Dhwrwmgwra B.

I help businesses fix, optimize, and modernize production web and mobile applications across React, Next.js, React Native, and the backend systems that support them. With 10+ years of experience, I specialize in solving complex full-stack problems, improving performance, modernizing existing applications, and getting products production-ready. I can step into an unfamiliar codebase, understand the architecture quickly, identify root causes, and deliver focused, production-ready improvements across the frontend, backend, database, and mobile layers. Core expertise: • React, Next.js, and React Native development • Full-stack feature development across frontend, backend, and database • React, Next.js, and React Native architecture • React and Next.js performance optimization • Core Web Vitals and frontend performance • Next.js SEO, rendering, metadata, and technical SEO • React Native app development, optimization, and modernization • Node.js, NestJS, FastAPI, REST APIs, and GraphQL • PostgreSQL, Prisma, Supabase, and Redis • API integration, authentication, payments, webhooks, and third-party services • Bug fixes and complex production issues • Legacy application modernization and migrations • Production readiness, reliability, and deployment preparation • Technical leadership, code reviews, and mentoring I have built and led production applications across real estate, rental and booking platforms, ecommerce, SaaS, EdTech, dynamic editors, and mobile products. My experience spans customer-facing applications, complex dashboards, business workflows, multi-tenant systems, payment flows, and React Native applications. I can take ownership at different levels, from fixing a difficult production issue or implementing a new web or mobile feature to building a full-stack feature across the UI, API, and database, leading architecture, establishing engineering standards, reviewing code, mentoring developers, and helping teams modernize an existing product. I also have strong backend experience with Node.js, NestJS, FastAPI, PostgreSQL, REST APIs, GraphQL, authentication, payments, webhooks, and third-party integrations, allowing me to take features from frontend or mobile UI through the API and database layers when needed. My approach is practical: understand the existing system first, identify the highest-impact problems, and improve what matters without introducing unnecessary complexity. Available for full-stack development, React and React Native development, focused fixes, short-term projects, modernization work, performance optimization, and technical leadership.