Zurui.dev owlZurui.dev | Builds your platform like you really wanted it!

About zurui.dev

We build software the way a night owl works — patient, attentive, precise.

Zurui.dev is a software development company founded in 2016. We partner with founders and product teams to design and ship considered digital products — from marketing surfaces and interfaces to the internal systems that keep teams flying straight.

Zurui.dev owl

The Zurui.dev story

The word zurui (ずるい) carries a subtle edge in Japanese — sly, clever, unexpectedly sharp. It is the quality of doing more with less, of finding the elegant path where others see only complexity. That is the spirit we bring to every project.

Founded in 2016, Zurui.dev began as a small collective of designers and engineers who believed software should be built with patience, not production-line haste. We have since helped startups and established teams ship products that feel quiet on the surface and powerful underneath.

No factory line, no template deliverables — just careful work, made in daylight and shipped by moonlight. We listen closely, design deliberately, and build systems that age well.

Founded
2016
Projects
300+
Studio
Remote

The team

A small group of people who care about craft.

Serge Pennartz

Serge Pennartz

Founder & CEO

He has more than 30 years of experience in building tailored projects and software platforms with internal as well as external teams worldwide.

Bao Ngo

Backend & Database Engineering

Specialized in building databases and APIs.

Minh Hy

Minh Hy

Project Manager & Architect

Project manager and specialized in architecture setup, API integration and AI.

Nhan Tran

Full-Stack Engineer

Specialized in building frontend designs and integrating them with backend code in Ruby.

Tien Hy

Tien Hy

Frontend Developer & Designer

Frontend developer and designer.

Tin Troung Nghia

Full-Stack Developer

Full stack experienced developer in frontend, backend and API.

Thoeni Taillaert

Thoeni Taillaert

Hardware Integration

Specialized in hardware integration like access control, POS materials, lightning, and servers.

Pavel

Ruby & Fintech Developer

Specialized in Ruby backend and frontend development, more Fintech oriented with very good knowledge of APIs and financial tooling.

Alex

Alex

Training & Nutrition Software

Specialized in training and nutrition software for the fitness industry.

Start a project

Want to build something quietly great?

Discuss your project

Book a meeting

Talk to us — pick a time that works.

A 15-minute intro, a 30-minute product walkthrough, or a 60-minute deep-dive analysis with Pennartz Serge. Choose a duration, pick a slot, and we'll take it from there.

15 min · Intro call

Quick online meeting to align on your idea.

30 min · Product walkthrough

Deeper look at scope, stack and timelines.

60 min · Deep analysis

Full analysis of your platform or process.