Top Full Stack Developer Jobs in Toronto

Design, develop, test, deploy, and maintain scalable web applications using Angular, .NET, and SQL Server. Participate throughout the software development lifecycle, collaborate with developers, designers, and stakeholders, follow coding and security standards, improve development processes, and stay current with Angular and .NET technologies. The role also involves RESTful API development, Git source control, Agile methodologies, and potentially Java, Elasticsearch, and Kafka.

Own complex, end-to-end full-stack features across Angular/TypeScript frontends, backend services, APIs, databases, and platform integrations. Lead architectural decisions, manage technical risks and dependencies, mentor engineers, coordinate delivery across teams, and improve testing, CI/CD, observability, and technical debt management. Serve as the squad’s technical anchor while partnering with Product, Design, QA, SRE, and platform engineering to deliver scalable customer-focused solutions.

Lead the architecture and technical direction of Mattermost’s core web platform across Go, React, and TypeScript. Own distributed systems, APIs, testing infrastructure, security-conscious design, and quality standards across multiple teams. Mentor senior engineers, influence technical strategy, partner with security and compliance leaders, guide AI-agentic engineering practices, and contribute to the open-source codebase.

Build full-stack AI and data-platform applications, including Python backend automation, agent-enabled workflows, MCP servers, metadata and data-contract tooling, and platform discovery interfaces. Design APIs, asynchronous services, schemas, microservices, testing, and CI/CD pipelines while integrating LLMs, graph data, cloud infrastructure, and governance platforms. Contribute to architecture, scalability, security, code quality, and client-focused consulting delivery.

Build and own end-to-end AI-enabled internal tools and workflows for game content production. Design data models, backend services, APIs, orchestration, human-in-the-loop review, and UIs. Implement reliable, observable systems with approval gates, retries, audit trails, and staged processing. Partner with cross-functional teams to turn ambiguous goals into production-ready solutions and maintain high quality, maintainability, and engineering standards.

Design, develop, and maintain large-scale Java-based microservices and APIs. Mentor junior engineers, lead small projects, perform advanced debugging/refactoring, ensure API security and quality, and collaborate with product and analytics.

Design, build, deploy, and maintain scalable features for GoodTime’s hiring intelligence platform. Investigate customer-reported bugs, improve performance and stability, collaborate with Product and Design, contribute to the technical roadmap, demonstrate new functionality, and own projects from concept through release. The role emphasizes JavaScript/TypeScript, React, customer-centric architecture, test-driven development, and continuous learning.

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.

Design, develop, test, deploy, and maintain scalable full-stack banking applications. Build Java Spring Boot and Python APIs, microservices, React interfaces, database integrations, and third-party integrations. Participate in code reviews, testing, debugging, performance optimization, solution design, and technical decision-making. Support CI/CD and DevOps practices while collaborating with product, architecture, business, and cross-functional teams to deliver secure digital transformation solutions.

Build and maintain production React/Redux front-ends and Java Spring Boot back-ends; use agentic AI tools across the SDLC for specs, coding, testing, reviews, and debugging; create APIs, integrations, automated tests, ensure production readiness, observability, security, and take ownership through release and production verification.

Build end-to-end features for Faire's Brand pillar, collaborating with product, design, and data. Work across backend, frontend, and mobile stacks to optimize performance and scalability, mentor engineers, and drive product improvements from discovery through implementation while using modern tooling and AI productivity aids.

Build and ship features for Cohere’s North AI workspace platform, develop autonomous agents that interact with sensitive enterprise data, and deploy highly performant, secure applications in low-resource environments. Collaborate with researchers to productionize advanced AI models and techniques while contributing across the full stack using Python and React.

As a Software Developer, you will design, develop, optimize, test, and maintain application code for Borrowell's web and mobile products, ensuring they meet technical and business requirements.

The Senior Engineer in Production Management will develop and implement software, applying best practices in a regulated environment and fostering team productivity through Agile methodologies.

The Senior Full Stack Developer will architect and implement scalable applications, design APIs, mentor others, and enhance developer experience across frontend and backend systems.

Design, develop, and integrate scalable applications using Angular for frontend and Java with Spring Boot for backend. Ensure seamless user experience and performance while collaborating with cross-functional teams.

The Java Full Stack Developer will develop backend services, design Microservices, and build responsive UIs with React.js, ensuring integration and performance optimization.

Design, build, and deploy AI-enabled enterprise systems utilizing Laravel, Java, and JavaScript, while ensuring SR &ED compliance and meeting strict deadlines.

Participate in full application lifecycle: feasibility, analysis, design, development, testing, implementation, and support. Provide estimates, risk assessment, security recommendations, consult with users, coach junior analysts, and act as SME with limited supervision.

Join a talented engineering team to build products at the intersection of AI and finance, focusing on the Fiscal.ai Terminal and financial data APIs.

The role involves collaboration with teams to develop solutions, maintain quality standards, and provide technical support, focusing on full-stack development using a variety of technologies.

The Full Stack Intermediate Software Developer will work on critical platform projects, focusing on product development, solution architecture, and coding best practices while collaborating with the team and ensuring application security.

Build full-stack web products with substantial LLM functionality, including agentic workflows, tool integrations, structured outputs, and orchestration logic. Translate PRDs and UX mockups into polished prototypes and production systems, making independent product, UX, and technical decisions. Own features through deployment and iteration while collaborating with founders, designers, and stakeholders. Balance rapid AI-assisted development with security, reliability, maintainability, testing, and observability.

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.

Lead the development of cloud-native enterprise applications using React and AWS, mentor team members, collaborate with stakeholders, and optimize solutions.