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I am a dynamic Senior React / Next.js Full Stack Engineer with over a decade of experience designing and building high-performance, user-centric web applications serving millions globally. My expertise lies in React, Next.js, Node.js, and modern JavaScript/TypeScript with robust skills in state management and scalable microservice architectures. I thrive in optimizing frontend and backend solutions for maximum performance, SEO, and reliability while leading cross-functional teams and driving technology growth. My passion is delivering seamless, scalable, and secure digital experiences that power business success worldwide.…I am a dynamic Senior React / Next.js Full Stack Engineer with over a decade of experience designing and building high-performance, user-centric web applications serving millions globally. My expertise lies in React, Next.js, Node.js, and modern JavaScript/TypeScript with robust skills in state management and scalable microservice architectures. I thrive in optimizing frontend and backend solutions for maximum performance, SEO, and reliability while leading cross-functional teams and driving technology growth. My passion is delivering seamless, scalable, and secure digital experiences that power business success worldwide.

Andrei Alexandru

Full Stack Developer, Web Developer, Developer

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I am a dynamic Senior React / Next.js Full Stack Engineer with over a decade of experience designing and building high-performance, user-centric web applications serving millions globally. My expertise lies in React, Next.js, Node.js, and modern JavaScript/TypeScript with robust skills in state management and scalable microservice architectures. I thrive in optimizing frontend and backend solutions for maximum performance, SEO, and reliability while leading cross-functional teams and driving technology growth. My passion is delivering seamless, scalable, and secure digital experiences that power business success worldwide.…I am a dynamic Senior React / Next.js Full Stack Engineer with over a decade of experience designing and building high-performance, user-centric web applications serving millions globally. My expertise lies in React, Next.js, Node.js, and modern JavaScript/TypeScript with robust skills in state management and scalable microservice architectures. I thrive in optimizing frontend and backend solutions for maximum performance, SEO, and reliability while leading cross-functional teams and driving technology growth. My passion is delivering seamless, scalable, and secure digital experiences that power business success worldwide.

Available to hire

I am a dynamic Senior React / Next.js Full Stack Engineer with over a decade of experience designing and building high-performance, user-centric web applications serving millions globally. My expertise lies in React, Next.js, Node.js, and modern JavaScript/TypeScript with robust skills in state management and scalable microservice architectures.

I thrive in optimizing frontend and backend solutions for maximum performance, SEO, and reliability while leading cross-functional teams and driving technology growth. My passion is delivering seamless, scalable, and secure digital experiences that power business success worldwide.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

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Expert

Work Experience

Senior Full Stack Engineer at Kernix

July 1, 2025 - September 3, 2025

Led the development of a global financial web platform using React, Next.js, and Node.js, enhancing SEO by 45% and organic traffic by 32%. Built modular React components with TypeScript and Redux improving code reusability and reducing production defects. Architected real-time dashboards handling 500K+ concurrent user updates with low latency using WebSockets and Redis Pub/Sub. Optimized Next.js with ISR and edge functions, reducing page load by 36%. Integrated secure authentication with NextAuth.js and JWT for SSO. Automated CI/CD with Docker, Kubernetes, and GitHub Actions, cutting release cycles and achieving 99.98% uptime. Established monitoring with Grafana, Sentry, and Datadog, improving incident detection and customer satisfaction. Mentored a team of 6 developers, improving code quality and onboarding efficiency. Delivered a fintech analytics platform serving 2.5M+ users with 99.99% uptime, pioneered a cross-unit design system reducing duplication by 42%, and transitioned legacy

Senior React / Node.js Developer at TRIARE

March 1, 2022 - September 3, 2025

Engineered enterprise SaaS solutions for healthcare and finance using React, Node.js, and Next.js, ensuring industry compliance. Developed multi-tenant architecture supporting 50+ clients with role-based access control. Optimized API integrations reducing data-fetch times by 41% and improved PWAs increasing mobile adoption by 30%. Automated Docker and Kubernetes deployments achieving zero downtime and faster release frequency. Built real-time data pipelines for transaction anomaly detection with <5s response on 2M+ events daily. Developed live chat and notifications enhancing client support. Collaborated with designers improving UX/UI, boosting customer retention and satisfaction. Key achievements include launching an analytics suite handling 1M+ API requests daily with 99.98% uptime, enabling GDPR and HIPAA compliant healthcare solutions, and improving SEO visibility with Next.js SSR.

React JavaScript Developer at Empat

June 1, 2018 - September 3, 2025

Developed healthcare and finance platforms using React, JavaScript, and Node.js with over 100K daily users. Delivered secure digital prescriptions, payments, and scheduling features ensuring HIPAA and GDPR compliance. Implemented modular front-end architecture improving maintainability and feature delivery speed. Optimized database queries for MongoDB and PostgreSQL enhancing data retrieval. Improved Next.js SSG/SSR performance reducing TTFB and boosting mobile engagement. Automated tests with Jest and Cypress achieving 80% coverage and reduced defects. Delivered reliable authentication using JWT, increasing system reliability. Participated actively in Agile ceremonies achieving 94% on-time delivery. Spearheaded a healthcare management platform widely adopted by patients and providers, increasing operational efficiency and company growth.