In-house Reseller / Ecommerce Manager in London

Listing Monster AI is a fast-growing software startup transforming the online resale industry. We’re building the operating system for resellers — a single platform to source, list, automate, and manage resale operations across multiple marketplaces. Since launching in 2023, we’ve grown rapidly and now partner with hundreds of resellers, from large charities to side-hustlers. This year alone, we’re on track to list over 2 million items.

Resale is uniquely complex: every item is different, workflows are manual, and profitability is constrained by time, space, and expertise. We remove these bottlenecks with an AI-first approach, enabling resellers to operate efficiently and scale profitably. To support our next phase of growth, we’re launching our own in-house resale operation.

This operation will:

• Bring us closer to real customer workflows and challenges
• Generate thought leadership and customer education content
• Sharpen our product through live, real-world R&D
• Set the standard for best-in-class, data-driven resale operations

Role Overview:

Run the operation: You’ll own the day-to-day running of Listing Monster AI’s in-house resale business. You’ll be hands-on with the full resale workflow — sourcing, photography, listing, merchandising, and dispatch — using Listing Monster AI as the core operating system.

Content creator: By operating at a high standard and sharing how the business runs across media channels, you’ll showcase AI-powered resale operations and position Listing Monster AI as the leading authority globally in the space.

Improve the product: You’ll sit at the intersection of live trading and product development, testing new features, spotting issues, and feeding clear, actionable insights back to the team to directly shape the future of the platform.

Build from scratch: This is a high-ownership role in a fast-moving environment, with real influence across operations, product, and marketing. You’ll help define how modern, AI-powered resale businesses are run.

Key Responsibilities:

• Own the day-to-day operation of Listing Monster AI’s in-house resale business, working in-person at our London Waterloo location.
• Create and share content (predominantly video) showcasing how the operation is run and what it achieves.
• Manage the resale workflow end-to-end: (1) Source stock; (2) List products efficiently using Listing Monster AI’s platform; (3) Merchandise and manage active listings to maximise sell-through; (4) Run warehouse and dispatch processes.
• Work towards agreed targets: both operational and trading, and continuously optimise performance.
• Test new product features, workflows, and tools in a live trading environment.
• Provide clear, actionable feedback to the product and development teams.
• Adapt processes as the platform and operation evolve, helping to define best practice as you go.

Key Traits and Skills:

• Entrepreneurial and proactive mindset.
• Strong communicator who is comfortable appearing on camera to share insights publicly.
• Hands-on and efficient operator able to perform end-to-end ecommerce workflows.
• Experience or strong interest in online resale, ecommerce or marketplace businesses.
• Organised, data-driven and comfortable working to targets.
• Tech-savvy, confident adopting and testing new tools and software.

Qualifications required:

• Familiarity with the online resale industry is an advantage.
• Strong numerical and analytical skills.
• Full UK driving license.
• Right to work in the UK.

Why Join Us?

• Join a fast-growing startup operating at the frontier of AI and ecommerce.
• Learn from experienced founders who have scaled and exited businesses.
• Be part of a tight-knit, fun, collaborative, and ambitious team.
• Take ownership of meaningful work with real impact — and with huge room for professional growth.
• Earn competitive compensation aligned to your experience and contribution.