The Senior Front-End Developer (SFED) is responsible for designing and writing code and providing support to web applications. The SFED is able to work independently, assuming ownership for the design, interface and programming of simple and complex web sites.  The SFED should also be able to provide solutions and estimates for their tasks in support of his/her Tech Lead. 

The SFED works with web applications and various front-end technologies, including HTML5, CSS, and JavaScript, and is comfortable with content management systems. 

You will:

• Developing web applications that follow the latest web standards and conform with leading-edge front-end technologies 
• Work closely with creative, business, technology, and QA teams to ensure the solution meets the requirements and performance targets (mobile and desktop). 
• Own the development of web applications and ensure they follow the overall technical architecture and design established by the technical lead 
• Implement user and business requirements which are composed of multiple development activities 
• Maintain up-to-date and complete documentation on projects as dictated by the capability’s guidelines and best practices 
• Debug or troubleshoots complex issues in existing web applications 
• Proactively provide feedback on policies and procedures when an opportunity for improvement exists 
• Proactively provide guidance and support to other members of the in fulfill their tasks and improvement their performance and overall technical skills 

You have:

• At least 3+ years of experience working with Front-End technologies (HTML/CSS/JavaScript)
• Excellent knowledge of recent development practices (Mobile First, MVC, Object Oriented development)
• Working experience with email campaigns (from scratch and templates)
• Work experience with Sharepoint. 
• Fluency in at least one primary mainstream JavaScript library and framework (eg. jQuery, Angular, React, VueJS, etc...)
• Work experience with cross-browser and cross-device compatibility
• Work experience with automation and pre-processing tools (eg. Gulp, Grunt, SASS, LESS)
• Work experience integrating web solutions with external web services
• Knowledge of design patterns (e.g., model-view-controller, observer, object oriented, etc.) 
• Experience pre-processing CSS styling (SASS, LESS)
• Fluency with data transfer formats and protocols popular in web applications (eg. JSON, XML, HTTP) 
• Capable of writing code compliant with modern accessibility (eg. ARIA, WCAG, Microformats, ADA, RDF) and SEO guidelines and best practices
• Capable of working with version control systems (SVN, GIT, Mercurial)
• Capable of building proof-of-concept prototypes 
• Capable of troubleshooting, debugging, and doing root cause analysis of web application issues \
• BS in Computer Science or related technical discipline; or equivalent experience as Software Developer
• Experience in Digital Agencies projects, Web development projects, SCRUM/Agile software projects) 

What We Offer:

• Maternity and parental leave extra days
• Competitive benefits packages
• Vacation, compassionate leave, sick days, and flex days
• Access to online services for families and new parents
• End-of-year closure days (not deducted from vacation balance)
• Diversity and Inclusion Board with 12 affinity groups
• Internal learning and development programs
• Enterprise-wide employee discounts
• And more…

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

The Talent Team at Critical Mass focuses on providing the best training, onboarding, and employee experience possible! Our new hires and employees are the future of our organization, and we want to set you up for long-term success. To that end, we expect our team to work from an office a minimum of three days a week.

The ask stems from our want to:

Strengthen opportunity for continuous learningImprove collaboration and team relationships.Increase employee engagement

This work model balances the need for individual flexibility while maintaining the relentless customer focus we provide at CM. 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 that is committed to diversity and inclusion in the workplace. We do not tolerate discrimination on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status. If you are an individual with disabilities who would like to request an accommodation, please reach out to accommodations@criticalmass.com.

We are committed to fostering diversity, equity, and inclusion within our pool of candidates, with a target of achieving at least 50% representation from underrepresented communities.

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#avoidIf Canada based: https://www.canada.ca/en/services/finance/consumer-affairs.htmlIf U.K. based: https://www.gov.uk/consumer-protection-rightsIf Costa Rica based: https://www.consumo.go.cr/educacion_consumidor/consejos_practicos.aspx