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Software Development Engineer III - NodeJs (Backend)

Job Reference tesco/TP/13674520/871896

Number of Positions:
Contract Type:
Welwyn Garden City
Closing Date:
Job Category:
Business Unit:
GB Head Office

What’s in it for you

We’re all about the little helps. That’s why we give our wonderful colleagues bags of benefits. Including wellbeing services, an award-winning pension scheme and much, much more, our colleague reward package keeps on giving. And helps make every day a little better for you and your family. These include but are not limited to:

  • Annual bonus scheme of up to 20% of base salary
  • Holiday starting at 25 days plus a personal day (plus Bank holidays)
  • Buy holiday salary sacrifice scheme (for salaried roles)
  • Private medical insurance
  • Retirement savings plan - save between 4% and 7.5% and Tesco will match your contribution
  • Life Assurance - 5 x contractual pay
  • 26 weeks maternity and adoption leave (after 1 years’ service) at full pay, followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay, we also offer 4 weeks fully paid paternity leave
  • The right to request flexible working from your first day with us
  • 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
  • A Colleague Clubcard for you & a family member (after 3 months of service), giving you access to lots of discounts in-store & online
  • Great colleague deals and discounts, saving you money on everyday purchases, eating out and utility bills for the home
  • Access to our colleague networks providing a space for colleagues to come together from a range of backgrounds. For more information about our colleague networks please click here
  • Opportunities to get on - take advantage of our ongoing learning opportunities and award-winning training, to help you achieve the job and career you want

Click Here to read more about the full range of benefits we have available for our colleagues

About the role

About the Team

Tesco Labs is Tesco Technology’s research and development team. Based in both the UK (Welwyn Garden City) and in Central Europe, the team was conceived to shine a light on future opportunities and challenges for Tesco. Working both independently and with start-ups, enterprise partners, and other teams in Tesco Technology, Labs is a trusted source for emerging technology and is focused on prototyping and testing new ideas in areas that could significantly impact customers and the business in the future.

We develop full-stack solutions for platforms including web, desktop, mobile & tablet (both iOS and Android), wearables, mini-computers and microcontroller devices, creating end-to-end solutions including cloud-hosted or on-premise backend services when required.  We architect in a service-oriented way where appropriate, investigating new development tools, languages, frameworks, and libraries to enhance or speed up the creation of our solutions along the way.

You will be responsible for

As an engineer in Tesco Labs, you will initially focus on refining prototype and trial products to productionise them, improving on their resilience, performance, scalability, and feature set.  You’ll engage closely with our business teams and other technology colleagues to ensure that we have a robust, viable product that has been tested and proven.

Being in a research lab environment you’ll be an early adopter, maintaining a good knowledge of the latest technologies and devices (both consumer and business), keeping abreast of technological developments, and looking for opportunities to use those new technologies to benefit customers or colleagues. 

You’ll need to be a great coach, sharing your knowledge amongst other team members, and a first-class communicator, driving conversations with stakeholders at all levels.

Key Responsibilities:


  • Working with our product, research, and program teams to ideate, define propositions, and define how success will be measured
  • Translating requirements into tasks & code
  • Use your knowledge of the required languages and frameworks to lead the creation of everything from proof of concepts to complete systems
  • Supporting both development and production systems, resolving incidents, and performing root cause analysis
  • Sharing knowledge within the team and the wider engineering community

You will need

Experience relevant for the job:

  • 5+ years of experience as a JavaScript & Node.js back-end software developer
  • Good knowledge of the full development stack, including databases & APIs
  • Experience working with large volumes of data, understanding data structures and how to combine, validate, and transform them
  • Experience working with microservices
  • Experience with one or more cloud hosting platforms
  • Experience with DevOps and CI/CD
  • Knowledge of good security hygiene & OWASP principles
  • Exposure to front end web development would be an advantage

Skills relevant for the job: 

  • A passion for technology, thinking differently and trying new things
  • A positive and robust mental attitude with the ability to handle setbacks
  • Ability to work in a fast-paced, dynamic, and rapidly changing environment
  • Strong initiative, with ability to research new technologies and demonstrate and how they can benefit our business
  • Great communication and presentation skills, ability to speak to stakeholders at all levels
  • Problem solving, analysis and computational skills
  • Customer focus
  • Innovative approach to problem solving



About us

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.