Software Engineer, Mistral AI

Inference

Salary not provided

Python

C++

Mid and Senior level

London

Paris

More information about location

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

Python

C++

Mid and Senior level

London

Paris

More information about location

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

Proven experience in C++ and Python, with a strong focus on backend development and performance optimization
A strong understanding of infrastructure, continuous integration, and continuous development principles
Interest in applying backend development skills to AI-driven solutions, involving large language models
The ability to independently craft top-tier solutions focused on backend systems while considering the overall user experience
Eagerness to quickly adapt to emerging technologies within a dynamic development landscape
The desire to gain insights into AI software intricacies and contribute to the team with their backend development expertise
We value strong candidates with verifiable accomplishments

What the job involves

We are seeking an experienced backend engineer to join our development team
Architect and optimize the inference backbone of our platform
Drive the acquisition and automation of benchmarks at micro and macro scale
The ideal candidate will play a pivotal role within our AI engineering team, collaborating closely with the team lead to drive the development and implementation of innovative products
You will contribute your backend expertise to shape the future of AI-powered applications, working alongside a dynamic team to turn vision into reality

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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