Salah A.

I build and fix backend systems that businesses run on: APIs, integrations, reports and dashboards, on Java Spring Boot and Node.js/NestJS, deployed on AWS. Top Rated, 39 Upwork jobs, 4+ years in production. RECENT WORK - Nawy, Egypt's largest real estate marketplace: full stack engineer on Next.js and NestJS. Built role-based partner dashboards, BullMQ background jobs, event-driven processing on AWS SNS/SQS, an audit service with request tracing across services, and S3 report exports. - Shared user management service: authentication, RBAC and user administration used by several web and mobile apps. - Reporting platform for a German travel-tech company (ongoing): Spring Boot reports and dashboards built on several internal APIs, with PDF/Excel/CSV exports, caching, performance work and GitLab CI/CD. - API integrations: e.g. moving candidate data from Recruitee to Zoho Recruit, plus data extraction and migration jobs. WHAT I CAN DO FOR YOU - Build or extend REST APIs and microservices (Spring Boot, NestJS, Express, Laravel) - Connect your systems to third-party APIs and keep the data in sync - Speed up slow reports, queries and endpoints (PostgreSQL, MySQL, MongoDB) - Take over an existing codebase, find what's broken, and fix it - Set up Docker, CI/CD pipelines and AWS deployments (ECS, S3, CloudFront, SNS/SQS) - Build the React/Next.js frontend when the project needs one HOW I WORK - I start by reviewing your code or requirements and send a written plan with milestones and an estimate - Code goes to your repository in small commits, so you own everything from day one - Regular progress updates, and honest timelines - Clear docs: API references, ERDs, and handover notes Send me your project details or your bug list, and I'll reply with a concrete plan.