Senior Back-end engineer

About Nabla

We are a team of entrepreneurs, clinicians and engineers committed to bringing back joy to the practice of medicine. Together with a community of clinician innovators, we’ve harnessed machine learning to develop an AI assistant that restores the human connection in healthcare. Over 100,000 clinicians across 130+ organizations trust Nabla daily.

Engineering at Nabla

Our engineering team is lean, fast‑moving, and deeply technical, spanning machine learning, native desktop apps, and platform infrastructure to deliver AI into clinical settings reliably and at scale.

Your Team

Product development is led jointly by Engineering and Product, organized into cross‑functional squads focused on specific product areas. Squads bring together product managers, designers, engineers of various profiles, and domain experts, operating with high ownership.

What You’ll Do

As a Senior Back‑End Engineer, you will play a critical role in scaling Nabla’s AI‑driven healthcare platform. You will take ownership of key components of our back‑end systems, collaborate closely with product and machine learning teams, and help shape the technical direction of our infrastructure.

• Design, build, and evolve our server‑side applications and APIs
• Lead complex integrations with external partners, especially Electronic Health Record (EHR) systems
• Continuously improve and optimize our back‑end architecture and developer experience
• Guide architectural discussions and influence long‑term technical decisions
• Collaborate closely with Machine Learning, Product, and Front‑End teams to deliver impactful end‑to‑end features
• Mentor junior engineers and contribute to scaling the engineering culture

Impact

• Nabla processes 10 billion tokens/month with LLMs
• Every week, hundreds of thousands of clinical notes are automatically generated and synced with EHRs, saving thousands of hours for clinicians
• Our APIs serve real‑time workloads in high‑stakes clinical environments

Your DNA

• Strong foundations in computer science or a related discipline
• Senior‑level experience in back‑end engineering within fast‑paced, production‑critical environments
• Proficiency in one or more widely used back‑end languages (Java, Kotlin, C++, Python, etc.)
• Deep experience designing, building, and maintaining scalable APIs and distributed systems (GraphQL and OpenAPI experience is a plus)
• Comfort driving architectural decisions and technical strategy
• Write clean, maintainable code and uphold high standards for software quality
• Clear communication in English
• Bonus: experience with cloud infrastructure, security/compliance, or healthcare data standards (FHIR)

Our Stack

• Frontend: TypeScript, React, Tailwind CSS, Swift, Rust, Electron
• Backend: Kotlin / JVM, GraphQL, PostgreSQL
• ML & Infra: Python, PyTorch, Slurm, GCP, Terraform, Kubernetes

Where you’ll be based

Paris 3e (Arts & Métiers). Remote policy: 2 days remote a week.

Benefits

• Stock ownership
• 100 % healthcare coverage
• Meal vouchers
• 50 % coverage of public transportation costs
• Exercise classes during the workday (Yoga, running, pilates, HIIT)
• Unlimited budget for book purchases related to ML/Healthcare
• Culture of trust & accountability—output matters more than clock‑in time

Equal Opportunity Employer

We recognize the ongoing challenge of diversity in tech. We foster an inclusive environment where everyone can be authentic and excel. As an equal opportunity employer, we actively welcome applicants from diverse backgrounds.