Luck-Driven Development

Tomáš Štěstí

Senior Backend Developer · Java / Kotlin · Freelance, Prague

Štěstí means “luck” in Czech. It’s my surname — not my deployment strategy.

A decade building production software: a crypto exchange and the CZKC Czech stablecoin, global logistics at DHL, scanless retail across Germany, RCS messaging for Vodafone UK, and a travel platform for Der Touristik. I own JVM services end to end — Java, Kotlin, Spring — and I’m usually the one handed the integration nobody wants: blockchain, payment rails, real-time tracking. I’ve also worn the DevOps, Scrum Master, competence-lead and product-owner hats, so I can take a piece of work from an unclear brief to running in production without much supervision.
Available for contract work — remote or hybrid.

Get in touch See experience ↓

At a glance

8
Client engagements
5
Industries shipped in
4
Payment & chain rails
3
Countries delivered in

Skills

Backend

JVM · Data · APIs

Java 8/11/21KotlinSpring Boot WebFluxApache KafkaJPA / Hibernate SQLOpenAPI (Swagger)gRPC / Protobuf MapStructTomcatJUnit

Frontend

Going full-stack

ReactVueAngular JavaScriptHTMLCSS

DevOps & Cloud

Build · Ship · Observe

DockerKubernetesOpenShift GCPAzureJenkins Maven / GradleELK / KibanaSonarQube Git

Delivery

Plan · Lead · Ship

Agile / SCRUMMentoring & onboarding Hiring interviewsRequirements & backlog Stakeholder presentationProduction incident response Delivery in English (ES/DE)

Experience

2023 — now
INVENTI · Senior Software Developer · freelance
BIT Plus crypto exchange & CZKC, a Czech stablecoin. Extended the BIT Plus mobile product from the back end and integrated the blockchain & payment rails — Tatum (detecting Ethereum transactions on chain), Alchemy (validating them), ThePay (CZK/EUR gateway) and CitFin (bank statement ingestion in ISO 20022). Ran real-time production incident response and hot-fix deployment, and coordinated versioning and DEV/TEST/PROD releases with the front-end team. Kotlin · Java · Spring · SQL · Docker · Prague / hybrid
CK Fischer (Der Touristik) — front-end and back-end development on the booking platform used by travel agencies. Angular · Vue · Java · Spring · SQL · Docker · Jenkins
2023
IBM · Software Developer · part-time
Java · Maven · Prague / hybrid
2022 — 2023
GK Software SE · Software Developer · freelance
GK GO scanless-shopping store: designed and built microservices for the cloud backend that processes the customer journey end-to-end — from shop check-in through to checkout and payment. Java 8/11 · Spring Boot · Kafka · JPA · MapStruct · Kibana · SonarQube · Germany
2020 — 2023
NEON IT · Java Competence Lead & Developer · freelance
NeonApp and company-wide process digitization on the Tabidoo low-code platform — from files to monitors. Led Java competence, ran hiring interviews, trained and onboarded junior developers, and owned analysis, backlog and delivery for internal & client modules (HR, inventory, tasks, finance) — including gathering requirements from customers and presenting solutions back to stakeholders. Java 11 · Spring Boot · Kafka · React · GCP / Azure · Kubernetes
2020 — 2021
DHL Global Forwarding · DevOps Engineer · freelance
GAPI / Edge Response Cache: designed, built and ran reactive microservices aggregating real-time package-tracking data from many DHL backend systems under one unified API. Java 11 · WebFlux · Kafka · Apache Camel · Kubernetes · OpenShift · GCP
2018 — 2019
Hewlett Packard Enterprise · Java EE Developer · contract
Message+ — RCS messaging delivered as a sub-delivery for Vodafone UK. Built microservices for an asynchronous multimedia-messaging platform and supported the RCS standard implementation. Java 8 · Spring · Hibernate · gRPC · Protobuf 3 · ELK · Madrid, Spain
2018
T-Mobile · Java Developer · contract
Java · Prague
2015 — 2017
Mavenir · acision · Unicorn · Verification Engineer & internships
Where it started: software verification engineering at Mavenir (formerly Comverse / Xura) and telecom internships in Brno — the first professional Java written in Unicorn's Java Hatchery trainee program. Java · Telecom · Brno

Background

Roles I've also held

  • DevOps Engineerrole
  • Scrum Masterrole
  • Java Competence Leaderrole
  • Product Owner / PMrole

Education & languages

  • Brno University of Technology (VUT) — Information Technology2012–16
  • Czechnative
  • Englishadvanced

Need someone who can own an integration end to end?

Available for contract work, remote or hybrid. The fastest way to reach me:

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