Senior Retail Media Manager position at Jellyfish. Reporting to the Retail Media Director, responsible for activation & optimization, reporting & insights, testing & data analysis, and client communication across complex retail accounts. Responsibilities include managing and improving retail media campaigns (Sponsored Advertising and DSP activations across retail networks, Amazon), ensuring accurate delivery of client budgets, completing BAU tasks (campaign builds, daily pacing, optimization, reporting), creating client-facing documents with actionable performance insights, interfacing with clients, collaborating with teams, and staying updated on tools and trends. Qualifications include 3+ years of experience in retail media in an agency setting, knowledge of sponsored ads & display through Amazon with Ad Console experience, experience with third-party bid management platforms (SKAI and/or Pacvue), strong budget management, understanding of retail industry trends, and advanced Excel/Google Sheets skills. Note emphasizes skills over years of experience and invites applications in English. Bonus and flexible work environment details are provided (discretionary annual bonus; remote work up to 60% of days; flexible hours).