Senior Fullstack Developer (Full-time) H/F

About Prolong

At Prolong , we help fashion brands and retailers extend the life of their products through technology. Our platform connects the entire repair ecosystem from brands and repair partners to logistics and end-customers enabling circular models at scale.

We’re already working with leaders in the space like Fusalp, The North Face, Veja, Bocage , and more, across luxury, outdoor, and footwear.

We’re growing fast, backed by strong market traction and a mission that matters: building a more sustainable, circular future for fashion.

We are guided by strong values that shape both our product and our culture:

CARE We care for each other, our work, and every single user.

AMBITIOUS We challenge the status quo and build globally by default.

TRUST We own our results and lead through reliability and excellence.

FAST LEARNERS We move fast, learn faster, and never stop improving.

The Opportunity

We’re looking for a Senior Fullstack Developer to join our tech team and help us scale our platform and tackle some of our most exciting technical challenges.

You’ll be a core member of the engineering team , working closely with the CTO, Product, and Design and contributing directly to the success of our product roadmap and tech vision.

This is a key role as we move from startup to scale-up. You’ll have significant autonomy, ownership, and the opportunity to grow with us.

What You’ll Do

• Build and ship robust, scalable features across the full stack (React, NestJS, PostgreSQL)

• Collaborate closely with product, design, and business teams to solve real user problems

• Contribute to technical architecture , performance, and code quality standards

• Help us scale our codebase, systems, and dev practices as our platform and team grow

• Own and maintain end-to-end features from conception to production monitoring

• Bring engineering best practices to everything you touch from testing to CI/CD

• Contribute to shaping the culture and processes of a growing tech team

Our Stack

• Frontend : React, TypeScript

• Backend : NestJS, TypeScript, Prisma

• Database : PostgreSQL

• Infra : Google Cloud Platform, Terraform, GitHub Actions

We favor clarity, simplicity, and reliability and iterate fast with a strong product mindset.