Senior Full Stack Developer (Contractor)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Full Stack Developer (Contractor) based in Canada. This is a hands-on engineering role focused primarily on building intuitive, performant, and accessible digital experiences.You will take ownership of user-facing features from design handoff through deployment while contributing to backend development when needed.The role combines strong front-end expertise with practical experience across APIs and Ruby on Rails-based services.You will work closely with product managers, designers, and engineers to turn ideas into polished, scalable product experiences.Performance, accessibility, maintainability, and usability will be central to the work you deliver.As a senior contributor, you will also help establish engineering standards, review code, mentor teammates, and improve technical practices.The environment values ownership, thoughtful collaboration, continuous learning, and a strong user-first mindset.