Top Full Stack Developer Jobs in Toronto

Build and maintain scalable, cloud-native full‑stack features and services. Collaborate with Product and Design to prototype, deliver, and document solutions. Work across backend and frontend, apply modern engineering practices, mentor teammates, and own product domains to improve transit operations.

The role involves leading the design and development of core platform features, building scalable backend services, managing front-end features, and collaborating across teams to enhance the contract lifecycle management software.

Build and scale a full-stack Next.js application tracking PRs, CI health, test parity, and benchmarks across AI accelerator open-source projects. Integrate GitHub APIs and webhooks, design PR/metrics schemas, visualize results, and produce technical digests and reports on cross-accelerator parity and performance trends.

Lead technical delivery for a marketing web platform, maintaining legacy CMSs and migrating to Next.js + Contentstack. Build modular UI components, integrate Contentstack with enterprise systems (Okta, Mulesoft, RWS, Coveo), implement analytics and SEO, manage deployments/CDN/DNS, and champion AI-assisted development to improve team velocity and code quality.

The Lead Full Stack Java Developer oversees application systems analysis and programming, leads development teams, and ensures integration of business functions.

Join the Inference Core Model Bringup team to bring up ML models on Cerebras CSX systems, focusing on performance, optimization, and debugging.

The Senior Full-Stack Developer will work closely with the co-founders to develop telehealth features, focusing on user-friendly software that's reliable and robust. They'll participate in code testing, deployment, and feature design within a collaborative office environment.

Design, build, and maintain backend services and REST APIs with NestJS/TypeScript and MySQL; implement React/Tailwind UI components; integrate frontend and backend; support Kafka messaging; collaborate with product/design using Figma; use AI coding tools to accelerate development and work in an agile cross-functional team.

Seeking a Full Stack Engineer to design, build, and scale consumer-facing applications for Goldin, focusing on cloud-native architectures, AWS, and APIs while collaborating with cross-functional teams.

The role involves designing and building scalable software architectures, owning features end-to-end, collaborating across teams, and improving application performance.

As a Full Stack Engineer, you will design, build and scale cloud-native applications on AWS, focusing on consumer experiences and collaboration with various teams.

Design, build, and deploy scalable full-stack seller experiences using React, Node.js, and TypeScript. Own APIs, microservices, data models, CI/CD, observability, and production support. Collaborate with product and engineering teams, optimize performance and developer productivity, create reusable components, and mentor engineers to raise technical standards.

Design, build, and deploy scalable full-stack applications and APIs using React, Node.js, and TypeScript. Collaborate with cross-functional partners to deliver seller experiences, create reusable components and shared libraries, and improve developer productivity. Ensure software quality, observability, and operational excellence through testing, CI/CD, and production support. Mentor engineers and drive technical decisions to raise engineering standards across the team.

Build and scale growth systems across the stack to drive retailer acquisition, onboarding, and engagement. Own end-to-end projects, implement experimentation and personalization infrastructure, design reliable services and APIs, instrument and analyze metrics with Data Science, and optimize user experiences for performance and conversion.

As a Staff Full Stack Developer, you will lead technical strategy and oversee both frontend and backend developments, ensuring integration and performance of Dialogue's ServiceOS while mentoring the engineering team.

Design, develop, test and maintain microservices-based web applications. Work with business to clarify requirements, produce designs, write code (Java/SpringBoot, SPA frameworks), provide production support, documentation, and on-call rotation. Ensure quality, maintainability, and CI/CD automation.

Build end-to-end features in a JS/TS stack, designing scalable backend services and responsive real-time frontends. Improve observability, performance, and reliability, collaborate with product/design, and own full-stack implementation from APIs and data models to UI.

Build and maintain backend services, REST APIs, databases, customer-facing products, internal tools, and data platforms. Improve database architecture, performance, reliability, scaling, and migrations. Contribute to full-stack development, AWS infrastructure, serverless systems, CI/CD, deployments, monitoring, and architectural decisions while collaborating with product, design, and leadership.

Join as the founding full-stack engineer to extend a TypeScript React/Next.js prototype, design product features, integrate AI/OCR, write tests and infrastructure, talk to users, and iterate quickly to drive growth.

Design, develop, test, and implement MERN stack application enhancements, bug fixes, and platform upgrades. Maintain solution architecture and operational documentation, support governance/security/privacy reviews, ensure AODA accessibility compliance, participate in Agile delivery, and provide knowledge transfer for operational continuity.

Build, ship, and maintain full-stack features for North: large-scale file uploads, shared knowledge bases, agent extensibility, and data-sync pipelines. Own end-to-end design, implementation, testing, launch, and iteration while working closely with Product, UX, and modeling teams. Prioritize security, performance, and mentoring.

As a Senior Full Stack Software Engineer, you will build and improve products, create user interfaces and APIs, and collaborate with various teams to enhance the customer experience.

Senior full-stack engineer owning backend services, APIs and data models and contributing to frontend dashboards. Deliver end-to-end features, drive architecture and quality, collaborate with Product/Design, solve reliability and performance issues, and mentor cross-team technical standards.

Develop and maintain enterprise full-stack applications across the software development lifecycle. Responsibilities include building front-end interfaces and back-end services, developing REST and SOAP APIs, designing data pipelines and database integrations, testing and troubleshooting applications, supporting deployments and migrations, and collaborating with business and IT stakeholders. The role requires React, Angular, JavaScript, Java, Oracle, SQL Server, web application technologies, DevOps practices, and Agile/Scrum experience.

Build and own enterprise AI SaaS features end-to-end, including AI agents, backend services, APIs, and web UIs. Collaborate with engineering, product, design, and business leaders to ship customer-facing features and internal tools. The role requires production software experience, strong product judgment, autonomy, cross-functional communication, and comfort working across frontend and backend technologies in an ambiguous, fast-moving environment.