David Sampson Udochukwu
Senior Full Stack & Mobile Engineer
Summary
I build software that solves business problems. 6+ years shipping production systems—from AI-powered immigration screening to HIPAA-compliant telemedicine to fintech processing 100K+ monthly transactions. I've been the first engineer at startups, led small teams, and mentored 100+ developers. Looking for senior roles where engineering decisions directly impact product outcomes.
Experience
Full Stack Engineer
Jan 2026 - Aug 2026Thelix • San Francisco, CA • Remote
- Built VizaCheck from scratch—an AI screening platform that reduced visa application review time from hours to minutes, now processing 10K+ applications monthly
- Designed and shipped VeriPass, achieving 98% accuracy in O-1A/EB-1A eligibility predictions by modeling complex immigration law into scoring algorithms
- Architected AI pipelines that analyze social media content across languages while maintaining GDPR compliance
Full Stack Developer
Jan 2025 - Dec 2025CareLoop • Austin, TX • Remote
- Built Carenavio end-to-end—a telemedicine platform that passed HIPAA audit on first attempt and now handles 5K+ monthly consultations
- Designed secure messaging architecture with end-to-end encryption for sensitive patient-doctor communications
- Integrated prescription fulfillment workflow connecting Stripe billing, pharmacy systems, and Shippo delivery tracking
Lead Developer
Jan 2024 - PresentAltariaHub • Lagos, Nigeria • Hybrid
- Led 4 engineers through architecture, code review, and technical decisions while shipping a marketplace now processing $500K+ monthly GMV
- Designed multi-tenant architecture supporting 200+ vendors with isolated data, custom domains, and automated commission payouts
- Built real-time infrastructure (Socket.io + Redis) handling 10K concurrent users for live order tracking and notifications
Full Stack Developer
Jan 2022 - Dec 2024Multiple Startups • Remote • Remote
- Built OrderPay from zero to 100K+ monthly transactions—a fintech platform that became the primary revenue driver for the company
- Shipped MedFind, an AI-powered medication search connecting patients with pharmacies across Nigeria
- Co-founded CareerEx: designed curriculum, built the platform, and personally mentored 100+ developers into engineering careers
Frontend Developer → Full Stack Developer
Jan 2020 - Jan 2022Freelance & Training • Lagos, Nigeria • Hybrid
- Shipped 50+ client projects—learned to scope work, manage expectations, and deliver under real constraints
- Began mentoring developers early, teaching 50+ through workshops and 1-on-1 sessions
- Transitioned from WordPress/PHP to modern JavaScript stack by shipping progressively complex projects
Technical Skills
Frontend
React, Next.js, TypeScript, JavaScript, Tailwind CSS, Redux, Framer Motion
Mobile
React Native, Expo, iOS, Android, Offline-First, Push Notifications
Backend
Node.js, NestJS, Express.js, Python, REST APIs, GraphQL, WebSockets
Cloud & DevOps
AWS, Docker, Kubernetes, CI/CD, GitHub Actions, Vercel, Linux
Database
PostgreSQL, MongoDB, Redis, Firebase, Prisma, Mongoose
AI & Integration
OpenAI API, LangChain, RAG Systems, AI Agents, Vector DBs, Python ML
Education
Bachelor of Science in Computer Science
University of Nigeria • Graduated 2019
Key Projects
VizaCheck
AI-powered immigration screening platform processing 10K+ applications monthly
Carenavio
HIPAA-compliant telemedicine platform with 5K+ monthly consultations
AltariaHub Platform
Multi-vendor e-commerce marketplace handling $500K+ monthly GMV
CareerEx
EdTech platform that has trained 100+ developers with 80% placement rate
Two resume versions available: International (for global remote roles) and Nigeria (for local opportunities)