Full Stack Developer

🕒 June 23, 2025

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CryptoNext Security

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2019

🔒 Cybersecurity

₿ Crypto

🏢 Enterprise

💰 Non Equity Assistance on 2019-03

Cybersecurity • Crypto • Enterprise

CryptoNext Security is a company focused on post-quantum cryptography solutions to safeguard organizations from the emerging threats posed by quantum computing. They develop comprehensive tools and services that assist businesses in migrating to quantum-resistant cryptography, including evaluation, discovery, remediation, and management of cryptographic policies. With their Quantum Safe Software Suite and extensive support services, CryptoNext Security aims to ensure a secure transition to post-quantum standards for a variety of applications, including secure communications and data management.

📋 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

• 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.