Senior Software Development Engineer (.Net/C#)

Tesco
London

The payments service team are the heart of Tesco Technology, serving 28 million+ shoppers in the UK and abroad. We deliver services that reliably manage payments at global scale, 24 hours a day every day. We also provide capabilities that detect and prevent fraud and build upon innovative technologies to reduce loss. 100M+ transactions and billions of events per day, a billion pounds every week.

At the core of our operation are the APIs that handle a variety of payment methods including cash, card and gift card across stores, at our fuel stations and online. We also support wallet behaviours, repeat payments, refunds and identity checks.

As a Senior Software Developer at Tesco, you are responsible for the entire development and support process for a software programme. Your applications make previously sophisticated tasks simple with the impact ranging from saving time, effort or money to re-defining normal. As you might expect, the role focuses on day-to-day code writing however, you'll also get to lead on design and architecture as well as help mentor and develop those around you in the team!

If you like to work on high-impact business-critical systems, then this could be the team for you!

The stack; .NET/C#, Cassandra, Docker, HAProxy, Azure DevOps. TDD and a 'you build it, you run it' DevOps approach are also key parts of our engineering culture. Automation is a key area of focus for us. Our scale and workloads demand that we continuously improve our approaches to testing and deployment.

• Using your in-depth knowledge of .Net and the tool ecosystem to develop and implement scalable frontend systems.

• Producing test-driven features and demonstrating your familiarity with the TDD cycle.

• Applying your understanding of software design principles to build well structured, maintainable systems.

• Working effectively with product stakeholders to communicate and translate needs into product improvements.

• Breaking down work so we can deliver value incrementally and manage risk on larger projects

• Facilitating group discussions on system design and working with Product Managers to drive value.

• Supporting production systems, resolving, and learning from incidents.

• Sharing knowledge with the wider engineering community.

• Mentoring and developing others around you.

• Producing proof of concepts to evaluate new tools.

• Experience using .Net/C# with an eagerness to take on new technologies.

• Experience with both SQL/NoSQL databases.

• Experience with cloud platform(s) (e.g. AWS, Azure, etc.)

• Experience of working in agile environments and TDD.

• Excellent interpersonal skills

• Experience with Ecommerce payment systems would be a nice to have but is not crucial.

Our vision at Tesco is to become every customer's favourite way to shop, whether they are at home or out on the move. Our core purpose is ‘Serving our customers, communities and planet a little better every day’. Serving means more than a transactional relationship with our customers. It means acting as a responsible and sustainable business for all stakeholders, for the communities we are part of and for the planet.

We are proud to have an inclusive culture at Tesco where everyone truly feels able to be themselves. At Tesco, we not only celebrate diversity, but recognise the value and opportunity it brings. We're committed to creating a workplace where differences are valued, and make sure that all colleagues are given the same opportunities. We’re proud to have been accredited Disability Confident Leader and we’re committed to providing a fully inclusive and accessible recruitment process. For further information on the accessibility support we can offer, please click here.

We’re a big business and we can offer a range of diverse full-time & part-time working patterns across our many business areas, which means that we can find something that works for you. We work in a more blended pattern - combining office and remote working. Our offices will continue to be where we connect, collaborate and innovate. If you are applying internally, please speak to the Hiring Manager about how this can work for you - Everyone is welcome at Tesco.
Posted 2026-01-09

Recommended Jobs

Teaching Assistant - Secondary Academy

Marchant Recruitment
London

A well-regarded secondary academy in London is seeking a caring and committed Teaching Assistant to join its support staff team. The Role You will work closely with teaching staff to support …

View Details
Posted 2025-12-18

Civil Fraud/Commercial Litigation 12 month FTC

Michael Page
City of London, Greater London

Manage and oversee complex civil fraud and commercial litigation cases. Provide expert legal advice and guidance to clients. Draft and review legal documents, ensuring accuracy and compliance. …

View Details
Posted 2026-01-07

Year 4 Teacher | Lewisham

Marchant Recruitment
London

A forward-looking primary school in Lewisham is seeking a confident and creative Year 4 Teacher to start January 2026. The Year 4 Teacher will teach well-planned sequences across English, mathematics…

View Details
Posted 2025-11-29

ENFORCEMENT SUPPORT OFFICER

Lewisham Council
Lewisham, Greater London

Job Category : Admin / Clerical Location : Laurence House – Fourth Floor, Lewisham Council Hours Per Week : 35.00 Start Date : Immediate Start Start Time : 11:00 End Time : 19:00 Sal…

View Details
Posted 2025-09-10

Senior Service Engineer

AWC STAFF SERVICES LTD
London

We are looking for an experienced Senior Engineer to work as a member of our client's Fire & Security Systems Operations Field service team. You'll ensure effective delivery of PPM, Reactive calls and…

View Details
Posted 2026-01-21

Assistant Project Manager - Property

Sephora
London

Sephora is seeking an Assistant Project Manager - Property in London to oversee new store and office openings across the UK. This role involves strategic planning, coordination with construction partn…

View Details
Posted 2025-12-21

Band 5 - Intensive Care Unit Nurse (ITU) - Chelsea

Pulse
London

Intensive Treatment/Therapy Unit Nurse (ITU) Banding: 5 Location: Chelsea Rate: £20.00 – £32.00 per hour  Are you an experienced ITU nurse looking for new challenges and rewarding opportunit…

View Details
Posted 2026-01-27

Reception Teacher

Qualiteach Ltd
Southwark, Greater London

Reception Teacher - Southwark - MPS/UPS (depending on experience) - Full Time - ASAP Start - Primary School * Reception Teacher required for a primary school * Reception Teacher required ASAP * …

View Details
Posted 2026-01-21

Network Engineer (IT)

CGI
London

CGI is looking for an experienced Network Engineer to help shape the secure, scalable, and future-ready network architectures that enable mission-critical outcomes across our Space, Defence and Intell…

View Details
Posted 2025-11-25

Manager, Accounting

Neon
London

GAQ127R102 Mission We are looking for an Accounting Manager to join our London hub and act as a Regional Controller for a portfolio of our diverse international subsidiaries. Reporting to the Di…

View Details
Posted 2025-12-30