Control Flow TechnologyWe Build What Matters.
Your competitors are shipping faster than you think. We help ambitious teams close the gap with senior-level engineering that delivers in weeks, not quarters.
No slide decks. No offshore teams. Just senior engineers who ship.
Trusted by teams building at
What We Build
End-to-end engineering for products that need to work at scale.
AI Product Development
AI-powered products that go beyond chat interfaces. We build agentic workflows, RAG pipelines, NLP systems, and intelligent automation that delivers real business value.
Web Development
Full-stack web applications built for scale. From SaaS platforms to ecommerce systems, we ship production-grade software that handles millions of users.
App Development
Native and cross-platform mobile apps that users love. We've built apps that hit #1 in the App Store and serve users across five countries.
Data Engineering
Scalable data pipelines, ETL systems, and search infrastructure. We design the plumbing that powers data-driven products and real-time analytics.
Our Work
Products we've built, teams we've led, and companies we've helped scale.
Fullsend Technology
Co-Founded & Built
AI-native content automation for small businesses. We built agentic workflows that surface keyword opportunities, generate SEO-optimized content, and publish directly to websites and social channels.
Akin Mental Health
Co-Founded & Built
An online learning platform for families navigating severe mental illness. We gave caregivers the practical skills, community, and support that the mental health system doesn't provide.
INDY Cinema Group
Engineering Leadership
A cinema operations platform used by hundreds of cinemas across five countries. We led an eight-engineer team, introduced CI/CD automation and observability tooling, and brought structure to a fast-moving organization.
Monkey Taps
iOS & Backend Development
We launched the first iOS home screen widget and hit #1 in the US App Store. We built backend infrastructure, NLP-powered personalization, and the widget that started it all.
Joymode
Engineering & Growth Lead
An on-demand product rental platform helping people do more while owning less. We joined as full-stack engineers and quickly grew to lead engineering and product on the Growth team.
Society6
Platform Engineering
A marketplace where artists sell their artwork on products. We led the Data and API engineering teams, building search infrastructure, image processing pipelines, and microservice architectures.
Built by Engineers Who Ship
Control Flow Technology is a software consultancy founded by Matthew Montanez, a senior engineer and technical leader with over fifteen years of experience building products that scale.
We've co-founded startups, led engineering teams of eight-plus, and shipped products used by millions of people across five countries. Two of those companies were acquired. One of our apps hit #1 in the US App Store.
We don't just write code. We build the systems, teams, and infrastructure that turn ideas into products people rely on.
Frequently Asked Questions
Answers to common questions about working with us.
We're founder-led, senior-only, and we've built and sold our own companies. You won't get a sales team handing you off to junior devs. You get the people who've actually shipped products, led teams, and operated at scale.
It starts with a call to understand what you're building and where you need help. From there we scope the work and get building. No 6-month discovery phases, no 50-page strategy decks. We move fast because we've done this before.
Both. We've co-founded startups from scratch and led engineering at companies with millions of users. Whether you're pre-launch or scaling, we know what good looks like at every stage.
We're stack-flexible but most experienced with Python, Django, React, Vue.js, Swift, and AWS. We pick the right tools for the job rather than forcing a one-size-fits-all approach.
We offer both project-based and retainer engagements depending on what you need. Some clients bring us in for a focused build, others keep us on for continuous development and technical leadership.
Ready to Build?
Whether you need a full product built from scratch, an engineering team scaled, or an AI strategy that actually ships, we're ready to talk.