I turn serious business problems into working systems.
Tujenge Pamoja.
I am Justine Mahinyila, a solution architect and software consultant in Dar es Salaam. I design the payment, messaging, and campaign infrastructure behind one of Tanzania's major telecom fintechs — and I bring the same engineering to WhatsApp automation, custom products, AI, and corporate training for organizations across East Africa.
Six ways I help organizations build.
Every engagement starts with your problem, not my stack. These are the problems I solve most often.
Solution Architecture
When real money moves through your system, 'mostly works' is not an option.
Learn moreWhatsApp Automation
Your customers are already on WhatsApp. Your sales process should be too.
Learn moreProduct Development
You have the business idea. I turn it into a working product — not a 12-month IT project.
Learn moreAI Strategy
Everyone tells you to 'use AI'. The real question is where it pays for itself in your operation.
Learn moreCorporate Training
via Ufumbuzi Labs
Your biggest technology risk is not the systems. It is how your people use them.
Learn moreFaith & Nonprofit Tech
via Faith Fusion Digital
Ministry deserves serious systems too — at rates a church can actually afford.
Learn moreSelected work.
Infrastructure for a major telecom fintech, a marketplace for Tanzanian artists, and a digital identity platform — built end to end.
Telecom CVM Campaign Engine
Major Tanzanian telecom fintech · In production
A 7-stage Kafka pipeline powering 42+ campaign types for one of Tanzania's major telecom fintechs.
TangazaMax
Own product · Live in testing
A print-on-demand marketplace where Tanzanian artists upload designs and earn from shirts, mugs, bags, pillows, and wall art.
NexCard
Product + client engagements · Live, NFC hardware pilot
A digital business card platform — QR and NFC tap sharing, wallet passes, lead capture, and analytics — with an NFC hardware pilot.
Built for organizations that mean it.
Let's build something serious together.
Tell me what you're building — fintech infrastructure, a WhatsApp channel, a new product, an AI use case, or a training program — and I'll tell you honestly whether and how I can help.