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!