Nairobi, Kenya · UTC+3

Samuel
Uzima.

Full-stack engineer building fintech infrastructure and multitenant SaaS platforms. I architect systems where correctness isn't optional — payment engines, ACID-grade financial backends, and zero-downtime production deployments.

Get in touch → github.com/uzimasam ↗
Available for remote roles · Open to senior engineering positions
01

Selected work

Multitenant SaaS · 2024–Present

VabuOS

A full-featured SaaS operating system for the creative economy — ticketing, commerce, live streaming, VOD, and fan loyalty in one multitenant platform. Built from zero as Lead Architect at GetPayd Technologies, serving 2,000+ creative entities globally.

Engineered a PSP-style payment orchestration layer routing transactions across multiple providers, dynamically selecting based on client profile, currency, and active service. Shipped the 4K live streaming engine solo in 48 hours; scaled immediately to 100+ concurrent broadcasts with zero dropouts.

PHP 8 / Laravel Vue.js 3 Tailwind CSS PostgreSQL Redis Docker Swarm Temporal Capacitor DigitalOcean
2k+
Creative entities on platform
100+
Concurrent 4K streams
48h
Zero to production, streaming engine
0
Stream dropouts at scale
Fintech Infrastructure · 2025–Present

Investment Platform

Owned and rebuilt the full product and infrastructure for a regulated Kenyan investment platform. Redesigned the client experience from ground up — rethinking onboarding, UX flows, and trust signals for a high-stakes financial context.

Architected a financial unitisation engine automating interest allocations with 100% computational accuracy, backed by strict ACID PostgreSQL transaction management. Built high-concurrency infrastructure to sustain full uptime during peak allocation events.

PHP 8 / Swoole Laravel PostgreSQL Redis GCP M-Pesa API Terraform
5k+
Simultaneous users at peak
100%
Uptime during allocation spikes
0
Data loss in GCP migration
ACID
Transaction guarantees, zero race conditions
02

Stack

Backend
PHP 8+ / Laravel 10/11
Go (REST services)
Swoole async PHP
Event-driven architecture
Microservices / SOLID
Frontend
Vue.js 3 (Composition API)
TypeScript / ES6+
Tailwind CSS
HTML5 / CSS3
Capacitor (native mobile)
Data
PostgreSQL / MySQL
Redis
MongoDB
Query optimisation
ACID transactions
Infra & DevOps
Terraform (IaC)
Docker & Docker Swarm
DigitalOcean / GCP / AWS
Linux (multi-VPS/node ops)
GitHub Actions / CI/CD
AI Tooling
Claude Code
Cursor
n8n (agentic workflows)
Temporal (workflow engine)
Domain expertise
Payment orchestration
Fintech / investment systems
Multitenant SaaS
KYC & compliance
Financial unitisation
03

Contact

Let's build something.

Open to senior remote engineering roles. Available for B2B contract engagements — international hiring is no obstacle.

✉ uzimasamuel1@gmail.com LinkedIn ↗ GitHub ↗ Stories ↗