Senior Front-End Developer for Communications

Critical Mass

Full-time Other-General
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Location
calgary, ab, Canada
Posted
June 04, 2026

Job Description

Join Critical Mass as a Senior Front-End Developer in our Communications team for a contract role. You will deliver pixel-perfect designs and optimize web performance for high-visibility projects.

This contract position lasts from July 1 to September 25, 2026. You'll collaborate with design, UX, and delivery teams to ensure seamless implementations for consumer-facing websites. Your expertise in HTML5, CSS3, and responsive design will be essential to meet tight deadlines and maintain high standards.

Key Responsibilities: • Deliver pixel-perfect front-end implementations for all devices • Collaborate closely with Design and UX for optimal results • Optimize web performance and ensure WCAG compliance • Produce clear code with thorough documentation • Jump into high-velocity production work with minimal onboarding

Requirements: • 5+ years' experience in HTML5 and CSS3 • Proficient in responsive design and pixel-perfect implementation • Expertise in Git and moder...