Java Developer

About Webellian

Webellian is a well-established Digital transformation and IT consulting company committed to creating a positive impact for our clients. We are driven by shared values, strong principles, and a passion for innovative and disruptive technologies. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy.

About the position

The Senior Back-End Developer will design, develop, and maintain scalable back-end systems using Java Spring Boot. The role focuses on building secure REST APIs, implementing data persistence with Hibernate/MySQL, and ensuring robust CI/CD processes. The developer will collaborate with cross-functional teams to deliver high-quality software that meets performance, security, and reliability standards.

Key responsibilities

• Design, develop, and maintain back-end applications using Java Spring Boot and Spring MVC.

• Implement and maintain RESTful APIs and ensure secure and efficient data exchange.

• Develop and optimize data persistence layers using Hibernate and MySQL.

• Ensure application security, reliability, and performance best practices are followed.

• Collaborate with front-end developers, DevOps, and QA teams to deliver end-to-end solutions.

• Participate in CI/CD processes to automate build, test, and deployment workflows.

• Troubleshoot and resolve back-end issues, performance bottlenecks, and security vulnerabilities.

• Maintain technical documentation and contribute to knowledge sharing across the team.

Competencies

• 3-6 years of experience in back-end development using Java, Spring Boot, and Spring MVC.

• Strong experience with Hibernate and relational databases, preferably MySQL.

• Proven experience designing and implementing secure REST APIs.

• Solid understanding of CI/CD pipelines and automation tools.

• Knowledge of application security best practices.

• Strong problem-solving, analytical, and debugging skills.

• Ability to collaborate effectively across cross-functional teams.

• Excellent organizational skills and attention to detail.

• Fluency in English.

What we offer

• Contract under Polish law: B2B or Umowa o Pracę

• Benefits such as private medical care, group insurance, Multisport card

• English classes are available

• Hybrid work (3 days/week on-site) in Warsaw (Mokotów)

• Opportunity to work with excellent professionals

• High standards of work and focus on the quality of code

• New technologies in use

• Continuously learning and growth

• International team

• Pinball, PlayStation & much more (on-site 🤫)