Henry Okonkwo

Senior Software Engineer

Software engineer based in Berlin, 7 years shipping production software across full stack web, native apps, AI/ML, fintech, data privacy and compliance. Interested in working on project ideas around AI (machine learning, LLMs) and automation.

Full StackFrontendArtificial Intelligence

Things I've built

Docgate

Docgate

Live

AI Document Understanding for European Residents

Upload any official document - government letters, tax notices, contracts - and get a clear explanation in your language with deadlines, action items, and reply drafts. Supports 8 countries and 21 languages.

Next.jsPostgreSQLClaude APIMCPStripePDF/DOCX Parsing
Sprevia

Sprevia

Live

AI-Powered Language Learning Platform

Adaptive German language learning with AI speaking practice, spaced repetition, TELC exam prep, and structured daily sessions. Tracks progress across all language skills.

Next.jsSupabaseClaude APIWeb Speech APIStripeSpaced Repetition
WalletGate

WalletGate

Live

EUDI Wallet Verification API for Developers

A developer-first API that lets any app integrate EU Digital Identity Wallet verification. Supports age checks, identity verification, and residency - all compliant with eIDAS 2.0 and OpenID4VP.

TypeScriptExpressPostgreSQLRedisOpenID4VPJOSE/JWTStripeResend
Gatewise

Gatewise

In Dev

Shopify Age Verification & Compliance Plugin

A Shopify app that enforces age verification at checkout for regulated products - alcohol, CBD, vape, gaming. Produces audit-ready compliance evidence and is built to be EUDI-ready.

RemixShopify FunctionsPolarisGraphQLApp Bridge

Recent posts

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Certifications

What people say

"The successful build, customer success and subsequent acquisition of Kormoon would not have been possible without the diligence, care and skill of Henry. His world class skills would be a vital asset to the technology scene."

"Henry is a dedicated, skilled, and innovative professional. He led the modernization of our frontend - upgrading from Vue2 to Vue3, migrating to Pinia, and raising test coverage to 56%. I wholeheartedly recommend him."

"Henry took on a team leadership role quickly after starting, becoming a trusted member of the team. He was always communicative and proactive. I would jump at the chance to bring him onto any software team."

"Henry contributed to several mobile and web applications for global clients. He initiated and grew our community of engineers in Rwanda and led technology engagements with speakers from all over the globe."

"I worked with Henry in a mentor-mentee capacity where we collaborated on different projects. He excelled at both tasks by delivering high quality, working code in a timely manner and under specific time constraints. He was also a very effective communicator. I would strongly and without hesitation recommend Henry to any company considering him."

"I personally mentored Henry to coding. He came onboard with absolutely no knowledge of computer science, but since then has acquired a lot of valuable skills. I have been mentoring students on web development since 2013, but Henry is one of the most outstanding students I have seen over time because he came from an entirely different background of Banking/Accounting, and persisted to shifting it through."

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