The Critical Mass technology team is looking for an inspired, motivated, and experienced Senior Front End Developer to join our team. We are an experience design agency with a focus on the customer, which means that multi-discipline collaboration and prototyping are at the heart of our process. We're using the latest technologies including React, ES6 JavaScript, pub/sub architecture, and a clean component-based approach to deliver reusable, innovative, and responsive experiences. Web performance & accessibility are also key concerns because of their respective importance to user experience and perception of a premium experience.

• Please note- you must be located in Calgary and available to work on site in our Calgary office
  
  

You Will

• Collaborate with Design and UX to prototype user interactions
• Mentor junior front-end developers
• Ensure compatibility of code across devices and viewport sizes
• Assess and optimize page performance and WCAG compliance
• Develop and implement high-performance, visually engaging web animations using GSAP, GreenSock, or similar animation libraries to enhance user experience and interactivity
• Work with delivery team to ensure overall quality of the experience and support this with tests and documentation
  
  

You Have

• Strong communication skills with a team-centric approach to discussion and decision making within a distributed team
• Proficiency in GSAP, GreenSock, or similar web animation libraries for creating high-quality, interactive animations
• 4+ years demonstrated experience using Vanilla Javascript
• 5 + years’ experience using HTML5 semantic markup, CSS3, and CSS & SVG-based animation on responsive consumer-facing websites
• Full command of Git, the terminal, continuous deployment and integration, and other modern fundamentals
• Strong troubleshooting ability and technical analysis skills - web performance optimization included
• Familiarity with website operations and fluency in the typical tiers on a high traffic website
• Experience with the Atlassian suite of tools - JIRA, Bitbucket, Confluence, etc.
• WCAG accessibility experience is preferred
  
  

You May Have

• Adobe Experience Manager (AEM) on version 6.3 or later, or enterprise CMS
• Experience with graphQL or APIs with complex data structures
• Experience with Webpack, or other tools used to optimize and maintain front-end build systems
• Experience working in an agency environment
  
  

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
• 13 affinity groups
• Internal learning and development programs
• Enterprise-wide employee discounts
  
  

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