Top Front End Developer Jobs in Toronto

The Lead Frontend Engineer will drive front-end architecture and delivery for large-scale web applications, mentor engineers, and ensure high-performance user experiences.

You will own frontend systems, lead initiatives in UX and performance, uphold standards, and mentor engineers to enhance quality.

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.

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.

Lead the design and development of complex frontend systems at ClickUp, improving engineering velocity and mentoring other engineers.

Lead frontend engineering at ClickUp, defining architecture strategy, solving technical challenges, and mentoring teams for scalable web applications using Angular and React.

The Frontend Engineer will implement UI features, automate UI testing, and oversee production releases while focusing on user experience in the blockchain space.

As a Senior Software Engineer, you will lead frontend initiatives using React and React Native, collaborating with product and design to deliver user experiences, while mentoring teammates and shaping frontend architecture.

Build responsive, production-grade web UIs and data-dense dashboards from design prototypes. Implement interactive visualizations, integrate with REST/GraphQL backends, manage state and performance, write frontend tests, and collaborate with designers, backend and data engineers to deliver polished, accessible, and performant cybersecurity and analytics products.

Build and own frontend surfaces for trading and DeFi products, designing scalable real-time UIs, improving UX, setting frontend standards, collaborating on SDKs/APIs, and contributing to tooling, testing, and CI/CD.

Build dynamic, user-facing features using React/JavaScript and GraphQL APIs as part of a cross-functional agile team. Contribute to full-stack initiatives, develop low-latency transactional services with Node.js, write SQL for real-time analysis, author accessible markup, follow unit testing and CI practices, and collaborate on product design decisions.

Design and implement developer-facing UI from Figma to production using Hotwire (Turbo + Stimulus) and ViewComponents. Own the dashboard, API playgrounds, docs, marketing site, and data visualization. Optimize performance and bundle size, maintain a coherent component system, and ship polished, production-ready front-end with tests and CI/CD.

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

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.

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

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.

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 high-quality, performant front-end features in React and TypeScript. Partner with Product and Design to translate user needs, grow a reusable component library and design system, ensure accessibility and performance, contribute to architecture and backend integration when needed, and maintain code quality through reviews and testing.

Develop and maintain full stack software solutions for lidar products, manage cloud infrastructure, and optimize performance in a Linux environment.

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.

The Staff Front End Engineer will lead technical direction, improve app features, mentor engineers, and collaborate with cross-functional teams using React Native.

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

The Front-End Developer II will build a new web application for ShareGate Migrate, focusing on accessible interfaces and integrating Microsoft APIs while collaborating in a cross-functional team.

As a Frontend Software Engineer, you will drive impactful initiatives, collaborate with teams, deliver features, and contribute to product vision with a focus on scale and performance.