Software Engineer, Knowledge and Search

About Mistral

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.

About Mistral

At Mistral AI, we believe in the power of AI to simplify tasks, save time, and enhance learning and creativity. Our technology is designed to integrate seamlessly into daily working life.

We democratize AI through high-performance, optimized, open-source and cutting-edge models, products and solutions. Our comprehensive AI platform is designed to meet enterprise needs, whether on-premises or in cloud environments. Our offerings include le Chat, the AI assistant for life and work.

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 France, USA, UK, Germany and Singapore. We are creative, low-ego and team-spirited.

Join us to be part of a pioneering company shaping the future of AI. Together, we can make a meaningful impact. See more about our culture on https://mistral.ai/careers.

Role Summary

We are seeking a talented and experienced software engineer to join our Knowledge and Search engineering team. You will be responsible for designing, implementing and scaling our search capabilities supporting the needs of our users and internal systems.

🧢 Reporting line : VP of Engineering

📍 Location : Paris (France) or London (UK)

What you will do

Key Responsibilities 

The Knowledge & Search team is the backbone that connects our customers to the information they need. We are looking for an experienced software engineer to lead our indexing and searching capabilities. In this role, you will work closely with our data and infrastructure teams to build, maintain and scale our search platform while ensuring a high-level of performance and reliability.

Your responsibilities include (but may not be limited to):

• Building, maintaining and enhancing a fast, reliable and scalable indexing and searching capabilities (web and knowledge)

• Working with search-oriented databases to optimise and fine-tune full search pipelines from document ingestion to retrieval

• Owning our information retrieval systems serving both our internal needs as well as our enterprise customers

• Ensuring that our search capabilities meet the increasing demands of our customers

• Collaborate with internal and external stakeholders to push the boundaries of search reliability, performance, and scale across a range and cloud-native and on-premise services.

About you

• 7+ years of relevant professional work experience

• Master’s degree in Computer Science, Information Technology or a related field

• Experience building and scaling distributed search engine systems

• Excellent proficiency in backend software development (Python, Go, C++, Rust...)

• Solid proficiency in infrastructure management (Docker, CI/CD, Helm, K8s, Terraform...)

• Good knowledge of cloud-native ecosystems

• Autonomous and self-starter

• Ability to communicate with influence

Now, it would be ideal if you had experience with:

• AI/ML engineering

Hiring Process

Here is what you should expect:

• Introduction call - 30 min

• Hiring Manager Interview - 30 min

• Live-coding Interview (Python) - 45 min

• System Design Interview - 45 min

• Optional: Deep Dive Interview (Staff/Lead specific) - 60 min

• Culture-fit discussion - 30 min

• References

Location & Remote

This role is primarily based at one of our European offices (Paris, France and London, UK). We will prioritize candidates who either reside there or are open to relocating. We strongly believe in the value of in-person collaboration to foster strong relationships and seamless communication within our team.

In certain specific situations, we will also consider remote candidates based in one of the countries listed in this job posting — currently France & UK. In that case, we ask all new hires to visit our local office:

•  for the first week of their onboarding (accommodation and travelling covered)

•  then at least 3 days per month

What we offer

💰 Competitive salary and equity

🧑‍⚕️ Health insurance

🚴 Transportation allowance

🥎 Sport allowance

🥕 Meal vouchers

💰 Private pension plan

🍼 Parental : Generous parental leave policy

🌎 Visa sponsorship

By applying, you agree to our Applicant Privacy Policy.

What do we offer?

We support our employees’ well-being, growth, and work-life balance, with a range of global benefits designed to meet the diverse needs of our team members worldwide.

Health & Family

• Healthcare Coverage
  100% employer-sponsored premium plans for medical, dental, and vision care for you and your dependents.

• Parental Leave
  20 weeks of paid leave for all primary parents.

• Childcare Support
  Reserved daycare seats or financial assistance for working parents.

Financial & Career Planning

• Retirement Plans
  Competitive employer-matched contributions in applicable markets (e.g., 6% 401k match in the US, 5% pension contribution in the UK) to secure your financial future.

• Relocation Support
  Financial assistance for moving expenses, visa sponsorship, and settling-in services for you and your family.

Daily Life & Wellness

• Meal Allowances
  Monthly stipends, vouchers, or catered in-office meals, depending on your office location.

• Transportation Support
  Monthly allowances for public transport, parking, or sustainable mobility

• Fitness & Wellness
  Subsidies or memberships for gyms, wellness programs, or fitness activities

Privacy Policy

Your privacy matters to us. You can learn more about how we handle your personal data in our Applicant Privacy Policy.