Senior Backend Engineer / Senior Software Engineer (Backend), Java Engineer, Golang (Go) Engineer, API/Distributed Systems Engineer

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

Senior Backend Engineer (Java &

Golang)

Location & working arrangement

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).

Intro

We’re looking for a Senior Backend Engineer to help shape the future of our digital

experience at Holland & Barrett.

You’ll join our Online Customer Experience (OCX) team at an exciting moment. We’re

moving beyond a major transformation and into building new, scalable propositions that

help more people make health and wellness a way of life.

This is a role for someone who enjoys solving complex problems, influencing technical

direction and supporting others to grow — while delivering reliable, high-quality software

that makes a real difference.

What you’ll be doing

Lead the design and delivery of scalable backend systems across key product areas

Build reliable, high-quality services that power our web and mobile experiences

Collaborate with product, QA and UX to deliver meaningful outcomes for customers

Mentor engineers and support their technical and professional development

Take ownership of technical decisions, balancing immediate needs with long-term

impact

Communicate complex technical concepts clearly to a range of audiences

Champion best practices in security, performance and system reliability

Continuously improve ways of working, exploring new tools and technologies

What you’ll bring

Strong experience with Java (17+) and Spring Boot (or similar frameworks)

Solid experience with Golang and building production-grade services

Deep understanding of APIs, REST and distributed systems

Experience working with SQL and databases such as Postgres or Oracle

Experience with AWS and cloud-based architectures

Familiarity with CI/CD pipelines and modern engineering practices

A proactive approach to monitoring, troubleshooting and improving performance

Clear communication skills and a collaborative mindset

Nice To Have

Experience with Kubernetes, Helm or container orchestration

Familiarity with tools such as Datadog, Prometheus or Grafana

Exposure to Python scripting

Benefits

33 days holiday (including bank holidays), plus holiday purchase scheme

Private medical insurance - single cover

24/7 Virtual GP access and Employee Assistance Programme

Annual free at-home health testing kit (after 6 months’ service)

Workplace pension with 5% employer contribution

Annual bonus (subject to company and individual performance) up to 10%

£50 colleague product allowance (after 6 months’ service)

25% colleague discount plus free delivery on online orders

Free Wellhub membership with access to gyms, studios and wellbeing apps

Cycle to Work scheme

Call to action

If you’re ready to build technology that helps people feel their best — and grow your career

in a supportive, forward-thinking team — we’d love to hear from you.

Apply today and help us back every body.

About Holland & Barrett

At Holland & Barrett, we’ve been trusted for wellness for over 150 years. We exist to make

health and wellness a way of life for everyone — adding quality years to life.

We combine science, expertise and care to help people support their bodies every day, in a

way that works for them.

Inclusion & accessibility statement

We’re committed to building a workplace where everyone feels they belong.

We welcome applications from all backgrounds and experiences, and we’re happy to make

adjustments to support you through the recruitment process. If there’s anything