About Me
I’m a backend engineer who builds systems that make sense — reliable, fast, and easy to reason about.
- Kotlin + Spring WebFlux, coroutines, MongoDB; performance and stability first.
- Azure EventHub/ServiceBus — billions of events/month, observability via App Insights.
- Data consolidation across sources, clean APIs (GraphQL/REST).
- Shared internal libraries for the team, security with Spring Security.
- In meetings I often just open the IDE and ship a working version.
Experience
Backend Kotlin Developer
Green:Code by Škoda Auto
Apr 2022 – Present
Remote / Prague, CZ
5B+ events/monthReactive KotlinAzure-native
- High-throughput data consolidation services ingesting billions of events/month from Azure EventHub.
- Kotlin + Spring WebFlux, coroutines, MongoDB; focus on performance and stability.
- Data consolidation from multiple sources into consistent models and APIs (GraphQL/REST).
- Internal libraries and reusable modules for the team; Spring Security integrations.
- Azure integrations: App Insights, KeyVault, ServiceBus, Blob Storage; observability and reliability.
KotlinWebFluxMongoDBEventHubServiceBusKeyVault
Java Software Engineer
MONET+
Jun 2020 – Mar 2022
Zlín, CZ
gRPC + Netty POSJava 11Security-first
- FARE project — backend for public transport card transactions (crypto, validation, processing).
- POS server receiving transactions directly from terminals (Netty) with multi-node gRPC APIs.
- Java 11, Spring Boot, Reactive stack, PostgreSQL; strong focus on security and throughput.
Spring BootReactivePostgreSQLgRPCNetty
Technician & Smart Home Programmer
OrangeControls → IQ Budovy
Jan 2017 – May 2020
Prague & Zlín, CZ
Loxone/AMXOn-site commissioningAV & low-voltage
- Low-voltage installations and AV systems; later AMX programming for control systems.
- Smart home programming with Loxone — wiring, sensors, full configuration and automation.
- Hands-on work on large residential/commercial installations; commissioning and testing.
LoxoneAMXAVIoTLow-voltage
Featured Projects
CephDetail.cz
Premium car-detailing studio with custom booking, portfolio and admin system. Tech + craft in one place.
Next.jsTypeScriptTailwind CSSKotlinSpring BootGraphQL
View Projecthoz.network
Gaming network rebuilt with a modern stack — BedWars, lobby systems, Redis-based join/hand-off, CI/CD.
KotlinPaperMCRedisPostgreSQLDockerRancherGitLab CI
View ProjectSkills & Technologies
languages
KotlinJavaTypeScriptSQL
frameworks
Spring BootGraphQLWebFluxNext.jsTailwind
databases
MongoDBPostgreSQLRedis
tools
DockerAzureGitLab CILinuxRancher
Education
Electrical Engineering (vocational)
SOŠ Josefa Sousedíka Vsetín
2014 – 2017
Vsetín, CZ