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- Tasks: Join us to develop high-performance backend systems and APIs for our innovative AI products.
- Company: Mistral AI, a pioneering tech company transforming society with cutting-edge AI solutions.
- Benefits: Enjoy competitive salary, equity options, health insurance, and generous parental leave.
- Why this job: Make a real impact on user experiences while working with the latest AI technologies.
- Qualifications: Degree in Computer Science or equivalent, with proficiency in Python or other backend languages.
- Other info: Collaborative culture with opportunities for growth and learning in a dynamic environment.
The predicted salary is between 36000 - 60000 £ 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.
Role summary
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.
Now, it would be ideal if you had experience with:
- 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
We're driven to build a strong company culture and are looking for individuals with solid alignment with the following:
- Reason with rigor
- 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
Software Engineer, Backend (London) employer: The Rundown AI, Inc.
Contact Detail:
The Rundown AI, Inc. 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 preferred backend language, whether it's Python, JavaScript, or something else. Practice common algorithms and data structures, and don’t forget to explain your thought process during the coding challenge.
✨Tip Number 3
Show off your problem-solving skills! During interviews, be ready to tackle complex engineering challenges. Think aloud and demonstrate how you approach problems, as this will showcase your analytical mindset and creativity.
✨Tip Number 4
Don’t forget to highlight your collaborative spirit! Mistral values teamwork, so share examples of how you've worked with cross-functional teams in the past. This will show that you’re not just a great coder, but also a team player who fits into their culture.
We think you need these skills to ace Software Engineer, Backend (London)
Some tips for your application 🫡
Tailor Your CV: Make sure your CV reflects the skills and experiences that align with the Backend Engineer role. Highlight your proficiency in Python or any other backend languages, and don’t forget to mention any relevant projects or achievements!
Craft a Compelling Cover Letter: Your cover letter is your chance to show us your passion for AI and software engineering. Share why you want to join Mistral AI and how you can contribute to our mission of transforming society through technology.
Showcase Your Problem-Solving Skills: In your application, give examples of complex engineering challenges you've tackled. We love seeing how you approach problems and innovate solutions, so don’t hold back on sharing your thought process!
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands and shows us you’re serious about joining our dynamic team!
How to prepare for a job interview at The Rundown AI, Inc.
✨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, as this is crucial for demonstrating your skills.
✨Understand the Company Culture
Familiarise yourself with Mistral AI's culture and values. They value low-ego, team-oriented individuals who are eager to learn. Be ready to discuss how your personal values align with theirs and provide examples of how you've worked collaboratively in the past.
✨Ask Insightful Questions
Prepare thoughtful questions about the role, team dynamics, and the projects you might be working on. This shows your genuine interest in the position and helps you assess if the company is the right fit for you. Consider asking about their approach to AI integration or how they handle performance optimisation.
