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YONI.SH

03 // Engineering Experience

Where I've Worked & What I Learned

Real teams, real products, and real constraints. What I worked on, what I took away, and why it actually mattered.

4 Production RolesA2SV Fellowship180+ Pest Tests (HCMS)
Production System • DigitalizationACTIVE

Full-Stack Software Developer

Wawmox Technologies• Addis Ababa, Ethiopia

Oct 2025 — Present

Building clinical workflow software and business operations tools using Laravel, React, Inertia.js, and PostgreSQL.

Worked onArchitected and delivered multi-role clinical platforms with separate portals for triage, consultations, laboratory tests, and billing.
LearnedManaging complex multi-user state machines, normalizing phone numbers for local SMS gateways (+251), and writing 180+ automated Pest tests.
Why it matteredReplaced manual paper binder tracking in local clinics, eliminating lost triage vitals and speeding up patient handoffs between doctors and lab technicians.
Stack:LaravelReactInertia.jsNext.jsPostgreSQLPest PHP
Backend Architecture • Data Modeling

Backend Developer Intern

Zemnay Tech• Ethiopia

Jul 2025 — Sep 2025

Designed relational database schemas and developed backend REST API endpoints using Next.js and PostgreSQL.

Worked onBuilt database schemas, optimized SQL queries, and integrated backend API endpoints for client web platforms.
LearnedHow real-world queries slow down under load, how to properly index relational tables, and how to write clean API contracts.
Why it matteredFixed database bottlenecks early in development, keeping response times low before features shipped to users.
Stack:Next.jsPostgreSQLSQL OptimizationREST APIsAdSense
Algorithmic Fellowship • Competitive Programming

DSA & Problem Solving — Remote Track

A2SV (Africa to Silicon Valley)• Remote

May 2025 — Aug 2025

Intensive competitive programming fellowship focused on advanced data structures, graph theory, and algorithmic complexity.

Worked onDaily problem-solving sessions covering trees, graphs, dynamic programming, and complexity analysis across 100+ LeetCode and Codeforces challenges.
LearnedHow to break down complex problems systematically, analyze memory/time trade-offs, and write bug-free code under tight time constraints.
Why it matteredGave me the foundational computer science discipline to think through edge cases and write efficient code rather than guessing.
Stack:PythonC++Graph TheoryDynamic ProgrammingLeetCodeCodeforces
CRM Engineering • Multinational Production

Software Developer

StartxLabs• India (Remote)

Mar 2025 — May 2025

Contributed to CRM workflow features and developed responsive landing pages for multinational clients using React.

Worked onBuilt customer service interface workflows, resolved production UI bugs, and improved responsive layouts.
LearnedNavigating large shared codebases, participating in code reviews, and debugging production regressions across different browsers.
Why it matteredGained experience collaborating with distributed remote teams where clear communication and defensive coding are essential.
Stack:ReactCRM WorkflowsA/B TestingProduction Debugging
UI/UX Architecture • Design Systems

UI/UX Developer

RDXDelta• Ethiopia

Dec 2023 — Feb 2024

Translated design concepts into reusable UI components and interactive prototypes using Figma and JavaScript.

Worked onCreated component libraries, tokenized spacing/color systems, and built interactive user flows.
LearnedWhere users get confused in multi-step interfaces, how visual hierarchy guides attention, and why accessible contrast matters.
Why it matteredGrounded my development philosophy—I never write backend code without understanding how a real person will experience it on the frontend.
Stack:FigmaDesign TokensJavaScriptComponent SystemsWCAG