Onsite Marketing Manager

About the role

The Onsite Marketing Manager owns conversion performance and the marketing campaign calendar across a large catalogue, handling onsite trading, merchandising and promotional economics. You will manage a rolling 90‑day campaign calendar, issue briefs ahead of launches, and ensure seamless execution of landing pages and organic search delivery.

Key responsibilities

• Own the rolling 90‑day campaign calendar and issue briefs ahead of each launch.
• Manage the promotional P&L: set discount depth, model cost and return, and report outcomes.
• Define merchandising rules across sorting, category presentation and bundling.
• Own the conversion roadmap and experimentation pipeline.
• Lead onsite production and organic search delivery.
• Sign off landing pages ahead of every campaign launch.
• Report on conversion rate, average order value and checkout completion.

Required profile

• 4 to 6 years of experience in e‑commerce trading, merchandising or conversion optimisation.
• Demonstrated ownership of a promotional calendar across multiple channels.
• Experience designing and interpreting A/B tests.
• People‑management experience.
• Commercial numeracy across promotional margin, markdown and basket economics.
• Background in marketplace or large‑catalogue e‑commerce.

Required skills

• Experience with an experimentation platform.
• Commercial numeracy.
• Proficiency in CSS.
• Working knowledge of a CMS.
• Proficiency in HTML.