Software Engineer, Frontend at Mistral (Paris, France)
Mistral· Paris, France·
Role details
Mistral at a glance
A French AI lab building open and frontier-grade large language models, with the full developer and enterprise stack around them.
Mistral is a French AI lab that builds open and frontier-grade large language models and sells the full stack around them: developer tooling, an agent studio, consumer and enterprise apps like Le Chat and Vibe, custom model training, and its own GPU compute. Its edge is deployment control, with open weights, EU hosting, and self-hosting for regulated and sovereign buyers.
$3B+ raised · latest: Series C · 1.7B euros · Sept 2025 · backed by ASML, Nvidia, Andreessen Horowitz, DST Global
Job description
About Mistral
Mistral provides full-stack AI solutions: from frontier models to developer tools, applications, and compute. We partner with enterprises tackling the hardest problems—across high-stakes industries like finance, manufacturing, defense, healthcare, and the public sector—co-creating customized AI systems that they can run on their terms. We are a dynamic, collaborative team passionate about AI and its potential to transform society. Our diverse workforce thrives in competitive environments and is committed to driving innovation. Our teams are distributed between Europe, North America, Asia and the Middle East. We are creative, low-ego and team-spirited.
Role summary
We are seeking passionate and skilled Frontend Engineers to join our growing team. In this role, you will have the unique opportunity to work on our complete range of products, contributing to its development and enhancement. Your work will directly impact the user experience, making it more engaging, efficient, and intuitive.
What you will do
- Full Stack Development: Design, develop, and maintain scalable and robust features, ensuring seamless integration between front-end and back-end systems using a modern stack.
- User-Centric Design: Prioritize user experience and ensure that our products meet the needs and expectations of our user base.
- Code Quality: Write clean, maintainable, and well-documented code, and participate in code reviews to uphold our high standards of quality.
- Collaboration: Work closely with cross-functional teams, including product managers, designers, and other engineers, to deliver high-quality software solutions.
- Problem-Solving: Tackle complex technical challenges and develop elegant, efficient solutions that improve performance and reliability.
- Innovation: Stay up-to-date with the latest technologies and trends in AI and software development, and apply them to enhance our products.
About you
- Proficient in TypeScript and NodeJS with a preference for experience in B2C contexts.
- Experience in a Front-end framework like React, NextJS, Remix, VueJS
- Knowledge of web libraries like Tanstack React Query, tRPC, Framer Motion, …
- Comfortable shipping products end-to-end
- Strong problem-solving abilities and attention to detail
- Excellent communication
- Low Ego and team spirit mindset
- Autonomous and self-starter
Now it would be ideal if you have experience with
- AI Products, particularly with LLMs
- Python
- Distributed Systems
- Monitoring/Alerting
- UX development (Figma)
Hiring Process
- Introduction call - 45 min
- Technical Rounds
- Live-coding Interview (TypeScript) - 45 min
- System Design Interview - 45 min
- Tech Culture interview - 30 min
- Culture-fit discussion - 30 min
- References
Location & Office Policy
This role is based in one of our European offices (Paris, France and London, UK). We will only consider candidates who either reside or are open to relocating there. We strongly believe in the value of in-person collaboration and we encourage going to the office as much as we can (at least 3 days per week) to create bonds and smooth communication. Our remote policy aims to provide flexibility, improve work-life balance and increase productivity.
What We Offer
We offer a comprehensive benefits package designed to support your well-being, growth, and work-life balance. Benefits vary by country and may include healthcare coverage, parental leave, retirement plans, relocation support, wellness programs, meal and transportation allowances, and other location-specific perks. For the most up-to-date details on benefits available in your location, please refer to our Benefits page.
Privacy Policy Your privacy matters to us. You can learn more about how we handle your personal data in our Applicant Privacy Policy.
Why work at Mistral
- Culture: Flat structure, high ownership, low ego, and a "builders, not order takers" mentality. The company values audacity, speed, rigor, and customer centricity.
- Remote/Hybrid/Office: Based in Paris (15 rue des Halles); relocation support and visa sponsorship offered. Specific remote/hybrid policy not detailed, but global team suggests flexibility.
- Notable perks and benefits (from careers page):
- 20 weeks paid parental leave for all birthing parents.
- 100% employer-sponsored medical, dental, and vision coverage for employees and dependents.
- 6% 401k match (US) / 5% pension contribution (UK).
- Childcare support (reserved daycare seats or financial assistance).
- Meal allowances and transportation support.
- Fitness and wellness subsidies.
- Relocation and settling-in services.
- Financial and career planning support.
- Team composition: 900+ employees from 30+ nationalities; 50% female leaders.
- Interview process: For science, product, and engineering roles: intro conversation → 2-5 technical exercises → 1-3 interviews (hiring manager + teammates) → values conversation → reference checks.