Senior FullStack Developer

🕒 November 14, 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

• As a Full Stack Developer, you will contribute to the development of DISCOVERY, our next-generation observability and orchestration platform. • Work across the entire stack — backend services, data flows, and frontend interfaces — collaborating closely with product, backend, and infrastructure teams. • Design, develop, and maintain full-stack features for the DISCOVERY platform. • Build modern, responsive React front-ends integrated with Node.js and Kafka backends. • Participate in architectural decisions and propose technical improvements aligned with long-term product vision. • Design and implement REST and event-driven APIs. • Ensure performance, scalability, and resilience across distributed components. • Collaborate with backend engineers on domain modeling, API contracts, and data flows. • Implement advanced data visualization and monitoring features using the ELK stack. • Integrate backend logs, metrics, and analytics into frontend dashboards. • Participate in code reviews and uphold high engineering standards. • Contribute to technical documentation and promote software craftsmanship. • Apply KISS, DRY, SOLID, and pragmatic engineering principles. • Contribute to deployment workflows, CI/CD pipelines, and automation initiatives. • Work with Docker/Kubernetes-based environments to ensure smooth delivery.

🎯 Requirements

• 10+ years of experience in software development, ideally in a software editor or deeptech environment. • Master’s degree from a French engineering school or European equivalent. • Strong hands-on expertise in: • - Node.js • - React • - TypeScript • Strong understanding of Docker, Kubernetes, and containerized deployments. • Experience with message-driven architectures (Kafka or equivalent). • Solid understanding of the ELK stack and its application in observability/analytics contexts. • Comfortable with CI/CD, Git workflows, automated testing, and modern DevOps practices. • Deep grasp of software design principles and maintainability. • Fluent in English.

🏖️ Benefits

• Join a fast-growing deeptech company at the cutting edge of quantum-safe cybersecurity. • Work on challenging engineering problems using modern technologies. • Build next-generation observability tools for cryptographic operations. • Flexible remote policy + office in central Paris. • Competitive compensation aligned with your seniority and expertise. • Direct impact on the future of secure communications.