Assistant Buyer, Integrated Media Investment

Crossmedia is a global media independent agency committed to transparency and innovative connections between brands and people. The Assistant Buyer will manage day-to-day responsibilities of paid media campaign management, supporting the execution, maintenance, and reporting of media buys 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: Excel, PowerPoint, Outlook
• Strong attention to detail and highly organized
• Must have a love for numbers and 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