Frontend Software Engineer, Mistral AI

Salary not provided

Offers equity

React

Vue.js

Svelte

Mid and Senior level

Paris

Visa sponsorship available

Generative AI model developers

Job no longer available

Generative AI model developers

501-1000 employees

B2BArtificial IntelligenceDeep TechSaaS

Job no longer available

Salary not provided

Offers equity

React

Vue.js

Svelte

Mid and Senior level

Paris

Visa sponsorship available

501-1000 employees

B2BArtificial IntelligenceDeep TechSaaS

Company mission

To make frontier AI ubiquitous, and to provide tailor-made AI to all the builders.

Job

Company

Role

Who you are

+3 years of professional work experience
Master’s degree in Computer Science, Information Technology, or a related field
Excellent proficiency in front-end development, with mastery of one framework such as ReactJS, Svelte, Vue.js, HTMX… ReactJS is a big plus
Strong ability to create the smoothest user experience autonomously, for both developer facing and end-user facing products
Proven experience in a similar role, with a very strong preference for previous startup or fast-paced/demanding environments
Autonomous and self-starter profile

What the job involves

We are seeking an experienced Front-End Engineer (ReactJS) to join our Tech team
The role reports into our Head of Engineering
The role is Paris based
Develop user-facing internal and external applications using Mistral AI models for the various purposes enabled by LLM (chatbot, search engines, document answering, …)
Instrument Mistral AI products with developer-centric tools (e.g. dashboards, evaluation interfaces, …)
Build amazing experiences and neat interfaces in coordination with our team

Application process

Strong references are needed – in particular, a portfolio of successful projects would be greatly appreciated

Our take

Founded by Facebook AI researchers, Mistral AI focuses on developing open-source generative AI models to "make AI useful." It emerged in early 2023, quickly achieving a $260 million valuation.

Mistral features up to 176 billion parameters, and its open-source nature has sparked concerns about potential misuse. However, Mistral remains a formidable competitor in the AI landscape, challenging models from Google and Meta.

In 2025, Mistral secured a massive €1.7 billion funding round, raising its valuation to €11.7 billion. This Series B funding, led by European chip firm ASML, underscores significant interest in alternatives to ChatGPT and a push away from Silicon Valley dependence by European AI competitors.

Freddie

Company Specialist at Welcome to the Jungle

Company

Funding (last 2 of 5 rounds)

Sep 2025

$2.0bn

SERIES C

Jun 2024

$539.4m

SERIES B

Total funding: $3.1bn

Company benefits

Competitive bonus structure
Equity
Opportunities for professional growth and development

Company HQ

Villette, Paris, France

Leadership

Timothee Lacroix

(Co-Founder & CTO)

Previously PhD and Software Engineer Intern at Facebook and Visiting Undergraduate at CAlab UCSD

Guillaume Lample

(Co-Founder & Chief Scientist)

Research Student and Scientist at Facebook AI and Research Intern at Jane Street Capital

Arthur Mensch

(Co-Founder & CEO)

Previously Staff Research Scientist at DeepMind, Post-doc researcher at École normale supérieure, Visiting Researcher at NYU Courant Institute of Mathematical Sciences and PhD Student at Inria

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