Senior Software Developer Longueuil

Senior Developer - Montreal (3 days a week on site) - CAD$110,000 + 8% bonus SaaS Platform | Ruby on Rails | AI-Enabled Product Development A growing SaaS technology business is looking for a Senior Developer to play a key role in the evolution of a well-established web platform used within a highly regulated environment. This is a hands‑on senior engineering role with influence across architecture, product development, technical direction and AI‑enabled innovation. You’ll work closely with engineering leadership while mentoring developers and helping shape best practice across the wider team. The environment is heavily product‑focused and suited to someone who enjoys solving complex technical challenges while contributing to longer‑term platform improvement. What you’ll be doing Developing and enhancing scalable SaaS applications Leading implementation of complex technical features Mentoring developers and supporting engineering best practice Contributing to architecture and technical decision‑making Building and integrating APIs and external services Exploring AI‑enabled functionality including automation, summarisation and intelligent workflows Collaborating with product and engineering teams in an agile workplace Tech stack Ruby / Ruby on Rails JavaScript React / Vue / AngularJS PostgreSQL REST APIs Git / Jira What we’re looking for Strong commercial Ruby on Rails experience Background in SaaS or product‑led environments Experience leading technical work and mentoring engineers Strong understanding of up‑to‑date web technologies Exposure to AI‑enabled product functionality or LLM concepts Strong communication and cooperative skills This is an excellent prospect to join a team‑oriented engineering workplace where you can influence technical direction and contribute to meaningful product innovation. Apply on Kit Job: kitjob.ca/job/2prgci