Freelance Java Developer

Montash; Köln; Remote; EUR 50.000 - 80.000; Vollzeit

Zusammenfassung

A leading company in the international marketplace sector is seeking an experienced Java Developer to enhance their cutting-edge platform. You will work remotely with an agile team on a project focused on scalability and performance in the B2C space. This role involves developing REST APIs, maintaining the core Java/Spring application, and contributing to unit testing practices.

Leistungen

100% remote work

Flexibility in work hours

Challenging and impactful projects

Collaboration with an experienced team

Qualifikationen

• Experience with unit testing (JUnit, Mockito) is essential.
• Experience in developing scalable B2C applications.
• Proficiency in Java; Kotlin experience is a plus.

Aufgaben

• Collaborate to deliver high-quality solutions.
• Develop and scale the core Spring application.
• Integrate payment and logistics services.

Kenntnisse

Java

Spring Boot

Spring Data

PostgreSQL

REST APIs

Unit Testing

GitLab

Jobbeschreibung

Contract Length : 4-6 months initially (extensions possible)

Location : 100% Remote

Start Date : June / July 2025 (July start preferred)

About Us

We are developing a cutting-edge international marketplace platform that connects businesses and consumers to buy and sell refurbished phones. As part of this initiative, we are building a scalable greenfield MVP designed for global use. This is a fantastic opportunity to work with an agile team on a fast-paced and impactful project.

Role Overview

We are seeking an experienced Java Developer to join our agile development team. You will play a critical role in enhancing and scaling the MVP, focusing on the core Spring application. This includes building new features, ensuring high performance, and integrating third-party services related to payments and logistics.

Our team prioritizes clean, well-documented, and well-tested code, so a strong background in unit testing and attention to detail is essential.

Responsibilities

• Collaborate with the Product Owner, Engineering Manager, and Developers to deliver high-quality solutions.
• Develop and scale the core Spring application for a B2C marketplace.
• Work on REST APIs, integrating third-party payment and logistics services.
• Write and maintain unit tests (e.g., JUnit, Mockito) for robust code quality.
• Contribute to the documentation and best practices of the platform.

Required Skills and Experience

• Proficiency in Java (Kotlin experience or interest is a plus).
• Strong knowledge of Spring Boot , Spring Data , and Spring Framework .
• Experience with PostgreSQL databases.
• Skilled in developing and maintaining REST APIs .
• Familiarity with version control systems such as GitLab .
• Demonstrated experience writing unit tests (e.g., JUnit, Mockito).

Preferred Skills

• Experience with AWS cloud infrastructure and services.
• Knowledge of end-to-end and integration testing.
• Full-stack development experience with React .
• Prior experience working on Kotlin .

What We Offer

• A challenging and impactful project in the international marketplace domain.
• The flexibility of 100% remote work.
• Collaboration with a talented and experienced agile team.
• Opportunities to work with the latest technologies and industry best practices.

How to Apply

If this sounds like the perfect opportunity for you, please send your :

• Availability
• Day rate

We will review your application and schedule a call to discuss the position further.

Referral Program : If this role isn’t for you, refer a candidate, and if they are successfully hired, you’ll be rewarded!

Join us to make an impact in the global marketplace space!