As we scale, we're looking for a Senior Full-Stack Engineer to join us at this pivotal moment. You won’t just write code — you’ll help shape the architecture, make key product decisions, and define our engineering culture. This is a rare opportunity to build with high ownership, alongside a small and passionate team who cares deeply about craft, clarity, and impact.

You’ll work closely with the founders on everything from fast prototypes to production-ready systems, and play a critical role in bringing Parallel’s vision to life. If you're excited by the idea of building an iconic product in a space that's ripe for reinvention, we’d love to talk.

We are looking for a Senior Full-Stack Engineer to help us achieve our mission of reducing administrative workload in hospitals.

This is a full-time role focused on building AI solutions designed to be rapidly deployed into production in hospitals.

Mission

As a Full-Stack Engineer, you will:

• Drive the development of our medical coding backend
• Help building the medical coding LLM agentic solution in close collaboration with our CTO
• Build the frontend of the solution (doctors & admin operators user-facing app)
• Build data pipelines between hospital systems and our tech stack, ensuring interoperability while adhering to HDS (health data security) standards
• Work closely with the CTO to refine our application’s architecture, balancing fast iterations and scalability
• Engage in the fast-paced, product-focused environment of an early-stage startup

Requirements

We’re looking for someone who’s passionate about the ongoing AI revolution, action-oriented, autonomous, and ambitious. You are the ideal candidate if you have:

• 5+ years of experience in Fullstack Dev Role
• Proficiency in Node.js & Typescript
• Experience in devOps and infrastructure (no need to be proficient)
• Ability to work with high-level goals, break down complex problems, and deliver results independently
• Top engineering schools

Technical stack

• Backend: Typescript with NestJS, Express, Prisma, Postgres
• Frontend: React, TanStack, Tailwind
• Data: Python & Node (for low level proxy servers)
• Tools: Monorepo, Github, Github actions
• Infra: AWS, Azure, Cloudflare, Docker, Terraform, Kubernetes
• CI/CD: Github, Github Actions, Monorepo setup
• Observability: Datadog
• AI/ML: Hugging Face, LangChain

Engineering Mindset

• Data security is our foundation, given our work with sensitive health data
• We focus on solving user problems, not shipping features — deep product involvement is essential
• Full type safety from database to UI
• Rapid development with tools like Cursor
• Automated best practices with eslint, Prettier, Jest, and TypeScript
• We leverage the latest technologies and libraries but sometimes, old boring tech that does the job is what’s needed
• Infrastructure should empower — not block — product iteration

Interview process

• Quick chat with our CTO Chris
• Case study in our office in Paris
• Meeting with our CEO Paul
• Drink to meet the team

Life at Parallel

At Parallel, you’ll work at the intersection of healthcare, AI and real-world impact. We move fast, and iterate constantly.

We’re looking for people who care deeply about solving hard problems that matter.

Benefits

💰 Competitive package: We hire top talent and offer top market compensation and equity packages.

🤝 Team-first culture: The whole team gathers monthly for events, 2 times per year for off-sites.

🏙️ Sweet office : Nice and bright office in the center of Paris 2e.

📦 Everything you could expect:

• Premium health insurance via Alan
• Swile meal vouchers
• The latest Apple equipment
• 50% reimbursement on public transport
• Access to the tools (Cursor, ChatGPT…) or ressources (books, courses) you need

Team pictures

👉

Interested or know someone who’d be a great fit? Drop a mail at **[email protected]**

A meeting lands on your calendar

If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.