Top Full Stack Developer Jobs in Toronto

Lead design and delivery of scalable, secure solution architectures across cloud-based systems. Create ADRs and HLDs, participate in governance, collaborate with stakeholders, mentor teams, and ensure alignment with architectural and security standards.

Design and implement a low-latency, event-driven Order Management Platform for Cash Equities. Build Java microservices, implement FIX client and market-facing connectivity, improve test and deployment automation (CI/CD), collaborate with product owners and global teams, and optimize throughput and reliability.

The Full Stack Engineer will develop both frontend and backend solutions to empower business users in data analysis without technical skills, utilizing various technologies including NextJS and Python.

Seeking a Full-Stack Engineer with 3+ years of experience to develop and enhance data collaboration tools using LLMs, focusing on frontend and backend development.

The Full Stack Developer designs and develops web-based applications for investment management, working on both front-end and back-end systems. They also collaborate with business analysts and support the software development lifecycle including testing and deployment.

Develop and maintain web applications, collaborate on features, write efficient code, troubleshoot issues, and deploy in AWS.

The Full Stack Engineer will develop and maintain SaaS platforms, working on both front-end and back-end systems, collaborating with teams to deliver user-focused features and uphold high code quality through testing and performance monitoring.

The Full-Stack Developer will design, develop, and maintain integrations, APIs, and applications for MaintainX, focusing on high-quality, reliable code and collaboration with teams.

As a Full Stack Developer, you will design and maintain scalable applications, collaborate with teams, implement best practices, and mentor junior developers.

Build, implement and maintain enterprise-scale full‑stack applications for Financial Crimes Technology. Lead technical design, integration and development using backend systems, mentor team members, drive technology roadmaps, and deliver secure, scalable APIs and services to improve client experience.

Design, develop, and implement scalable eCommerce solutions using Commercetools across the full stack. Build and integrate front-end applications and APIs, collaborate with product, design, and engineering teams, and deliver high-quality, performant digital commerce experiences while working Eastern Time hours.

As a Full Stack Engineer, you'll develop and maintain features, expand product lines, and explore AI applications in security infrastructure.

The Software Engineer II will ship features to enhance Affirm's marketplace, supporting product development and collaborating with design and analytics teams while ensuring operational stability.

Build and own end-to-end full-stack features that surface fraud, deepfake, and identity signals. Design backend APIs and services, develop responsive React/TypeScript UIs, contribute to data pipelines and ATS integrations, and partner with design, product, and ML teams to ship high-quality enterprise recruiting workflows.

Senior individual-contributor full-stack engineer who architects and implements AI-augmented, cloud-ready, scalable financial applications. Leads architecture, champions SDD/TDD/BDD/DDD, integrates AI tools into the SDLC, mentors engineers, and optimizes Oracle and MongoDB interactions for performance and resilience.

Design, develop, and maintain full-stack Java-based SaaS applications. Build back-end services and REST APIs, implement responsive front-end UI, write automated tests, troubleshoot production issues, and collaborate on feature design, deployment, and monitoring.

The Full Stack Engineer will design, build, and maintain scalable web applications, impact customer onboarding and integrations, write and review code, and support technical improvements.

As a Full Stack Engineer, you'll own the development of features from design to production, collaborate with various teams, and continuously improve the platform by solving technical challenges.

Join a small team to improve a tech product aimed at upskilling users in MENA, working with JavaScript and Node.js in a collaborative remote environment.

Design, modernize, and maintain public-facing economic and investment web applications across frontend, backend, cloud, data integration, and CMS. Build SQL data pipelines, optimize performance, and support Azure-based infrastructure and Databricks to deliver scalable, data-driven solutions.

The AI Full Stack Developer will design and build AI applications using modern technologies, developing prototypes and production-ready systems while collaborating with various teams to leverage AI capabilities and enhance performance.

The role involves solving complex technical problems as a full-stack engineer, optimizing front-end performance, and collaborating closely with designers to enhance user experiences. Responsibilities include code and design reviews, documentation, and a strong emphasis on accessibility and using AI tools to improve workflows.

As a Software Engineer II, you'll implement critical features, collaborate with teams, maintain full stack systems, and ensure high-quality code in a dynamic environment.

As a Full-Stack Engineer at Labelbox, you will develop and maintain AI tools, focusing on data training systems, intermediate user interfaces, scalable architectures, and work in a collaborative, fast-paced environment.

You'll develop applications to optimize grocery store operations, ensuring efficient management of fresh food supply chains and supporting thousands of stores.