Top Front End Developer Jobs in Toronto

Build and improve reliable, scalable frontend experiences for Affirm’s pre-checkout products, including Affirm.js, promotional messaging, experimentation, and developer-facing tooling. Use browser debugging, monitoring, metrics, and testing tools to maintain accessible, performant cross-browser experiences. Collaborate with engineers and stakeholders, contribute to code reviews, troubleshoot operational issues, and write clear, well-tested, extensible code.

Own and deliver high-availability authentication, verification, and fraud experiences across web, backend, and mobile interfaces. Lead quarterly goals, technical planning, system delivery, code quality, operational availability, and on-call support. Collaborate with product, design, and analytics stakeholders, resolve complex technical and business issues, mentor engineers, and promote engineering standards. The role requires expertise in React or Vue, JavaScript or TypeScript, large codebases, scalable architecture, and effective communication.

Develop and improve front-end ASIC/SoC build methodologies, CAD flows, and automation from RTL development through implementation handoff. Build production-quality infrastructure for RTL quality, verification, IP management, regression, and release readiness. Collaborate with engineering teams and EDA vendors to resolve bottlenecks, evaluate AI and automation technologies, and drive methodology adoption across projects.

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

Develop and maintain Django-based manufacturing applications, owning frontend interfaces and delivering features across the full stack. Build JavaScript interfaces, REST integrations, live dashboards with Django Channels, and reliable production workflows. Refactor legacy code, improve testing, document processes, train shop-floor users, gather requirements, and support safe software rollouts across departments. Regular production-floor presence is required, along with sound use of AI-assisted development tools.

Lead frontend engineering for Affirm’s consumer web experiences using React and TypeScript. Own quarterly team goals, deliver major product features, modernize web architecture and design systems, and develop tools such as codemods and AI agent skills. Collaborate with product, design, analytics, and engineering teams; establish quality standards; monitor availability and metrics; support on-call operations; resolve technical issues; and mentor engineers.

Build and maintain accessible React component libraries, design tokens, tooling, documentation, and AI-enabled development capabilities. Own reusable APIs, accessibility compliance, testing, release automation, and adoption across enterprise engineering teams. Collaborate with designers, architects, and product teams while supporting a large developer community and evolving shared component capabilities for web, mobile, and future platforms.

Build and lead frontend-focused full-stack features for Pebl’s conversational AI assistant. Design polished AI-native experiences involving streaming responses, dynamic interfaces, error recovery, fallback states, tool calling, and human-in-the-loop interactions. Develop TypeScript and React frontend components, backend APIs, and integrations supporting agentic workflows. Apply prompt design, evaluation, observability, and troubleshooting to improve AI behavior. Mentor engineers, participate in technical reviews, and deliver high-quality products through rapid iteration.

Develop full-stack enterprise application features using TypeScript, React, C#, and .NET, with emphasis on user experience, performance, scalability, and maintainability. Design and present technical solutions, build automated tests, prototype solutions, collaborate with engineering, product, and UX teams, and adopt emerging technologies including generative AI. The role also involves leading complex feature development, creating reliable APIs, and mentoring junior engineers.

Develop responsive, production-ready front-end applications for a modern document authoring platform. Translate UX/UI and Figma designs into accessible interfaces, build authoring workflows, integrate RESTful APIs and backend services, and support AWS-hosted environments. The role includes front-end architecture, component-based development, state management, troubleshooting, performance optimization, code reviews, and cross-functional collaboration while delivering a scalable MVP in an Agile environment.

Build and maintain responsive, performant Angular front-end applications for Smile’s healthcare data platform. Responsibilities include translating designs into technical solutions, developing components, writing unit tests and documentation, resolving defects, participating in code reviews and pair programming, contributing to architecture and coding standards, mentoring developers, and collaborating with cross-functional teams and clients.

Build and architect complex customer-facing frontend experiences using Angular and TypeScript. Own features from requirements through architecture, API integration, testing, observability, performance, accessibility, and deployment. Collaborate across backend, product, design, QA, SRE, and platform teams, including troubleshooting PHP and Node.js services. Serve as a technical anchor by setting frontend direction, coordinating delivery, mentoring engineers, and improving engineering standards and system scalability.

Build and scale consumer-facing frontend experiences for patient sign-up, care flows, and account management across web and mobile platforms. Own frontend architecture and feature development from concept through production, ensure cross-browser and device compatibility, write clean and well-tested React code, and collaborate on feature design, architecture, and delivery in an on-site product and engineering environment.

Design and develop scalable, secure frontend web applications for connected embedded systems. Lead frontend architecture, collaborate with backend/embedded teams, implement device provisioning, telemetry visualization, and remote management UIs. Optimize performance, accessibility, and maintainability; mentor engineers, participate in reviews, and drive frontend best practices.

Design and deliver scalable full-stack applications using Java, Spring Boot, Angular, React, and Next.js. Build secure REST APIs, responsive accessible interfaces, and maintainable tested code. Collaborate with product, design, platform, and engineering teams on end-to-end features. Contribute to architecture, code reviews, CI/CD, cloud-native deployment, automated testing, and continuous process improvement while owning delivery risks and technical trade-offs.

Leads the design and development of complex frontend systems and product features using Angular and React. Architects scalable frontend patterns, improves performance and engineering velocity, drives testing and code-quality practices, and makes technical decisions across teams. The role owns major initiatives, partners cross-functionally with backend, product, design, integrations, and QA, and mentors engineers while advancing frontend architecture and collaboration.

Build and improve ClickUp’s core product experiences using Angular and React. Responsibilities include architecting reusable frontend code, collaborating with product, design, backend, integrations, and QA teams, addressing performance and usability issues, maintaining unit and end-to-end tests, resolving bugs, following state-management patterns, and delivering projects in a fast-paced environment. The role also involves mentoring teammates and improving engineering quality.

Lead the long-term frontend architecture strategy across ClickUp’s product surfaces. Design scalable, performant systems using Angular and React, solve cross-team challenges involving performance and state management, establish quality and testing standards, mentor senior engineers, and influence technical roadmaps and organizational decisions. This is a hands-on technical leadership role requiring strong architectural judgment, collaboration, and expertise in large-scale web applications.

Build and maintain reusable frontend components and design-system infrastructure across Faire’s web surfaces. Champion accessibility, performance, testing, and quality standards; collaborate with Product Design and engineering teams; guide frontend architecture; use AI-assisted tooling; lead technical projects; mentor engineers; and participate in design and code reviews.

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.

Design and implement scalable, accessible, high-performance front-end features. Write clean, testable code, fix defects, improve the codebase, and mentor teammates. Collaborate with Product, Design, QA, and stakeholders to translate requirements into elegant UI components within an agile environment.

Build and lead large-scale frontend projects for enterprise account management, integrations, settings, and Censys Platform experiences. Partner with Design and Product, make architectural decisions, and deliver accessible, performant, maintainable interfaces. Establish strong standards for unit, integration, and end-to-end testing, component architecture, accessibility, state management, data fetching, and frontend performance. Collaborate with backend engineers and contribute to shared component libraries, data visualizations, and complex grid interfaces.

As a Front-End Web Developer, you'll create responsive web applications, collaborate with designers and back-end developers, optimize user interfaces, and implement reusable components.

Build and own user-facing web experiences with a front-end focus using React, Next.js, and TypeScript. Work across the full stack (Node.js/NestJS), design and integrate REST APIs, collaborate with product and design, run growth experiments, ensure accessibility/performance, write tests, support production through on-call rotations, and contribute to payments and banking integrations.

Lead frontend design and delivery of AI product experiences using React and TypeScript, mentor engineers, set frontend standards, use AI-assisted tooling, and contribute to backend services in Go and product roadmaps.