Project Manager (Onsite)

Critical Mass is looking for a motivated and detail-oriented Project Manager to join our team. In this role, you will be responsible for leading the planning, execution, and delivery of projects while partnering closely with cross-functional teams and clients to ensure successful outcomes. The ideal candidate is highly organized, proactive, and comfortable managing multiple priorities in a fast-paced environment. You are a strong communicator who can navigate complexity, build relationships, and drive projects forward from initiation through completion.

This position requires full on-site attendance, five days per week, at the Barreal office (Heredia, Zona Franca Metropolitana).

• Lead the planning, execution, and delivery of projects from initiation through completion.
• Develop and manage project schedules, timelines, budgets, and resource plans to ensure successful delivery.
• Facilitate project meetings, drive discussions, document decisions, and ensure follow-through on action items.
• Serve as the primary point of contact for assigned projects, maintaining clear communication with internal teams and clients.
• Manage project scope and proactively address changes, risks, dependencies, and issues throughout the project lifecycle.
• Track project health through budget management, timeline adherence, resource allocation, and overall progress reporting.
• Coordinate cross-functional teams including Strategy, Creative, Technology, QA, Production, and Account Management.
• Ensure project documentation is accurate, organized, and accessible to all stakeholders.
• Support project intake, scoping, estimation, and resource planning activities.
• Prepare and communicate regular project status updates, risks, and recommendations to stakeholders.
• Partner with clients to understand objectives, align expectations, and ensure successful project outcomes.
• Identify opportunities to improve project delivery processes, workflows, and team collaboration.
• Support project reviews, retrospectives, and continuous improvement initiatives.
• Ensure projects are delivered on time, within scope, and within budget while maintaining a high standard of quality.
• Contribute to a positive team environment and support the development of project delivery best practices.

• 3–5+ years of project management experience, preferably within digital, creative, marketing, agency, consulting, or technology environments.
• Experience managing multiple concurrent projects in a fast-paced, client-facing environment.
• Strong understanding of project management principles, methodologies, and delivery frameworks.
• Experience managing project budgets, timelines, scope, risks, and stakeholder expectations.
• Excellent verbal and written communication skills, with the ability to effectively communicate across technical and non-technical audiences.
• Strong organizational skills and exceptional attention to detail.
• Proven ability to build relationships and collaborate with cross-functional teams.
• Experience working with project management and collaboration tools such as Jira, Confluence, Smartsheet, Microsoft Teams, or similar platforms.
• Strong problem-solving and decision-making skills.
• Advanced English communication skills, both written and verbal.
• Ability to work independently while managing competing priorities and deadlines.

• Experience working on digital, marketing, media, technology, or customer experience projects.
• Familiarity with Agile, Scrum, Waterfall, or hybrid project delivery methodologies.es.
• Agency experience working with global or enterprise-level clients.