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
- 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! 🚀
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!
Top Skills
What We Do
CryptoNext Security is a European software vendor based in Paris, an industry leader in quantum-proof cryptography (PQC) solutions. Our vision and the solutions we are developing are designed to manage the complete lifecycle of post-quantum migration, including the phases of discovery, remediation, and management. Founded in 2019 after 20+ years of academic research within the prestigious INRIA, CNRS and Sorbonne University, CryptoNext Security is identified by Gartner as part of its Top 5 in PQC and is, to date, the first European company selected by NIST's NCCoE group dedicated to the best PQC migration practices. We are developing an integrated, quantum-safe remediation suite allowing for the automation of PQC migration for IT/OT systems, infrastructures and applications. Our objective is to help businesses and HW/SW vendors face the quantum threat in an efficient, agile and sustainable way.
