JHJDEV Information

JHJDEV is a specialized software consultancy delivering production-grade mobile and web architectures. With over 15 years of experience across Europe, we bridge the gap between complex business requirements and robust, scalable engineering. We specialize in the React Native and Node.js ecosystems, partnering with startups and enterprises in Energy, Fintech, and Safety Tech to build secure, maintainable software. 🚀 Core Competencies Mobile-First Innovation: Expert React Native (Expo/NativeWind) development. We build offline-first architectures, complex state management systems (Redux/Zustand), and secure biometric integrations. Full-Stack Architecture: Backend-first design using Node.js, Fastify, and GraphQL. We implement real-time WebSockets, dual-API strategies, and secure identity management (Auth0/Cognito). DevOps & Security: Automated CI/CD, Docker containerization, end-to-end encryption, and observable infrastructure (AWS/Hetzner). 🏆 Proven Impact Safety Tech: Architected a full-stack emergency response platform (Get Kora) featuring live location tracking and SOS escalation. Fintech: Built secure financial planning apps (Diane Money) with AI-driven forecasting and bank-level compliance. Energy: Delivered mission-critical mobile tools for Shoreline Wind, ensuring stability for offshore operations in low-connectivity environments. How We Work JHJDEV operates with a focus on strict TypeScript enforcement and rapid iteration. Whether stabilizing legacy codebases or architecting new MVPs from the ground up, we bring senior-level expertise to every line of code. Stack: React Native, TypeScript, Node.js, GraphQL, AWS, Docker.