Cape Town, South Africa | Posted on 04/13/2026 Who We Are Osmos, a B2B SaaS company founded by ex-Amazon ad-tech experts, is revolutionizing retail media with an AI-powered operating system that increases retailer profitability (by up to 7% of sales) and delivers superior ROAS for brands. By enabling Tier 1 retailers and marketplaces worldwide to activate more brands and leverage advanced targeting, we help them secure a lasting competitive edge. Your Impact We are hiring a sharp, well-networked Key Account Manager to be deployed on‑ground in Johannesburg/Capetown. You will be the face of the Payflex media proposition to South African advertisers and agencies - owning outreach, pitching, negotiation, and deal closure. This is not a desk job; you are expected to be in the market, building relationships and generating revenue from day one. What You'll Do Advertiser & Agency Development Identify, prospect, and engage brands and digital media agencies with relevant media budgets across FMCG, fashion, fin‑tech, travel, and lifestyle categories. Build and maintain a robust pipeline of advertiser opportunities tailored to the Payflex audience and inventory. Leverage existing industry contacts to accelerate early revenue and reduce sales cycle timelines. Pitch & Deal Closure Develop and deliver compelling sales pitches and media proposals that align Payflex's consumer reach with advertiser objectives. Lead commercial negotiations and work toward signed insertion orders and campaign commitments. Collaborate with the Osmos central team to package deals, set pricing, and ensure proposals are commercially sound. Campaign Coordination & Client Management Act as the primary point of contact for local advertisers post‑sale, ensuring smooth campaign onboarding. Coordinate with Osmos operations for campaign activation, reporting, and optimization. Manage ongoing client relationships with a focus on renewals, upsells, and long‑term partnership development. Market Intelligence & Reporting Track competitor media offerings, local advertiser sentiment, and category spend trends in the South African market. Provide structured weekly pipeline reports, revenue forecasts, and field insights to the Osmos Demand Generation Lead. Flag blockers, objections, and market‑specific nuances that require central team support or product adaptation. You'll Thrive If You Have 4-7 years of experience in digital media sales, programmatic advertising, or retail media. Established, active network with brand marketing teams and/or digital media agencies in South Africa. Proven track record of independently owning a sales pipeline and closing media deals. Strong understanding of digital advertising concepts: CPM, CPC, audience targeting, attribution, campaign KPIs. Exceptional communication and persuasion skills - comfortable presenting to both C-suite and media planners. Self‑starter attitude: capable of operating autonomously with minimal hand‑holding in a startup environment. Prior experience working with retail media networks, e‑commerce platforms, or BNPL / fin‑tech brands. Familiarity with programmatic ecosystems, DSPs, and performance media planning. Experience managing agency relationships at both the strategy and buying levels. Exposure to emerging market media dynamics and cross‑border campaign management. Why Choose Osmos? Startup Energy, Enterprise Scale - Fast‑paced innovation with global ambition. Revolutionize Retail Marketing - Be at the forefront of AI‑powered solutions. Meaningful Contribution - Directly impacts major brands' success. No Red Tape - Autonomy and empowerment to drive results. Growth & Fun - Continuous learning in a vibrant, collaborative culture. Competitive Rewards - We value your expertise and offer strong compensation. #J-18808-Ljbffr