Top Web Developer Jobs in Toronto

Design and develop modern, responsive React and TypeScript web applications for complex, real-time financial data. Build analytics and charting interfaces, integrate third-party design systems, and use grid technologies and WebSockets for dynamic experiences. Collaborate with design, product, and technology teams to deliver scalable, maintainable user interfaces. Financial services, capital markets, real-time pricing, risk systems, and enterprise front-end experience are advantageous.

Build and optimize high-performance marketing websites across Next.js, React, Sanity, WordPress, PHP, and Twig. Lead A/B and multivariate experimentation, CRO infrastructure, accessibility, SEO, component libraries, and AI-assisted development workflows. Set technical standards, mentor developers, collaborate with CRO, analytics, design, and marketing teams, and improve experimentation velocity, statistical integrity, site performance, and AI-search readiness.

Lead architecture and technical direction for Thunderbird’s web Services products, including calendar and secure file storage offerings. Design scalable systems, write code, build prototypes, establish software patterns, and contribute across development, testing, monitoring, and maintenance. Solve ambiguous technical and product problems, develop analytics and infrastructure, mentor engineers, collaborate with distributed cross-functional and open-source teams, and help improve user and subscriber growth.

Research and reverse-engineer web anti-automation systems, including browser detection, challenge flows, fingerprinting, and obfuscated JavaScript. Build and deploy browser automation, diagnostic, and monitoring infrastructure that improves scraping reliability across a large crawling fleet. Measure scrape success, investigate regressions, and ship production fixes quickly while collaborating with platform engineers.

Develops and maintains enterprise websites and intranet solutions using WordPress, PHP, JavaScript, HTML, and CSS. Translates UX/UI specifications into responsive web components, templates, graphics, and navigation. Performs content migration, accessibility testing, information architecture, security implementation, documentation, and user training. Collaborates with stakeholders and technical teams across website projects, supports cloud and open-source technologies, and contributes to content governance, technical specifications, testing, deployment, and knowledge transfer.

Software Developer Interns build and test web products used by millions, architect React features, create reusable UI paradigms, develop tools and frameworks, and support brokerage operations. Interns work with mentors and cross-functional partners from scoping through production, using technologies including JavaScript, React, TypeScript, Redux, Django, React Native, and Go. The role is based in Toronto with in-person attendance at least three days weekly.

Implement and ship approved UX improvements for Firefox screen, window, and tab sharing. Build accessible, tested, and localizable browser UI in a large codebase; collaborate with UX and QA, support testing with web conferencing services, and contribute through public code review. The role requires production front-end experience with JavaScript, HTML, and CSS, automated UI testing, rapid onboarding to mature codebases, and effective asynchronous communication.

Lead architecture and hands-on development for a zero-to-one, real-time content platform. Build scalable backend services, collaborative editing and synchronization systems, frontend visual editing experiences, APIs, publishing workflows, and developer extension layers. Partner with product and design, establish engineering standards, make build-versus-buy decisions, mentor engineers, and engage customers to validate architectural choices.

Develop and maintain 1Password browser extension features for filling, saving, and unified sign-in experiences. Responsibilities include coding, testing, debugging, documentation, code reviews, production support, planning, cross-functional collaboration, mentoring, and on-call rotation. The role requires TypeScript and React proficiency, with browser extension and web API experience preferred.

Develop and maintain high-performance web frontend applications and backend services for a collaborative XR platform. Lead complex cross-team projects, shape cloud and web architecture, optimize browser and XR headset performance, and translate business requirements into product features. The role requires expertise in JavaScript, React, TypeScript, browser performance, distributed systems, real-time communication, AWS, and Electron, with preferred experience in 3D web technologies, cloud-native architecture, databases, containers, game engines, CI/CD, and observability.

Develop and maintain cloud-based full-stack web applications using Angular, TypeScript, ASP.NET Core, Entity Framework Core, and Azure. Responsibilities include building responsive interfaces, developing RESTful APIs, writing unit tests, monitoring Application Insights, resolving defects, and delivering new platform functionality.

Drive quality assurance for web features from technical handoff through production release. Responsibilities include test planning, test case creation, functional and exploratory testing, regression, UI/UX, cross-browser, responsive, API, and end-to-end testing. Support releases through build validation and monitoring, document and review tests, collaborate with product and engineering teams, improve QA metrics, and optionally contribute to test automation.

Build and ship full-stack features for a real-time collaborative content platform, spanning backend services, APIs, and frontend systems. Contribute to architecture and technical design, write tested and maintainable code, collaborate with product and design, integrate AI tools and capabilities, participate in code reviews, and help shape an early-stage product.

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.

Design and develop next-generation web engine; innovate architecture for performance and resource consumption, with insights on web technologies.

Seeking a Web Developer with 3-5 years of experience in object-oriented PHP, MVC frameworks like Laravel, and SQL. Responsibilities include software engineering patterns and Git workflow, with bonus for RESTful API and test-driven development experience.

As a Front-End Web Developer, design and maintain responsive web applications, collaborate with designers, optimize performance, and work with APIs.

Lead development of web tools for autonomous driving, mentor engineers, and collaborate on technical architecture, focusing on responsive applications and cloud infrastructure.

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.

Develop and maintain responsive enterprise web application interfaces using modern frontend technologies. Build reusable components, integrate RESTful APIs, troubleshoot usability and performance issues, and collaborate with backend, UX, product, QA, DevOps, and globally distributed teams. Participate in code reviews and Agile software development while supporting AI-powered People Operations applications.

Own and develop Arena’s public web surfaces, including the blog, marketing pages, and leaderboard UI. Build with Next.js, React, TypeScript, Sanity CMS, and the company design system. Improve performance, accessibility, SEO, structured data, internationalization, and data visualization. Create CMS models and publishing tools that enable marketing teams to ship independently while collaborating closely with designers, marketers, and engineers.

Design, develop, and maintain scalable full-stack web applications. Collaborate with stakeholders and cross-functional teams to translate requirements into technical solutions, modernize legacy systems, implement APIs and integrations, troubleshoot production issues, participate in architecture and code reviews, and drive CI/CD and DevOps practices to deliver reliable, high-quality enterprise software.

Leads frontend architecture and engineering for large-scale consumer web applications. Defines standards, reusable patterns, and headless API architectures using ReactJS, TypeScript, Next.js, and GraphQL. Drives performance, Core Web Vitals, accessibility, security, experimentation, design systems, and global scalability through CDN and edge technologies. Partners cross-functionally, mentors engineers, influences architecture across teams, and guides technical decisions for reliable, accessible, high-performing digital experiences.

Lead technical direction of Ground News web properties to drive subscriber conversion. Own architecture, experimentation infrastructure, migrations (marketing-tech), performance, accessibility, SEO, Core Web Vitals, safe rollout practices, and enable non-engineers to run experiments without engineering support.

Design, develop, test, maintain and re-architect web and mobile applications using .NET/C#. Build and maintain SQL Server databases and BI components, support production, ensure security, document architecture, lead technical decisions, and mentor team members.