Principal Engineer in London

MOO brings brands to life in a sustainable way, with a range of remarkable print and merchandise products. We combine design, technology, manufacturing and service, so that people can connect in memorable ways. Not online but out there, in real life. We started in 2004. Since then we’ve built an award-winning and much-loved brand, with customer satisfaction and Trustpilot ratings that make most businesses want to give up and hire an army of review bots. We’ve got half a million customers, mostly small and medium businesses in North America, the UK, and Europe – businesses that, like us, get all excited about putting something real and beautiful into people’s hands.

Today, we’re more than 400 people with our global HQ in London, UK, while we also have premises in Dagenham. In the US, you’ll find us in Boston, MA, as well as East Providence, RI and Denver, CO and with our most recent office expansion in Cape Town South Africa. MOO's engineering teams span the physical and digital worlds. Every order we take is manufactured after it is paid for, so the journey from "buy" to "delivered" runs through a factory as well as a database. That is true of the storefront, our design and customisation tools, cart, checkout and payments, business accounts, and equally true of order orchestration, manufacturing, fulfilment, shipping and the tooling our Customer Service and Operations teams use.

As we scale, we're bringing together two ecommerce platforms while also experimenting with our customers' browsing experiences to support growth. On the other side of the order, we're consolidating tooling for Customer Service and Operations, improving data visibility across the order journey, integrating new carriers, and increasing manufacturing capacity while protecting customer experience and margin. We're also changing how we build, with AI-assisted development now part of everyday engineering practice here.

You'll partner closely with engineering teams across our entire ecosystem, product leadership, and our Platform group, to deliver a coherent, scalable architecture and unblock cross-team delivery. Bring deep technical leadership across MOO's ecommerce ecosystem, from storefront and checkout through to delivered. You'll support in setting the architectural direction for that journey and enable multiple teams to move quickly and efficiently.

Responsibilities:

• Domain leadership and technical strategy: Work with other engineering leaders to define the architectural roadmap across the whole order journey, spanning storefront, design and customisation tooling, checkout and payments, order orchestration, manufacturing, fulfilment, shipping and Customer Service tooling.
• Scale and reliability: Lead cross-team initiatives that increase throughput and reduce cost-to-serve. Get us through peak trading without heroics, from traffic spikes at the front of the funnel through to production release at the back, and make sure we know in advance what would break first.
• AI-assisted development: Set the standard for how engineers across your estate use AI tooling day to day.
• Data and tooling coherence: Assist in enabling a 360-degree order view and actioning capabilities for Customer Service and Operations by standardising data pipelines and surfacing the right aggregates.
• Governance, facilitation and mentorship: Mentor Staff and Senior Engineers across all of the engineering department.

About you:

• Proven track record shaping architecture and delivery for complex ecommerce estates at scale.
• Expert at designing service and event contracts, data flows and reliability patterns.
• A considered view on where AI-assisted development earns its place in professional engineering.
• Able to align Operations, Customer Service, Product and Engineering.
• Able to balance migration with tactical scaling work in live systems.

Nice To Have's:

• Experience with manufacturing execution systems, batching and scheduling algorithms, and warehouse or dispatch integrations.
• Prior work migrating ecommerce platforms and improving Customer Service agent experience.
• Hands-on experience introducing AI-assisted development across an engineering organisation.

What’s it like to work at MOO? MOO’s the kind of workplace where you can really be yourself. We want to help you grow in your career and set you up for success – while also recognising the importance of a healthy work/life balance.

Diversity Statement: We are working hard to create a representative, inclusive and super-friendly team, because we know that different experiences, perspectives and backgrounds make for a better workplace.