The Critical Mass technology team is looking for an inspired, motivated, and experienced Senior 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.

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
• 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
• 4+ years demonstrated experience using Vanilla Javascript
• 2+ years experience using Typescript 
• 2+ years experience using Reactjs
• 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 Nextjs
• Experience with Webpack, or other tools used to optimize and maintain front-end build systems
• Experience working in an agency environment
• A -very strong- meme game

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
• Extensive winter holiday office closures
• Diversity and Inclusion Board with 12 affinity groups
• Internal learning and development programs
• Enterprise-wide employee discounts

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 4 days a week.

At Critical Mass, we value our employees and offer competitive compensation and benefits packages. If you’re looking for a challenging and rewarding opportunity, we encourage you to apply for this exciting position today!