Start.io
Sales Manager - Supply Partnerships
How your CV stacks up
Upload your CV to see how well it fits this job role
?%
Start.io is looking for a driven and commercially sharp Supply Sales Manager to grow our publisher supply base.
This is a hunter role focused on bringing new in-app, mobile web, and web publishers onto the Start.io platform — building the supply-side foundation that powers our programmatic ecosystem.
About the Role:
You'll own the full sales cycle: from identifying and qualifying publishers, through pitching and negotiating, to closing and handing off to our account management teams. You'll work with some of the most dynamic players in our industry, and play a central role in shaping our supply growth strategy.
If you thrive in a fast-paced, data-driven environment and know how to open doors and close deals in the adtech space, we want to hear from you.
Responsibilities:
- Own the full business development and onboarding cycle for new publisher partnerships across in-app, mobile web, and web environments
- Identify, prospect, pitch, negotiate, and close strategic publisher and app developer partnerships
- Build and execute a territory strategy to grow Start.io's supply footprint — identifying whitespace, prioritizing verticals, and generating a consistent pipeline of new business
- Build and manage strong relationships with app developers, publishers, monetization teams, and business stakeholders — engaging from developer-level to C-suite
- Collaborate closely with Product, Ad Operations, Legal, and Account Management to ensure smooth onboarding and long-term partner success
- Manage commercial negotiations, IO agreements, and onboarding processes
- Maintain an accurate and healthy pipeline of opportunities in Salesforce with regular forecasting and deal progress reporting
- Conduct in-depth research and data analysis to build tailored pitches and identify revenue growth opportunities within target publishers' businesses
- Stay ahead of market trends in mobile advertising, header bidding, mediation, SDK monetization, identity, and the broader programmatic supply ecosystem — and bring that intelligence back to the business
- Represent Start.io at key industry conferences, client meetings, and networking events
Reasons to use Rodeo
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
It searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Requirements:
- 3+ years of experience in Supply Sales, Business Development, Publisher Development, Account Strategy, or related client-facing roles within adtech, mobile advertising, gaming, or app monetization.
- Strong understanding of the mobile advertising ecosystem, including SDK monetization, mediation platforms, programmatic advertising, and publisher monetization models
- Existing relationships with app developers, publishers, monetization teams, or mobile advertising stakeholders
- Proven track record of consistently achieving or exceeding sales and partnership targets in a quota-carrying role
- Strong commercial and negotiation skills — comfortable navigating legal and commercial conversations independently
- Excellent communication and presentation skills; able to earn trust quickly and build long-term relationships
- Experience managing pipelines and sales processes through Salesforce or similar CRM platforms
- Ability to operate independently and thrive in a fast-paced, rapidly evolving environment
- Highly motivated, proactive, and collaborative team player
- Fluency in English required; additional languages a plus
Get help with your application
Your very own career expert that helps elevate your application to the next level.
Why Join Start.io?
- Join a global mobile advertising and data platform working with some of the leading players across the adtech ecosystem.
- Play a key role in expanding Start.io’s publisher and supply footprint across EMEA and global markets.
- Work in a fast-paced, entrepreneurial environment with direct exposure to senior leadership and strategic partnerships.
- Opportunity to directly impact company growth and strategic publisher expansion.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
Skills
Location