Custom software development, built to last
Founded in 2025 in Montreal, Flowstack is a software development company that helps businesses build high-performance, sustainable web applications.
We believe custom software should serve the vision of those who use it—not the other way around. That’s why we work in direct collaboration with our clients, with no intermediaries or subcontracting. Every project is approached with the same rigor: solid architecture, tested code, and transparent delivery at every step.
Our approach is rooted in a deep understanding of your business objectives. We don’t just code—we guide you from design to production, ensuring every technical decision serves your growth.
Our approach is rooted in a deep understanding of your business objectives. We don’t just code—we guide you from design to production, ensuring every technical decision serves your growth.
Our approach
Building software that drives your growth
Rigor and quality
Every feature is covered by automated tests before production release.
Modern technologies
Next.js, TypeScript, React—the most reliable tools in the industry.
Optimal performance
Load time under 2 seconds, optimized for every device.
Why Flowstack
What sets us apart:
rigor, transparency,
and direct collaboration
Direct collaboration
No intermediaries—you work directly with the developer building your project.
Senior expertise
Senior-level work on every project. No junior developers learning on your budget.
Based in Montreal
Local presence, understanding of the Quebec market, and availability in your time zone.
Measurable results
99.9% uptime, under 2-second load times, 100% test coverage.
Ready to bring your project to life?
We transform your ideas into high-performance software—with rigor, transparency, and attention to detail.