Hi, I'm
Gregory Temwa
Award-winning Software Engineer in Nairobi with 3+ years of experience building production SaaS platforms, AI-powered products, and offline-first apps with TypeScript, React, Python, and Postgres.
Who I am
About me
I'm Gregory Temwa, a motivated Software Engineering student at United States International University (USIU) with 3+ years of working experience. I'm an award-winning participant in multiple hackathons with a strong foundation in software development, artificial intelligence, machine learning, and web technologies.
Currently based in Nairobi, Kenya, I lead technical strategy as Chief Software Engineer at WebTech Solutions Limited, building production SaaS platforms, AI-powered tools, and developer infrastructure end to end. I also contribute to open source, with merged changes in Canonical's observability stack and open pull requests to Google's sbsim.
Languages
Frameworks & tools
Systems & infrastructure
Career
Experience
Chief Software Engineer
WebTech Solutions Limited, Nairobi, KenyaFeb 2026 – Present
Lead technical strategy and architecture across client projects, owning CI/CD pipelines, code quality standards, and mentoring engineers while delivering production SaaS platforms and AI-powered tools.
Open Source Developer
Independent — Canonical, RocketMQ-Rust and othersJun 2025 – Present
Contribute Python fixes and features to Canonical's Observability Stack — merged changes to tempo-operators and alertmanager-k8s-operator, with open pull requests to cos-alerter and hardware-api — plus a merged change to RocketMQ-Rust and open pull requests to Google's sbsim, working through code review with upstream maintainers.
Full Stack Software Developer
WebTech Solutions Limited, Nairobi, KenyaDec 2024 – Jan 2026
Built client-facing applications with React, Next.js, TypeScript, and Node.js, designing databases and REST APIs end-to-end and shipping production deployments on Vercel and Railway.
Selected work
Projects
An offline-first point of sale for a Kenyan liquor store — an Android app that keeps selling with no connection and syncs every sale exactly once, plus an owner dashboard for profit, stock, till shortages, debts and supplier balances.
No hosted demo — explore the source on GitHub
A practice management system for a Kenyan law firm — matters, court diary, trust accounting, billing, documents, and a client portal — with the domain modelled from actual Kenyan statute and its architecture enforced by the linter.
An 11-module personal finance suite — transactions, accounts, budgets, bills, savings goals, debts, loans, assets, wishlist, and habits — with an analytics dashboard visualizing income and expenses.
AI-powered mental health chatbot built on a Mistral-based model through OpenRouter, with mood tracking, journaling, and mini-games. NextAuth authentication with NeonDB serverless Postgres and Prisma ORM.
Loan management and investment prototype built with Next.js and Supabase for authentication and secure financial interactions.
Writing
From the blog
A rule enforced in one place is not enforced
One rule about client money ended up in four places — the domain, a database trigger, a repository translation, and the ordering of two writes. Each answers a different question, and removing any one leaves a system that passes its tests and is wrong on a busy afternoon.
The failures that cost the most are the silent ones
Two chart bars drew in nothing on a page whose figures had already been checked in a browser. A sign-in refusal rendered as ordinary body text. Neither threw, neither logged, and neither was findable by looking — so I started parsing the stylesheet in a test.
Now
What I'm working on
Currently building
Liquor Store POS
An offline-first point of sale for a Kenyan liquor store — an Android app that keeps selling with no connection and syncs every sale exactly once, plus an owner dashboard for profit, stock, till shortages, debts and supplier balances.
Read the case studyLatest commit
fix(content): Safari OS runs nine scheduled jobs
Myportifolio ·
Recently active
- MyportifolioTypeScript ·
- Flori-Core-Enterprise-OSTypeScript ·
- lightweight-mobile-POSTypeScript ·
Get in touch
Let's build something amazing
Based in Nairobi, Kenya. Tell me about your project, and I'll get back to you soon!