Tesco Technology
Senior Software Java Engineer - Identity
Skills
17 days ago
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Important information
Contract type:
Permanent
Location:
Welwyn Garden City, UK
Work mode:
Onsite
Published on:
2 October 2026
What they need
About the role
The engineers in our team build the APIs that securely authenticate
customers across all touchpoints with Tesco around the globe: online, over the
phone, and in-store. You’ll focus on making our experiences as streamlined for
customers as possible, by exploring innovative authentication factors to
dynamically assess the risk of each individual customer session. Your work will
often be at the heart of new propositions across the Tesco Group. All of this
happens in a world where scale and resilience are critical – serving over a
billion API calls every week in only a handful of milliseconds each!
**The stack: Java, Kotlin, Spring Boot, PostgreSQL,
Cassandra, Kubernetes, Azure, and Kafka**
We are responsible for the software throughout the
lifecycle; we maintain a DevOps culture, employing continuous integration and
delivery, supporting our code through to production and beyond, as well as
being firm believers in TDD.
You will be responsible for
Designing,
building and maintaining high-performing mission-critical systems, making
architectural decisions that balance scalability, security, resilience and
operational excellence.
·
Leading the
technical design of complex features and initiatives, ensuring solutions are
scalable, resilient, secure, and aligned to our strategy.
Partnering
with product managers and the wider team to shape requirements, influence
technical direction and deliver business outcomes.
Providing
technical leadership across teams, leading key initiatives and influencing
technical direction.
Driving
engineering excellence through high-quality software development practices.
Taking
ownership of production systems, leading incident resolution and root
cause analysis, and driving improvements to enhance reliability, security
and performance.
Sharing
knowledge with the wider engineering community.
Mentoring
and supporting engineers and helping raise engineering standards.
Contributing
to recruitment and interview processes. Helping us to attract, assess and
develop engineering talent.
You will need
Expert
proficiency in at least one major programming language (Java preferred).
Significant
experience designing, building and supporting large-scale distributed
systems.
A
collaborative mindset and the ability to work effectively within a
cross-functional team.
Strong
understanding of software engineering principles (such as SOLID, design
patterns) and how to apply them to create well-structured, maintainable
software.
A
DevOps mindset, with good experience of supporting production systems,
resolving incidents, and performing root cause analysis.
Experience
leading technical initiatives and influencing engineering decisions across
multiple teams.
·
Strong
understanding of identity and access management concepts, such as OAuth 2.0 and
OpenID Connect (OIDC), would be advantageous.
Whats in it for you? We’re all about the little helps. That’s why we make sure our Tesco colleague benefits package takes care of you – both in and out of work. Click Here to find out more!
Annual bonus scheme of up to 20% of base salary.
Holiday starting at 25 days plus a personal day (plus Bank holidays).
Private medical insurance.
26 weeks maternity and adoption leave (12 months service required at the qualifying date) at full pay, followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay, we also offer 6 weeks fully paid paternity leave.
Free 24/7 virtual GP service, Employee Assistance Programme (EAP) for you and your family, free access to a range of experts to support your mental wellbeing.
The above information is a shortened summary, refer to our policies for full details About Us You might know us as a supermarket, technology company or even for our award-winning mobile network. Truth is, we’re all of those things, and much more. Our colleagues work with one goal in mind, helping to make every day a little better for our customers, colleagues and communities all over the world. No two customers are the same, neither are our colleagues.
At Tesco, we champion a balance that lets you thrive both in and out of work. Spend 60% of your week collaborating with colleagues at our office locations or local sites and the rest remotely. Whether you're just kicking off your career, juggling passions, or navigating big life events, we're here to support you. We always welcome a conversation about flexible working, so talk to us throughout your application about how we can support.
We're proud to be an accredited Disability Confident Leader, where everyone’s welcome. That’s why we commit to providing a fully inclusive and accessible recruitment process. If you need support with your application, click here for more information. And if you're interested in joining our team but don't tick every box, don't let that hold you back from applying.
When you join us in this role, you'll be employed by Tesco Stores Limited, the Tesco legal entity responsible for your employment.
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