Global Job Listings

---

Summary:

The Administrative Assistant plays a key role in supporting the day-to-day operations of the Critical Mass office. This fully on-site position is the first point of contact for employees and visitors, requiring someone who is organized, approachable, and proactive. The ideal candidate brings a posit

---

Summary:

As a Creative Director, you bring a creative voice with strategic thinking to projects. You have a diverse array of experiences to bring to the roll—from conceptual development to client relations to the execution of creative deliverables. Creating and communicating concepts, creating and implementi

---

Summary:

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 g

---

Summary:

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 grows project delivery d

---

Summary:

As a Creative Director, you bring a creative voice with strategic thinking to projects. You have a diverse array of experiences to bring to the role—from conceptual development to client relations to the execution of creative deliverables. Creating and communicating concepts, creating and implementi

---

Summary:

As a Media Planner, you are eager to dive into the world of media strategy, planning, trafficking, reporting and implementation, and hit the ground running with support from the Media team. With guidance from your Media Supervisor or Director, you’re ready to break into the digital media landscape a

---

Summary:

Critical Mass is on the lookout for a dynamic HR Coordinator to join our London team on 12 month FTC. In this pivotal role, you'll report directly to the Senior HR Director and collaborate closely with the Senior HR Business Partner, Talent Acquisition Manager, and Head of Finance. You’ll play a key

---

Summary:

As a Billing Coordinator (Contract) , you support the Financial Analyst Team to manage and oversee the billing processes. Your primary duties include preparing and issuing invoices, tracking and recording payments, resolving billing disputes, generating financial reports, and ensuring compliance wit

---

Summary:

A QA reports to a QA Lead. Works closely with QA lead, QA Subject Matter Experts, other QA members, Project managers, designers, and developers to ensure QA standards and client satisfaction are delivered. He/She Provides execution of QA tasks with speed and excellent quality for the overall agility

---

Summary:

Our Quality Assurance practice is integrated across the entire project lifecycle, ensuring the agreed-upon standards and requirements are met in order to deliver the highest quality product. Whether Critical Mass is solely responsible for delivering the end-to-end solution or we're working with inte

---

Summary:

We are hiring a Senior Media Planner to build, execute, and manage strong paid media plans to support clients’ marketing objectives. You’ll be responsible for planning, trafficking, and optimizing campaigns across all paid channels including traditional, digital, performance, and emerging spaces. Th

---

Summary:

As a Marketing Science Analyst, your curiosity never ends. Always asking the next question, you seek to understand how marketing science drives the bigger picture. With 1 to 3 years of experience owning marketing science deliverables, you focus on at least two of the following: tracking and measurem

---

Summary:

As a Freelance/Contract Quality Control Specialist, you are an excellent communicator who is able to work closely with Producers, Design Supervisors, Production Designers, Studio Artists and Technical artists to ensure assets are successfully delivered without errors. Mitigating risks and managing Q

---

Summary:

Critical Mass delivers a next-gen suite of services for our clients, utilizing dynamic creative optimization to deliver creative engineering, intelligent automation, and technology expertise with a highly scaled operational model for our clients. We are seeking a full time, Creative Engineer to lead

---

Summary:

Critical Mass delivers a next-gen suite of services for our clients, utilizing dynamic creative optimization to deliver creative engineering, intelligent automation, and technology expertise with a highly scaled operational model for our clients. We are seeking a full time, Creative Engineer to lead

---

Summary:

Please note, this role is based in Toronto. As a Group Creative Director, Art you are a strong creative voice of the agency and holistically lead large teams to creative excellence, account growth, project delivery and talent development. You are a master storyteller – knowing what sells, showing wh

---

Summary:

The Human Resources Coordinator role is in the organization to support the talent discipline in specific human resources projects and tasks related to people analytics. Core expectation of this role is to assist the human resources team in day-to-day tasks and learn more about the team function. Car

---

Summary:

As the Chicago Executive Assistant, you’ll be the heart of our office—ensuring everything runs smoothly, from daily operations to special events. You’ll collaborate with teams and leadership, manage key administrative tasks, and help create a welcoming, connected environment for all staff. This role

---

Summary:

At Critical Mass, people are at the heart of everything we do. As a Contract Senior HR Business Partner (Sr HRBP), you will play a pivotal role in shaping our inclusive, high performing culture across both our Toronto and New York offices. You’ll be a trusted advisor to leadership and employees alik

---

Summary:

The Senior Associate, Digital Activation is the day‐to‐day steward on the business and is on the front lines of developing and activating both tactical and custom digital recommendations to meet our clients’ goals. They are a Digital native, curious about unique emerging opportunities and prepared t

---

Summary:

Critical Mass is hiring a Talent Acquisition Associate to focus on our Costa Rica recruitment. In this role, you will help create and execute hiring strategies for experienced talent. In a challenging hiring market, you will partner with internal teams to ideate fresh ways to attract talent and supp

---

Summary:

The Senior Associate, Digital Activation is the day‐to‐day steward on the business and is on the front lines of developing and activating both tactical and custom digital recommendations to meet our clients’ goals. They are a Digital native, curious about unique emerging opportunities and prepared t