Account Coordinator

The Trailhead program is the start of your epic journey at Critical Mass. During your initial 12-weeks, you will embark on a custom-built learning journey to understand what we do, who we are, and how we make award-winning work with our clients. Our goal is to integrate you into the amazing work we do here at Critical Mass, and support you as part of the team to grow your career with us! 

Our Fall 2025 Trailhead Cohort commences October 6, 2025. 

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As an Account Coordinator, you support the Client Services Team to expertly manage and grow client relationships. Organizing status meetings, preparing presentations, documenting meeting minutes, coordinating meetings, travel, and expenses requires you to be thorough and detail-oriented—but you’ve got that covered. You’re eager to put your outgoing personality to the test by gaining experience in effective team communication. And you’ll grow in your role with key guidance and mentorship from Account Director(s) and Exec leaders.  

You will:  

• Develop a trusting relationship with clients and partner agencies.  

• Represent Critical Mass’s values and mission.  

• Begin to understand and showcase Critical Mass service offerings.  

• Organize and set agendas for weekly client meetings.  

• Assume ad-hoc requests and assist in the coordination, preparation, and promotion of projects and special events.  

• Prepare appropriate presentations and present data from varying sources.  

• Liaise with Client Services and Project Management teams.  

• Schedule meetings and facilitate meeting needs with internal teams, departments, clients, and vendors.  

• Liaise and communicate on behalf of Client Services department.  

• Coordinate between agencies regarding client information and document sharing, meeting scheduling, and communication maintenance.  

• Support Marketing and Business Development department teams as required.  

• Begin to understand financial literacy per account.   

• Further develop digital acumen and performance marketing.  

• Grow your knowledge of digital marketing and trends in the industry.   

You have:   

• Preferred: prior experience or exposure to professional experience, preferably in an Administrative Assistant / Coordinator role in an interactive environment or advertising agency. This could include internships experience.   

• Highly proficient skills in Microsoft Office Suite, Powerpoint, and Keynote.  

• Excellent word-processing skills.  

• Excellent oral and written communication skills.  

• A thorough, detail-oriented mindset where organization is prioritized.  

• Ability to multi-task and meet tight deadlines.  

• Ability to work well under stress and in a dynamic environment.  

• An outgoing, self-motivated and assertive personality.  

• Good balance between working independently and with a team.  

• Effective interpersonal skills and the ability to be a global thinker.  

• Ability to proactively and diligently follow up with teams.  

• Good use of tact and judgment. 

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What We Offer 

• Global maternity and parental leave 

• Competitive benefits packages 

• Vacation, compassionate leave, wellness days, and flex days 

• Access to online services for families and new parents  

• Hybrid work options 

• Extensive winter holiday office closures 

• Summer Fridays (off at 3:00 PM local time every Friday) 

• Diversity and Inclusion Board with 12 affinity groups 

• Funding towards external Learning and Development  

• Enterprise-wide employee discounts  

The Talent Team at Critical Mass is focused on ensuring we provide the best training, onboarding, and employee experience possible! Our new hires & employees are the future of our organization, and we want to set you up for long-term success. In an effort to do so, we expect our team to work from an office a minimum of 3 days a week. The ask stems from our want to: 
 
Strengthen opportunity for continuous learning 
Improve collaboration and team relationships. 
Increase employee engagement 

This hybrid model balances the need for individual flexibility while maintaining the relentless customer focus we provide at CM. We understand that not everyone may feel comfortable with this expectation, so we ask that you please let us know immediately if there are any concerns so we can help navigate accordingly.  

The salary for this role, based in New York is $65,00 and we continually review ranges to address skills, experience and markets.  Base salaries are determined during our interview process, by assessing a number of factors that include, but aren’t limited to, a candidate’s experience and skills relative to the scope and responsibilities of the position.

Critical Mass is an equal opportunity employer. 

The Critical Mass Talent Acquisition team will only communicate from email addresses that use the URLs criticalmass.com and us.greenhouse-mail.io. We will not use apps such as Facebook Messenger, WhatsApp, or Google Hangouts for communicating with you. We will never ask you to send us money, technology, or anything else to work for our company. If you believe you are the victim of a scam, please review your local government consumer protections guidance and reach out to them directly.

If U.S. based: https://www.consumer.ftc.gov/articles/job-scams#avoid
If Canada based: https://www.canada.ca/en/services/finance/consumer-affairs.html
If U.K. based: https://www.gov.uk/consumer-protection-rights
If Costa Rica based: https://www.consumo.go.cr/educacion_consumidor/consejos_practicos.aspx