Full-Stack & Backend Engineer · Java, Spring Boot, AWS | FinTech Systems @ CashPlus Casablanca, Morocco Portfolio | LinkedIn | Writing Email: ahdoufwalid@gmail.com

I build backend and security infrastructure for a fintech platform handling 300K+ daily users — API gateways, distributed rate limiting, OAuth2/OIDC via Keycloak, and event-driven services. Outside of that I write about the internals of what I ship, and build small, opinionated tools on the side: an offline file-encryption app, a fork of an open-source money manager, and a couple of developer-tooling browser extensions.

I like systems that fail loudly and obviously, not quietly and expensively.

• Latch — stateless, offline file encryption for Android. Envelope encryption (XChaCha20-Poly1305 streaming AEAD) — no account, no cloud, no server.
• Mizan Wallet — open-source money manager (fork/continuation of Ivy Wallet), rebuilt with a dedicated Zakat-tracking domain layer.
• 5Hosson — Quran memorization app (React Native/Expo) built around Dr. Saeed Abu Al-Ala Hamza's Five Fortresses method: a pure scheduling engine with test coverage, a 604-page Mushaf progress grid, 9 configurable local reminders, full Arabic RTL UI, fully offline. (all three repos are private while they stabilize — happy to share access, just ask)

• keycloak-extensions — custom Keycloak providers adding realm-level TOTP validation and extended auth flows. (Java, Keycloak)
• TalibHub — a social platform for students: mentorship, internship listings, advanced profile search. (Java, Spring Boot, React, MySQL)
• Universal File Viewer — Firefox extension that syntax-highlights JSON, YAML, XML, CSV and TOML in the browser. (JavaScript, WebExtension API)
• 50+ more repos at github.com/w0l1d?tab=repositories

• Spring's HTTP Client Transition: RestTemplate Deprecation and Alternatives
• Implementing Global Logout in Keycloak: A Comprehensive Guide
• Enhancing Log Quality with MDC: A Guide to Better Application Observability
• Log Detective: Turning Digital Breadcrumbs into Superhero Solutions

• Engineering Degree, Software Engineering & Informatics Systems Integration — Faculty of Science and Technology, Mohammedia (2021-2024)
• Professional Bachelor, Development of Information and Communication Systems — Higher School of Technology, Meknes (2020-2021)
• DUT, Software Engineering — Higher School of Technology, Meknes (2018-2020)

• Building Scalable Java Microservices with Spring Boot and Spring Cloud
• Open-Tech for Africa (INJAZ AL-Maghrib & IBM)
• Working in a Digital World: Professional Skills

• Arabic (Native)
• French (Professional)
• English (Professional)

Thanks for stopping by — if something here overlaps with what you're building, let's talk.