Assistant Buyer, Integrated Media Investment

WHO WE ARE
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+ Crossmedians 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. Big time. We invest in each colleagues’ 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 seven years in a row.
We have offices in the US, London and Germany. Our client roster includes U.S. Bank, Invesco, Newell Brands, NASCAR, Planet Fitness, American Cancer Society, Ricola, Herschend Family Entertainment, Zalando, Edible Arrangements, Citizens Bank, and more.
YOUR ROLE
We’re looking for a bright Assistant Buyer, Integrated Media 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.
KEY RESPONSIBILITIES:
Campaign Execution & Support
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
Reporting & Optimization
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
Financial & Administrative Support
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
Vendor & Partner Collaboration
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
Internal Collaboration & Learning
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
REQUIREMENTS:
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.
Please note this role requires a candidate with proximity to our NY office. We offer a hybrid work setting with employees working both onsite and from home. Assistants are in the office an average of two days a week for training, collaboration, and overall learning.
Salary range is $43k - $50k. Commensurate with experience. Compensation is determined on the skills, qualifications, certifications, tenure in the industry, and experience of the applicant along with the requirements of the position.
CROSSMEDIA BENEFITS
Our principles of Trust, Reason, and the Pursuit of Happiness are brought to life through benefits that recognize and support the diversity and physical, emotional, and professional well-being of our people, including: