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Wallet icon Coin icon Rate 5 200 € - 6 200 € / month info
Timer icon Form of cooperation Full-time
Briefcase icon Sector Information Technology
Location icon Location 100% Remote

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

Project duration 3-6 months with the possibility of extension
Period of cooperation 01.09.2025 - 30.11.2025
Start date 01.09.2025 - 01. 10. 2025 or by agreement
Technology
  • PostgreSQL
  • RabbitMQ
  • WS Webservice REST
  • Redis
  • Java
  • Spring Boot
Languages
  • English flag English - active, B2/C1/C2

Project description

  • analysis of the existing implementation of the search engine (Solr) and design of an optimal migration strategy to OpenSearch
  • design and implementation of data migration including index, schema, and analyzer adjustments
  • modification of backend services built on Java 21 and Spring Boot to work with OpenSearch
  • implementation and maintenance of REST API for internal integration flows
  • setting up messaging infrastructure using RabbitMQ to support communication between components
  • working with PostgreSQL (data layer) and Redis (cache) to optimize application performance
  • deployment and operation of the solution in the Kubernetes (AWS EKS) environment, including CI/CD pipeline configuration
  • close cooperation with the integration team and other developers within the group to ensure the platform is fully compatible with the target environment
  • creation of technical documentation, migration runbooks, and operational manuals for the new system
     
  • collaboration possible in a 100% remote setup

Project requirements

  • min. 3-year commercial experience with development in Java (ideally Java 17+ / Java 21)
  • practical knowledge of Spring Boot and backend service design
  • experience with the design and implementation of REST API
  • knowledge of working with relational databases (PostgreSQL)
  • experience with cache technologies (Redis)
  • practice with message broker (RabbitMQ or equivalent)
  • experience with containerization and orchestration (Kubernetes – ideally AWS EKS)
  • experience with CI/CD pipeline (GitLab CI or others)
  • active knowledge of English at a communicative level (spoken and written)
     
  • advantage:
    • previous experience with OpenSearch (index creation, analyzers, performance optimization)
    • practice with migration from Apache Solr to OpenSearch in a production environment
    • experience with integration projects in a corporate environment
    • knowledge of AWS services (IAM, ECR, CloudWatch, S3) related to application operation
    • experience with optimizing search solutions and performance tuning
       
  • tech stack:
    • Java 21, Spring Boot
    • REST API
    • PostgreSQL
    • Redis, RabbitMQ
    • OpenSearch (migration from Solr)
    • Kubernetes (AWS EKS)
       
  • analytical thinking
  • team player
  • attention to detail
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