Senior Software Engineer in Test (SDET)

hackajob is collaborating with Holland & Barrett to connect them with exceptional professionals for this role.

Job Description

Senior Software Engineer in Test (Senior SDET)

Department: Omnichannel Experience (OCX)

About The Role

We’re looking for a Senior Software Engineer in Test (SDET) to help shape and elevate

quality engineering across our Omnichannel Experience (OCX) domain.

We offer hybrid working, with occasional presence at one of our Holland & Barrett offices in

London or Nuneaton for team collaboration, key meetings and events (typically once per

quarter).

This role goes beyond traditional testing. You’ll play a key part in improving how we think

About Quality Across Multiple Teams — Introducing Better Practices, Strengthening

automation, and enabling teams to deliver high-quality software with confidence.

You’ll act as a technical leader in quality engineering, working across squads to raise

standards, unblock challenges, and drive a more modern, scalable approach to testing.

What you’ll be doing

Lead and evolve quality engineering practices across multiple product teams

Design, build and improve automated testing frameworks (UI, API and service-level)

Expand testing strategies beyond end-to-end into microservices and system-level

validation

Drive a shift-left approach to quality, embedding testing earlier in the development

lifecycle

Contribute to CI/CD pipelines, ensuring quality is integrated into delivery workflows

Improve observability and monitoring to support proactive quality and faster issue

resolution

Partner with engineers, product and QA to define and implement best practices

Identify and remove blockers, enabling teams to deliver efficiently

Influence and guide teams on modern testing approaches and tooling

What you’ll bring

Strong experience in software testing and quality engineering within modern

engineering environments

Proven experience building and owning automation frameworks from scratch

Strong coding skills (e.g. Java, Kotlin, JavaScript or similar)

Experience testing across multiple layers — UI, API, and microservices

Practical experience with CI/CD pipelines and integrating automated testing into

delivery

Experience working with distributed systems and modern architectures

A strong understanding of quality beyond functional testing (e.g. performance,

resilience, observability)

Experience influencing and driving initiatives across multiple teams

A proactive, problem-solving mindset with the ability to unblock others

Ways of working

Agile environment (continuously evolving and improving)

Fully remote working supported, with optional office collaboration

Flexibility in working hours, aligned broadly to UK time zones

What success looks like

Teams adopt stronger, more consistent quality engineering practices

Automation is scalable, reliable and embedded across the development lifecycle

Quality is considered early, not just at the end of delivery

Engineers are empowered with better tools, frameworks and guidance

Delivery is faster, more stable and more predictable

Key considerations (screening focus)

Demonstrated technical leadership (without relying on people management)

Experience building and evolving automation frameworks

Evidence of improving quality beyond traditional E2E/API testing

Balanced automation approach (not manual-heavy)

Experience influencing multiple teams and driving change