Senior Java Engineer – Scalable Distributed Systems

Tesco Technology; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Annual bonus up to 20%

25 days holiday + personal day

Private medical insurance

Maternity and adoption leave (26 weeks

Paternity leave 6 weeks

Virtual GP and EAP support

Job summary

Tesco Technology is building a robust, internet-facing HTTP API that powers pricing and promotions across Tesco channels. The team handles high availability of a distributed system used by millions, blending in-store and cloud deployments, with modern JVM ecosystems and Agile practices.

You will design and implement end-to-end systems, translate product requirements into maintainable code, write test-driven features, and collaborate with stakeholders to shape features and improve production

Qualifications

• Proven experience with Java 8+ in production systems.
• Strong SQL and NoSQL skills for scalable data stores.
• Experience on cloud platforms (Azure, AWS, etc.).
• Ability to design and scale distributed systems.
• Familiar with Agile methodologies (Scrum/Kanban).
• Exposure to reactive programming paradigms.
• Bonus: experience in eCommerce or search systems.

Responsibilities

• Design and implement end-to-end systems using deep JVM expertise.
• Translate product requirements into well-structured, maintainable code.
• Write test-driven features and follow the TDD/BDD cycle.
• Apply SOLID principles for cohesive, scalable design.
• Design, build, deploy and maintain required infrastructure.
• Collaborate with product stakeholders to shape features.
• Support production systems, resolve incidents, and perform root cause analysis.
• Mentor engineers and promote continuous learning.
• Share knowledge across the wider engineering community.
• Prototype and evaluate new tools and technologies.

Skills

Java 8+

Cloud platforms

SQL and NoSQL

Scale systems

Agile methodologies

Reactive programming

eCommerce / search systems

Job description

Tesco Technology is building a robust, internet-facing HTTP API that powers pricing and promotions across Tesco channels. The team handles high availability of a distributed system used by millions, blending in-store and cloud deployments, with modern JVM ecosystems and Agile practices.

You will design and implement end-to-end systems, translate product requirements into maintainable code, write test-driven features, and collaborate with stakeholders to shape features and improve production