Software Engineer, Security
Software Engineer, Security

Software Engineer, Security

London Full-Time 43200 - 72000 ÂŁ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Develop and optimise secure systems while collaborating with diverse teams.
  • Company: Mistral AI is revolutionising AI to enhance creativity and productivity globally.
  • Benefits: Enjoy competitive salary, health insurance, remote work flexibility, and generous parental leave.
  • Why this job: Join a dynamic team shaping the future of AI with meaningful impact.
  • Qualifications: Master's in Engineering or Computer Science; experience in software engineering and security projects required.
  • Other info: Position based in Paris with potential for remote work; onboarding includes travel and accommodation.

The predicted salary is between 43200 - 72000 ÂŁ per year.

Join to apply for the Software Engineer, Security role at Mistral AI

Join to apply for the Software Engineer, Security role at Mistral AI

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.

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 Summary
We are seeking a talented and experienced software engineer to join our Engineering team.
You\’ll work closely with the research, product, solution and program management teams to serve our frontier models to customers wherever they use our technology.
You will be involved in key components of our technology, including model deployment, performance optimization, real time streaming services, DX tools implementation, cloud infrastructure management…
Additionally, you will work to evangelize the Engineering team with best practices in secure coding and architecture.
The role is based in Paris and reports to the Head of Engineering.
What you will do
Software Engineering (80%)

  • New model releases: you will ensure fast and reliable launch of new models and new features to customers
  • System design and development: help build systems, APIs and interfaces to interact with large language models
  • Build and test infrastructure: you will work to improve and extend the infrastructure needed to package, deploy and integrate our core technology within first-party systems and third-party platforms
  • Safety: you will help solve the unique challenges that come with maintaining AI safety on third-party platforms
  • Observability and Monitoring: you will collaborate closely with both internal and external stakeholders to ensure our services achieve high availability and deliver state-of-the-art performance for our users
  • Performance and Resource Optimization: you will be responsible for identifying and solving complex system problems, with the aim to optimize the performance (latency and throughput) of multiple layers of large-scale distributed systems

Security Focus (20%)

  • Security Advocacy: Act as a security advocate within the team, sharing best practices and raising awareness about secure coding principles
  • Secure System Development: Design and implement robust, secure systems, ensuring that all development adheres to the highest security standards
  • Code and Architecture Reviews: Conduct in-depth reviews of code and architectural designs, focusing on identifying and mitigating security vulnerabilities
  • Vulnerability Management: Identify, address, and mitigate vulnerabilities in applications and systems, ensuring proactive measures are in place
  • Cross-Team Collaboration: Work collaboratively across teams to provide security guidance, ensuring security considerations are integrated into development processes
  • Secure Coding Practices: Write secure, maintainable code while considering the broader implications and risks of security decisions

You may be a good fit if:

  • You hold a Master’s degree in Engineering or Computer Science
  • You have a proven experience as a Software Engineer with a focus on backend or fullstack development
  • You have hands-on experience working on security projects, integrating security considerations into software products or a past experience as SRE (Site Reliability Engineering)
  • You have strong development skills in Python, with a track record of building and maintaining secure systems
  • You’re able to review code and system architectures with a security-first mindset, identifying risks and proposing solutions
  • You are autonomous and a self-starter
  • You are a proactive problem-solver with a continuous improvement mindset

Ideally you have

  • Familiarity with industry standards for secure software development (e.g., OWASP, ISO 27001)
  • Experience with vulnerability scanning tools and secure development lifecycle (SDLC) practices

Location & Remote
This role is primarily based at our HQ in Paris, France. We will prioritize candidates who either reside in Paris 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. Our remote work policy is designed to offer flexibility, enhance work-life balance, and boost productivity. The number of remote workdays is determined by each manager, taking into account individual autonomy and specific circumstances—such as increased flexibility during the summer months. Regardless of the arrangement, we expect all employees to maintain open lines of communication with their teams and be available during core working hours.
In certain specific situations, we will also consider remote candidates based in one of the countries listed in this job posting (currently France, UK, Germany, Netherlands, Spain and Italy). In that case, we ask all new hires to visit our Paris office:

  • for the first month 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

Seniority level

  • Seniority level

    Not Applicable

Employment type

  • Employment type

    Full-time

Job function

  • Job function

    Engineering and Information Technology

  • Industries

    Technology, Information and Internet

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Software Engineer, Security employer: Mistral AI

Mistral AI is an exceptional employer that fosters a dynamic and collaborative work culture, where innovation thrives and employees are empowered to make a meaningful impact in the field of AI. Based in the vibrant city of Paris, we offer competitive salaries, comprehensive health benefits, and generous parental leave, alongside opportunities for professional growth and development. Our commitment to in-person collaboration enhances team relationships, while our flexible remote work policy supports work-life balance, making Mistral AI an attractive place for talented individuals seeking rewarding careers in technology.
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Contact Detail:

Mistral AI Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Software Engineer, Security

✨Tip Number 1

Familiarise yourself with Mistral AI's products and technology. Understanding their AI platform and how it integrates into daily working life will help you demonstrate your enthusiasm and knowledge during interviews.

✨Tip Number 2

Highlight your experience with secure coding practices and any relevant security projects you've worked on. Mistral AI values a security-first mindset, so showcasing your expertise in this area can set you apart from other candidates.

✨Tip Number 3

Network with current or former employees of Mistral AI. Engaging with them on platforms like LinkedIn can provide you with insider insights about the company culture and expectations, which can be invaluable during the interview process.

✨Tip Number 4

Prepare to discuss your problem-solving skills and how you've optimised performance in past projects. Mistral AI is looking for proactive individuals who can tackle complex system challenges, so be ready to share specific examples.

We think you need these skills to ace Software Engineer, Security

Proficiency in Python
Backend or Fullstack Development Experience
Secure Coding Practices
Knowledge of OWASP and ISO 27001 Standards
Experience with Vulnerability Scanning Tools
System Design and Development
API Development
Performance Optimisation
Real-Time Streaming Services
Cloud Infrastructure Management
Code and Architecture Reviews
Cross-Team Collaboration
Problem-Solving Skills
Autonomous Work Ethic
Continuous Improvement Mindset

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights relevant experience in software engineering, particularly focusing on backend or fullstack development. Emphasise any security projects you've worked on and your proficiency in Python.

Craft a Strong Cover Letter: In your cover letter, express your passion for AI and how it aligns with Mistral AI's mission. Mention specific experiences that demonstrate your ability to work collaboratively and your understanding of secure coding practices.

Showcase Relevant Skills: Clearly outline your skills related to system design, performance optimisation, and security advocacy. Include any familiarity with industry standards like OWASP or ISO 27001, as well as experience with vulnerability scanning tools.

Highlight Continuous Improvement: Demonstrate your proactive problem-solving abilities and continuous improvement mindset. Provide examples of how you've identified and solved complex system problems in previous roles.

How to prepare for a job interview at Mistral AI

✨Understand the Company Culture

Before your interview, take some time to research Mistral AI's culture and values. They emphasise collaboration, creativity, and a low-ego environment. Showing that you align with these values can make a strong impression.

✨Showcase Your Security Knowledge

Given the role's focus on security, be prepared to discuss your experience with secure coding practices and vulnerability management. Highlight any relevant projects where you integrated security into software development.

✨Demonstrate Problem-Solving Skills

Mistral AI is looking for proactive problem-solvers. Be ready to share examples of complex challenges you've faced in previous roles and how you approached them, particularly in relation to system performance and security.

✨Prepare for Technical Questions

Expect technical questions related to Python development, system design, and security standards like OWASP. Brush up on your technical skills and be ready to demonstrate your knowledge through practical examples or coding exercises.

Software Engineer, Security
Mistral AI
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  • Software Engineer, Security

    London
    Full-Time
    43200 - 72000 ÂŁ / year (est.)

    Application deadline: 2027-08-28

  • M

    Mistral AI

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