Senior Java Software Engineer (Backend)

TL;DR

Senior Java Software Engineer (Backend): Building and optimizing mission-critical high-load APIs for pricing and promotions with an accent on distributed systems architecture, scalability, and high availability. Focus on designing robust Java services, solving complex concurrency challenges, and maintaining infrastructure in a cloud-native environment.

Location: London (Hybrid office/remote work model required)

Company

A leading retail and technology organization dedicated to serving customers and communities through innovative digital shopping experiences.

What you will do

• Design and implement high-performance end-to-end systems using Java and the JVM ecosystem.
• Translate complex product requirements into well-structured, maintainable, and scalable code.
• Develop and maintain cloud-based infrastructure and automated deployment pipelines.
• Collaborate with stakeholders to refine features and drive technical excellence.
• Resolve production incidents and conduct root cause analysis to ensure system reliability.
• Mentor and support junior engineers, fostering a culture of continuous learning and collaboration.

Requirements

• Strong professional experience with Java 8+.
• Hands-on experience working with cloud platforms (e.g., Azure or AWS).
• Proficiency in working with both SQL and NoSQL database systems.
• Proven ability to design for and scale systems under heavy traffic.
• Practical knowledge of Agile methodologies (Scrum or Kanban).
• Familiarity with reactive programming paradigms.

Nice to have

• Experience with Vert.x, RxJava, or Groovy.
• Deep understanding of the CAP theorem and distributed systems design.
• Practical experience with Terraform, Kubernetes, and Kafka.

Culture & Benefits

• Comprehensive private medical insurance and free 24/7 virtual GP services.
• Generous maternity, adoption, and paternity leave packages.
• Annual bonus scheme of up to 20% of base salary.
• Flexible hybrid working model combining remote and office collaboration.
• Employee Assistance Programme (EAP) supporting mental and family wellbeing.
• Supportive, inclusive culture with opportunities for professional growth.