SHEMSU SULTANFull-stack developer / custom systems
Custom systems, designed and built to fit the problem,
Full system, end to end — architecture, backend, integrations, and the unglamorous parts that keep it running in production. No hand-offs, no dilution.
On-premises trial
Not ready to commit? Rent the system for a small fee and run it on-site before you buy.
01 — About
Everything here can be developed as microservice.
FIG. 01 — PORTRAIT
clear scope, working software early, and direct access to the person building it.
Years shipping backend services, internal tools, and integrations for businesses that outgrew spreadsheets and off-the-shelf SaaS — alongside lecturing programming and networking courses at Ambo University, and advising students on system development projects.
MSc, Computer Science — Haramaya University
BSc, Information Technology — Ambo University
02 — Training
Workshops and mentoring for teams and individuals.
System Design Fundamentals
A practical walkthrough of how to plan a custom system before writing code — scope, data flow, and failure points.
1:1 Code & Architecture Review
Bring an existing project — it gets reviewed line by line to identify what to fix, simplify, or rebuild.
Team Onboarding Track
A short, structured program to get a technical team fluent in a new internal system fast.
Security & Vulnerability Testing
Available on-site to test a system's vulnerabilities in real time, with clear, practical recommendations to protect it.
03 — Blog
Notes from the build log.
Why boring technology wins by default
Custom doesn't mean exotic. Most of my systems run on tools that have been stable for a decade — the custom part is how they're put together.
ArchitectureScoping a project in one meeting
A short framework used with new clients to turn a vague problem into a buildable first version within a single call.
ProcessWhat breaks first in internal tools
A look back at three inherited systems, and the pattern in what tends to fail once real users show up.
Lessons04 — Contact