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Cryptonext Security

Full Stack Developer

Paris, France
React Next.js TypeScript REST APIs Git DevOps gRPC
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Description

FullStack Developper

Location: Paris, Île-de-France, France

Department: Research & Development

Workplace: hybrid

Employment Type: full

Description

Who we are

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.

On a daily basis, you will

  • 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.
  • Optimize performance and ensure cross-browser and cross-device compatibility.
  • 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

Requirements

The skills you'll need

  • 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

The team you'll be joining

You will be part of our R&D team, working closely with backend developers, the product team, and UX/UI designers. You will report to the  and collaborate with other departments to build high-performance, user-friendly interfaces tailored to our clients’ needs.

Our recruitment process

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

What’s in it for you at CryptoNext

  • 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.

Ready to join the adventure? 🚀 Apply now!

 

Cryptonext Security
Cryptonext Security

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