Back-End Software Engineer (Java/Kotlin)

externaljobboards· Java Department
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📍 Poland

About this role

Join Exadel as a Back-End Software Engineer and bring bold ideas to life on a long-term global project. You’ll write clean code, drive impact, and have a real voice at the table.

Why Join Exadel

We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks.

From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next.

What powers it all? Our people are ambitious, collaborative, and constantly evolving.

About the Client

An international transportation technology company focused on building scalable digital solutions for modern rail operations. The organization develops internal platforms and automation tools that improve operational efficiency, support business growth, and streamline complex processes in a fast-paced environment. 

Project Tech Stack

Kotlin, Spring Boot, Akka/Pekko, PostgreSQL, Kafka, Event Sourcing, CQRS, AWS, Kubernetes (K8s), Docker, Microservices, RESTful APIs

What You’ll Do

  • Develop and maintain backend microservices for e-commerce platforms
  • Work in a cross-functional, self-organized Agile team
  • Analyze and drive technical improvements
  • Ensure high engineering quality through testing and code reviews
  • Take ownership of features end-to-end, from design to production
  • Contribute to the continuous improvement of existing systems
  • Use modern development tools and AI-assisted engineering solutions responsibly

What You Bring

  • 3+ years of experience building backend systems with Java or Kotlin (or willingness to learn Kotlin)
  • Experience with Spring Boot and microservices architecture
  • Good understanding of OOP and Software Design Patterns
  • Experience with PostgreSQL or other relational databases
  • Knowledge of testing principles and engineering best practices
  • Familiarity with CI/CD pipelines and production deployments
  • Strong communication skills in English

Nice to have

  • Experience with Akka/Pekko
  • Experience with Docker and Kubernetes
  • Knowledge of Kafka and event-driven architectures
  • Understanding of Event Sourcing and CQRS
  • Experience with AWS cloud services

English level:

Upper-Intermediate

Legal & Hiring Information 

  • Exadel is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more
  • Reasonable accommodations are available to enable individuals with disabilities to perform essential functions
  • Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs

Your Benefits at Exadel  

Exadel benefits vary by location and contract type. Your recruiter will fill you in on the details.

  • International projects
  • In-office, hybrid, or remote flexibility
  • Medical healthcare
  • Recognition program
  • Ongoing learning & reimbursement 
  • Well-being program
  • Team events & local benefits 
  • Sports compensation 
  • Referral bonuses 
  • Top-tier equipment provision

Exadel Culture

We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.

Frequently Asked Questions

Is the salary disclosed for the Back-End Software Engineer (Java/Kotlin) position at externaljobboards?
The salary for this Back-End Software Engineer (Java/Kotlin) role at externaljobboards is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Back-End Software Engineer (Java/Kotlin) position at externaljobboards located?
This Back-End Software Engineer (Java/Kotlin) role at externaljobboards is based in Poland. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Which team or department does the Back-End Software Engineer (Java/Kotlin) at externaljobboards belong to?
This Back-End Software Engineer (Java/Kotlin) position is part of the Java Department department at externaljobboards. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Back-End Software Engineer (Java/Kotlin) position at externaljobboards?
Click the "Apply Now" button on this page. You will be redirected to externaljobboards's official application portal hosted on greenhouse where you can submit your application directly.
When was the Back-End Software Engineer (Java/Kotlin) job at externaljobboards posted?
This Back-End Software Engineer (Java/Kotlin) position at externaljobboards was posted on May 28, 2026. Apply as soon as possible — early applications are often reviewed first.
Back-End Software Engineer (Java/Kotlin)
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