Top Javascript Jobs in Montreal

Build and lead across Tetrix’s SaaS product, data pipelines, AI agents, and telemetry infrastructure using Python and JavaScript. Set technical direction, make architectural decisions, shape product strategy, collaborate with clients, establish secure and scalable engineering practices, mentor engineers, and help build a high-performing team.

Senior front-end developer for CBC/Radio-Canada OTT platforms (CBC Gem, ICI TOU.TV). Build and optimize high-performance React/Next.js components (audio/video players), ensure code quality, participate in Agile ceremonies, code reviews, deployments, and propose technical solutions in a bilingual environment.

Build end-to-end features in a JS/TS stack, designing scalable backend services and responsive real-time frontends. Improve observability, performance, and reliability, collaborate with product/design, and own full-stack implementation from APIs and data models to UI.

Lead design and development of a high-performance Web SDK for device fingerprinting and behavior analytics. Implement algorithms for fingerprints and interaction capture, optimize cross-browser performance, build CI/CD and automated cross-browser tests, ensure data privacy/security, mentor engineers, conduct code reviews, and collaborate with product and QA to deliver scalable, maintainable SDKs.

Take end-to-end ownership of backend features and SaaS services in a microservices architecture. Design, implement, deploy, and operate scalable, reliable Node.js services. Work with Redis Streams, MongoDB, Kubernetes, and ensure test coverage, performance tuning, and collaboration with cross-functional teams.

Develop and maintain rich GUI components for a distributed, service-oriented Java platform using JavaScript/ExtJS, HTML/CSS. Build and integrate web services (REST/SOAP/JSON/XML), collaborate in Agile teams, and work with Java backend technologies (Core Java, Spring/Hibernate desirable).

Senior backend developer responsible for defining client needs, developing, maintaining and optimizing backend applications, creating tests and functional validation, reporting progress, providing maintenance and user support, and integrating systems (databases, CRM/Salesforce) on cloud/containerized infrastructures.

The role involves owning product feature development, participating in system design, and maintaining software performance in an agile setting.

The Frontend Javascript Engineer will develop web applications focusing on user experience, collaborate with a team, and work with machine learning and computer vision technologies.

Build and maintain Supabase JS/TS SDKs used across runtimes. Author libraries, manage public repos, triage issues, review PRs, keep CI/release automation healthy, own type experience, support realtime/WebSocket semantics, ensure cross-runtime compatibility, write RFCs, docs, and migration guides, and improve SDKs for AI coding agents.

Build and maintain the SaaS product, data pipelines, AI agents, and telemetry; contribute to product and tech strategy; work with customers; set engineering best practices and mentor teammates.