Our story

For agencies, by engineers who work with clients.

At HOW Studio, we've spent years working with teams of all sizes: startups, agencies, and large organizations. We've built web applications and have guided digital strategy. And while the tools we use to build have evolved rapidly, the way we communicate with clients hasn't kept up. Especially when it comes to feedback.

In our day-to-day work, we noticed a recurring pain point: communicating clearly with non-technical clients, especially about bugs, feature requests, priorities, and progress, was often messy, scattered, or too reliant on emails, screenshots, and long threads. For technical clients, we could get away with GitHub issues or Notion boards. But for everyone else it was friction, time consuming and nerve-wracking.

That's when the idea behind Definable was born.

We wanted a tool that bridges the gap between agencies and clients, without setup headaches. And we know it is "yet another system" to manage. But something lightweight, respectful of everyone's time, and powerful enough to keep even complex projects on track, was worth it for us.

One of the biggest challenges we've faced as an agency is managing scope creep. When communication is unclear or fragmented, it becomes easy for small changes to snowball into major shifts, without proper discussion or alignment. Definable helps bring clarity to what was agreed, what's being discussed, and what's changing, making it easier to say "yes" when appropriate and "not yet" when necessary. Or even revisit the budget when a feature clearly goes beyond the original scope.

Definable is our investment in that vision:

A shared space where feedback, discussion, and progress feel easy. A system that works just as well for your developer or product manager as it does for your client's marketing lead. A way to stay focused, reduce scope creep, and build stronger client relationships.

We built Definable because we needed it ourselves. And now we're making it available to other agencies, studios, and freelancers who've felt the same pain.

Let's build better bridges.

The team

Dimitris Kotsakos

Dimitris Kotsakos

Co-founder

Dimitris is an engineering manager and software engineer with more than a decade of experience building reliable, high-scale products. He leads the Machine Learning Core team at Elastic and co-founded HOW Studio, a software agency behind products used by thousands of professionals. Through his agency work, he experienced firsthand the communication challenges that arise when managing client projects. At Definable, he focuses on product direction, reliability, and long-term strategy.

Chrysa Tzouma

Chrysa Tzouma

Co-founder

Chrysa is a full-stack engineer with deep expertise in mobile development and user experience. She has led projects across multiple industries and is passionate about designing interfaces that feel intuitive, simple, and calming. Especially for busy teams and clients who need clarity without complexity. Through her agency experience, she understands the importance of seamless, secure communication between teams and their clients. At Definable, she leads engineering and product design.

Giorgos Tsiftsis

Giorgos Tsiftsis

Co-founder

Giorgos is a backend developer with over 20 years of experience, specializing in Ruby and building scalable systems. He spent years at Skroutz, Greece's largest e-commerce platform, where he helped grow the engineering team from 10 to over 50 developers and led product engineering. As a co-founder of HOW Studio alongside Dimitris, he brings deep expertise in solving complex technical challenges and building systems that work reliably at scale. At Definable, he focuses on backend architecture and ensuring the platform remains robust as teams rely on it for critical client communication.

Get in Touch

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If you'd like to try Definable or ask a question, feel free to reach out.