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For Companies At a Glance
- Tasks: Develop scalable backend systems and APIs for our innovative AI products.
- Company: Join Mistral AI, a pioneering tech company transforming the future of AI.
- Benefits: Enjoy competitive salary, health insurance, remote work flexibility, and generous parental leave.
- Why this job: Make a real impact on user experiences with cutting-edge AI technology.
- Qualifications: Degree in Computer Science or equivalent, proficiency in Python or similar languages.
- Other info: Collaborative culture with excellent career growth opportunities and a dynamic team.
The predicted salary is between 30000 - 50000 £ per year.
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.
We are seeking passionate and skilled software engineers to join our team. As a Backend Engineer, you’ll contribute to the development of the core systems powering our three main products, AI Studio, Le Chat & Mistral Code, shaping how users and developers interact with our AI platform at scale. You’ll work on building reliable, high-performance backend systems and APIs that serve millions of users and developers. Your work will directly impact the developer and user experience, making it more engaging, efficient, and intuitive. We welcome engineers at all levels from fresh graduates to senior and staff engineers who are eager to learn, collaborate and ship impactful products.
What you will do
- Backend Development
- Design, develop and maintain scalable, robust backend features and APIs using modern frameworks
- Ensure high performance and reliability across our distributed systems
- Contribute to systems powering authentication, billing, AI tooling, observability, connectors, and developer experience
- System Architecture
- Design and implement efficient, secure and scalable architectures that support our fast-growing products
- Collaborate with infrastructure teams on deployment, monitoring, and performance optimization
- Code Quality
- Write clean, maintainable and well-documented code
- Participate in code reviews and contribute to technical standards and best practices
- Cross-functional Collaboration
- Work closely with product managers, front-end engineers, designers and data/AI engineers to deliver end-to-end features
- Partner with teams across AI Studio, Le Chat & Mistral Code to ensure consistent platform-wide experience
- Problem-Solving & Innovation
- Tackle complex engineering challenges, from distributed systems to AI product integration
- Stay up-to-date with new technologies (e.g., AI/LLM integration, observability, or backend frameworks) and bring them into production when relevant
About You
- Degree in Computer Science, Software Engineering, or equivalent practical experience
- Proficiency in Python or another backend language (JavaScript/TypeScript, C#, Golang). Engineers are assessed in their preferred language during a live coding session
- Strong understanding of backend fundamentals: APIs, databases, caching, messaging systems and distributed architectures
- Strong problem-solving abilities and attention to detail
- Ownership mindset capable of shipping end-to-end features with minimal oversight
- Excellent communication skills and collaborative attitude
- Team-oriented, low-ego mindset and curiosity for learning
Nice to have
- Front-end development (Typescript, React, NextJS...) or full-stack exposure
- Infrastructure management (Docker, CI/CD, Kubernetes, Helm, Terraform...)
- AI/ML engineering
- Observability and monitoring tools (Prometheus, Grafana, Datadog…)
- UX and product-centric mindset
Hiring Process
- Introduction call - 45 min
- Live-coding interview - 45 min
- System Design interview - 45 min
- Hiring Manager interview - 30 min
- Deep Dive Interview (only for leads & staff engineers) - 60 min
- Culture-fit discussion - 30 min
- Reference checks
Our Culture
- Reason with rigor
- Are you audacious enough?
- Make our customers succeed
- Ship early and accelerate
- Leave your ego aside
Location & Remote
The position is based in our London office 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. Each manager can decide the amount of days worked remotely based on autonomy and a specific context (e.g. more flexibility can occur during summer). In any case, employees are expected to maintain regular communication with their teams and be available during core working hours.
What we offer
- Competitive salary and equity (stock-options)
- Health insurance
- Transportation allowance
- Sport allowance
- Meal vouchers
- Private pension plan
- Generous parental leave policy
- Visa sponsorship
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
Software Engineer, Backend (London) employer: Mistral AI
Contact Detail:
Mistral AI Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Software Engineer, Backend (London)
✨Tip Number 1
Network like a pro! Reach out to current employees at Mistral AI on LinkedIn or other platforms. Ask them about their experiences and any tips they might have for the interview process. Personal connections can give you an edge!
✨Tip Number 2
Prepare for that live coding session! Brush up on your Python skills or whichever backend language you prefer. Practice common algorithms and data structures, and don’t forget to explain your thought process while coding – it shows your problem-solving approach.
✨Tip Number 3
Show off your collaborative spirit! During interviews, highlight your past experiences working in teams. Mistral values low-ego, team-oriented individuals, so share examples of how you’ve contributed to group projects and learned from others.
✨Tip Number 4
Don’t just focus on the technical stuff; be ready to discuss your passion for AI! Mistral is all about innovation and creativity, so share what excites you about AI and how you see it shaping the future. Let your enthusiasm shine through!
We think you need these skills to ace Software Engineer, Backend (London)
Some tips for your application 🫡
Show Your Passion for AI: When writing your application, let your enthusiasm for AI shine through! We love candidates who are excited about the potential of technology to transform society. Share any personal projects or experiences that highlight your passion.
Tailor Your Application: Make sure to customise your application to fit the role of Backend Engineer. Highlight your experience with backend development, APIs, and any relevant technologies. This shows us you’ve done your homework and are genuinely interested in the position.
Be Clear and Concise: Keep your application straightforward and to the point. Use clear language to describe your skills and experiences. We appreciate well-structured applications that make it easy for us to see what you bring to the table.
Apply Through Our Website: Don’t forget to submit your application through our website! It’s the best way for us to receive your details and ensures you’re considered for the role. Plus, it makes the whole process smoother for everyone involved.
How to prepare for a job interview at Mistral AI
✨Know Your Tech Stack
Make sure you’re well-versed in the technologies mentioned in the job description, especially Python or any other backend language you're comfortable with. Brush up on your knowledge of APIs, databases, and distributed systems, as these will likely come up during technical discussions.
✨Prepare for Live Coding
Since there's a live coding interview, practice coding problems that focus on backend development. Use platforms like LeetCode or HackerRank to simulate the experience. Focus on writing clean, maintainable code and be ready to explain your thought process as you code.
✨Understand System Design
Familiarise yourself with system design principles, especially around scalable architectures. Be prepared to discuss how you would approach designing backend systems that are efficient and secure, as this is a key part of the role.
✨Show Your Collaborative Spirit
Mistral values teamwork, so be ready to share examples of how you've successfully collaborated with others in past projects. Highlight your communication skills and your ability to work cross-functionally, as this will resonate well with their team-oriented culture.