Top Full Stack Developer Jobs in Toronto

The Staff Full Stack Engineer will design, develop, and maintain scalable applications and APIs, lead architectural decisions, enhance advertising features using AI, and engage in technical discussions within an Agile team environment.

As a Senior Full Stack Engineer, you'll lead the design and implementation of features for eBay's advertising platform, focusing on both frontend and backend development while leveraging AI technologies.

The Full-Stack Software Engineer will develop new features, manage legacy projects, document workflows, and improve user products while contributing to a collaborative and agile environment.

As a Full Stack Developer at MaintainX, you'll collaborate with teams to develop features, optimize product systems, mentor engineers, and maintain code standards.

Lead the development and implementation of application systems, mentor developers, and drive technical excellence in software solutions supporting Citi's global operations.

Lead application systems analysis and programming activities by establishing new or revised application systems. Mentor developers, ensure adherence to coding standards, and manage complex application projects.

Lead application systems analysis and programming to enhance the Onboarding Master Central platform, mentor developers, and ensure technical excellence.

Design, develop, and maintain scalable applications using Java and React. Lead projects, implement microservices, and ensure high-quality code through reviews and optimizations.

The Senior Full Stack Developer will oversee client and server-side development, ensuring best practices, optimizing applications, and collaborating on projects across teams.

As an Entry Level Full Stack Developer, you will design, develop, and maintain scalable applications, collaborating with teams to enhance user experience and implement best practices in coding and testing.

Lead design and development of full-stack React/TypeScript and Java/Node.js applications for capital markets. Build UIs, backend services, APIs, and real-time features; troubleshoot production issues; provide technical leadership, mentor developers, collaborate with stakeholders, and ensure scalable, secure platforms.

As a Senior Full-Stack Engineer, lead the development of new ad features, build scalable APIs, and innovate user experiences for Hopper's advertising products.

Design, build, and iterate on fullstack systems for AI agents. Collaborate with teams to enhance UX and contribute to internal best practices while engaging in research related to AI technologies.

Develop software using AI-assisted coding tools, lead a team in modern software delivery, ensure code quality, and collaborate on new features.

As an Intermediate Developer at Petal, you will enhance software development using AI-assisted tools, lead adoption of best practices, conduct code reviews, ensure code quality, and monitor production features.

Design, develop, and maintain server-side applications, APIs, and database schemas with a focus on scalability, performance, testing, and reliability. Collaborate with front-end, product, and DevOps teams, participate in architecture decisions, troubleshoot production issues, and support CI/CD and deployments.

As a Senior Full-Stack Developer, you will develop and maintain Unity Ads dashboards, owning features from requirements to production, ensuring performance and reliability while collaborating across teams.

As a Senior Full Stack Software Engineer at Doxel, you will design and develop applications for project management, focusing on complex data handling and intuitive UI. Your role involves collaborating across teams and providing technical leadership in software projects.

Develop and manage full stack big data applications, provide technical leadership, and collaborate with cross-functional teams to ensure integrated system processes.

Lead the development of secure and scalable SaaS applications focusing on AI/ML integrations and backend systems, while collaborating across teams to optimize functionality and performance.

As a Senior Fullstack Engineer, you will design fullstack features for Spotify's generative UI platform, ensuring scalability and integration of LLM-powered systems, while collaborating with teams for high-impact outcomes.

Build and operate full-stack AI-powered agents integrated into HR and Finance workflows. Collaborate cross-functionally to design, implement, and run production services, mentor teammates, and apply strong engineering practices across the stack (frontend, backend, databases, cloud, containers, CI/CD, and observability).

The Senior Lead Java Fullstack Software Engineer leads application systems analysis and programming, develops methodologies, and oversees teams to meet technology goals and ensure compliance.

Design, build, test, and deliver production-grade web applications. Write maintainable, performant code, participate in code reviews and testing, research new technologies, and collaborate closely with the development team to improve workflows and processes.

Build and ship full-stack features for North, develop autonomous agents that access sensitive enterprise data, productionize state-of-the-art models, write minimal, secure low-resource code, and collaborate with researchers to deploy performant RAG/agentic applications while prioritizing security and user experience.