Lead engineer · AI-native builder · Consultant
Software that holds
up in production.
I'm Vítězslav Tajzich — a pragmatic, AI-native software engineer with 20+ years building backend platforms, developer tooling, and the automation that holds it all together. I pick the right tool for the job, write tests first, and lead a small team putting core AI into how we work.
What I do
Across the stack, from platform to product.
I take on a focused set of work where I can stay hands-on — choosing the right tool for the job, writing tests first, and automating everything that reasonably can be.
Backend & platform engineering
Core services and SaaS platforms in Java & Kotlin with Spring Boot, grounded in Domain-Driven Design.
Developer experience & internal platforms
Developer portals and tooling that make teams faster — including Backstage-based portals with custom plugins.
DevOps & automation
Infrastructure as code, CI/CD pipelines, Kubernetes, and an automate-first mindset throughout.
Technical leadership
Leading small, highly automated teams that ship quality software — plus mentoring and consulting.
AI engineering
Core AI baked into products and workflows: automating support, wiring up agents, building an AI teammate.
Mobile
Native iOS development with Swift and SwiftUI, from first sketch to a polished App Store release.
About
Two decades of building software that lasts.
I've spent over two decades designing and building software — from core platform services and SaaS products to CI/CD pipelines and cloud infrastructure. I care about clean domain models, maintainable code, and developer experience, and I'm just as comfortable in the backend as I am wrangling DevOps.
My approach is pragmatic: technology is a means, not an end, so I favor whatever tool best accomplishes the task. I'm a long-time practitioner and advocate of agile methodology, test-driven development, and Domain-Driven Design. For the past six years I've led a small team of developers and DevOps engineers — and I still write code every day, because development is both my profession and the way I relax.
I'm increasingly AI-native in how I build: my team is putting core AI to work across our day-to-day, automating everything we reasonably can — from a support agent to building our own AI teammate. I treat AI as another first-class tool in the stack and bake it into platforms and developer workflows rather than bolting it on.
What I work with
Featured project
Archery Spot
A cross-platform app for archery scoring — I'm the founder and sole developer. A Kotlin Multiplatform core shares the domain logic across a SwiftUI iOS app (live on the App Store) and a Jetpack Compose Android app (in development). It started as a hobby project: a place to bring ideas to life and explore techniques I bring back into backend work.
- Kotlin Multiplatform core with a Domain-Driven design, shared across iOS and Android
- Cloud data and multi-device sync powered by Firebase / Firestore
- Native UIs: SwiftUI on iOS, Jetpack Compose on Android (under development)
- Multiple target types within a single event, each with its own scoring
Get in touch
Tell me about your project.
Email is best. I read everything and reply personally, usually within a day or two.
Vítězslav Tajzich — sole proprietor registered in the Czech Republic.
Thanks — message noted.
This is a demo form. On the live site it would reach my inbox; for now, email me directly.