Currency

Java Developer - Freelancer

34 - 47 USDNet per hour - B2B
Java

Java Developer - Freelancer

Java

Baraniaka 88, Poznań +4 Locations

Espeo Software

Freelance
B2B
Senior
Remote
34 - 47 USD
Net per hour - B2B

Tech stack

    Polish

    C1

    English

    B2

    Java

    advanced

    Git

    advanced

    PostreSQL

    advanced

    Polish

    advanced

    C++

    regular

Job description

Senior Java Developer

SKILLS: Java | syntax C++ | PostgreSQL | Git

B2B: PLN 125 - 175 / Hour 💰

LOCATION: REMOTE (POLAND)

START DATE: 03.11.2025

END DATE: 28.02.2026


Key Duties and Requirements: A Roadmap to Your Professional Success 🚀

Scope of responsibilities:

  • Rewrite existing system components from C++ to Java (primarily backend).

  • Understand and analyze existing C++ codebase to ensure accurate migration.

  • Maintain high code quality and compliance with the established architecture.

  • Collaborate closely with developers, analysts, testers, and the solution architect.

  • Participate in daily stand-ups, code reviews, and other team ceremonies.

  • Propose improvements to implementation and architecture when necessary.

Here’s a set of skills we require:

  • 3+ years of professional experience in Java development.

  • Strong knowledge of Java 8+ and the Spring ecosystem (Spring Boot, Spring Data, etc.).

  • Experience working with complex monolithic or distributed systems.

  • Ability to read and analyze existing code in other technologies (e.g. C++, Delphi, .NET).

  • Solid understanding of relational databases (PostgreSQL, Oracle, MySQL, etc.).

  • Proficiency with Git and build tools (Maven or Gradle).

  • Commitment to clean code principles, refactoring, and code quality.

  • Good communication and teamwork skills.

  • Polish language - minimum C1 level

Nice to have:

  • Experience with legacy system migrations.

  • Knowledge of design patterns and microservice architecture.

  • Familiarity with testing and monitoring tools (e.g. JUnit, Mockito, Prometheus).


Tech stack

    Polish

    C1

    English

    B2

    Java

    advanced

    Git

    advanced

    PostreSQL

    advanced

    Polish

    advanced

    C++

    regular

Office location

Published: 22.10.2025

Java Developer - Freelancer

34 - 47 USDNet per hour - B2B
Summary of the offer

Java Developer - Freelancer

Baraniaka 88, Poznań

Espeo Software

34 - 47 USDNet per hour - B2B
By applying, I consent to the processing of my personal data for the purpose of conducting the recruitment process. Informujemy, że administratorem danych jest Espeo Software z siedzibą w Poznaniu, ul. Baraniaka 6 (dalej jako "administrator"). Masz p... MoreThis site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.