Senior Software Engineer Who Leads

I build scalable products, ship AI-powered systems, and help teams do their best work.

15+ years of full-stack engineering and technical leadership. Currently building AI-native tools at Fullsend Technology.

Matthew Montañez

Trusted by teams at

Fullsend TechnologyJoymodeAllupAkin Mental HealthIndy Cinema GroupMonkey TapsSociety6

What I Do

I've spent my career building products from the ground up and leading teams that ship reliably. Whether you need a technical co-founder for your next venture, a senior engineer to strengthen your team, or an experienced hand to modernize your stack, I can help.

AI & Automation

I build AI-powered products that go beyond chat interfaces. At Fullsend, I designed agentic workflows using OpenAI's Agent SDK and MCP integrations that generate, critique, and publish marketing content end to end. I've worked with RAG pipelines, NLP, reasoning models, and real-time streaming architectures.

Full-Stack Product Development

I build across the entire stack: Python, Django, Flask, Node.js, React, Vue, and iOS with Swift. I've shipped ecommerce platforms, learning management systems, operations tools, and mobile apps used by millions. I'm comfortable going from a blank repo to production.

Technical Leadership

I've managed teams of eight-plus engineers, introduced CI/CD and observability practices, and created structure where there was none, without slowing teams down. I lead because that's where I can make the most impact: building things and helping others grow.

Platform & Infrastructure

I've designed and operated AWS-based infrastructure serving millions of requests per minute across multiple regions. I've built distributed microservice architectures, automated deployments, and set up monitoring that gives teams real confidence in what they're shipping.

Experience

2025–Present

Fullsend Technology

Co-Founder & CTO

Designed and shipped AI content automation workflows for small businesses

2023–2024

INDY Cinema Group

Head of Engineering

Led 8-engineer team scaling a platform across 5 countries and hundreds of cinemas

2021–2023

Akin Mental Health

Co-Founder & CTO

Built an edtech platform from zero to acquisition by Doro Mind

2020–2021

Monkey Taps

iOS & Backend Developer

Launched first iOS widget, hit #1 in the US App Store, millions of downloads

2018–2020

Joymode

Growth Engineering Manager

Promoted from IC to engineering + product manager in 7 months

2015–2018

Society6

Platform Engineering Manager

Led data and API teams building high-throughput ecommerce microservices

2014–2015

Livestrong.com

iOS & Full-Stack Developer

Full-stack web and iOS development with PHP, Swift, and Objective-C

2013–2014

J. Hilburn

Web Developer

Co-architected a RESTful API for direct-marketing sales tools

2011–2013

PriceGrabber

Web Developer

Built ecommerce features and led PG Labs creative programming group

Education: B.S. Computer Science, California State University, Los Angeles

About Me

I'm a software engineer based in Los Angeles. I've been building things on the internet for over 15 years, from small startups to scaled platforms serving millions of users.

What drives me is pretty simple: I love building things that help people. The moment a user's face lights up because they can do something they never thought possible? That's what keeps me going.

I believe you create more value when you keep things simple. More features don't equal more value. I'd rather focus on the core problem and solve it well than build something bloated that nobody fully uses.

When I'm not building software, I'm spending time with my wife, our son, and our chocolate Labrador. I also enjoy weightlifting, yoga, reading, strumming the guitar, and hiking around LA.

Let's Work Together

Whether you're looking for a technical partner for a new project, need help scaling your engineering team, or want to bring AI into your product, I'd love to hear from you. I'll meet you where you're at.