FullStack Developper

CryptoNext Security is a deeptech startup specializing in post‑quantum cryptography. Our solutions help businesses and institutions prepare for a future where quantum computers will challenge traditional data security. We work with leading clients in finance, defense, and telecommunications.

Responsibilities

• Design and develop React‑based user interfaces for our post‑quantum cryptography products.
• Collaborate with Product and Backend teams to ensure a smooth and intuitive user experience.
• Integrate REST APIs to interact with our backend services.
• Participate in code reviews and apply best practices (unit testing, continuous integration, documentation).
• Contribute to frontend architecture improvements by suggesting technological upgrades and refactorings .
• Enable improvement of our products even if outside of your common scope.
• Embrace our frontend team work principles: “Done over perfect” / we ship/deliver fast: KISS , DRY (don’t repeat yourself), SOLID .
• Optimize performance and ensure cross‑browser and cross‑device compatibility.

Requirements

• Strong expertise in React / Next.js and its ecosystem (React Hooks, Context API).
• Excellent knowledge of TypeScript and robust programming principles.
• Experience with modern UI libraries (Tailwind, or chadcn/ui).
• Experience integrating REST APIs .
• Good grasp of frontend performance optimization and related tools (Webpack, Vite, CoreWebVitals).
• Experience with frontend testing frameworks (Jest, React Testing Library, Cypress).
• Familiarity with Git, CI/CD pipelines, and DevOps for automated integration and deployment.

Bonus Skills

• gRPC .
• Knowledge of secure coding practices and application security.
• Basic understanding of cryptography and cybersecurity .
• Experience in a startup or deeptech environment .

Benefits

• A stimulating work environment with cutting‑edge technological challenges.
• A fast‑growing startup with a team of passionate professionals.
• Flexible remote work options and an office in Paris .
• A competitive salary , aligned with our compensation philosophy.
• A deep dive into the exciting world of post‑quantum cryptography and cybersecurity.

Recruitment Process

• Initial discussion with our HR team to explore your background and motivations.
• Technical interview with a developer, including a coding test.
• Meeting with a manager to ensure alignment with our company culture.
• If successful, you’ll receive a final offer!