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

Admin | Tower Hamlets | January 2026

Marchant Recruitment
London

Are you a proactive and efficient Admin professional looking for a rewarding school role from January 2026? Do you want to work in a Tower Hamlets school that values clear systems, strong communica…

View Details
Posted 2025-11-15

Commercial Director

fleek
London

Can you help us fix the world's most broken supply chain? The fashion industry produces over 100 billion garments a year. 60% end up in landfill, not because people don't want these clothes, but be…

View Details
Posted 2026-07-06

Economics Teacher - Highly Selective Independent School -...

Marchant Recruitment
London

A highly selective independent Mixed School in Islington, Inner London, renowned for its outstanding academic success and progression to top universities, is seeking an experienced Economics Teacher …

View Details
Posted 2025-10-16

Senior Software Engineer, Cloud, Simulation

wayve
London

The role As a software engineer for Wayve’s Simulation Technology team, you will be an expert software engineer who evolves a core component of Wayve’s simulation platform, which is used to develo…

View Details
Posted 2026-07-06

Central London NHS Occupational therapist Band 5 United Kingdom

Work Place Doctors
Central London

Central London NHS Occupational therapist Band 5 United Kingdom via Workplace Doctors on a fixed term / permanent basis. ***Start Date: Flexible ***Location: Central London NHS United Kingdom *…

View Details
Posted 2026-06-21

Area Manager

Jewells
London

London – Full-Time / Field Based Who Are Jewells? We’re redefining casual luxury in the jewellery world, blending modern, trend-driven design with premium craftsmanship. Headquartered in London,…

View Details
Posted 2026-06-27

Hospitality Assistant

Aramark
London

Job Description Aramark UK are currently recruiting two permanent Catering Assistants to join the team working at the University of Westminster, NW1 5LS. We are committed to safeguarding and pr…

View Details
Posted 2026-05-30

Music Teacher - Highly Prestigious School - Bexley

Marchant Recruitment
Bexley, Greater London

Our client is looking for a Music Teacher to work within a highly prestigious secondary school based in Bexley. * Music Teacher required to work on a full-time basis *Phenomenal Secondary School …

View Details
Posted 2026-05-28

Swedish Language Tutor | Remote Swedish Lessons |...

FindTutors
London

FindTutors is one of the leading online education platforms in the UK, connecting students with qualified tutors for personalised language learning, academic support, and skill development. We are c…

View Details
Posted 2026-05-01

UK US Tax Senior

TPF Recruitment
City of London, Greater London

UK US Tax Senior Hybrid London Are you a UK/US Tax specialist looking to join a growing successful independent tax firm in London? Do you have a strong background in UK/US Tax in a…

View Details
Posted 2026-06-13