Senior Software Engineer - Service Security & Communication

Hours: 36

Salary: Competitive

Location: London EC1R 5AR

United Kingdom

Apply by: 27/05/2022


Senior Software Engineer - Service Security & Communication

London EC1R 5AR

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About the role

The mission of the Service Security & Communication team is to provide secure and resilient inter-service communication, management of secrets and protection of sensitive data, across Tesco.

More specifically, our areas of responsibility include:

  • Resilient and secure inter-service communication via service mesh and mTLS
  • Desensitising secrets and data via encryption or signing
  • Secure management of secrets via rotation and centralised management
  • Removal of secrets via workload identities i.e. SPIFFE

We build and operate a set of cloud-native services, infrastructure and CLIs. Tesco’s large footprint means that our systems operate at vast scale and our clients require > 99.9% availability.

We obsess about system operability and as such focus heavily on observability, fully automated deployments, continuous improvement and refinement, to minimise support costs. We practice continuous integration and delivery which allow us to deliver business value frequently while minimising risk.

Our microservices use ReactiveX Java and are deployed to Kubernetes on AWS and Azure. We leverage a number of cloud services such as DynamoDB, Cosmos DB, S3, Blob Storage, KMS and Key Vault. Our CLIs are built using Go allowing us to cross-compile to multiple operating systems. In addition, we also use Python, Bash and Terraform extensively in order to achieve a high level of automation.

The culture at Tesco Technology values above all else autonomy and full end-to-end ownership of solutions, thus empowering teams to build and deliver software as effectively as possible.

You will be responsible for

As a Senior Software Engineer on the Service Security & Communication team, your primary responsibility is to design, build and run technology solutions to deliver valuable outcomes to our customers, colleagues and partners. You’ll be working alongside 6-8 engineers and a software development manager.

Key Responsibilities:

  • Designing and implementing cloud-native services using Java and/or Golang
  • Building infrastructure as code using Terraform, Python & Bash
  • Running and operating distributed systems
  • Testing and automating everything 
  • Providing technical leadership and driving delivery
  • Coaching and developing fellow engineers

You will need

Experience relevant for this job:

  • Experience in Java and/or Go, Terraform, Linux
  • Building microservice architectures on Kubernetes in the cloud
  • Building and operating distributed systems at scale
  • Experience working with partner and stakeholder teams on creating complex solutions

Skills relevant for the job:

  • Written and verbal communication skills.
  • Problem-solving, analysis and computational skills.
  • A customer focus.
  • Innovative approach to problem solving.

What’s in it for you

  • An annual bonus scheme which you can achieve up to 15% of base salary
  • Colleague Clubcard (including a 2nd card for a family member) after 6 months service with 10% off most purchases at Tesco
  • Holiday starting at 25 days plus a personal day
  • A retirement savings plan - 4%-7.5% contribution rate
  • Life Assurance - 5 x contractual pay
  • Buy As You Earn Scheme which allows you to buy Tesco shares and save tax after 3 months of service
  • Save As You Earn Scheme which gives you the opportunity to save direct from your pay for three or five years with the option of using your savings to buy Tesco shares at a discounted price after 1 year of service
  • Access to Tesco Learning and Development Academy, Safari Books https://www.safaribooksonline.com and Pluralsight Technology Learning Platform https://www.pluralsight.com
  • Deals & Discounts through Tesco including Tesco Mobile & Tesco Bank
  • Deals and Discounts through many other external businesses
  • Cycle to work and Car Share Schemes

About us

Our vision here 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 Britain's shoppers a little better every day’. Our business was built with a simple mission – to be the champion for customers, helping them to enjoy a better quality of life and an easier way of living. This hasn't changed. Customers want great products at great value which they can buy easily and it's our job to deliver this in the right way for them. In the UK, we serve some 66 shoppers every second, so it's our goal to ensure every one of those customers experiences just a little better service on each visit.


At Tesco, inclusion means that Everyone’s Welcome. Everyone is treated fairly and with respect; by valuing individuality and uniqueness we create a sense of belonging.
Diversity and inclusion have always been at the heart of Tesco. It is embedded in our values: we treat people how they want to be treated. We always want our colleagues to feel they can be themselves at work and we are committed to helping them be at their best.


Across the Tesco Group we are building an inclusive workplace, a place to actively celebrate the cultures, personalities and preferences of our colleagues – who in turn help to build the success of our business and reflect the diversity of the communities we serve.

Application process

Our office application process varies depending on the role and the level of experience needed.

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