I'm a Staff / Senior Frontend Engineer and former CTO with 10+ years building large-scale web platforms in FinTech. Currently based in Santander, Spain 🇪🇸, working remotely as a Senior Frontend Engineer at ICEO, architecting a greenfield European neobank from scratch.
I have a PhD in Computer Science and my passion is frontend architecture — building scalable, well-tested React/Next.js applications that ship fast and hold up at scale.
- 🔭 Currently building: a greenfield European neobank frontend (React, Next.js, TypeScript, TanStack Query)
- 🛠 Open source: maintainer of nextmap and @icydotdev/runny on npm
- 🌱 Side project: maintenance.dev — a SaaS product I designed, built, and launched solo in 2025
- 📫 Reach me: hganavak@gmail.com or LinkedIn
- 🔧 maintenance.dev — Full-stack SaaS product. Next.js, TypeScript, Supabase, Express.js, WebSockets. Solo-built and launched in 2025.
- 🗺 nextmap — CLI tool that visualises Next.js application routes as an interactive dependency graph.
- ⚡ @icydotdev/runny — Runtime developer tooling utility for workflow automation in modern JS applications.
- 🏗 Savory — High-performance marketing site for one of NZ's top-10 construction companies. Next.js, GSAP, Sanity CMS. Delivered solo in 3 weeks.
- 🏌️ Arrowtown Golf — Next.js site for one of NZ's most iconic golf courses. 30,000+ monthly visitors.
- 🏦 Milford Asset Management — Led frontend delivery across investor portal, React Native mobile app, and Azure infrastructure for Australasia's largest investment firm ($17B NZD AUM).
Academic research focused on VR in education — 1,000+ citations. View Google Scholar profile →