frontend and backend solutions in a cutting-edge technology stack. You can work on different projects and modules within our software. Here you will be responsible for developing and documenting new features. These features are often initiated by our customers and further defined to a general feature used by a large user base. You keep yourself up-to-date with relevant technologies and think critically about creating lasting software solutions.
  • Develop and document new features
  • Keep yourself up-to-date with relevant technologies
  • Think critically about creating lasting software solutions

Key Responsabilities

What we offer

  • €2.500-€4.500/month salary based on 40 hours a week (depending on relevant skills and work experience)
  • A friendly workplace in a young and dynamic team
  • Space for personal growth and development
  • 25 holidays per year (on a full-time basis)
  • A one-year contract (32-40 hours/week) with a view to permanent employment
  • Free lunch to make your working day even better
  • Friday afternoon drinks/snacks to end the week pleasantly
  • You are ambitious and enjoy learning new things
  • Medior level experience in React (MUI), NextJS, GraphQL (Hasura) and PostgreSQL.
  • You work precisely, quick and with an eye for detail
  • Flexibility in a highly dynamic environment
  • Being very knowledgeable in devops is a plus
  • Proficiency in setting up API connections/integrations
  • You enjoy brainstorming and sharing your ideas

What you bring

What you'll work with

  • EG: Front-end: React, TypeScript, Next.js
  • Testing: Jest, React Testing Library, Cypress
  • Back-end & Infra: Node.js, NestJS, PostgreSQL, AWS, Docker
  • Kubernetes Tools: GitHub, Linear, Slack
  • You think in scalable solutions, not quick hacks.
  • You live and breathe ‘clean code’ and inspire others to do the same.
  • You have a passion for performance and a seamless user experience.
  • You want to sink your teeth into a complex product that has a positive impact on the world.

What makes you unique

How to apply

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