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Critical Mass

Digital experience design and marketing solutions

Associate Invoice Reconciliations - Media

Accounts Payable/ReceivableConfirmed live in the last 24 hours
Full-timeSan José Province, San José, Costa RicaNo salary listed

About the Job

Requirements

  • A diploma or degree focused on accounting, finance, marketing, media, or a related field.
  • 0–2 years of experience in accounting, finance, media operations, or a related environment.
  • Strong accounting knowledge and solid technical and analytical skills.
  • Strong Excel skills, including formulas, lookups, pivot tables, and working with data sets.
  • Proficiency in Microsoft Office Suite, including Excel, Word, and Outlook.
  • Familiarity with foreign currency transactions.
  • Exceptional attention to detail and a high level of accuracy when handling financial, campaign, and billing data.
  • Excellent written and verbal communication skills.
  • Strong organizational skills and the ability to manage multiple priorities and deadlines.
  • Ability to adapt and thrive in a fast-paced, dynamic environment.
  • Ability to work independently with minimal supervision.
  • Ability to work in alignment with Eastern Time (ET).

Responsibilities

  • Maintain oversight of client media budgets and requirements and develop and communicate media billing schedules.
  • Review and audit Media Authorization Forms alongside related vendor invoices.
  • Support SOX testing, including documentation and assistance with selected samples.
  • Reconcile client billing and vendor invoices within the finance system.
  • Manage supporting backup documentation for month-end reconciliation.
  • Prepare ad hoc reports for internal and external purposes as necessary.
  • Coordinate campaign timelines and provide operational support to the investment team throughout campaign activation, including actualization and vendor invoice reconciliation.
  • Assist with campaign setup, buy entry, and ongoing maintenance, ensuring all inputs align with client-approved budgets and Media Authorization Forms.
  • Collaborate with internal teams to deliver accurate status updates for billing purposes.
  • Contribute to process improvement initiatives and support automation efforts to enhance efficiency in client and campaign deliverables.

Desired Qualifications

  • Familiarity with Mediaocean, Prisma, or other media planning, buying, or financial management tools is a plus.

About the Company

Critical Mass

Digital experience design and marketing solutions

Critical Mass creates digital experiences for brands, offering strategy, UX design, website development, digital marketing, social media, and data analytics. It implements solutions through collaborative, bespoke engagements that span from initial strategy and design to development and ongoing optimization. The company differentiates itself with co-creation with clients, cross-industry experience, and in-house talent programs like CM AIR and Trailhead. Its goal is to simplify complex digital challenges and deliver measurable, engaging solutions that resonate with target audiences.

Company size
1,001-5,000
Company stage
M&A
Total funding
$238K
Headquarters
Calgary, Canada
Founded
1996

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