Senior Seller Acquisition Manager (Inbound)

Who are OnBuy?

OnBuy are an online marketplace who are on a mission of being the best choice for every customer, everywhere.

We have recently been named one of the UK's fastest-growing tech companies in the Sunday Times 100 Tech list.

All achievements we are very proud of, but we don't let that go to our head. We are all laser focused on our mission and understand the huge joint effort ahead of us needed to succeed.

Working at OnBuy:

We are a team of driven and motivated people who thrive when working at pace. To succeed at OnBuy you need to take charge and fully own your responsibilities, rolling your sleeves up when needed to 'get it done'. Working at OnBuy you are surrounded by so much opportunity, but you must possess the ability to stay focused and prioritise ruthlessly. Most importantly, you will thrive in an ever-changing environment as we are constantly evolving.

At OnBuy, you're not just a number or another cog in a machine. We are creating something really special, and you have the opportunity to affect meaningful change and have your voice heard. We are a close team, who have the opportunity to learn and grow as OnBuy evolves.

About the Role

The Senior Inbound Seller Acquisition Manager is accountable for building and scaling a global inbound seller acquisition engine, covering the full journey from awareness → lead → sign-up → first activation across 21 international markets. You will own both B2B demand generation and inbound seller sign-up, ensuring we attract the right sellers through localised, high-converting experiences, while accelerating speed to first sale. This includes leading AI-powered digital marketing, trade PR, CRM, content, and funnel optimisation to deliver efficient, scalable growth.

This is a tech-savvy, data-driven role, operating across 19+ languages and leveraging AI-powered automation across LinkedIn, email, social, and PR to scale seller acquisition. You will design and run a repeatable system that delivers predictable lead and sign-up growth, balancing Cost per Lead (CPL) and Cost per Acquisition (CPA) while driving seller quality (lead scoring).

This is a critical role that owns the front door of the OnBuy Flywheel, driving continuous storytelling of our growth story and converting that into high-quality inbound seller demand. You will work closely across Onbuy to accelerate speed to first sale, ensuring outbound acquisition translates into real GMV and contribution.

Sellers are the fuel of our Flywheel. You will be the driving force that brings high-quality sellers onto the platform and enables them to start trading at pace. Through best-in-class demand generation, seamless sign-up experiences, and insight-led optimisation, you will shape how sellers discover, join, and succeed on OnBuy.

Key Responsibilities

Inbound Seller Demand Strategy

•         Own the Inbound Seller Demand strategy, delivering a scalable pipeline of high-quality inbound sellers

•         Define clear Ideal Customer Profile (ICP), targeting and channel strategy to shift from volume-led to quality-led acquisition

•         Align demand generation to GMV, contribution and seller quality outcomes

•         Establish a clear roadmap to scale seller acquisition efficiently across markets

Global Inbound Funnel Ownership

•         Own the end-to-end seller acquisition funnel across 21 countries: Traffic → Lead → Sign-Up → First Sale

•         Design and operate a repeatable global acquisition system with local market nuance

•         Deliver predictable growth in leads, sign-ups, and activation across all markets

•         Establish a clear operating cadence: experimentation, reporting, forecasting, and optimisation by country

Sell with OnBuy’ Experience

•         Own each country’s ‘Sell with OnBuy’ experience: localisation (language, tone), value proposition, proof points, FAQs, pricing clarity, and UX

•         Ensure every market delivers a trusted, clear, and high-converting, automated seller journey

•         Maintain compliance with local norms, claims, and messaging requirements

•         Partner with Brand to ensure consistency in tone, positioning, and storytelling

B2B Digital Marketing & Demand Generation

•         Own and scale the B2B digital marketing engine to drive high-intent inbound seller demand

•         Deploy AI-powered automation across LinkedIn, email marketing, social media, and content

•         Build and optimise conversion-focused landing pages and content journeys

•         Implement structured test-and-learn frameworks (CRO, A/B testing, attribution)

CRM, Email & Marketing Automation

•         Build a high-performing global CRM engine with localised journeys and messaging

•         Design multi-touch nurture journeys for cold, warm, and hot leads

•         Implement lead scoring, routing, and SLA alignment with Seller Onboarding / BD teams

•         Manage deliverability, list health, cadence, and continuous optimisation of messaging and CTAs

Country-Level trade PR & Communications

•         Establish trade PR programs across 21 markets to drive awareness, trust, and inbound demand

•         Build and maintain journalist networks across commerce, retail, SME, and tech press

•         Deliver a repeatable trade PR cadence: growth stories, seller success, product launches, partnerships

•         Track trade PR performance and its impact on funnel metrics and seller intent

Inbound Funnel Performance & Conversion

•         Own performance across the Inbound funnel: Traffic → Lead → Sign-Up → First Sale

•         Identify drop-offs and prioritise improvements with clear ROI cases

•         Drive improvements in conversion rates, cost efficiency, and speed to first sale

•         Run structured CRO programmes including A/B and multivariate testing

Data, Insight & Performance Management

•         Define and own country-level metrics to improve performance tracking and progression

•         Build dashboards, reporting, and forecasting models to track performance

•         Use AI-driven analytics and cohort analysis to refine acquisition strategy

•     Make data-led decisions on budget allocation by channel and country

Experience & Skills

• Proven experience in B2B demand generation, growth, or lead generation across multiple markets
• Strong ownership of inbound funnels, CRM, and conversion optimisation
• Experience scaling digital marketing using AI-powered tools and automation
• Strong PR and content capability, including localisation across marketsDeep understanding of CPL, CPA, attribution, and ROI optimisation
• Data-led decision making with ability to build dashboards and forecasts
• Experience in marketplace, eCommerce, or SaaS environments preferred
• Data-led, commercially grounded decision making
• Bias to action and continuous optimisation
• Quality over volume mindset
• Strong cross-functional collaborator
• Comfortable operating in ambiguity and scale-up environments

The salary on offer for this role is  Upto £75000 depending on experience.

We also offer the following benefits:

• Company Equity- In return for helping us to grow, we’ll offer you company equity, meaning you own a piece of this business we are all working so hard to build.
• 25 days annual leave + Bank Holidays
• 1 extra day off for your Birthday
• Employee Assistance Programme
• Perks at Work benefit platform
• Opportunities for career development and progression

This role is Hybrid  working with our office space in Media City Manchester or Central Bournemouth's offices with parking and also close to public

Our Commitment

OnBuy is an equal opportunities employer. We are dedicated to creating a fair and transparent workforce, starting with a recruitment process that does not discriminate on the basis of gender, sexual orientation, marital or civil partnership status, pregnancy or maternity, gender reassignment, race, colour, nationality, ethnic or national origin, religion or belief, disability, or age.

Just a heads up — we never use WhatsApp. or any messaging apps to contact candidates
If someone reaches out this way, it isn’t us and let the recruitment team know.