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Back-End Developer Rust F/H

Join Thinkeo as a Back-End Developer and help power our multi-agent AI platform with a high-performance Rust backend. You will design scalable, reliable systems, work with cutting-edge AI orchestration, and ship features from idea to production. You will collaborate with our SvelteJS frontend team and Product Manager, and ensure stability, scaling, and high performance in microservices and Kubernetes.

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Permanent contract
Paris
Occasional remote
Salary: €50K to 70K
Starting date: September 07, 2025
Key missions

Concevoir et améliorer la couche d'orchestration, y compris l'exécution des DAG et les agents sans état.

Développer des API robustes et des intégrations LLM, y compris les complétions, les RAGs et les embeddings.

Écrire du code Rust propre et bien testé, en veillant à la stabilité, à l'évolutivité et à la haute performance des microservices.

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Questions and answers about the job

The position

Job description

Join Thinkeo and help power our multi-agent AI platform with a high-performance Rust backend. As our Rust Back-End Developer, you’ll design scalable, reliable systems, work with cutting-edge AI orchestration, and ship features from idea to production.

What you’ll do

  • Build and improve our orchestration layer (DAG execution, stateless agents)

  • Develop robust APIs and LLM integrations (completions, RAGs, embeddings, etc.)

  • Write clean, well-tested Rust code with Axum and Diesel

  • Ensure stability, scaling, and high performance in microservices & Kubernetes

  • Collaborate with our SvelteJS frontend team and Product Manager


Preferred experience

What we’re looking for

  • Strong skills in Rust, or in a similar systems language with the willingness to master Rust

  • 3+ years of experience building backend or full-stack systems in production

  • Solid SQL expertise, ideally with PostgreSQL and Diesel ORM

  • Experience with distributed systems, containerization, and orchestration (Docker, Kubernetes)

  • Commitment to code quality, testing, and long-term maintainability

Tech stack

  • Backend: Rust, Axum, Diesel, Sentry

  • Frontend: Svelte 5, TypeScript

  • Database: PostgreSQL

  • Infrastructure / DevOps: Docker, Kubernetes, CI/CD

  • Strong focus on testing and clean, reliable code


Recruitment process

What We Offer

  • Permanent contract (CDI), work in Paris or remotely

  • Join a Eurazeo-backed startup with competitive salary and equity opportunities

  • Premium health insurance for you and your family

  • Your choice of computer equipment

  • Regular team events

  • Work on a product used by major companies (61% weekly active users)

  • A small, dedicated team of passionate people

  • Help shape how businesses use AI in real situations

Our culture

At Thinkeo, everyone makes a real difference. We value independence, ownership, and quality work. We focus on building a product that’s truly useful. We encourage quick feedback, short development cycles, and high standards - all with kindness and support. We value simplicity, clarity, and work well done.

About working together

Our CEO Damien believes in giving the product team freedom to create. We’re tackling complex challenges in Rust and we want people who thrive on ownership. While meeting in person occasionally is valuable, we focus on finding great talent regardless of location. We value clear communication and independence during work sprints.

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