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Aymen Hamzaoui

@aymenhamzaoui

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Software Engineer at Assembly who cut web app Largest Contentful Paint from 4.6s to 2.8s.

Tunisia

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At Assembly, I built and maintained Go backend services on AWS serverless architecture while working with the engineering team to ship end-to-end user-facing features. I also designed a data caching layer that reduced the web app’s Largest Contentful Paint from about 4.6 seconds to 2.8 seconds.

At Konnekti, I built a B2C application with a recommendation engine matching businesses and service providers, and turned Figma designs into production-ready experiences. Through Upwork, I delivered web development projects across frontend, backend, and full-stack work.

Experience

Work history, roles, and key accomplishments

Software Engineer

Assembly

Mar 2020 - Sep 2026 (6 years 6 months)

Maintained high engineering activity with 1,600+ GitHub contributions in a year, collaborated with a 17-person team, and built backend services on AWS serverless architecture using Go and Lambda. Designed a caching layer that cut LCP by ~38% and ran weekly design syncs.

React JavaScript Go Gin AWS Lambda Serverless Claude Code Git GitHub Caching Performance Optimization Issue Triage Customer Support

Freelance Software Developer

Upwork

Jan 2018 - Dec 2022 (4 years 11 months)

Delivered 10+ freelance web development projects across frontend, backend, and full-stack builds. Achieved Upwork Top Rated status and managed full project lifecycle independently.

Web Development Frontend Development Backend Development Fullstack Development Client Communication Project Management

Full-Stack Developer

Konnekti

Jan 2018 - Jul 2019 (1 year 6 months)

Built a B2C application with a recommendation engine, converted Figma designs into production-ready experiences, and developed automated test suites with Jasmine.

React JavaScript Figma Jasmine Testing Recommendation Engine B2C