Senior Software Engineer

Senior Software Engineer

Backend / Fullstack (JS/TypeScript) Bitropy builds sovereign AI infrastructure for European companies, helping them deploy and scale AI while staying GDPR & EU AI Act compliant. We’re looking for a Backend Developer to build the core of an AI platform used by enterprise CTOs and engineers. Early-stage startup, real ownership, fast decisions, no corporate layers.

About the Role

We are looking for a Senior Engineer who isn’t afraid to get their hands dirty. As an early member of the team, you won’t just be "closing tickets" you will be architecting the systems that power our platform. 

We're seeking an experienced engineer who thrives in modern JavaScript/TypeScript environments and has an AI-first mindset. You'll be building scalable backend systems and full-stack applications while embracing cutting-edge development practices, including agentic coding workflows.

You are a builder at heart. You understand that "scalable" isn't a buzzword; it's a result of deliberate architectural choices. You are comfortable moving between designing complex database schemas in Postgres, optimizing TypeScript performance in Bun, and building full-stack features in Next.js.

Required Skills & Experience

• JavaScript/TypeScript Strong proficiency in modern JS/TS development

• Backend API Development Experience designing and building RESTful or GraphQL APIs

• Next.js / NestJS Hands-on experience with one or both frameworks

• ORMs (Drizzle) Experience with modern TypeScript ORMs, preferably Drizzle

• PostgreSQL – Strong database skills with Postgres

• Docker – Containerization experience for development and deployment

• AI-First Mindset – Enthusiasm for leveraging AI tools and agentic coding practices in daily work

Nice to Have

• Kubernetes – Experience with container orchestration and K8s deployments

• BullMQ – Background job processing and queue management

• Puppeteer / Web Scraping – Experience building automated scrapers and browser automation

• Knowledge of the Model Context Protocol and how AI agents interface with systems.

What You'll Do

• Solve hard problems wherever they exist., whether that's optimizing an API query debugging a race condition, or setting up a new service.

• Design and implement scalable backend services and APIs

• Build full-stack features using Next.js and modern TypeScript patterns

• Collaborate with the team to architect database schemas and data pipelines

• Leverage AI-powered development tools and agentic coding workflows

• Contribute to infrastructure and deployment automation

• Interested?Send a short message with your LinkedIn or GitHub. No formal cover letter needed,  just tell us what backend systems you’ve built and what kind of problems you like solving.