Lead Engineer(Architect)

dunnhumby is the global leader in Customer Data Science partnering with the worlds 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 2500 experts in offices throughout Europe Asia Africa and the Americas working for transformative iconic brands such as Tesco Coca-Cola Nestlé Unileverand Metro.

About the Role

We are looking for an Application Architect (Full Stack Front-End Heavy) to help shape and scale the future of our Retail Media SaaS platform. Our platform enables global retailers and CPGs to manage andoptimizeadvertising campaigns across e-commerce in-store and social channels.

This is a hands-on architecture role. You will design and build working solutions not just write architecture papers. Youwill define patterns produce reference implementations and partner closely with squads to ensure architecture is practical maintainable and performant in production.

You will work across the stack(roughly 60%front-end and 40% backend)leading architecture for React-basedmicrofrontendsand the supporting integration layer (BFF APIs observability and CI/CD). Your focus will be to operationalize our Front-End Foundations uphold engineering excellence and raise the bar as the platform scales.

What Youll Do

• Define and evolve architecture for our React TypeScript ecosystem built usingNxmonoreposandmicrofrontends.
• Develop reference implementations and working prototypes for host and sub-applications ensuring adoption across squads.
• Drive maturity of our design system and tokenization practices (Storybook ).
• Establishfront-end performance standardssuch asCore Web Vitals bundle optimization lazy loading accessibility and scalability.
• Strengthen front-end observability using New Relic and other tools correlating metrics with backend performance.
• Advance CI/CD automation for front-end builds ensuring linting testing and deployment are integrated into delivery pipelines.

What Were Looking For

• Deep hands-on experience in React TypeScript and component-driven architecture.
• Strong understanding ofNxmonoreposmicrofrontends and shared package ecosystems.
• Expertiseinfrontendperformance optimization accessibility and browser-level observability.
• Practical experience with (Fastifyor Express) for building and scaling BFFs.
• Working knowledge of backend technologies (.NET Core REST APIs data orchestration) to design cohesive full-stack solutions.
• Strong understanding of microservices and asynchronous integration patterns (e.g. GCP Pub/Sub).
• Proventrack recordof building and shipping architecture not just defining it.
• Strong collaboration skills with the ability to influence without authority.
• Experience in SaaS or retail media/adtechenvironments preferred.

What Will Make You Stand Out

• Delivered architecture thatscaledacross multiple squads or product domains.
• Balanced hands-on depth in front-end and integration architecture.
• Experience improving developer velocity through CI/CD andmonorepooptimizations.
• Experience implementing or scaling design systems tokens andcomponentlibraries.
• Demonstratedability to prototype benchmark andvalidatedesign decisions through working code.

Why Join Us

• Shape and scale a retail media SaaS platform powering global brands and retailers.
• Work across the stack from Reactmicrofrontendsto BFFs with modern tools and cloud-native technologies.
• Join a culture where architects code teams own outcomes and engineering excellence is celebrated.
• Drive meaningful change by operationalizing architectural standards and raising the bar for the next generation of front-end and full-stack systems.
• Apply now to design and build the architecture that powers the future of retail media.

What you can expect from us

We wont just meet your expectations. Well defy them. So youll enjoy the comprehensive rewards package youd 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.

Youll 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 dont 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 and dh Thrive as the living proof. Everyones invited.

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.

What you can expect from us

We wont just meet your expectations. Well defy them. So youll enjoy the comprehensive rewards package youd 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.

Youll 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 dont 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.

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