Head of Seller Demand- B2B Marketing in London

Head of Seller Demand- B2B Marketing in London

London Full-Time 90000 - 90000 £ / year (est.) Home office (partial)
OnBuy

At a Glance

  • Tasks: Lead global seller demand generation and optimise acquisition strategies across multiple markets.
  • Company: Join OnCommerce, a fast-growing global selling platform revolutionising ecommerce.
  • Benefits: Competitive salary, bonus potential, equity, and generous annual leave.
  • Other info: Be part of a collaborative team shaping the future of ecommerce.
  • Why this job: Make a real impact in a dynamic environment with ownership and growth opportunities.
  • Qualifications: Proven B2B demand generation experience and strong data-driven decision-making skills.

The predicted salary is between 90000 - 90000 £ per year.

OnCommerce is a global selling platform that powers a growing network of retail channels, including OnBuy, easyShop, and Comet. OnCommerce is growing fast, launching new brands and scaling to power the future of ecommerce.

OnCommerce is constantly evolving. Everyone here plays a hands‑on role in shaping what comes next, building brands that make an impact across global markets. The pace is fast, priorities shift, and you’ll often need to get stuck in and solve problems. If you thrive in that kind of environment, you’ll have real influence, real ownership, and the chance to grow with a rapidly scaling business.

The Head of Seller Demand‑B2B Marketing is accountable for building and scaling a global seller acquisition engine, covering the full journey from awareness to sign‑up across 21 international markets. You will own both B2B demand generation and seller sign‑up, ensuring we attract the right sellers through localised, high‑converting experiences, while accelerating speed to first sale.

This role is about driving interest and intent – not managing sellers post sign‑up. You do not own onboarding, activation, or seller performance.

What You Own

  • Global Seller Demand Engine: Own the top‑of‑funnel system: Awareness → Interest → Lead → Sign‑Up. Deliver predictable, scalable seller demand across all markets.
  • PR, Social & Market Visibility: Own global trade PR across 21+ markets. Turn brand storytelling into measurable seller demand.
  • Data‑Driven Demand Generation: Build and scale data‑led acquisition channels, including use of external lead data sources.
  • CRM, Lifecycle & Conversion: Own global CRM & email marketing engine. Implement lead scoring and qualification frameworks.
  • ‘Sell’ Experience: Own all /sell/ website experiences across OnBuy.com, EasyShop.com, Comet.co.uk, and OnCommerce.com.
  • Partnership‑Led Demand: You own partner output (pipeline), not execution.
  • Funnel Performance & Optimisation: Identify and fix drop‑offs. Drive improvements in conversion rate, lead quality, and cost efficiency.
  • Data, Forecasting & Performance: Own global dashboards for leads, sign‑ups, and channel performance.
  • Function Build & Structure: Build and scale the B2B marketing function.

Requirements

  • Proven experience in B2B demand generation, growth, or lead generation across multiple markets.
  • Strong ownership of inbound funnels, CRM, and conversion optimization.
  • Experience working with third‑party data providers and outbound/inbound data‑driven acquisition models.
  • Strong understanding of data quality, enrichment, and targeting strategies.
  • Experience driving high‑volume inbound acquisition primarily through LinkedIn and email marketing.

Benefits

The salary on offer for this role is up to 90,000 GBP annually + £15,000 Bonus ( £105k OTE Subject to Performance). We also offer company equity and 25 days annual leave.

Head of Seller Demand- B2B Marketing in London employer: OnBuy

At OnBuy, we pride ourselves on being a dynamic and rapidly growing online marketplace that values each team member's contributions. Our work culture fosters collaboration and innovation, providing ample opportunities for personal and professional growth in a fast-paced environment. As a Senior Performance Marketing Manager, you'll play a pivotal role in shaping our marketing strategies while enjoying the benefits of a supportive team that encourages meaningful change and prioritises your voice.

OnBuy

Contact Details:

OnBuy Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Head of Seller Demand- B2B Marketing in London

Show Your Creative Side

In marketing communications, standing out is key. Get creative with your application! Consider designing a mini-campaign or pitch that highlights your skills and understanding of the brand. Tailor it for OnBuy and show them what you can bring to the table.

Engage in Marketing Communities

Get involved in local or online marketing communications groups. Check out platforms like Meetup for events and workshops. Networking here can lead to hidden job openings and valuable insights into the industry trends—this is where we often discover what companies like OnBuy are looking for.

Leverage Social Media

Use platforms like LinkedIn and Twitter to showcase your passion for marketing communications. Share insights, articles, and your own content that resonates with the industry. Tagging or interacting with OnBuy on these platforms can catch the eye of recruiters and show you're genuinely interested in them.

Attend Industry Events

Keep an eye out for marketing conferences and workshops. These are great places to meet potential employers face-to-face and make connections that could land you a full-time role at OnBuy. Bring your business cards and be prepared to chat about how you can contribute!

We think you need these skills to ace Head of Seller Demand- B2B Marketing in London

B2B Demand Generation
Lead Generation
CRM Management
Conversion Optimisation
Data-Driven Acquisition
Market Intelligence
Email Marketing

Some tips for your application 🫡

Craft an Impactful Cover Letter:Your cover letter is your chance to shine! Focus on your passion for marketing communications and how your previous experiences can benefit OnBuy. Make sure to mention specific campaigns or projects you’ve worked on that showcase your creativity and strategic thinking.

Showcase Your Writing Skills:As you're diving into a marketing communications role, your writing ability is crucial. Include samples of your work, like blog posts, press releases, or social media campaigns in your application. This lets us see your style and how you engage with different audiences.

Tailor Your CV to Marketing:Your CV should highlight relevant marketing skills and experiences! Include specific tools or platforms you’ve used, like Google Analytics or social media management software. Mention any certifications or workshops related to marketing that you've completed – they can give you an edge!

Demonstrate Your Understanding of OnBuy:Show us that you’ve done your homework! In your application, briefly mention what you admire about OnBuy’s marketing approach or any recent campaigns that caught your attention. This can reveal your enthusiasm for the role and your genuine interest in joining our team!

How to prepare for a job interview at OnBuy

Showcase Your Creative Campaigns

Get ready to flaunt your portfolio! Include examples of previous marketing campaigns you've worked on, especially those that showcase your creativity and strategy. Recruiters at OnBuy will be keen to see how you conceptualise and execute campaigns, so highlight any measurable outcomes to back up your claims.

Know Your Digital Tools Inside Out

If you’re heading into a marketing-communications role, make sure you're comfortable discussing key digital marketing tools like Google Analytics, HubSpot, or Hootsuite. Expect some technical questions about how you've used these tools in the past, as they'll want to gauge your hands-on experience and how you analyse data to drive marketing decisions.

Be Ready for Scenario-Based Questions

At OnBuy, they may throw some scenario-based questions your way, aimed at testing your problem-solving skills in real-life marketing situations. Think through potential challenges you’ve faced, how you navigated them, and be prepared to discuss your thought process and outcome.

Demonstrate Your Passion for Marketing

As you’re applying for a full-time position, show that you're not just looking for a job, but a career in marketing. Talk about the latest trends in marketing communications, your favourite campaigns, and why they inspire you. Your enthusiasm can really make you stand out and demonstrate that you’re committed to growing within the field.