Open to opportunities

youssef lawendy

@yousseflawendy

Message

I build reliable Java modules, real-time systems, and custom commerce applications for live servers.

United States

Message

What I'm looking for

I'm looking to build reliable Java systems, solve production performance issues, and contribute to products with real users and live operational impact.

I build and maintain custom Java modules on live servers supporting 60–100 concurrent users. As an independent contractor, I created an inventory and commerce application from scratch, including a custom UI, auction system, and SQLite and JSON storage.

I've delivered real-time data displays with more than 50 custom views, user isolation, and live API integrations across six releases. I rewrote loading logic asynchronously to eliminate thread locks during traffic spikes and created compatibility patches for third-party library conflicts causing lag.

I also manage ProGuard obfuscation for production JARs, multiple GitHub repositories, and GraalVM JDK 21 configuration for uptime. My earlier field, operations, data-entry, and customer-facing roles strengthened my safety focus, accuracy, discretion, and ability to solve issues under pressure.

Experience

Work history, roles, and key accomplishments

Java Developer

Independent / Contract

Nov 2023 - Jan 2026 (2 years 2 months)

Built and maintained custom Java modules on live servers with 60-100 concurrent users, including an inventory and commerce app with custom UI, auction system, and storage split across SQLite and JSON. Managed real-time data display with 50+ custom views, user isolation, and live API integrations across six releases.