Criticalmass
Senior Developer
This role is being posted on the Critical Mass job board on behalf of Tribal Worldwide, part of Omnicom Group's DDB Worldwide. The successful candidate will join Tribal Worldwide as an employee. Tribal is a creative force that blends strategy, design, and technology, and we are
Senior Production Copywriter, Contract
The Senior Production Copywriter ensures all work from the copy team flows efficiently between internal creative and production departments. You will drive the on-time delivery of assets and act as a champion for client standards, ensuring that all final customer-facing deliverables represent our cl
Senior Production Copywriter, Contract
The Senior Production Copywriter ensures all work from the copy team flows efficiently between internal creative and production departments. You will drive the on-time delivery of assets and act as a champion for client standards, ensuring that all final customer-facing deliverables represent our cl
Senior Designer
We're looking for a Senior Designer who can operate in two gears simultaneously: campaign thinker and systems builder. You bring the creative instinct to develop compelling, on-brand campaigns and the structural thinking to build the templates, components, and frameworks that make those campaigns sc
Senior Developer
The Critical Mass technology team is looking for an inspired, motivated, and experienced Senior Developer to join our Communications team for a contract engagement. We are an experience design agency with a focus on the customer, which means that collaboration and precision execution are at the hear
Senior Developer
The Critical Mass technology team is looking for an inspired, motivated, and experienced Senior Developer to join our Communications team for a contract engagement. We are an experience design agency with a focus on the customer, which means that collaboration and precision execution are at the hear
Human Resources Business Partner (HRBP) - Temporary for 12 months
Are you ready to drive positive change and make a lasting impact? We're looking for a dynamic HR Business Partner to join our Human Resources team in Heredia, Costa Rica as a temporary employee for 12 months . As our HR Business Partner, you'll play a crucial role in shaping our organization'
Human Resources Business Partner (HRBP) - Temporary for 12 months
Marketing Science Lead
As a Marketing Science Lead, you are endlessly curious, always asking the next question to demonstrate the value of marketing science to internal and external stakeholders. With 5 to 8 years of experience leading marketing science projects, you have developed expertise in measurement, reporting, dat
Senior Social Strategist
As a Senior Social Strategist at Critical Mass, you'll be the strategic lead driving social initiatives for key organizational clients. The right candidate for this role will know how to mine complex data sets, then research and transform them into actionable strategic playbooks, while also understa
Senior Social Strategist
As a Senior Social Strategist at Critical Mass, you'll be the strategic lead driving social initiatives for key organizational clients. The right candidate for this role will know how to mine complex data sets, then research and transform them into actionable strategic playbooks, while also understa
Senior Social Strategist
As a Senior Social Strategist at Critical Mass, you'll be the strategic lead driving social initiatives for key organizational clients. The right candidate for this role will know how to mine complex data sets, then research and transform them into actionable strategic playbooks, while also understa
Senior Designer
As a Freelance Senior Designer, you will develop breakthrough creative concepts that translate visually across interactive platforms for web-based marketing initiatives and product launches. You're an original thinker and collaborative leader—matching strategic direction with elegant design solution
Senior Creative Engineer
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 independently, while also
Creative Engineer
The Creative Engineer is responsible for executing production design deliverables, including creating image assets, resizing display and social media banners, and refreshing digital layouts and templates. The Creative Engineer works as part of a larger team and can handle complex digital production
Senior Copywriter
Critical Mass London are looking for an experienced copywriter to come and join the team based in Southwark. As a Senior Copywriter, you are a seasoned storyteller who loves to collaborate with creatives and strategists to bring a digital voice to life. Grasping communication challenges and de
Art Director
The Art Director is responsible for conceptual development and the execution of creative deliverables. These responsibilities include creating and communicating concepts, implementing marketing strategies and developing interactive design solutions. Reporting to the Creative Director, the Art Direct
Art Director
The Art Director is responsible for conceptual development and the execution of creative deliverables. These responsibilities include creating and communicating concepts, implementing marketing strategies and developing interactive design solutions. Reporting to the Creative Director, the Art Direct
Senior Art Director
As a Senior Art Director, you’re excited to join a growing creative team to develop experiences that improve customers’ lives. Leading major marketing initiatives is what keeps bringing you back to the office—including championing concepts to plan cutting-edge online strategies. We’ll welcome your s
Technology Director
Technology Director San José, Costa Rica As the Technology Director, you are a visionary technical leader who oversees platform development and guides technical evolution. You lead Tech Leads, Frontend/Backend Developers, QA, DevOps, and Content Authors. You are responsible f
Media Planner
As a Media Planner, you are eager to dive into the world of media trafficking, reporting and implementation, and hit the ground running with support from the Media team. You bring a passion for Media to the office, and your enthusiastic personality makes you keen to offer insights into campaign anal