# Matias Rios

> Tech Lead & Software Engineer

+5 years of experience building products across 8+ industries. Tech Lead at Mangxo, Co-Founder of Geome7ric.

## Contact

- Location: Bahía Blanca, Buenos Aires, Argentina
- Website: https://matiasjrb.com.ar
- Email: matiasjriosb@gmail.com
- GitHub: https://github.com/MatiasJRB
- LinkedIn: https://www.linkedin.com/in/matiasjriosb/

## About

In 2013, I pursued a degree in computer engineering, and by 2018, I had sold my first software: an inventory app for a local pet shop. Since then, I've being coding for diverse industries, including building, ecommerce, physical retail, healthcare, distribution, port logistics, and corporate transportation.

I build financial technology at [Mango](https://mangxo.com), a startup transforming how construction companies buy materials across Latin America. My work focuses on backend systems that power commercial credit, payment workflows, and a marketplace connecting builders with 200+ distributors. On my own time, I design and ship SaaS products end to end — from database architecture to billing and deployment. Previously, I led a mobile app from beta to app stores at [Nuqlea](https://nuqlea.com) and drove a key integration at [Kalkomey](https://kalkomey.com) that increased subscriptions and revenue.

When I'm not at the computer, I’m usually at the gym, playing soccer at the best [friend's club](https://www.instagram.com/sincontratofc) of my city, or with friends and family. I also manage projects at [Geome7ric](https://geome7ric.com), my software venture.

## Work Experience

### Tech Lead at Mangxo

03-2025 — PRESENT | [https://mangxo.com](https://mangxo.com)

I am responsible for technically and operationally leading the development team, ensuring solutions are scalable, maintainable, and aligned with product strategy. I act as the liaison between business vision and technical execution, working closely with the CTO. My focus includes building with a medium and long-term vision, anticipating the evolution of the product, team, and platform.

- Technical leadership in designing architectures for new features and systems.
- Defining and maintaining technical quality standards (tests, CI/CD, PRs, versioning).
- Coordinating the development team (dailies, sprint planning, PR reviews).
- Onboarding and technical mentoring for new developers.
- Aligning technical implementation with product objectives.
- Administering and maintaining technical infrastructure (development, staging, production).
- Supervising and implementing CI/CD tools and monitoring.
- Communicating progress, risks, and technical decisions to the CTO.
- Designing key components with a focus on scalability and future business evolution.

### Co-Founder at Geome7ric

02-2020 — PRESENT | [https://geome7ric.com](https://geome7ric.com)

Co-founded and run a software venture building products across web, mobile, and AI. Currently focused on shipping SaaS platforms and multi-tenant applications using React Native, Next.js, and Supabase.

- Co-founded Geome7ric, leading product strategy, technical architecture, and client relationships.
- Built and shipped multiple SaaS products end-to-end: AI knowledge assistants, carpooling apps, and multi-tenant platforms.
- Designed and deployed production systems using Next.js, React Native (Expo), Supabase, PostgreSQL, and Stripe.
- Managed full project lifecycles, including budgeting, client relations, project management, and team leadership.
- Implemented CI/CD pipelines, Vercel deployments, and spec-driven development workflows.
- Responsible for client acquisition, requirements gathering, and ensuring successful project delivery.

### Software Engineer at Kalkomey

09-2022 — 12-2024 | [https://kalkomey.com](https://kalkomey.com)

Backend Lead at HuntWise, a leading hunting app, where I implemented backend solutions to enhance system reliability and drive market growth. Collaborated with product, marketing, and development teams to align technical solutions with business goals. Previously managed backend development for Cargill, consistently delivering milestones and strengthening client relationships. Recognized for leadership, strategic planning, and technical contributions with a promotion.

- Led backend development for the HuntWise app, implementing solutions with Node.js, Express, and PostgreSQL to enhance system reliability and support market growth.
- Engineered and maintained robust backend services using Python and Ruby on Rails, contributing to core product features.
- Managed backend development for key client projects like Cargill, consistently delivering milestones and strengthening client relationships.
- Collaborated with product, marketing, and development teams to align technical solutions with business goals, utilizing AWS, Docker, and CI/CD pipelines (GitHub Actions).
- Spearheaded the adoption of Prisma for ORM, improving developer productivity and data access patterns.
- Recognized with a promotion for leadership, strategic planning, and significant technical contributions to the platform.

### Fullstack Developer at Nuqlea

06-2021 — 08-2022 | [https://nuqlea.com](https://nuqlea.com)

Led mobile app development, contributed to platform design using Quasar Framework, Laravel. Transitioned app from beta to production on Apple, Google. Enhanced B2C app, tackled system-wide issues, improved UX/UI. Learned startup agility, meeting deadlines.

- Led full-stack development of a hybrid mobile application using Quasar Framework (Vue.js) and a Laravel backend.
- Successfully transitioned the mobile app from beta to production, managing deployments to Apple App Store and Google Play Store.
- Contributed significantly to platform design and architecture, enhancing features for a B2C application.
- Improved application performance and UX/UI by tackling system-wide issues and refactoring key components.
- Operated effectively in an agile startup environment, consistently meeting tight deadlines and adapting to evolving requirements.
- Utilized MySQL for database management and JavaScript (ES6+) for frontend and backend logic.

## Education

- **Engineer — Computer Engineering** at Universidad Nacional del Sur (2013–2021)

## Projects

### Platform v2 (Mangxo)

**Role:** Tech Lead

Led the full migration of Mangxo's platform from Vue 2 to Next.js. 15 feature modules including clients, purchases, sales, suppliers, reservations, and payment workflows.

**Tech:** Next.js, TypeScript, Supabase

### Cobros (Mangxo)

**Role:** Tech Lead & Architect

Payment reconciliation product for construction material distributors. STP integration for automated transfers, SAT tax validation, CLABE account management, and full audit trail.

**Tech:** Next.js, Express, Prisma, STP API

### Docs & Data (Mangxo)

**Role:** Creator & Developer

Internal knowledge base with AI-powered search (Docs) paired with a Slack bot that answers team questions using OpenAI function calling to query production databases (Data).

**Tech:** Astro, Starlight, Express, OpenAI, Slack API, MySQL

### Transactions (Mangxo)

**Role:** Developer

Microservice to automate payment processing through STP (Mexican banking network). Handles webhooks, transaction status tracking, and event-driven notifications with Sentry monitoring.

**Tech:** Express, Prisma, STP API, Sentry

### Eagle (Geome7ric)

**Role:** Full Stack Developer

Field service management platform. Technician scheduling, work order tracking, photo evidence capture, and real-time dashboards for operations teams.

**Tech:** NestJS, Vue, Quasar, Capacitor, Firebase

### Lemur (Geome7ric)

**Role:** Full Stack Developer

Corporate transport management system with real-time GPS tracking, route optimization, driver assignment, and live map visualization using Socket.io.

**Tech:** NestJS, Vue, Quasar, Google Maps, Socket.io

### Badger (Geome7ric)

**Role:** Full Stack Developer

Industrial inventory management for a manufacturing company. Turborepo monorepo with web dashboard and mobile app for warehouse floor operations.

**Tech:** Turborepo, Next.js, Expo, Supabase

### Wolf (Geome7ric)

**Role:** Full Stack Developer

Complete POS and commerce platform with sales, orders, cash management, analytics, team management, and Tienda Nube e-commerce sync.

**Tech:** Laravel, Vue, Quasar, Tienda Nube API

### Asiento Libre

**Role:** Creator & Developer

Carpooling app for Argentina (BlaBlaCar-style). Search, publish trips, real-time booking, ratings, and payment integration across iOS, Android, and web.

**Tech:** React Native, Expo, Supabase, Gluestack UI

### Ferret

**Role:** Creator & Developer

AI-powered knowledge assistant SaaS. RAG pipeline, Slack integration, multi-tenant billing, and self-serve onboarding for teams.

**Tech:** Next.js, Supabase, OpenAI, Stripe, Slack API

### Turnero

**Role:** Creator & Developer

Multi-tenant booking SaaS for independent professionals. Public booking pages, Google Calendar sync, WhatsApp reminders, and self-service management.

**Tech:** Next.js, Supabase, Google Calendar API, Twilio

## Languages

- English: Professional working proficiency

## Key Technologies

TypeScript, JavaScript, React, Next.js, React Native (Expo), Node.js, Python, Ruby on Rails, PostgreSQL, Supabase, AWS, Docker, Vercel, Stripe, CI/CD (GitHub Actions), Prisma, Vue.js, Laravel, MySQL