Open to opportunities

Ugochukwu Stephen Mbonu

@ugochukwustephenmbon

Full-stack Software Developer delivering revenue-impacting microservices with Java, AWS, and modern frontend frameworks.

United States

Message

What I'm looking for

I’m looking to build scalable microservices and full-stack products on AWS, using strong system design and performance optimization. I want a team that values Agile delivery and code quality, and where I can continue mentoring while driving measurable business impact.

I’m a FullStack Software Developer with 5+ years of experience building backend/frontend systems, scalable microservices, and cloud-based solutions. I focus on mission-critical services that improve performance, reliability, and measurable business outcomes.

At Western Union, I designed and deployed a full-stack pricing microservice with Spring Boot, AWS, PostgreSQL, and Angular, cutting pricing adjustment time from two weeks to hours and boosting revenue growth from 36% to 62% (+$600K) across four Latin America corridors. I also re-engineered a core country-currency API used across 10+ services to reduce response times from 7s to under 1s with zero timeouts, built a large-scale competitor analysis data system (1m20s generation time), and delivered real-time transaction-limiting at 5,000+ requests/minute using Redis and the FICO decision engine.

Experience

Work history, roles, and key accomplishments

Software Developer

Western Union

Jan 2023 - Jun 2026 (3 years 5 months)

Designed and deployed full-stack pricing microservices using Spring Boot, AWS, PostgreSQL, and Angular, reducing pricing adjustment time from two weeks to hours. Re-engineered a core country-currency API and built systems for competitor analysis and real-time transaction limiting to improve reliability and enable revenue growth (+$600K).

Spring Boot AWS PostgreSQL Angular Microservices Redis System Design Performance Optimization Mentorship REST APIs

Full-stack Developer

NIAR/T3

Oct 2021 - Dec 2022 (1 year 2 months)

Developed and modernized web and mobile applications for multiple clients using React.js, React Native, and Node.js. Implemented optimized image fetching with local caching (rn-fetch-blob) to reduce load times and improve offline reliability.

React React Native Node HTML Rn Fetch Blob Caching Offline Reliability

Web Developer

CODN Web Services

Sep 2020 - Jan 2021 (4 months)

Built a secure eCommerce platform using PHP, React.js, and Node.js with payment gateway integration, product listings, cart abandonment notifications, and real-time customer chat. Authored documentation to streamline development handoffs and improve client satisfaction (+8% positive feedback).

PHP React Node.Js Development Payment Integration Product Listing Technical Documentation