Fullstack Developer
Senior Developer with 7+ years of experience building web and mobile applications — specializing in fintech, secure payments, and React Native.
Hernán David Figueroa
Fullstack Developer
Freelance Available
Core stack
Who am I?
I'm a Senior Developer specializing in React Native, fintech and secure payments, with 7+ years of experience building production mobile and web applications. I built a fintech app from its first user to 500+ daily active users, led a 3-person team building a last-mile logistics platform operating in several Latin American cities, and at Wompi, a Colombian fintech payment gateway, I work on POS terminals (Topwise and Ingenico), Tap to Phone on Android and iOS, L3 card certifications and PCI DSS-compliant security controls.
I work with a complete AI-assisted spec-driven development (SDD) workflow using Claude, Codex and Kiro, both at Wompi and in my own projects, delivering 2–3x faster with 90% test coverage. Based in Bogota, Colombia (GMT-5). I have always worked remotely. Available for freelance and open to new opportunities. Spanish (native) and English (B1).
Bold tags: CV highlights
What I Do
My Work
Cybersecurity Training Platform (Beta)
Gamified enterprise cybersecurity training platform built end-to-end as sole architect and developer. Includes a React Native mobile app, web dashboard, and AI engine. Features OTP-based passwordless auth, role-based content personalization, and real-time progress analytics.
Fintech Mobile App
Mento is a Chilean fintech startup focused on personal loans. I built the mobile app from scratch — The app handles the full loan lifecycle: application, approval flow, disbursement tracking, and repayment management.
Logistics Mobile App
Open Source Contribution
My Book
AI can write the code. You're still responsible for understanding it.
Artificial intelligence can write code in seconds. But do you know if that code deserves to enter your project? A guide to developing software with AI without losing your craft: define problems, specify requirements, delegate to AI, verify results, audit code, write tests, and recognize risks like vibe coding and AI Debt.
Get In Touch