About
Senior Mobile Engineer specializing in fintech and secure payments, with 9+ years building
production React Native apps from zero to scale. I've shipped a logistics platform used across
multiple Latin American cities, grown a fintech mobile app from its first user to 500+ daily active
clients,
and implemented PCI DSS-compliant security layers — SSL Pinning, integrity validation,
and secure AWS Lambda architectures — at one of Colombia's leading payment gateways.
I care deeply about clean architecture, security-first engineering, and writing code that doesn't become
someone else's problem six months later.
Experience
- Implemented SSL Pinning, certificate transparency validation and runtime integrity
checks, hardening the mobile app against MITM attacks and tampering.
- Built and secured AWS Lambda functions following PCI DSS
compliance requirements, ensuring sensitive payment data never touches unvalidated surfaces.
- Integrated the mobile client with Wompi's payment infrastructure using encrypted communication layers
and token-based auth flows.
- Participated in architecture reviews and deployment pipelines for production-critical payment features.
React Native
TypeScript
NestJS
AWS Lambda
Jest
SSL Pinning
PCI DSS
Nov 2025 — Present
~4 months
- Built the React Native app from scratch, taking it from initial architecture to 500+ daily active users in production.
- Owned the full deployment pipeline — from CI/CD configuration to App Store and Google
Play releases — ensuring zero-downtime delivery cycles.
- Implemented mobile security measures including secure storage, token rotation and
communication encryption to protect sensitive financial data.
- Led architectural decisions across the mobile layer, balancing product velocity with long-term
maintainability.
React Native
TypeScript
Expo
NodeJS
CI/CD
App Store
Google Play
Sep 2023 — Nov 2025
2 yrs 3 mos
- Designed and built MetroDelivery — a last-mile logistics mobile platform — from zero,
covering driver tracking, route assignment, delivery confirmation and real-time status updates.
- Led a mobile engineering team: architecture decisions, code reviews, development standards and feature
planning across multiple delivery cycles.
- Defined the app's data flow and offline-first strategy to support drivers in low-connectivity zones
across Latin America.
React Native
TypeScript
React
REST APIs
Maps SDK
Offline-first
Jan 2022 — Aug 2024
2 yrs 8 mos
- Designed and implemented RESTful API integrations supporting both mobile and web applications.
- Migrated and optimized web-based flows into performant React Native screens, improving load times and UX
consistency.
React Native
React
Redux-Saga
REST APIs
Oct 2022 — Sep 2023
12 months
- Built RESTful APIs and high-performance web applications using Node.js, Express and Angular 2+.
- Improved application speed, security and reliability through continuous profiling and performance
tuning.
React Native
React
Angular 2+
Express
NodeJS
PostgreSQL
Dec 2018 — Feb 2022
3 yrs 3 mos
- Managed hardware and software inventory and provided technical support for internal systems.
- Performed preventive and corrective maintenance, developed user documentation and operational
guidelines.
IT Support
Hardware
Technical Documentation
Dec 2014 — May 2016
1 yr 6 mos
Tech Stack
Mobile
React Native
TypeScript
Expo
Redux
Deep Linking
Kottlin Multiplatform
Backend
NestJS
PostgreSQL
AWS Lambda
Express
NodeJS
REST APIs
Security
SSL Pinning
PCI DSS
OWASP Mobile
Secure Storage
Cert. Validation
DevOps & Delivery
CI/CD
App Store Connect
Google Play
AWS
Frontend
React
Angular 2+
Next.js
Practices
Clean Architecture
SOLID
TDD
Secure SDLC
Scrum
Personal Projects
- Production-grade AI workflow orchestrator for software-driven development — designed to
automate and coordinate multi-step AI agent pipelines in real dev environments.
- Built for developers who need structured, repeatable AI-assisted workflows beyond simple prompt chaining
—
published and distributed via Gumroad.
TypeScript
AI Orchestration
SDD
Workflow Automation
- Gamified enterprise cybersecurity training platform — mobile app (React Native) + web
dashboard + AI engine, built end-to-end as sole architect and developer.
- Implemented OTP-based passwordless auth, role-based content personalization
(administrative, technical, managerial) and real-time progress analytics for enterprise clients.
- Integrated AI-powered contextual feedback and automatic certificate generation after
each training module, targeting 80% engagement improvement vs traditional
formats.
- Architected for regulatory compliance use cases — aligned with ISO 27001, COBIT and OWASP training
frameworks.
React Native
TypeScript
NestJS
AI Integration
Gamification
- Contributed to Foundry VTT — a self-hosted virtual tabletop platform with 200+
supported game systems and a global community of thousands of players and developers.
- Developed and published modules/plugins and a custom game system on the official
Foundry marketplace, extending the platform's core functionality using its JavaScript API.
TypeScript
Open Source
Plugin Architecture
Game Systems
Web APIs
Education
In progress · Propedeutic cycles
Technical
›
Technologist
›
Engineering
Certifications
Certified in Cybersecurity (CC)
(ISC)² · Nov 2022 Security
Secure Software Development
Udemy · Oct 2022 Security
SOLID Principles & Clean Code
Udemy · Oct 2022 Architecture
Scrum Fundamentals Certified (SFC)
SCRUMstudy · Nov 2022 Agile
EF SET English Certificate
EF SET · Dec 2021 Language