Five things I get asked for most — from a first Flutter build to a sync layer that survives a week offline.
Product-grade web apps end to end: schema, API, auth, row-level security and a UI that holds up on a cheap tablet.
Android apps built to Play policy, shipped signed and minified — including one that reads mobile-money notifications with no network permission at all.
Systems that cite their sources and refuse when the documents don’t cover the question — measured against a human-reviewed golden set, not a vibe check.
Never sync quantities, sync movements. Two tills, both offline, both selling the last unit — and the arithmetic still comes out right.
Automated scanning with a dashboard your team will actually read — findings tracked, categorised and reported.
Public Repos
8
A full-stack engineer in Addis Ababa working across web, Android and AI retrieval. Most of my work targets one constraint: bad connectivity. Offline-first ledgers, point-of-sale that keeps selling through a blackout, and retrieval systems that cite their sources or say nothing.
Addis Ababa, Ethiopia
95%
Next.js
92%
React
90%
TypeScript
88%
Flutter
85%
Kotlin
87%
PostgreSQL
Haramaya University
BSc in Computer Science
Final Year Project
Web Vulnerability Scanner
University CTF
1st place, HU × INSA
Cyber Security Club
Former Head & Chairperson, Haramaya University
Leyo
Focal Person, Data Contribution
Independent
Full-Stack Engineer
Reads mobile-money payment notifications, parses them into a ledger and tracks who owes the shop. No internet permission, no account. When no rule matches a message, the shopkeeper teaches one by highlighting the amount.
A till that keeps selling when the internet and the power go out, then reconciles cleanly. Amharic-first, ETB pricing, 80mm thermal receipts. Stock movements sync, never quantities — so two offline tablets never overwrite each other.
Ask a question across a PDF corpus and get a streamed answer where every claim carries an inline citation back to its source chunk — and a plain refusal when the documents don’t cover it.
Automated scanning built on OWASP ZAP, Nuclei and Nikto behind one dashboard: JWT auth, real-time results, and vulnerability tracking with severity and history. Fully Dockerised.
A Flutter app delivering live university news over the WordPress REST API: featured carousel, full article rendering, reactions, keyword-highlighted search, YouTube playback and persistent dark mode.
A decentralised token dashboard on the Internet Computer with Internet Identity auth: check balance, claim tokens once per principal, transfer to another principal.
An Android app that lets people exchange messages and photos with no network connection at all — built for blackouts, dead zones and shutdowns.
First at university level in the capture-the-flag competition run by Haramaya University in collaboration with INSA.
Served as head and chairperson of the Cyber Security Club at Haramaya University, running training and competition prep for members.
Led data-contribution coordination at Leyo for a year, owning quality and throughput for the contributor pipeline.
$15 / Hour
$1,200 / Month
$3,200 / Qtr.
Addis Ababa,
Ethiopia
Email : alphaguyasa@gmail.com
LeetCode : alphaguyasa123CS
Monday – Friday : 09:00 – 20:00
Saturday – Sunday : 11:00 – 18:00
Melkias Teshome
Full Stack Developer
5.0out of 5
Alpha thinks about the failure case first. On the offline-first work he had the sync path designed before a line of UI existed, and that is why it never lost a sale in testing.
Abdi Fekeda
Full Stack Developer
5.0out of 5
We built HU News together. He took the hardest screen, documented every decision, and reviewed the rest of our code without being asked. An easy person to ship with.
Why two offline tills that both sell the last case of water can only stay correct if you append deltas instead of writing totals.
Play won’t grant restricted SMS permissions to a finance app. What a notification listener buys you, and what it costs.
Three of four retrieval experiments did nothing. The most useful finding came from the breakdown nobody reads.
Yes. I take on hourly, monthly and quarterly engagements, remote or in Addis Ababa.
Systems that have to work in poor connectivity: offline-first point of sale, mobile-money ledgers, Android apps built to Play policy, and retrieval systems that cite their sources. Plus web security scanning.
Next.js and TypeScript on the web, Kotlin with Jetpack Compose and Flutter on mobile, Postgres and Supabase for data, Docker for anything that has to be reproducible.
Every project here links to its repository, and most carry a written architecture document explaining the decisions and their trade-offs.
Tests on the parts where a bug costs money — 375 unit tests on Mezgeb, a multi-device sync suite on Suq, and an eval harness with a validated judge on DocSearch.
Email me at alphaguyasa@gmail.com and I’ll send it over, or reach me on LinkedIn.
