Hamza M

Senior Full-Stack Engineer (Web, Mobile & AI) | Independent / Freelance

Fiverr • Freiberufler

Dec 2025 - Present • 5 mos

Working with founders and startups to build production-ready web apps, mobile apps, and AI-powered products. Owning end-to-end delivery from architecture through production release.

Senior Full-Stack Engineer | Codecraft Studios

CodeCraft Studios • Vollzeit

Sep 2024 - Dec 2025 • 1 yr 3 mos

Led end-to-end development of two production mobile applications (iOS & Android) and a supporting web platform in a fast-moving startup environment. Highlights: • Built and maintained subscription and payment systems using Apple IAP, Google Play Billing, and Stripe (trials, upgrades/downgrades, cancellations, webhooks) • Designed and integrated AI features, including custom RAG pipelines and LLM integrations • Owned production deployments, CI/CD pipelines, and cloud infrastructure • Managed App Store and Play Store releases, compliance, and production rollouts

Senior Full-Stack Engineer (Web & Mobile)

Wisoft Solutions • Vollzeit

Jan 2023 - Sep 2024 • 1 yr 8 mos

Developed web and mobile applications for multiple clients across different industries. Highlights: • Delivered production applications for real clients, from development through launch • Focused on performance, maintainability, and clean code practices • Worked closely with design, QA, and product teams in an Agile environment