S9Y.ai

S9Y is a Czech software development shop founded by David Brožík, Jan Hicl, and Lukáš Beneš. Based in Plzeň, the company was born out of frustration with the typical agency playbook: unrealistic pricing that balloons mid-project, broken apps, poor communication, and little ownership. The founders had cut their teeth maintaining high-reliability systems—Big Data platforms and mobile apps serving hundreds of thousands of users that couldn't go down for maintenance. That background shapes how they work now: they take full ownership, price transparently upfront, and stick around after launch.

Clients like Generali Česká Pojišťovna, Spendee, Tacticaware, Workpress Aviation, and Vím o všem have publicly praised their work. Nikola Bozadziev from Generali noted that S9Y were the only vendors among several who could prove their theory and deliver a working proof of concept. David Navečeřal, CEO of Spendee, said the team integrates so seamlessly they feel like internal staff. Martin Opletal at Tacticaware highlighted that S9Y alerts you to problems, doesn't hide information, and pushes for maximum performance rather than half-measures.

Services and capabilities

S9Y handles three main buckets: mobile apps, web systems, and AI/ML process automation.

For mobile, they build custom apps designed around actual customer behavior and use patterns. They emphasize clean code and user-centered interface design.

On the web side, they specialize in vertical and horizontal portals plus enterprise information systems with complex architecture and advanced features. They skip presentation websites and focus on tools that move the needle. They test rigorously before launch and apply best coding practices. Jitka Civínová from Workpress Aviation noted their ability to change applications during testing if they weren't working as expected, and their speed in responding to requests.

For process automation, they use AI and ML to optimize workflows. They frame this as making organizations faster and more efficient over time.

Notable work

Generali Česká Pojišťovna ran multiple vendor workshops to evaluate approaches. S9Y alone could demonstrate both the theory and a practical proof of concept. Spendee's CEO describes the team as indistinguishable from internal staff—not external partners but part of the team itself. Tacticaware's Martin Opletal credits them with completing work to maximum performance rather than cutting corners. Workpress Aviation values their flexibility and speed to adapt during testing. Vím o všem founder Josef Beneš observed that S9Y sees themselves as project partners, bringing real investment in quality to the final product.

How they work

S9Y positions itself around six core business values: growing together with clients (your success is their only indicator of success), flawless workflow (open communication, delivery on time), fair pricing (no surprises mid-project, crystal clear about money upfront), partnership and aftercare (support continues after launch, not dropped after delivery), always finding the way (willing to go beyond their current limits), and environmental responsibility (offices run on renewable energy, ethos of mindful business). They explicitly state they treat projects as their own, immerse themselves in the work, and handle aftercare as a priority rather than an afterthought. No engagement model or team structure details are specified in the source material.