Live
VizaCheck
Immigration Tech • Thelix
AI screening platform that reduced visa application review time from hours to minutes. Processes 10K+ applications monthly with 95% detection accuracy.
Next.jsNode.jsPythonAI/ML+2
Open to Senior Engineering roles
Nigeria
David Sampson
I build software that helps businesses scale
Senior Engineer with 6+ years shipping production systems. From HIPAA-compliant healthcare platforms to AI-powered screening tools to fintech processing 100K+ transactions—I own products from architecture to deployment.
Industries I've Built For
💳Fintech
🏥Healthcare
🌍Immigration Tech
📚EdTech
🛒E-commerce
🤖AI/ML
☁️SaaS
📱Mobile
ReactReact NativeNext.jsTypeScriptNode.jsNestJSPostgreSQLMongoDBRedisAWSDockerOpenAI
Track Record
Shipping production software and growing engineering teams.
0+
Years Shipping Software
0+
Products in Production
0+
Engineers Mentored
0M+
End Users Served
Featured Work
A selection of projects where I led development and made significant technical contributions.
How I Think
Engineering principles I've developed over six years of shipping software. These guide every technical decision I make.
Solve business problems first
Technology is a means, not an end. Every technical decision should trace back to a user need or business outcome.
Simplicity scales
Complex systems fail in complex ways. I optimize for clarity and maintainability over cleverness.
Ship, measure, improve
Perfect is the enemy of shipped. I prefer fast iterations with real feedback over long cycles with assumptions.
Own the outcome
My job isn't done when the code is merged. I stay accountable until the feature is working in production.
Make decisions reversible
When possible, I architect for change. When not possible, I invest heavily in getting the irreversible decisions right.
Reliability is a feature
Users don't see uptime until it's gone. I build systems that fail gracefully and recover automatically.
Working With Me
From founders I've built products for to engineers I've mentored.
“David took VizaCheck from concept to 10K monthly applications. What stood out was how he approached ambiguous AI requirements—he'd ask the right questions, propose solutions, and ship. He operates like an owner, not a contractor.”
TM
Tolulope Michael
CVO at Thelix
Beyond the Code
Engineering is what I do, but it's not all I am. Here's what else matters to me.
Mentorship
Teaching is how I give back. I've mentored 100+ developers, and watching them land their first engineering roles is genuinely rewarding.
Continuous Learning
Currently deep-diving into system design patterns and distributed systems. The field moves fast—staying curious is non-negotiable.
Football
Weekend footballer. It's a good reminder that individual skill matters less than how well the team moves together.
Faith
My faith grounds me. It shapes how I treat people, approach commitments, and maintain perspective during challenging projects.
Building in Africa
I'm invested in growing the African tech ecosystem. The problems here are real, the talent is abundant, and the opportunity is massive.
Recent Writing
Technical articles on full stack development, system design, and engineering best practices.
Currently
Based in: Lagos, Nigeria
Open to: Remote Worldwide
Willing to: Relocate
Currently: Mentoring Engineers
Building: AI-Powered Products
Learning: System Design at Scale
Accepting new projects
Let's Build Something That Matters
I'm most effective on products where engineering decisions directly shape business outcomes. Whether you need a senior engineer, technical advisor, or someone to own a product end-to-end—let's talk.