I Turn Complex Ideas Into Scalable Digital Products with Real Business Impact
Nearly a decade of experience designing and shipping production-grade fintech, healthcare, government, and enterprise systems that work under real operational conditions.
What I Do
Product & Systems Architecture
I design scalable, reliable systems that align technology with real business and operational needs.
Technical Strategy & Backend Engineering
I architect APIs, background jobs, and data pipelines that perform under real-world load.
Web & Mobile Product Development
I build production-grade web platforms and Flutter mobile applications used by real customers.
Engineering Leadership & Consulting
I help teams make the right technical decisions early — and avoid costly mistakes later.
Selected Work & Impact
TimeTally — HR Management System
Problem: Organizations needed to replace manual, time-consuming employee performance assessments with a system that provided real-time insights and transparency.
Constraint: Needed to integrate with existing HR workflows without disrupting daily operations.
Role: Product & System Architect
Key Decisions: Designed a microservices architecture to enable independent scaling and faster iteration. Built a real-time data pipeline to surface actionable performance metrics for HR decision-making.
Outcome: Replaced manual assessment processes entirely and delivered real-time reporting capabilities that significantly improved HR team efficiency.
Ecadif POS — Multi-Branch POS System
Problem: Fragmented inventory tracking and delayed financial reporting across multiple retail outlets.
Constraint: Required real-time synchronization across 12 outlets and 2 warehouses with zero tolerance for data inconsistencies.
Role: Product & Systems Architect
Key Decisions: Designed an event-driven architecture to ensure real-time synchronization across all branches without data conflicts. Implemented comprehensive audit trails and centralized reporting to provide full financial transparency across operations.
Outcome: Improved operational efficiency by over 70% and enabled real-time financial transparency across 12 outlets and 2 warehouses.
Laterpayy — Fintech & BNPL Platform
Problem: The platform needed to handle high transaction volumes, manage lending risk, and scale with growing user base while maintaining reliability.
Constraint: Required high availability during peak transaction periods with zero tolerance for data loss.
Role: Product & Systems Architect / Engineering Lead
Key Decisions: Architected an event-driven transaction processing system to handle high-volume transactions with guaranteed consistency. Designed microservices for lending and risk assessment to enable independent scaling and maintain regulatory compliance.
Outcome: Improved transaction efficiency significantly, supported rapid revenue growth, and maintained 99.9% uptime during peak loads.
Pharst Care — Digital Healthcare Platform
Problem: Access to quality healthcare was fragmented and inefficient, with patients facing delays, limited access to doctors, and disconnected services across consultations, labs, and pharmacies.
Constraint: The platform had to operate reliably under healthcare data sensitivity requirements, real-world operational complexity, and continuous service availability expectations.
Role: Product & Systems Architect / Engineering Lead
Key Decisions: Designed a modular system architecture separating consultations, labs, pharmacy, payments, and logistics to allow independent scaling. Built secure, scalable APIs to support asynchronous workflows for lab processing, prescription fulfillment, and follow-ups.
Outcome: Launched and operated a production digital health platform supporting real consultations, diagnostics, and medication delivery. The system scaled to serve thousands of users while maintaining reliability, security, and operational continuity.
How I Think About Building Products
- • Design for Scale, Not Demos — I build systems meant to survive real usage, not just presentations.
- • Clarity Over Cleverness — Simple, maintainable systems outperform complex ones over time.
- • Speed with Intentional Trade-offs — Fast delivery matters — but not at the expense of long-term cost.
- • Build for Teams, Not Just Code — Systems should be easy to operate, extend, and hand over.
Who I Partner With
- • Founders building serious, long-term products
- • Enterprises modernizing critical systems
- • Public-sector teams delivering citizen-facing platforms
If you value clarity, execution, and long-term thinking, we'll work well together.
What Clients Say
"Theophilus delivered exactly what we needed—a production-grade system that our team can actually maintain and scale."
Louis Agyemang
CEO, Laterpayy
"Working with Theophilus transformed our operations. The system he built handles real-world complexity without breaking."
Josue Adimado
CEO, Ecadif
"Theophilus thinks like a partner, not just a contractor. He understands both technology and business outcomes."
Nana Boateng
CEO, Sashafrique
"We needed someone who could build systems that work under real operational pressure. Theophilus delivered."
Chassidy Keys
CEO, Keynect Global
Serious Product Conversations Only
If you're building a real product and need a partner who understands both technology and execution, let's talk.