We are looking for a Full-Stack Developer to build the platform clients use every day. The product is data-heavy, so you will turn complex sustainability data into clear, fast and reliable features, from the database to the screen. You will work closely with the CTO and engineering team, own features from idea to production, and help shape how we build as we grow. This is a full-time, in-house position with flexible remote work in the Flemish region.

What you’ll do

• Build and maintain our ESG platform across the stack, with TypeScript and Next.js at its core.
• Turn large, complex sustainability datasets into clear dashboards, reports and workflows.
• Own features end to end: clarify the need, design the solution, ship it and follow up.
• Write clean, tested code and take part in code reviews, both giving and receiving feedback.
• Work with the CTO and back-end developers on APIs, data flows and performance.
• Bring ideas to improve the product, our tooling and how we work.

What we’re looking for

• At least three years of professional experience in software development or a combination of both QA and software development.
• Strong skills in TypeScript and Next.js (React).
• Some familiarity with data analytics or big data, and comfort working with data-heavy interfaces.
• You understand every line you ship. AI tools are welcome, vibe coding is not.
• Fluent English.
• Based in the Flemish region of Belgium.

Nice to have

• A master’s degree.
• Experience with data visualization libraries and dashboards.
• Experience with testing and QA practices (unit, integration or end-to-end tests).
• Interest in sustainability, ESG or climate tech.

How we work

• Ownership. You take initiative and drive your work forward without waiting for instructions.
• Startup mentality. Things move fast, priorities shift, and you enjoy building something from the ground up.
• Open communication. You speak up, ask questions and share problems early.
• Quality. Every change goes through code review, and we care about code we can maintain.

What we offer

• A full-time, in-house employment contract.
• A gross monthly salary of up to €4,800, depending on experience.
• Flexible remote work, with our office in Antwerp available and no strict office policy.
• Real ownership and a direct line to the founders in a small team.
• Meaningful work that helps companies meet their sustainability goals.