Fernando Pailhe
Senior Mobile Engineer — Buenos Aires, Argentina (UTC-3) · Remote worldwide
Experience
Aug 2025 — Present
React Native Developer
Techint
- Stabilized EQM, a deprecated offline-first React Native app with no test coverage, publishing 3 releases in its first 3 months after a year with no updates.
- Designed a JavaScript→TypeScript migration plan around a 2,000+ test suite built from zero, with >80% coverage.
- Migrated the app's full core (166 files) from JavaScript to TypeScript with AI agents in ~1 month, with zero functional regressions.
- Wrote coding rules and a knowledge base as shared agent context, turning ad-hoc AI use into a consistent, reviewable workflow; added 4 quality gates (lint, format, test, type-check).
- Led the first AI agent shipped inside the product itself: a user-facing assistant for daily activity reporting.
- Earned the client's trust early as primary liaison with cost/benefit-weighted improvements from day one, like a dynamic stepper that cut unnecessary screens from document creation; owned store releases.
React Native TypeScript JavaScript Jest AI agents
Projects: EQM
Apr 2023 — Aug 2025
Full Stack Developer
Sitio Uno · Remote
- Spearheaded El Puma Contigo from scratch: CI workflow on Expo, with AI functionality integrated to improve user interaction.
- Led the re-architecture of Be Soul around Redux and SOLID principles for long-term scalability.
React Native Expo TypeScript Redux
Projects: Be Soul · El Puma Contigo
Jul 2017 — Aug 2025
Filmmaker
Municipalidad de Tres de Febrero
- Led video recording for municipal audiovisual communication — filming, structuring and scripting each piece.
- Helped build and grow the communication team from its inception; the team became recognized as one of the best by peer institutions.
Jun 2020 — Jul 2025
Full Stack Developer
Freelance
- HangApp: took a beta MVP to a production-ready public release, with a full UI/UX redesign and architecture overhaul.
- PassApp: maintained and extended an Android app for 10,000+ active users (Kotlin, MVP architecture).
- Developed Be Soul's mobile app and backend (React Native, TypeScript, NestJS, MongoDB), including OpenAI assistant integration.
- Built a native Android prepaid-card app and migrated it to a multi-platform React Native codebase.
- Integrated Sentry for error monitoring and Jest for automated testing across projects.
React Native Kotlin TypeScript NestJS MongoDB Firebase GCP
Projects: HangApp · PassApp · Machine Stock · Wao · Dalto Ambassadors
Nov 2021 — Mar 2023
Full Stack Developer, Part-Time
My Stadium Golf · Remote
- Maintained and optimized an Android tablet app (Java, MVP architecture) for performance and stability.
- Built student-app features on a hybrid React Native Expo + legacy Laravel + AWS serverless stack.
- Extended a PHP/Laravel REST API with API Gateway, Lambda and DynamoDB; optimized image delivery via CloudFront.
Java React Native Expo PHP/Laravel AWS
Projects: Stadium platform
Jan 2011 — Jan 2020
Photographer & Filmmaker
Freelance
- Planned shoots around available resources and adapted to last-minute changes in the field.
- Managed client needs, schedules and small teams end to end.
Education
Mar 2008 — Sep 2014
Audiovisual Design
Universidad de Buenos Aires
Courses
- 2021
Basics in Kotlin for Android
Google Developer Platform
- 2008
Interdisciplinary Design Workshop
UBA & Universidad Javeriana de Colombia
- 2002
Microsoft Visual Basic
Universidad Tecnológica Nacional