Fullstack Software Engineer (x/f/m) - Agentic Platform

Alan SA.; France; Hybrid; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Flexible Office

Healthcare insurance

Learning & Training opportunities

Parental leave

Job summary

Alan is building the new standard in prevention insurance. Our Engineering team creates infrastructure, interfaces and applications to deliver first‑class service to members and health professionals, with a strong stake in product interaction and ownership.

Join a fast‑moving group where engineers shape architecture, own reliability and security in production, and mentor colleagues while delivering impactful, scalable software across France and beyond.

Qualifications

• 3+ years in software engineering.
• Experience with LLM APIs, agent frameworks, evals or MCP is a strong plus.
• Built products, platforms or infrastructure used by others.
• Mindset: adoption-driven, tradeoff aware, and user‑centric.

Responsibilities

• Own some problems end to end, from design to production, with influence on architecture and code quality.
• Work closely with Alaners, product teams, and ops to use what you build.
• Own reliability, cost and security in production.
• Mentor engineers and contribute to our engineering culture.

Skills

Backend development

Distributed systems

APIs

Security

Mentorship

Tools

LLM APIs

Eval frameworks

MCP

Job description

Health can’t wait.

Not for symptoms to get worse. Not for a six‑month appointment. Not for a system to catch up. But that’s exactly how healthcare works today. You wait, until you can’t.

Alan exists to end the wait.

Health is a universal right, and we believe this right can only become real when it’s coupled with prevention. We need to stop treating health as something we repair and start treating it as something we build, every day. It’s not solely a question of willpower. It’s the healthcare system itself that needs to work for everyone, in a sustainable way.

So we are building the new standard in prevention insurance. Alan is the first company that integrates insurance, prevention, and care into a single, acclaimed user experience.

We are on an incredible journey to build a global leading company, with a unique culture. We already partner with 40K+ companies of all sizes, serving more than 1M+ members, and have reached €800M+ in ARR.

Prevention as the new norm. That's what we're building with our team of 1000+ people. If it speaks to you: we're hiring across France, Spain, Belgium, and Canada. And beyond.

The Engineering team

In our engineering team, we build the infrastructure, interfaces, and applications to provide first-class service to our members, health professionals, and even ourselves!

Being an engineer at Alan means joining a team of talented, committed and passionate engineers, with a lot of product interaction.

We move fast, with a lot of ownership, and are proud to tackle big problems!

Our process is very simple: those who make product decisions are the same ones who build them.

Want to know more? Read this article if you want to discover how life as an Engineer at Alan and this article on our Engineering career pat

The stack

Python services on FastAPI, async SQLAlchemy and PydanticAI, Temporal for durable execution, PostgreSQL, MCP, Daytona sandboxes, various LLM model providers, Terraform on AWS, React with Vite. Our main backend is a Flask monolith. We deploy daily and believe in distributed ownership: you build it, you own it.

The Agentic Platform area

In 2027, we expect to run more AI agents than we have employees.

Agents already do real work at Alan. They answer members' health questions, resolve support requests, read medical documents, detect fraud, automate operational tasks, and write a large share of our code.

But every team building an agent ends up solving the same hard problems again: how to call models safely with health data, how to give an agent tools and the right permissions, how to know whether a prompt change made it better or worse, how to debug what it did. The result: several agent frameworks and evaluation stacks, each with its own security and compliance story.

The Agentic Platform area was created to fix that. Our mission: make it cheap, fast and safe for every Alaner or crew to build, run and improve agentic products and workflows.

We own the environment agents run in (infrastructure, runtime, evaluation, observability, skills lifecycle), with security, privacy and compliance by design, and the generalist products on top: Hopper and the Agent Studio. Product teams and all Alaners own their agents, skills, and their outcomes. We give them the paved road.

Two crews, one team:

• Hopper is every Alaner's AI companion. Five months after it started, 80% of Alaners use it, 3k sessions are created each day, and about 30% of our pull requests are opened from it (watch how we built it).

• AI Product Platform builds the shared blocks every AI product at Alan runs on. For instance, our ops teams now build agents autonomously on our Ops AI Platform (read how, watch the talk).

Problems you'll only find here

Run agents at scale

• One runtime for every AI product. A shared agent framework, from a single model call to multi-agent workflows with live streaming, and one gateway to every model: routing, failover across providers, quotas and cost per use case built in.

• Agent sessions that last for hours. Durable sessions, started from the web, Slack, Linear or GitHub, that survive pod restarts and deploys, and pick up exactly where they left off.

• Sandboxes at scale. An isolated environment for every agent session and every evaluation, on an infrastructure compliant with sensitive data, with negligible boot overhead.

Make agents trustworthy and proactive

• One tool gateway to the whole company. An MCP gateway that connects agents to internal tools and data, external services, computer use, managing identity and credentials.

• Agents safely acting on critical data. We give each agent no more than the access it needs. Every tool call goes through identity, permissions, confirmations and audit. No sensitive data leaks.

• Evals you can replay in time. Re-run an agent or skill against production as it was at a past point in time, on real data, safely isolated. Anyone can ship knowing their change is an improvement rather than a regression.

• Agents and skills that proactively fix themselves. Every run is traced, and every human correction, failed tool call or escalation becomes a prioritized fix that Hopper can apply.

Put agents in everyone's hands

• Skills as a product. A registry where Alaners and teams publish, share and version their skills, so that nothing needs to be repeated twice.

• AI that non-engineers can own. Alaners who ship code through Hopper, Operators or Sales who build their own agents or skills in our Studio and operate them from their day-to-day tools.

• Automations and artifacts. Agents that run on a schedule or on an event, and build the dashboards and hosted sites that become the go-to places for collaboration.

Is it you we’re looking for?

What you'll do

• Own some of the problems above end to end, from design to production, with significant influence on architecture and code quality

• Work closely with the people who use what you build: Alaners, product teams, ops

• Own reliability, cost and security in production

• Mentor engineers, contribute to our product and engineering culture, and help build the team

Experience we value

• 3+ years in software engineering, with solid backend fundamentals

• Platform-leaning or product-leaning: both are welcome. Depth in at least one of: distributed systems and runtimes, evaluation and data quality, security and authorization, product UX

• A good sense of user and developer experience, whatever you build

• You built products, platforms or infrastructure used by other people

• Experience with LLM APIs, agent frameworks, evals or MCP is a strong plus; ML or MLOps experience is a plus

Mindset we value

• You measure success by adoption, not by what is available

• You make concrete tradeoffs between speed, reliability, cost, security and user experience

• You simplify complexity with clear abstractions and maintainable code

• You care about whether people can understand and verify what an AI system did

• You keep up with the latest AI technology and know the open-source AI ecosystem

• Self‑directed, pragmatic, humble, collaborative, enthusiastic about learning and teaching

• Excited about AI changing who can build, investigate and automate work

Above all, we look for high potential and curiosity: make sure to show us this when you apply. Everything else is a bonus.

You should be fluent in English (no French required).

How we work

• Location: you must be legally eligible to work in France, Belgium, or Spain.

• Remote work: we offer remote work flexibility, but we value in-person collaboration.

Perks & Benefits

At Alan, we believe that being in good health is a basic need, and it starts with our employees. This is why Alaners are provided with a stimulating environment and perks ensuring they are happy, efficient and spend only high-quality time with co-workers.

Therefore, we offer:

• Fair rewards. Generous equity packages complement your base salary.

• Flexible Office. Amazing office space at our HQ, sponsored co-working hubs or a full-remote experience with home office equipment sponsorship, we want you to live where you’re the happiest.

• All the tools you need. Top of the range equipment: Macbook Pro, keyboard, laptop stand, monitor, and noise-canceling headphones.

• Flexible vacation policy and flexible working hours. Organize your time as you wish.

• Delightful healthcare insurance: Extremely comprehensive health insurance - 100% for you and your children, 90-100% for partners depending on your country (permanent contracts only).

• Transport. Country-specific commuter benefits.

• Learning & Training opportunities. A highly flexible Training policy free books and budget to attend and speak at conferences if the opportunity arises.

• Personal growth through coaching: At Alan, coaching isn't just a perk -it's core to who we are. Every Alaner is paired with a dedicated coach from day one, who helps maximize their impact, nurture engagement, and navigate Alan's values to develop their full potential. Learn more about our coaching culture.

• Parental leave. Extended parental leave for all new parents.

Important note: we hire people, not roles.

If you're excited about this opportunity but don't check every box, we'd love to hear from you. Everyone, no matter how underrepresented, should feel free to apply as it can only bring learnings or success.

If you identify yourself as a woman: Did you know that research shows women often apply only when meeting 100% of requirements?

Remember, this is just a guide, not a checklist.

A quick note about the process Note: While you're applying for a specific area, you may join a different engineering team based on where we think you'll have the most impact. Check out descriptions of other areas.