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Posted Apr 9, 2026

Assistant Buyer, Integrated Media Investment

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Crossmedia is a global media independent agency committed to transparency and innovative media solutions. They are seeking an Assistant Buyer, Integrated Investment to manage day-to-day responsibilities of paid media campaign management, focusing on execution, maintenance, and reporting across traditional and digital channels. Responsibilities - Assist in the preparation of media authorizations and insertion orders to activate buys - Enter campaign data and maintain accurate records across internal systems (e.g., OneStrata, Investment Trackers) - Help manage timelines and deliverables, ensuring vendors receive specs and assets on time - Monitor campaign pacing and delivery, flagging any under- or over-delivery to the team - Compile weekly and monthly campaign performance reports, pulling data from media partners, platforms, and internal dashboards - Analyze delivery vs. planned metrics and assist in optimization recommendations - Help create and update post-buy analyses for client presentations - Track billing and work with finance teams to resolve discrepancies or reconcile vendor invoices - Maintain budget trackers and assist in updating actuals vs. planned spend - Organize documentation including contracts, screenshots, and proof of performance - Communicate directly with vendors to confirm buys, gather reporting data, and resolve execution issues - Attend vendor meetings and take notes to assist the broader team in evaluating new opportunities - Attend and note take during team meetings, client briefings, and status calls as appropriate - Participate in training sessions to deepen knowledge of media buying systems, analytics tools, and the media landscape - Stay informed on media industry trends, competitive campaigns, and emerging platforms Skills - Bachelor's in Advertising, Marketing or related field - A very high proficiency with Microsoft Office Suite tools, and especially be a wiz with Excel, PowerPoint and Outlook - Strong attention to detail and highly organized - Must have a love for numbers and a high numerical aptitude - Excellent communication skills - Eagerness to learn and adaptability - A strong interest and knowledge of Media Buying and Planning - Previous marketing, advertising or media agency experience are a plus Benefits - Flexibility to work in hybrid manner with in-office and work from home options (depending on role). - Open/Flexible PTO with US & UK specific policies - Sponsored healthcare options and agency-wide physical & mental health support - 401k with company match (USA), and generous Pension (UK) - Paid sabbatical at significant milestone anniversaries - Generous paid parental leave policy - Life milestone recognition & support - The Pursuit of Happiness Fund devoted to helping Crossmedians find their happy (be it travel, enrichment class, fitness membership or professional development) - Cell phone/tech reimbursement - Student Loan payment plan (US) - Tuition reimbursement - Learning & Development and training programs - And burgers – lots and lots of burgers Company Overview - Crossmedia, Inc. is an independent minority-owned New York City-based communications planning and media services agency. It was founded in 2000, and is headquartered in New York, New York, USA, with a workforce of 201-500 employees. Its website is http://www.xmedia.com.