Invoice Reconciliations Manager - Media
No salary listed
Mid
Bachelor's
San José Province, San José, Costa Rica
HybridWork from an office at least 3 days per week; expected to align with Eastern Time.
AccountingAccounts Payable/Receivable
About the job
Requirements
- A diploma or degree in accounting, finance, marketing, media, or a related field.
- Approximately 3 years of experience in media investment, media operations, billing, accounting, finance, or a related environment.
- Working knowledge of accounting principles, media billing processes, reconciliations, accruals, and foreign currency transactions.
- Strong understanding of campaign setup, media buying workflows, and the relationship between media authorizations, approved budgets, buys, and vendor invoices.
- Strong proficiency in Excel, including formulas, lookups, pivot tables, and large data sets; proficiency with Outlook and Word.
- Experience using Mediaocean is required.
- Strong analytical and problem-solving skills to investigate discrepancies, troubleshoot issues, and drive them through to resolution.
- Strong decision-making and judgment to assess issues, determine appropriate next steps, and escalate when required.
- Exceptional attention to detail and accuracy when handling financial, campaign, and billing data.
- Written and verbal communication skills to collaborate across internal teams and communicate with vendors.
- Organizational and prioritization skills to manage multiple campaigns, deadlines, and competing requests in a fast-paced environment.
- A proactive, self-motivated approach and ability to work independently, take ownership of responsibilities, and exercise sound judgment.
- Ability to work in alignment with Eastern Time.
Responsibilities
- Own campaign timeline coordination and provide day-to-day operational support to the investment team during campaign activation, including actualization, billing validation, and vendor invoice reconciliation.
- Manage campaign setup, buy entry, and ongoing maintenance across relevant media systems, ensuring activity aligns with client-approved budgets, Media Authorization Forms (MAFs), and agreed buying parameters.
- Review campaign and billing inputs for accuracy, identify discrepancies, and work with internal teams and vendors to resolve issues in a timely manner.
- Partner with investment, account, finance, and operations teams to provide campaign status updates, billing forecasts, and reconciliation information.
- Support the end-to-end media billing process, including invoice tracking, accruals, actualization, and follow-up on outstanding items.
- Maintain accurate documentation and audit trails for campaign and billing activity, ensuring processes comply with internal controls and client requirements.
- Identify opportunities to improve processes, enhance data quality, and support automation initiatives that increase efficiency across client and campaign deliverables.
- Serve as a point of contact for billing-related queries, escalating risks and exceptions appropriately and communicating their potential impact on campaign delivery or financial accuracy.
Desired Qualifications
- Experience within a media agency is an advantage.
- Exposure to Prisma or other media planning, buying, trafficking, or financial management platforms.
About the company
Critical Mass is a digital experience design agency that builds websites, marketing campaigns, and data analytics tools for brands in sectors like automotive and healthcare. The agency works by collaborating directly with clients to design and develop custom digital solutions that simplify complex technical challenges into user-friendly interfaces. Unlike many competitors, Critical Mass integrates specialized talent development programs like Trailhead and CM AIR to foster internal creativity and ensure a steady pipeline of emerging industry talent. Their goal is to use comprehensive digital strategies and creative partnerships to deliver impactful online experiences that connect brands with their target audiences.
Company Size
1,001-5,000
Company Stage
M&A
Total Funding
$238K
Headquarters
Calgary, Canada
Founded
1996
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Simplify's Take
What believers are saying
- Critical Mass posted 2026 awards and shortlists, including WorkLife and Campaign Global recognition.
- Greenhouse showed 23 open roles in September 2026, signaling active hiring.
- Omnicom’s post-IPG scale gives Critical Mass access to larger clients and shared demand.
What critics are saying
- Omnicom folded RAPP into Critical Mass in June 2026, signaling overlap-driven consolidation.
- The drumbeat of retirements at MRM, DDB, FCB, and MullenLowe normalizes brand pruning.
- AI and zero-click SEO demand will squeeze margins unless Critical Mass retrains fast.
What makes Critical Mass unique
- Critical Mass leads Omnicom Precision Marketing’s activation practice alongside RAPP and Credera.
- Its 12-office footprint spans Calgary, Chicago, New York, London, Tokyo, and São Paulo.
- 2026 awards for Diageo, BNY, Skittles, and GOArmy prove cross-sector execution.
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Benefits
- Professional Development Spending Account that can be used for conferences, courses, subscriptions, books
- Competitive pay and benefits
- Match charitable donations up to $100USD
- Flexible, reasonable work-from-home arrangements whenever possible