Production integrations
B2B APIs, process flows, message-driven behavior, retries, logs and failure modes that matter after deployment.
Senior Backend & Integration Engineer
Pavel Kleisner
I build and ship production backend systems for telecom and enterprise environments.
My strongest area is the place where domain rules, data, integrations and releases meet. I work mainly with Kotlin, Java, Spring and PostgreSQL, with recent focus on TSM production rollouts, B2B behavior, observability and incident analysis.
9+
Years in software
5700+
Tracked work commits
TSM
2.2 / 2.4 production
Prague
Czech Republic
What I bring
A backend-first profile with enough full-stack, data and production context to own real system behavior.
Release ownership
Rolling new versions into real environments while watching compatibility, data shape and operational risk.
Pragmatic architecture
Small safe changes, named business rules, clear service boundaries and code that can survive future requirements.
Full-stack context
Backend work with enough frontend and database experience to understand the whole production flow.
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.
TSM / CETIN
2020 - present
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.
ZIS
2017 - 2018
Enterprise Java and ZK/ZUL work across screens, controllers, services, DAO layers, imports, Excel processing and production bug fixes.
MNCP
2018 - 2021
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.