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Wallet icon Coin icon Rate 120 000 CZK - 140 000 CZK / month info
Timer icon Form of cooperation Full-time / 40% Remote
Briefcase icon Sector Telco
Location icon Location Praha

info The reward is calculated upon delivery of 20 MD per month (1MD=8h)

Project duration 12 months with possibility of extension
Period of cooperation 01.01.2026 - 31.12.2026
Start date 01.01.2026 or by agreement
Technology
  • Java EE
Languages
  • English flag English - conversational, B1
  • Slovak or Czech flag Slovak or Czech - active, B2/C1/C2

Project description

  • development and evolution of a robust backend solution for a telecommunication operator, which provides critical infrastructure for digital communication
  • collaboration within a senior agile team on technical challenges related to system integration, scaling, and reliability
  • design and implementation of microservices built on Spring Boot 3+, utilizing event-driven architecture principles
  • system integration via Kafka and SOAP/REST API, design and documentation using OpenAPI
  • working with relational databases (PostgreSQL, Oracle) using JPA/Hibernate, query optimization, and performance analysis
  • management of application infrastructure running on on-premises Kubernetes, deployment via ArgoCD and CI/CD pipeline (GitLab CI, Jenkins)
  • onsite collaboration in Prague 3 days a week and 2 days remote

Project requirements

  • at least 7 years of experience with Java development
  • advanced experience with:
    • Java, including functional programming and Stream API
    • code design and refactoring using common design patterns
    • Spring Boot 3+, especially with Dependency Injection and IoC principles
    • JPA / Hibernate with a focus on performance and consistency
    • REST and SOAP WS including declarative and imperative implementation
    • application integration via Kafka and a deeper understanding of its principles
    • debugging and troubleshooting applications in production
  • experience with:
    • creating efficient SQL queries, working with indexes, and basic performance analysis
    • development and operation of solutions on PostgreSQL or Oracle
    • Git for version control
    • basic use of GitLab CI/CD pipeline and Kubernetes
  • advanced knowledge of:
    • JVM lifecycle and the application build process in Maven
    • API security standards – OAuth2, JWT, TLS, SAML
  • knowledge of:
    • basic principles of microservice architecture and messaging
    • system performance analysis, identification of bottlenecks, and their elimination
  • advantage:
    • experience with ArgoCD, Jenkins, or practical use of AI-assisted programming tools
    • overview in the area of infrastructure and operation of solutions in on-prem Kubernetes
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