np. Python, Warszawa, Startup

Senior Java Developer


We are looking for a Senior Java Developer to join our dynamic team, working on a project for Ascendix’s Luxembourg-based client. 

Flibco provides a personalized transportation service that allows one to reach the main European airports. There are several applications for collaborators and users: web and mobile apps for travelers, web applications for S2S and D2G administrators, mobile applications for S2S and D2G drivers, and mobile applications specified on tickets. All modules work together to ensure the operation of travel services 

Tech Stack: Java 17, Spring Boot, Maven, Git, MongoDB, Swagger, Docker, Kubernetes, Helm, Kibana, Azure Web Services, Azure DevOps, ELK Stack 

Project team: PM, BA, Solution Architect, Java developers, front-end developers, QAs, mobile developers 


  • Proficiency in Java technologies 
  • A deep understanding of APIs and microservices patterns 
  • Extensive experience with Java (at least version 11), Spring Boot, MongoDB, and PostgreSQL 
  • Proficiency in database theory, SQL, and best practices for No-SQL databases 
  • Familiarity with Kubernetes and Spring Boot integration testing 
  • Adherence to best engineering practices like SOLID, KISS, DRY, and more 
  • Writing efficient code that thrives in concurrent and high-load environments 
  • A strong grasp of estimation techniques 
  • Exceptional problem-solving skills 
  • Upper-intermediate English proficiency 

Would be a plus:   

  • Experience in DevOps with Terraform and Helm Charts 
  • Azure Cloud expertise 
  • Knowledge of Redis 


  • Craft and implement technical solutions from the ground up, creating scalable and robust systems/components that align with current business needs 
  • Conduct code reviews to maintain code quality and foster team collaboration 
  • Proactively drive system improvements to keep our technology stack at its best. 

Ascendix offers you:  


  • 20 paid vacation 
  • 5 paid sickness 

Career and professional growth: 

  • B2B and remote cooperation 
  • Career development and professional growth 
  • Technical performance reviews and 360 Evaluation 
  • Collaboration with a personal Resource Manager, Technical leads, and mentors 

Learning and Development: 

  • Udemy and Pluralsight subscription 
  • Internal knowledge-sharing opportunities 

Corporate spirit: 

  • Online and offline events & team-buildings 
  • Friendly and supportive atmosphere 
  • Open management 

Ascendix Technologies
10 - 50
Real Estate, Logistics, Other, Big Data, Cloud Computing

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