Assistant Buyer, Integrated Media Investment

Crossmedia Inc•New York, NY

15h•Hybrid

About The Position

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.

Requirements

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
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.

Nice To Haves

Previous marketing, advertising or media agency experience are a plus.

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

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