Top Benefits
About the role
We are seeking a talented and motivated Intermediate Front-End Developer to join our dynamic team. In this role, you will be responsible for creating engaging, user-friendly web interfaces using core web technologies. If you have a passion for building great user experiences and a solid foundation in web development, we’d love to meet you!
You Will
- Develop, maintain, and enhance web applications using HTML, CSS, and JavaScript (ES6+)
- Translate UI/UX designs and wireframes into functional, responsive web pages
- Collaborate with designers, back-end developers, and other team members
- Optimize applications for speed, scalability, and cross-browser compatibility
- Debug and troubleshoot front-end issues
- Write clean, maintainable, and well-documented code
- Stay updated with the latest front-end development best practices
- Participate in code reviews
- Maintain up-to-date and complete documentation on projects as outlined in the platform guidelines and best practice
You Have
- 3+ years of professional front-end development experience
- Strong proficiency in vanilla JavaScript
- Solid experience with HTML5 and CSS3 (including pre-processor tools, eg SASS)
- Understanding of responsive design principles and cross-browser compatibility
- Familiarity with version control systems (e.g., Git)
- Excellent problem-solving skills and attention to detail
- Good communication and teamwork skills
Nice To Have
- Experience using jQuery for DOM manipulation and event handling
- Experience working with REST APIs
- Familiarity with basic SEO principles
- Exposure to build tools (Webpack, Gulp, Grunt, etc.)
- Previous experience in Agile/Scrum environments
- Familiarity developing to web accessibility standards (WCAG etc)
What We Offer
- Global maternity and parental leave
- Competitive benefits packages
- Vacation, compassionate leave, sick days, and flex days
- Access to online services for families and new parents
- Summer Fridays (off at 3:00 PM local time every Friday)
- Diversity and Inclusion Board with 13 affinity groups
- Internal learning and development programs
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. 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. 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*
About Critical Mass
Critical Mass is a team of 1,800 inspired folks based in 12 offices around the world, providing full-service digital capabilities for the greatest brands on Earth. Our secret sauce is our uncompromising design standards, our relentless focus on customers, and an ability to put powerful new technologies to work for our clients.
We work with the best—Apple, Nike, Mars Wrigley, Nissan, Diageo, Airbnb, BMW, BNY Mellon, Johnson & Johnson, and many more—brands who strive for connected digital ecosystems and unparalleled experiences. We help them get there by gaining deep insight into their consumers and orchestrating data, AI, design, media, and tech stacks around human stories.
We’re a global agency founded in Canada, but digital is our home. If you know us, then you know we’re a special, quirky place that attracts big talent and tiny egos. (We actually give out a “so f-n nice” award—lots of them). But just because we’re friendly doesn’t mean we’re not a force to be reckoned with. We’re driven. Relentless. And we live our values. We’re Critical Mass, but our friends call us CM. Please call us CM!
Top Benefits
About the role
We are seeking a talented and motivated Intermediate Front-End Developer to join our dynamic team. In this role, you will be responsible for creating engaging, user-friendly web interfaces using core web technologies. If you have a passion for building great user experiences and a solid foundation in web development, we’d love to meet you!
You Will
- Develop, maintain, and enhance web applications using HTML, CSS, and JavaScript (ES6+)
- Translate UI/UX designs and wireframes into functional, responsive web pages
- Collaborate with designers, back-end developers, and other team members
- Optimize applications for speed, scalability, and cross-browser compatibility
- Debug and troubleshoot front-end issues
- Write clean, maintainable, and well-documented code
- Stay updated with the latest front-end development best practices
- Participate in code reviews
- Maintain up-to-date and complete documentation on projects as outlined in the platform guidelines and best practice
You Have
- 3+ years of professional front-end development experience
- Strong proficiency in vanilla JavaScript
- Solid experience with HTML5 and CSS3 (including pre-processor tools, eg SASS)
- Understanding of responsive design principles and cross-browser compatibility
- Familiarity with version control systems (e.g., Git)
- Excellent problem-solving skills and attention to detail
- Good communication and teamwork skills
Nice To Have
- Experience using jQuery for DOM manipulation and event handling
- Experience working with REST APIs
- Familiarity with basic SEO principles
- Exposure to build tools (Webpack, Gulp, Grunt, etc.)
- Previous experience in Agile/Scrum environments
- Familiarity developing to web accessibility standards (WCAG etc)
What We Offer
- Global maternity and parental leave
- Competitive benefits packages
- Vacation, compassionate leave, sick days, and flex days
- Access to online services for families and new parents
- Summer Fridays (off at 3:00 PM local time every Friday)
- Diversity and Inclusion Board with 13 affinity groups
- Internal learning and development programs
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. 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. 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*
About Critical Mass
Critical Mass is a team of 1,800 inspired folks based in 12 offices around the world, providing full-service digital capabilities for the greatest brands on Earth. Our secret sauce is our uncompromising design standards, our relentless focus on customers, and an ability to put powerful new technologies to work for our clients.
We work with the best—Apple, Nike, Mars Wrigley, Nissan, Diageo, Airbnb, BMW, BNY Mellon, Johnson & Johnson, and many more—brands who strive for connected digital ecosystems and unparalleled experiences. We help them get there by gaining deep insight into their consumers and orchestrating data, AI, design, media, and tech stacks around human stories.
We’re a global agency founded in Canada, but digital is our home. If you know us, then you know we’re a special, quirky place that attracts big talent and tiny egos. (We actually give out a “so f-n nice” award—lots of them). But just because we’re friendly doesn’t mean we’re not a force to be reckoned with. We’re driven. Relentless. And we live our values. We’re Critical Mass, but our friends call us CM. Please call us CM!