Staff Machine Learning Engineer - Ads Bidding

Deliveroo·London, England, United Kingdomsenior

In short

→Diseñar e implementar modelos de aprendizaje automático para la transición de pagos por clic (CPC) a pagos por pedido (CPO) en anuncios.
→Trabajar en un problema de vanguardia sin playbook establecido, con autonomía técnica y liderazgo en un entorno incierto.
→Colaborar con el equipo de DoorDash EE.UU. en un modelo de trabajo global con horarios respetuosos.

No se requiere idioma específico, pero se trabajará con equipo de EE.UU. en inglés.

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What they ask for

✓Experiencia directa en economía publicitaria, subastas o teoría de subastas.
✓Conocimiento sólido en CPC optimizado, CPO objetivo, apuestas automatizadas por objetivos y ROAS objetivo.
✓7+ años escribiendo código en producción en Python.
✓Fundamentos sólidos en ranking, sistemas de recomendación o sistemas de subastas.
✓Capacidad de liderazgo autónomo en entornos ambiguos.
✓Comunicación efectiva con equipos multidisciplinarios (Producto, Comercial, DoorDash).

Don't tick every box? That's normal — your free dossier shows your gaps and how to cover them in the interview.

PythonMachine LearningRankingRecommendation SystemsBidding/Auction SystemsAd EconomicsMarketplace BiddingOptimised CPCTarget CPOTarget ROAS

Who should you write to at Deliveroo?

Your free dossier identifies the people who'd interview you — their background, what they value, and how to reach out so you stand out before applying.

Our Global Structure Deliveroo is now part of DoorDash, bringing together teams with even greater reach, scale, and ambition. Depending on your role, you may collaborate with teammates, systems, and leaders across DoorDash and Wolt. Together, we're unlocking new possibilities as one global team. Staff Machine Learning Engineer – Ads Bidding The Team The Ads ML team builds and maintains the machine learning models powering Deliveroo's advertising product — connecting consumers with relevant ads and helping merchants, grocers, and FMCG brands grow through the platform. The UK team is ~11 MLEs across ads and promotions, and collaborates closely with the US team (meetings capped at 4pm UK to protect reasonable hours). The Problem Deliveroo is migrating ads from cost-per-click (CPC) to cost-per-order (CPO) — merchants pay when an ad drives an order, not when it's clicked. This is a genuinely open, cutting-edge problem: very few companies have solved it, and there's no established playbook to follow. The exact approach is under active discussion and you'd be central to driving it. Requirements Expertise in ad economics, marketplace bidding, or auction theory Direct working experience with optimised CPC, target CPO, goal-based automated bidding, and target ROAS Strong self-driven leadership baseline — you'll be setting direction in an ambiguous space, not executing against an established one 7+ years writing production code in Python; solid ML fundamentals in ranking, recommendation systems, or bidding/auction systems A bias for simplicity and a focus on shipping work with measurable business impact Strong cross-functional communication — you'll be working closely with Product, Commercial, and the wider DoorDash team Why Join Us? At Deliveroo, you'll do work that matters—solving real-world problems in a three-sided marketplace that's constantly evolving. We're food lovers, problem solvers, community builders and more, brought together by a shared drive to make things better. Working here you can expect to: 🔧 Solve meaningful problems at real scale Work on a complex, always-on marketplace that impacts millions every day. 🌱 See your impact, fast Ship, test and improve ideas quickly in a low-hierarchy, high-ownership environment. 🧠 Grow through challenge and ownership Take on big, ambiguous problems and accelerate your career with strong support. 🌎 A culture built for builders High standards, collaboration, flexible working and continuous learning. 💰 Share in the success you help create Competitive salary and equity options, so you're rewarded for the impact you make. ➡️ Want a deeper look at how we build? Tech Blog. Diversity, Equity and Inclusion At Deliveroo, we know that a great workplace reflects the world around us and that true diversity and inclusion make us stronger, more creative, and better at what we do. We're committed to fostering an environment where everyone can do their best work and feel they belong. We believe in equality of opportunity and welcome candidates from all backgrounds regardless of age, gender, ethnicity, disability, sexual orientation, gender identity, socio-economic background, religion, or belief. If you have a disability or long-term health condition and need support to apply for one of our roles, or require any reasonable adjustments during the recruitment process, you'll have the opportunity to let us know once you've submitted your application.

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