Senior Software Java Engineer – Identity – Welwyn Garden City, United Kingdom of Great Britain and Northern Ireland

Overview

In this role you will design and build high-performance authentication APIs that power Tesco’s global customer touchpoints. You’ll drive scalable, secure, and resilient solutions in a fast-paced, high-traffic environment. You collaborate with product and engineering teams to shape requirements and steer technical direction, while mentoring peers and elevating engineering standards. This is a chance to impact new propositions across Tesco by advancing identity and access capabilities at scale.

Pay / Benefits

• Annual bonus up to 20%
• Holiday from 25 days + personal day + bank holidays
• Private medical insurance
• Maternity and adoption leave
• Paternity leave
• 24/7 virtual GP and EAP

Responsibilities

• Design, build and maintain mission-critical authentication systems with a focus on scalability, security and resilience
• Lead the technical design of complex features and initiatives aligned with strategy
• Partner with product managers and the wider team to shape requirements and deliver business outcomes
• Provide technical leadership across teams and drive key initiatives
• Drive engineering excellence through high-quality software practices
• Own production systems, lead incident resolution and root cause analysis to improve reliability and security
• Share knowledge with the wider engineering community
• Mentor and support engineers to raise engineering standards
• Contribute to recruitment and interview processes to attract talent

Key requirements

• Expert proficiency in at least one major programming language (Java preferred)
• Extensive experience designing and supporting large-scale distributed systems
• Collaborative mindset for cross-functional work
• Strong understanding of software engineering principles (SOLID, design patterns)
• DevOps mindset with production support, incident resolution and root cause analysis
• Experience leading technical initiatives across multiple teams
• Knowledge of identity and access management concepts (OAuth 2.0, OpenID Connect) would be advantageous

• collaborative
• leadership
• mentoring
• Java
• Kotlin
• Spring Boot

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