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About Us
We are a French company specializing in the development and operation of critical computing infrastructures, with a focus on hyperdense data centers dedicated to artificial intelligence.
Sesterce was built on a clear conviction: Europe needs sovereign, high-performance, and decarbonized AI infrastructure. In full growth mode, our mission is to design, build, and operate next-generation computing campuses across France and internationally. Our solutions power the most demanding AI workloads for leading clients in the industry.
To strengthen our Engineering team, we are looking for a versatile, quality-driven, and collaborative Full Stack Developer.
Your Responsibilities
Frontend Development
Education & Experience
We are a French company specializing in the development and operation of critical computing infrastructures, with a focus on hyperdense data centers dedicated to artificial intelligence.
Sesterce was built on a clear conviction: Europe needs sovereign, high-performance, and decarbonized AI infrastructure. In full growth mode, our mission is to design, build, and operate next-generation computing campuses across France and internationally. Our solutions power the most demanding AI workloads for leading clients in the industry.
To strengthen our Engineering team, we are looking for a versatile, quality-driven, and collaborative Full Stack Developer.
Your Responsibilities
Frontend Development
- Build modern, responsive, and accessible UIs with Next.js and React.js
- Implement UI components in collaboration with UX/UI designers (Figma, Storybook)
- Optimize front-end performance (Core Web Vitals, lazy loading, code splitting, SSR/SSG)
- Write frontend tests (Jest, React Testing Library, Cypress)
- Design and build RESTful APIs and backend services with Node.js
- Model and manage databases (MongoDB, MySQL, PostgreSQL)
- Implement authentication and authorization (JWT, OAuth 2.0)
- Secure APIs (input validation, rate limiting, error handling, logging)
- Build integrations with third-party systems (monitoring APIs, business tools)
- Write clean, maintainable code following SOLID principles and proven design patterns
- Conduct constructive code reviews and participate actively in pull request processes
- Optimize applications for speed, scalability, and resilience
- Write technical documentation (API docs, architecture guides, READMEs)
- Participate in sprint planning and backlog refinement
- Collaborate closely with product, design, infrastructure, and ops teams
- Monitor application performance in production
Education & Experience
- Bachelor's in Computer Science or equivalent
- Proven Full Stack experience with Node.js and Next.js
- Proficient: JavaScript/TypeScript, HTML, CSS, React.js, Next.js, Node.js
- Databases: MongoDB, MySQL, PostgreSQL
- RESTful API design and Git (branching, PR workflows)
- Testing tools (Jest, Cypress) are a plus
- Blockchain/Web3 experience is a plus
- Quality-driven with a strong sense of ownership
- Collaborative, communicative, and comfortable in an agile environment
- English: professional level required
- French: a plus
- Build the web platform that powers Sesterce's GPU infrastructure and client experience
- Work end-to-end across the full stack: from pixel-perfect UIs to robust backend APIs
- Ship in a fast-moving startup where your code is in production and makes a real difference
- A tight-knit, demanding, and passionate team where every contribution matters
- Competitive package: salary based on profile, health insurance, transportation
- Send your application (resume + cover letter) to: [email protected]
- Please use the reference "DEV-FS-MRS" in the subject line of your email.
Key Skills
Ranked by relevance
mysql
ai
product design
restful apis
responsive
reactjs
react
figma
oauth
css
git
ui
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- Posted
- Apr 08, 2026
- Type
- Full-time
- Level
- Not Applicable
- Location
- Us
- Company
- Sesterce
Industries
IT Services
IT Consulting
Categories
Engineering
Information Technology
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