Assistant Buyer, Integrated Media Investment

Assistant Buyer, Integrated Media Investment

New York, New York

Crossmedia is the global media independent. We’re committed to doing media and business the right way, guided by the principles of TRUST
, REASON and the pursuit of HAPPINESS
. Crossmedia US was founded in NY in 2000 and is one of the largest minority-owned full-service media planning & buying agencies in the nation. We are 500+ Cross medians worldwide with big ambitions to continue to grow with soul.

We focus on what media agencies should do: create innovative connections between brands and people regardless of channel or budget. And we do it in an honest way. We are and always have been a values-based organization. We earn our clients TRUST by ensuring media transparency in our business model and objectivity in decision-making. We apply REASON & logic to finding solutions to our clients' greatest business challenges.

The pursuit of HAPPINESS matters to us
. We invest in each colleague’s professional & personal wellbeing and growth. It’s why we have countless initiatives, clubs & cultural events dedicated to our people and why we have been the top ranked media agency named to Ad Age’s Best Places to Work for the past six years in a row.

We have offices in New York and Philadelphia, with employees across 25+ states, as well as in London, Toronto, and Germany. Our client roster includes U.S. Bank, Invesco, Newell Brands, NASCAR, Planet Fitness, American Cancer Society, Ricola, Herschend Family Entertainment, Edible Arrangements, Illva Saronno, and more.

We’re looking for a bright Assistant Buyer, Integrated Investment to help manage day-to-day responsibilities of paid media campaign management. A naturally curious mind, resourcefulness, a love for numbers and a passion for advertising are a must.

The Assistant Buyer supports the execution, maintenance, and reporting of media buys across traditional and digital channels. This is an entry-level role designed for a motivated, detail-oriented individual looking to build foundational experience in media planning and buying. You’ll work closely with internal teams, vendors, and media partners to ensure campaigns are executed accurately and efficiently, while learning about pricing strategy, media performance, and client servicing.

• 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., One Strata, 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

• Bachelor’s in Advertising, Marketing or related field
• A very high proficiency with Microsoft Office Suite:
  Excel, PowerPoint, Outlook
• Strong attention to detail and highly organized
• Must have a love for numbers and numerical aptitude
• Eagerness to learn and adaptability
• A strong interest and knowledge of Media Buying and Planning
• Previous marketing, advertising or media agency…