Top Front End Developer Jobs in Toronto

The Senior Staff Software Engineer will lead web platform architecture and development, mentoring engineers while driving improvements in infrastructure, web development strategy, and AI tool integration.

Build and scale the frontend of a B2B SaaS workflow and form-builder platform. Design and implement interactive, accessible UI features, optimize frontend performance, contribute to frontend architecture, and collaborate with product, design, and backend teams to deliver production-ready experiences.

Develop modern web applications focusing on UI components using React while ensuring performance, accessibility, and cross-browser compatibility.

Lead frontend technical strategy and deliver high-impact web, iOS, and Android features using React and TypeScript. Drive cross-team initiatives, modernize web code and design systems, build tooling (codemods, AI agent skills), ensure operational reliability (monitoring, on-call, playbooks), and mentor engineers while collaborating with product, design, and analytics.

As a Frontend Engineer, you will design and build responsive UIs, integrate APIs, mentor peers, and collaborate across teams to ensure optimal user experiences.

The Front End Engineer will work with Angular, Bootstrap, and PrimeNG to build interfaces, implement GoJS for diagrams, conduct E2E testing with Playwright, and manage unit testing with Jasmin. Responsibilities include deploying applications using micro-frontends architecture, developing a back-end with NodeJS on Docker, and integrating APIs using the BFF approach.

The Staff Application Engineer will develop critical application features, ensure code quality, and work collaboratively to impact sales compensation solutions.

Develop and deliver code for new features using Angular, creating responsive user interfaces, collaborating with teams, and optimizing performance.

Build sophisticated user interfaces for AI and blockchain interactions, including monitoring tools and decentralized application interfaces, while collaborating across teams for seamless user experience.

Join Betr as a Senior Frontend Engineer to develop mobile applications using React Native and TypeScript, focusing on sportsbooks and gaming products, while optimizing performance and handling real-time data.

Build, maintain and scale the e-commerce front end across desktop and mobile. Collaborate with design, marketing, and ops to deliver features from concept to launch, own technical infrastructure, ensure high-quality UX and customer satisfaction, and support A/B testing and DevOps workflows.

The Frontend Engineer will build web interfaces for a healthcare APIs clearinghouse while collaborating across teams to ensure high-quality, responsive design and functionality.

Build scalable, accessible frontend components and UX for an AI-native data platform using React and Next.js. Implement dashboards, agent interfaces, and multi-tenant admin panels; integrate real-time and streaming data, APIs, and visualize high-dimensional data. Contribute to component libraries, design systems, and ship production-ready, responsive features.

Design and implement frontend applications using JS, CSS, React, and Flutter. Collaborate on technical specs and contribute to documentation, ensuring user experience and performance.

As a Front End Engineer Tech Lead, you'll design and develop frameworks, provide technical leadership, collaborate across teams, and drive architecture decisions.

The Sr. Staff Frontend Engineer will lead complex initiatives, drive technical direction, and mentor others while focusing on high-quality code and system design for eBay's live shopping experience.

Lead and own the frontend for a perpetuals exchange using TypeScript and React. Design order entry, positions, pricing displays, and charts, make trader-focused UX decisions, and operate autonomously on a small, fast-moving team.

Build and maintain responsive, accessible frontend interfaces using React and TypeScript. Collaborate with product, design, and backend teams to launch performant, scalable UIs, create reusable component libraries, define APIs, mentor engineers, and drive frontend best practices.

Own and deliver high-availability, low-latency Trust & Safety systems across backend, web, and mobile. Lead engineering delivery, collaborate with product/design/analytics, improve operational metrics and on-call reliability, set code and design standards, and mentor teammates.

Founding front-end engineer to design and build Flick's editor UI (canvas, timeline, node graph, playback). Lead architecture, prototype creative workflows, optimize complex UX interactions, establish code quality and performance practices, collaborate with design/product/AI backend, and drive key technical and product decisions.

You will drive the product's frontend look and feel, build UIs for complex data, ensure consistent designs, and enhance development velocity. This role requires strong React/TypeScript skills, a builder's mindset, and a focus on performance and design sensibility.

As a Frontend Software Engineer, you will design, build, and maintain user-friendly features, collaborate with teams, and contribute to the frontend architecture of an AI-powered business planning platform.

Lead architecture and development of fast, accessible web and mobile UIs using React and TypeScript. Build cross-platform UI components, implement state management and data fetching, champion accessibility and performance, collaborate with backend/product/design, mentor engineers, and use Rust when performance demands. Support legacy and new plans and scale systems for millions of users.

Build and maintain responsive user-facing web applications using React, JavaScript, HTML5 and CSS3. Implement UI components from designs, consume RESTful APIs, collaborate with backend (.NET) and SQL teams, perform testing, debugging and performance tuning, participate in code reviews, and support application deployment and user-facing issue resolution while adhering to firm policies and compliance requirements.

Develop mobile-first, responsive Vue.js frontends focused on performance and UX. Build frontend management systems, participate in code reviews and team ceremonies, mentor junior engineers, and collaborate with backend teams.