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.

As a Senior Developer, you will create rich, interactive user experiences. This includes building quality user experiences, architectural planning for front-end technology, and collaborating on data formats and APIs with partner teams internally. You will work with talented web designers to help develop the future web presence.

You Will:

• Collaborate with Design and UX to prototype user interactions
• Mentor other 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
• 5+ years demonstrated experience using Vanilla Javascript
• 5+ 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 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
• Summer Fridays (off at 3:00 PM local time every Friday)
• Diversity and Inclusion Board with 12 affinity groups
• Internal learning and development programs
• Enterprise-wide employee discounts

The Talent Team at Critical Mass is focused on ensuring we provide the best training,mentorship, and employee experience possible!  CM new hires & employees are the future of our organization, and we want to set you up for long-term success.  Inaneffort to do so, weexpect our teamto work from an office a minimum of4days a week.  The ask stems from our want to:

• Strengthen opportunity for continuous learning
• Improve collaboration and teamrelationships.
• Increase employee engagement

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.