Product Engineer (Senior Forward Deployed) in London

dunnhumby is the global leader in Customer Data Science, partnering with the world’s most ambitious retailers and brands to put the customer at the heart of every decision.

We combine deep insight, advanced technology, and close collaboration to help our clients grow, innovate, and deliver measurable value for their customers.

dunnhumby employs nearly 2,500 experts in offices throughout Europe, Asia, Africa, and the Americas working for transformative, iconic brands such as Tesco, Coca-Cola, Nestlé, Unilever and Metro.

dunnhumby Network Alliance dna (dunnhumby Network Alliance) is an open, collaborative Retail and Commerce Media service designed to unify a fragmented market and unlock growth for brands, agencies and retailers.

Operating as a neutral layer across multiple retail partners, DNA brings together audiences, inventory and intelligence enabling a single, simplified point of entry to cross-retailer media at scale.

Built in partnership with Kevel and powered by dunnhumby’s data and expertise, DNA connects brand and performance across the full customer journey, delivering more transparent, consistent and effective outcomes in an increasingly complex media landscape.

The Role

Build in the field.

You will embed with brands, agencies and retail partners and ship working software against their real data and real workflows, taking dna from prototype to production and finding product-market fit at pace.

• What You'll Be Doing
• Embed with retailers, brands and agencies to scope the actual problem, then ship production-ready code against their real data and systems.
• Prototype fast and favour working software over slideware, testing hypotheses and de-risking decisions before wider build-out.
• Build and integrate core platform components: APIs, services, data pipelines and user-facing workflows across dunnhumby, Kevel and retailer environments.
• Own what you build end-to-end, including release, deployment, monitoring and issue resolution once it is live.
• Turn field learning into product direction, identifying the repeatable patterns worth productising instead of rebuilding partner by partner.
• Use AI-assisted engineering tooling to raise both output and quality, and help shape how the team works as it grows.
• What You'll Bring
• Strong software engineering and system design, with production experience in Python or similar, plus APIs, microservices and cloud (AWS, GCP or Azure).
• Experience with large-scale data systems and pipelines, and comfort moving between backend, data and front-end work.
• A track record of customer-embedded or client-facing delivery that you have shipped inside someone else's environment, not only your own.
• High ownership and comfort with ambiguity: you scope it, build it, deploy it, and stay accountable when it breaks.
• Strong product judgement, balancing speed, quality and long-term maintainability.
• The ability to explain technical decisions clearly to commercial, retailer and partner audiences.
• What you can expect from us

We won’t just meet your expectations.

We’ll defy them.

So you’ll enjoy the comprehensive rewards package you’d expect from a leading technology company.

But also, a degree of personal flexibility you might not expect.

Plus, thoughtful perks, like flexible working hours and your birthday off.

You’ll also benefit from an investment in cutting-edge technology that reflects our global ambition.

But with a nimble, small-business feel that gives you the freedom to play, experiment and learn.

And we don’t just talk about diversity and inclusion.

We live it every day – with thriving networks including dh Gender Equality Network, dh Proud, dh Family, dh One, dh Enabled and dh Thrive as the living proof.

We want everyone to have the opportunity to shine and perform at your best throughout our recruitment process. Please let us know how we can make this process work best for you.

Our approach to Flexible Working

At dunnhumby, we value and respect difference and are committed to building an inclusive culture by creating an environment where you can balance a successful career with your commitments and interests outside of work.

We believe that you will do your best at work if you have a work / life balance.

Some roles lend themselves to flexible options more than others, so if this is important to you please raise this with your recruiter, as we are open to discussing agile working opportunities during the hiring process.

For further information about how we collect and use your personal information please see our Privacy Notice which can be found

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