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Mistral AI

Senior Software Engineer, IDE - Paris

Hybrid

London, United kingdom

Full Time

09-04-2025

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Job Specifications

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

As a Senior Software Engineer specializing in IDE extension development at Mistral AI, you will be at the forefront of innovation, enhancing developer productivity and integrating cutting-edge AI capabilities into their IDE. Your role will be pivotal in bridging the gap between AI research and practical application, creating tools that empower developers to achieve more with less effort.

What you will do

Development and Maintenance: Design, develop, and maintain IDE extensions that enhance developer productivity and integrate with Mistral AI's Codestral model
Learning and Adaptation: Be open to learning new programming languages and technologies as needed to support the evolving needs of the project
Collaboration: Work closely with cross-functional teams, including AI researchers, product managers, and UX designers, to define and implement new features
Performance Optimization: Ensure the extensions are performant, scalable, and provide a seamless user experience
Documentation: Create and maintain comprehensive documentation for both internal and external users
Testing and Debugging: Implement robust testing strategies to identify and fix issues promptly
Stay up to date: Keep abreast of the latest trends and best practices in JavaScript development and AI integration

If we want to be more specific :

Add agent-type functionalities to extensions (automatic file creation, test generation, refactoring, etc.)
Improve the context provided to the model to enhance the quality of responses (tracking recent edits, capturing relevant surrounding code, etc.)
Enhance the chat experience (support for files/images, adding action commands from the terminal like "/explain" or "/terminal")
Implement new developer experiences

About You

Degree in Computer Science, Engineering, or a related field
Proficient in Typescript
Appetite to discover new languages - Kotlin experience is a plus
Strong problem-solving abilities and attention to detail
Excellent communication
Ability to work independently and manage multiple tasks
Low Ego and Team spirit mindset

Nice to have

Comfortable with UI development (for example React, Angular, Vue.js)

Remote

For this role, we do not require you to be based in a specific location outside of the countries listed in this job posting. In return, we expect you to be available for a monthly visit to one of our offices.

If you are based in France , Germany , or Spain , we ask that you be able to come to our Paris office for 3 days each month.

If you are based in the UK , we ask that you be able to come to our London office for 3 days each month.

Mistral AI will cover 100% of inter-country travel expenses and 50% of intra-country travel expenses.

Onboarding

We require all new hires to come to Paris for the first month when they start.

Hiring Process

Recruiter Screening (45min)
Hiring Manager Interview (30min)
Live-Coding interview (60min)
System Design Interview (60min)
Culture-fit discussion (30min)

About the Company

Frontier AI. In your hands. We believe in a future where AI is abundant and accessible. We aspire to empower the world to build with—and benefit from—the most significant technology of our time. Join us: https://jobs.lever.co/mistral/ Know more