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Jobs at Critical Mass

17 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.

1–17 of 17 jobs

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  • Senior Content Author (AEM)

    2 days ago

    Critical Mass · San José, Costa Rica

    SeniorMarketing

    The Senior Content Author (SCA) is responsible for designing components and providing support to web applications. The SCA is able to work independently, assuming ownership for the design and authoring of simple and complex web sites. The SCA should also be able to provide…

  • Project Coordinator (Digital)

    2 days ago

    Critical Mass · San José, Costa Rica

    Operations

    The Project Coordinator is responsible for supporting the successful delivery of projects around website content updates that launch under embargo to tight client dates, working closely with cross-functional, multi-project teams to ensure deliverables are completed on time and…

  • Project Manager

    2 weeks ago

    Critical Mass · San José, Costa Rica

    Mid levelOperations

    Critical Mass is looking for a motivated and detail-oriented Project Manager to join our team and help deliver impactful media and digital marketing campaigns for leading global brands.

  • Marketing Science Analyst

    5 weeks ago

    Critical Mass · San José, Costa Rica

    Entry levelMarketing

    As a Marketing Science Analyst, your curiosity never ends. The next question is always on your mind, helping you to understand how marketing science fits in the big picture of a project. You bring in 1 to 3 years of experience, owning marketing science deliverables across a…

  • Invoice Reconciliations Manager (Media)

    6 weeks ago

    Critical Mass · San José, Costa Rica

    Mid level

    Join Critical Mass as our Invoice Reconciliations Manager (Media), with a focus on media billing and operational oversight. In this role, you will lead and oversee key media investment processes, ensuring accurate and timely billing, effective campaign management, and strong…

  • Associate Invoice Reconciliations (Media)

    6 weeks ago

    Critical Mass · San José, Costa Rica

    Entry level

    Join Critical Mass as our Associate Invoice Reconciliations (Media) with a focus on media billing. In this role, you will play a vital part in supporting our media investment team, ensuring accurate and timely invoicing for our clients, and maintaining meticulous records of…

  • Designer (Visual & IA)

    8 weeks ago

    Critical Mass · San José, Costa Rica

    Mid levelDesign

    The Designer is responsible for creating and supporting a wide range of high-quality digital and visual design deliverables across different types of creative projects. This role is highly versatile and hands-on, combining strong foundational design skills with an interest in…

  • Talent Acquisition Manager

    2 months ago

    Critical Mass · San José, Costa Rica

    Mid levelPeople & HR

    Critical Mass is seeking a strategic Talent Acquisition Manager to lead and scale our recruitment efforts across Latin America, with a primary focus on Costa Rica. This is a key role responsible for developing and executing regional hiring strategies, fostering strong…

  • Marketing Science, Analyst

    2 months ago

    Critical Mass · San José, Costa Rica

    Mid levelMarketing

    The Marketing Science, Analyst is an implementation-focused role responsible for supporting website analytics and digital measurement initiatives across a newly launched implementation project. Unlike traditional Marketing Science positions centered around media analytics,…

  • Marketing Science, Analyst - Media

    2 months ago

    Critical Mass · San José, Costa Rica

    Mid levelMarketing

    As a Media Analyst, you will support the measurement, reporting, and analysis of paid media campaigns, helping teams understand performance and identify opportunities to optimize media investments.

  • Creative Engineering Director

    2 months ago

    Critical Mass · San José, Costa Rica

    DirectorEngineering

    Creative Engineering is the discipline that turns ideas into systems, the connective tissue between concept and code, between craft and scale. As a Creative Engineering Director, you own that discipline across accounts. You set the standards, define the vision for how our…

  • Marketing Science, Senior Analyst

    2 months ago

    Critical Mass · San José, Costa Rica

    SeniorMarketing

    As a Marketing Science, Senior Analyst, your curiosity never ends. You'll be the data detective for an Automotive OEM brand, turning numbers into narratives and driving digital experiences to new heights. The next question is always on your mind, helping you to understand how…

  • Senior Creative Engineer (Production & Design Systems)

    4 months ago

    Critical Mass · San José, Costa Rica

    SeniorEngineering

    The Senior Creative Engineer leads and executes high-quality production design deliverables across digital platforms, ensuring efficiency, accuracy, and innovation. This role requires a strong ability to manage and deliver complex, multi-channel digital production projects…

  • Marketing Science Senior Analyst

    4 months ago

    Critical Mass · San José, Costa Rica

    SeniorMarketing

    Critical Mass uses artificial intelligence in our recruitment process to enhance job postings, filter keywords during the review of prospective candidates, and, in some cases, transcribe interviews with our recruiters. Human review remains central to the process, and all hiring…

  • Project Coordinator (Entry level - Digital)

    4 months ago

    Critical Mass · San José, Costa Rica

    Entry levelOperations

    Critical Mass is looking for a motivated and detail-oriented Project Coordinator (Entry Level) to join our team. In this role, you will support the delivery of digital marketing campaigns, website content updates, email marketing initiatives, and creative production tasks. You…

  • Project Manager (Creative Advertising Campaigns)

    6 months ago

    Critical Mass · San José, Costa Rica

    SeniorOperations

    The Project Manager reports to a Program Manager. Works closely with Directors and Subject Matter Experts, designers, developers and quality to ensure flawless project execution, efficient resource allocation, project financial sanity and client satisfaction. He/She supports…

  • 2026. Project Manager (Associate - Mid - Senior)

    8 months ago

    Critical Mass · San José, Costa Rica

    SeniorOperations

    Critical Mass uses artificial intelligence in our recruitment process to enhance job postings, filter keywords during the review of prospective candidates, and, in some cases, transcribe interviews with our recruiters. Human review remains central to the process, and all hiring…

Updated 06 Nov 2026 09:37 UTC from the OptiTalent job library.