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Wallet icon Coin icon Rate 6 200 € - 7 200 € / month info
Timer icon Form of cooperation Full-time / 60% Remote
Briefcase icon Sector Banking
Location icon Location Viedeň

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

Project duration 6 months with the possibility of extension
Period of cooperation 15.09.2025 - 31.03.2026
Start date 15.09.2025 - 01.10.2025
Technology
  • ElasticSearch
  • SCRUM
  • Kotlin
  • Kubernetes
  • Spring
  • WS Webservice REST
  • Docker
  • JSON
  • Java
Languages
  • English flag English - active, B2/C1/C2

Project description

  • cooperation on the development of the back-end platform of internet banking - modern digital banking
  • design and implementation of backend services in Java and Kotlin in the Spring Boot environment
  • expansion and management of the central JSON-over-HTTP API for internet banking
  • work with search technologies and distributed systems – design and optimization of search functions
  • implementation and management of Elasticsearch solutions (indexing, query optimization, integration with the backend)
  • significant added value is experience with integrating LLM (Large Language Models)
    • ideally using/resting AI models to improve UX, automate common tasks or personalize the digital bank
  • integration of LLM models (e.g. OpenAI, Hugging Face, Ollama) into services to improve UX and automation
  • creation of clean, sustainable code including tests (unit/integration)
  • cooperation on the CI/CD pipeline and deployment in the cloud (AWS/Azure, Kubernetes)
  • close cooperation with product development teams, architects and AI specialists
  • cooperation in an agile environment (Scrum/Kanban), code reviews, active communication with the team in Vienna
     
  • cooperation in a hybrid setup on-site (1-2 days a week, Vienna) / remote

Project requirements

  • min. 3-year commercial experience with backend development
  • excellent knowledge of Java and practical experience with Kotlin
  • advanced knowledge of Spring Boot and REST API creation (JSON over HTTP)
  • knowledge of Elasticsearch (indexing, search, optimization)
  • experience with search technologies and/or distributed systems
  • experience with cloud deployment (Docker, Kubernetes, CI/CD)
     
  • active knowledge of English at a communicative level (written and spoken) B2 - C1
     
  • big advantage:
    • experience with LLM integration (OpenAI, Hugging Face, Ollama, etc.)
    • knowledge of Python
    • previous experience in the banking sector or FinTech projects
    • experience with microservices architecture and high-performance systems
    • knowledge of DevOps approaches and monitoring tools
       
  • tech stack:
    • Java, Kotlin, Spring Boot
    • Python
    • REST API (JSON over HTTP)
    • Elasticsearch, Search/Distributed Systems
    • LLM integrations (OpenAI, Hugging Face, Ollama)
    • Docker/Kubernetes
    • CI/CD, AWS/Azure
    • Git, Agile/Scrum
       
  • analytical thinking
  • team player
  • attention to detail
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