Senior Java Backend Developer

2 tygodni temu

Warszawa, mazowieckie, Polska Link Group Pełny etat 22 zł - 680 zł

We are seeking a highly skilled Senior Java Back-end Developer to join our Consulting team and contribute to a wide range of implementation projects across global clients. This role offers the opportunity to work with a modern technology stack, influence solution architecture, and introduce innovative approaches that move our projects to the next level.

As part of an agile, international team, you will collaborate with top industry leaders and work on solutions built on the latest cloud platforms and data technologies. If you are passionate about backend engineering and ready to make a measurable impact, this role is an excellent fit.


Key Responsibilities

  • Develop and maintain scalable backend services using Java, Spring, Spring Boot, and microservices architecture.

  • Design and implement secure RESTful APIs, ensuring best practices in performance and security.

  • Manage database interactions using JPA/Hibernate and work with SQL-based database engines.

  • Optimize backend performance and ensure reliability, scalability, and maintainability of the services.

  • Participate in architecture and design activities, contributing to solution design and technical decisions.

  • Collaborate closely with cross-functional agile teams, including architects, front-end developers, QA, and product owners.

  • Apply CI/CD principles, work with source control systems, and support automated deployments.

  • Ensure code quality through unit tests, integration tests, documentation, and adherence to Clean Code practices.

  • Contribute to project planning and provide input on technical feasibility and effort estimation.


Skills and Attributes for Success

  • Excellent knowledge of Java backed by 5+ years of professional experience.

  • Hands-on experience in designing, developing, and maintaining backend services in Java, Spring, Spring Boot, and microservices ecosystems.

  • Strong experience with RESTful API design and implementation.

  • Practical knowledge of SQL and experience with relational databases including JPA/Hibernate.

  • Deep understanding of performance optimization techniques.

  • Familiarity with Maven and Gradle build tools.

  • Practical experience with source code management, CI/CD, and automated deployment pipelines.

  • Proven ability to ensure high-quality code through testing and documentation.

  • Very good communication skills in English, both spoken and written.

  • Experience working in international teams and agile/Scrum environments.

  • Knowledge of Clean Code principles and unit testing best practices.


To Qualify for the Role, You Must Have

  • Bachelor’s degree in Engineering, Computer Science, or another technical field.

  • Minimum 5 years of experience in a similar IT role within a corporate environment.

  • Strong experience with Java and commonly used Java frameworks.

  • Excellent communication skills and strong problem-solving abilities.


Ideally, You Will Also Bring

  • Knowledge of Kafka or RabbitMQ.

  • Certifications such as Java, Spring, SQL, AWS, or Azure Cloud.

  • Experience with Docker, Kubernetes, or other containerization technologies.

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