Senior Java Developer

Job title: Java Developer (Mid Level or Senior)

Office location: Belgrade with Hybrid working

About the role and the Team:

The role is responsible for designing, developing, testing, and maintaining backend services for internally developed systems while integrating with third-party solutions. It involves troubleshooting complex issues, optimizing system performance, and contributing to architecture discussions. The Senior Developer will collaborate closely with front-end, QA, and Digital Innovation teams while also mentoring junior developers. They will take technical ownership of specific features or modules, ensuring best practices and high-quality standards are followed.

What will you be doing?

• Develop, test, and implement software solutions, ensuring high performance and scalability.
• Test, maintain, refactor, and optimize existing code to improve functionality, security, and efficiency.
• Conduct root cause analysis of issues, troubleshoot, and resolve complex bugs.
• Perform code reviews and provide constructive feedback to improve team code quality.
• Collaborate with project managers, solution designers, QA, and DevOps to ensure smooth delivery.
• Identify and recommend system improvements related to performance, security, and stability.
• Stay updated with the latest industry trends and technologies to propose innovative solutions.
• Mentor junior developers, share best practices, and support team skill development.

What we are looking for:

• University level education in computer science or similar development
• Any additional development certifications or courses
• Solid database knowledge, relational and/or non-relational (MySQL preferred)
• Experience with Hibernate and Spring
• Linux knowledge (Ubuntu Bash/Shell Scripting)
• Fluent in English
• Experience with Apache and Tomcat (Desirable)
• Experience with containerised and cloud deployment (AWS, Google Cloud, Azure) -  (Desirable)

Why work for us?

We're in your corner and our vision is to be the UK's most loved and desired broadband provider, that shows the way broadband is done!

Awarded Broadband Provider of the Year 2023 Uswitch Telecoms Awards, as voted for by 20,000 customers, plus Fair Terms Gold Award 2023. We're also very proud to have been awarded Great Place to Work Certification (2022-23) and UK's Best Workplaces for Wellbeing (2022)

In our Belgrade office, we work with our UK colleagues in a shared mission: to gigabit Britain. Our office started up in 2013 with what was then 20 developers, now we're more than 700 people and about to move into our brand-new offices. Do you want to be a part of our next adventure?

Some of our key Benefits:

• Competitive salary
• Global Remote working for up to 2 week per year for those who are able to work remotely
• 25 days' paid holiday increasing each year, to a max of 35
• Extra days off for your birthday, move house and volunteer
• Access to a wellbeing platform, Rezilient
• Partnership with SOS Children's Village
• Private medical insurance
• Travel discounts
• Fit Pass discount
• Technology discount
• Team sports activities
• Massages in the office
• Sweet Tuesdays

We're committed to providing equal opportunities to all applicants and employees. In fact, this is at the heart of our culture and values. We welcome applications from candidates from all walks of life.

What happens next?

• You apply (please send us your CV in English)
• We carefully review your application
• We'll get back to you — even if it's a no (for now)