Freelance Senior Java Developer

Europe, Remote Part-time, B2B
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Ascendix Technologies, founded in 1996, is a global software service company specializing in AI and PropTech. Our core mission is to help our clients get top-notch business results through the smooth automation of processes, leveraging AI solutions, customer-facing apps, and precisely tailored back-office software to meet their distinct needs.
Based in bustling Dallas, Texas, we operate across the globe, with strategically positioned teams throughout Europe. 

Project description: 

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

Flibco provides a personalized transportation service allowing to reach the main European airports. There are several applications for collaborators and users: web and mobile app for travelers, web applications for S2S and D2G administrators, mobile applications for S2S and D2G drivers, mobile application 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 

Requirements: 

  • Proficiency in Java technologies 
  • A deep understanding of APIs and microservices patterns 
  • Extensive experience with Java 17, Spring Boot and MongoDB
  • Good theoretical and practical MongoDB knowledge. Experience in designing and optimizing database schemas, writing queries, and aggregates. Understanding the specifics of working with NoSQL databases. 
  • 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 Java 21 
  • Experience in DevOps with Terraform and Helm Charts 
  • Azure Cloud expertise 
  • Knowledge of Redis (Redisson client for Java) 

Responsibilities: 

  • 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. 

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