TSM / CETIN
Senior backend and integration work on Kotlin/Java/Spring services, PostgreSQL-backed systems, B2B flows, PEW, NIP, change management and production rollout of new platform versions.
Senior Backend & Integration Engineer
Pavel Kleisner
Backend, integration and release work for systems where production mistakes are expensive.
I mainly work with Kotlin, Java, Spring and PostgreSQL. In recent years my focus has been TSM/CETIN production flow: B2B behavior, data compatibility, incident analysis, new version rollout and the places where business rules meet runtime reality.
I am not a “full-stack generalist for everything”. I am a backend-heavy programmer who can still read the frontend, database and operational logs when the real cause is spread across the system.
9+
years in software
5700+
tracked work commits
TSM
2.2 / 2.4 production rollouts
Prague
Czech Republic
Where I fit best
The value is usually not another abstraction layer. It is a change that survives real data, integrations, support and the next release.
- IntegrationsB2B APIs, process flows, message behavior, retries, logs and failure modes that only become visible after deployment.
- ReleasesRolling new versions into real environments while watching compatibility, old data and operational risk.
- ArchitectureSmall safe changes, clearly named rules and service boundaries. No ceremony around patterns.
- DebuggingIncidents through logs, metrics, databases and domain context. Not random patches around symptoms.
Core stack
Kotlin Java Spring PostgreSQL Kafka Kubernetes Angular Oracle Astro TypeScript
Experience snapshot
Most of my professional work is internal or client-owned, so I describe responsibility and production context rather than exposing code.
ZIS
Enterprise Java and ZK/ZUL work across screens, controllers, services, DAO layers, imports, Excel processing and production bug fixes.
MNCP
Kotlin/Spring, Angular and database work around authentication, measuring batches, archives, exports and operational fixes.
Interested in collaboration?
If you need a senior engineer for backend systems, integrations, production releases or long-term product development, email is the fastest channel.