Backend Developer (Java)

Link Group • JavaScript • SQL • Java • 2 months ago
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Salary
$58k – $71k per year
Location
In office (Warsaw)
Seniority
Middle · 4+ years exp
Employment
Full-Time
Overview
Company
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Profile match

Link Group

Link Group is a Poland-based IT services and consulting company that builds tech teams, provides managed services, and delivers software and cloud solutions. It is headquartered in Warsaw and was founded in 2016.
linkgroup.co • HQ: Warsaw, Poland • Blockchain & Crypto • Cybersecurity • Information Technology • 51-200 employees • Est. 2016

Key Responsibilities

  • Core Backend Development: Designing and developing robust, scalable, and high-performance server-side applications using Java and the Spring Boot framework.

  • Database Management: Designing efficient database schemas, writing optimized queries, and managing data persistence using Hibernate and MS SQL.

  • API Design & Integration: Building, integrating, and maintaining secure RESTful and SOAP web services (WebApi, WCF) to ensure seamless communication between systems.

  • Search Optimization: Implementing and tuning efficient search and indexing solutions utilizing ElasticSearch.

  • Code Quality & Mentorship: Writing clean, maintainable, and well-tested code while participating in code reviews to ensure alignment with industry best practices.

Requirements

  • Experience: Minimum 4 years of professional experience in backend development with a strong focus on the Java ecosystem.

  • Frameworks & ORM: Deep understanding and hands-on experience with Spring Boot and Hibernate.

  • Databases & Search: Practical knowledge of MS SQL and experience with ElasticSearch or similar search engines.

  • Web Services & Formats: Proficiency in developing APIs (REST/SOAP) and working comfortably with JSON and XML data formats.

  • Front-End Basics: General understanding of web technologies (HTML, CSS, JavaScript) to effectively collaborate with front-end teams.

  • Tools & Version Control: Strong command of Git and a solid understanding of CI/CD workflows (e.g., Jenkins/TeamCity, Docker).

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