Matias Wettstein — Tech Lead & Full Stack Engineer

1.1 Highlights

8+ years building and shipping production software
Leads a cross-functional team of eight — five engineers, two QA, one UX1
Modernizes legacy systems into modular microservice architectures
Owns the full lifecycle: architecture, implementation, CI/CD, production delivery
Node.js · NestJS · React · Next.js · React Native · PostgreSQL · Docker · AWS
Four years teaching programming paradigms at university level2

1.2 Summary

Full stack engineer based in Santa Fe, Argentina. Currently Tech Leader at Diveria, responsible for the full software lifecycle from architectural design through production delivery.

Current work centers on moving legacy systems onto modular, service-based architectures: refactoring and query optimization for performance, Docker containerization and CI/CD pipelines for delivery reliability.

Leads a cross-functional team of eight spanning engineering, QA and design. Four years as a university teaching assistant in programming paradigms.

2.0 Experience

Tech Leader Senior Full Stack Developer

Diveria

Nov 2020 – Present

Santa Fe, ArgentinaHybridFull-time5 yr 10 mo

Leads a cross-functional team of eight: five engineers, two QA analysts, one UX designer
Designed and implemented modular microservice architectures, replacing legacy monolithic systems
Built CI/CD pipelines and Docker containerization, reducing deployment time and production errors
Improved system performance through refactoring and database query optimization
Designed and built a vehicle-tracking system with automated notifications using Node.js, Express and Socket.IO
Mentors developers on code review and Clean Architecture; delivers React Native, Next.js and Remix applications across projects

Stack Node.js · NestJS · Express · React · Next.js · Remix · React Native · PostgreSQL · Docker · AWS · Socket.IO

Teaching Assistant, Programming Paradigms

UTN — Facultad Regional Santa Fe

Nov 2020 – Mar 2025

Santa Fe, ArgentinaOn-site4 yr 5 mo

Supported course delivery across object-oriented, functional and logic programming paradigms
Authored programming exercises and teaching material; graded practical coursework
Mentored students through design and implementation problems

Web Developer

Freelance

Mar 2017 – Jul 20195

Rosario, ArgentinaRemote2 yr 5 mo

Built custom websites and landing pages for clients across sectors
Integrated third-party REST APIs; handled functional analysis and performance optimization
Managed hosting, deployment and basic SEO

Stack HTML · CSS · JavaScript · REST APIs

3.0 Technical skills

Domain	Primary	Also used
Languages	JavaScript, TypeScript, SQL	Java, C#, Ruby
Backend	Node.js, NestJS, Express	Ruby on Rails
Frontend	React, Next.js	Remix, HTML, CSS
Mobile	React Native	Expo
Data	PostgreSQL, Prisma	Firebase
Infrastructure	Docker, AWS, CI/CD	Azure
Architecture	Microservices, Clean Architecture	Socket.IO, realtime systems

4.0 Education & training

Ingeniería en Sistemas de Información UTN, Facultad Regional Santa Fe · 2017 – present · three subjects remaining
Professional training — 400+ hours Udemy and other platforms: React Native, Next.js, Ruby on Rails, Docker, AWS3

5.0 Personal projects4

SUMHa EsperanzaMunicipal commercial-licensing and GIS platform · NestJS, Prisma, PostgreSQL, Next.js
InfoSecAPI and web security education platform · Next.js, TypeScript, Tailwind
Talking TimeMulti-language conversation application · React Native, Expo
Agente Mundial 2026Conversational AI agent · LangGraph, LangChain, ChromaDB

6.0 Notes

Team composition as of August 2026: five engineers, two QA analysts, one UX designer, 2.0. ↩
Teaching assistantship concluded March 2025, 2.0. ↩
Course certificates are listed on the LinkedIn profile linked in the header, 4.0. ↩
Personal work. Projects delivered at Diveria are covered by NDA and are not listed. Full detail at matiaswettstein.com, linked in the header, 5.0. ↩
July 2019 – November 2020: full-time university study, 4.0. ↩