Top Full Stack Developer Jobs in Toronto

Design, build, and maintain full stack web applications and APIs for Investment Banking and Global Markets. Implement responsive React UIs, backend services (FastAPI/Flask/Node.js), data pipelines, microservices, and real-time data handling. Integrate generative AI/LLM APIs, ensure performance, security, testing, and monitoring, and collaborate with data scientists and stakeholders to deliver scalable, production-grade solutions.

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.

Build and maintain enterprise full-stack risk and finance applications using Java and React. Develop scalable backend services, responsive interfaces, RESTful microservices, and event-driven systems supporting credit risk, capital reporting, and regulatory programs. Lead architecture, coding standards, delivery workstreams, stakeholder collaboration, and engineer mentoring across global teams. Apply cloud, database, caching, CI/CD, and big-data technologies to high-volume processing and reliable software delivery.

Build and scale Stripe Link digital wallet products and payment infrastructure. Responsibilities include designing new products, debugging production issues across the stack, mentoring engineers, collaborating cross-functionally, and improving engineering standards, tooling, and processes. The role requires strong software engineering skills, autonomy, collaboration, and comfort working as a generalist across technologies. Experience with large-scale financial tracking systems and cloud technologies is preferred.

Lead full-stack software development using React, .NET, C#, JavaScript, SQL, and cloud technologies. Design, build, test, secure, and maintain scalable applications, APIs, integrations, and data workflows. Own delivery outcomes, improve automation, performance, reliability, and observability, and contribute to technical architecture. Collaborate with product, design, operations, compliance, audit, and international banking teams while applying regulatory and security best practices.

Leads the design, development, testing, and maintenance of full-stack credit adjudication applications using Java and Spring Boot. Responsibilities include building RESTful APIs and microservices, improving application performance, resolving defects, conducting code reviews, documenting processes, and collaborating with cross-functional teams. The role establishes technical direction, mentors developers, oversees software quality, analyzes requirements, and ensures successful delivery of software projects.

Own the application end to end across React, Node.js, SQL, APIs, integrations, deployment, and production support. Design and implement scalable solutions, troubleshoot complex issues, make architecture and performance decisions, review code, mentor engineers, address technical debt and security concerns, and collaborate across Product, QA, DevOps, and Architecture throughout the SDLC.

Build enterprise workforce management software for forecasting, staffing, scheduling, adherence, intraday management, and reporting. Develop Java and Spring Boot microservices, React and TypeScript applications, REST APIs, event-driven workflows, integrations, and PostgreSQL data models. Support cloud-native deployments, CI/CD, testing, performance optimization, and production troubleshooting. Collaborate with product, operations research, QA, DevOps, and UX stakeholders while applying workforce management and complex business-rule expertise.

Develop and maintain legacy and next-generation platforms across APIs, web applications, databases, and cloud infrastructure. Build AI-first workflows with Claude Code, contribute to architecture and technical direction, review AI-generated code, resolve production issues, optimize performance, and mentor engineers. The role requires extensive C#/.NET, C++, SQL Server, React, TypeScript, and CI/CD experience, with opportunities to build agentic and AI-powered product features.

Build and own production-grade full-stack products across the TypeScript and Node.js stack. Contribute to technical and product roadmaps, leverage AI throughout development, collaborate with customers and teammates, and rapidly ship high-impact features in an early-stage startup environment.

Build and ship end-to-end features across frontend and backend using React, TypeScript, Node.js, NestJS, GraphQL, PostgreSQL, and AWS. Design scalable APIs, data models, and services; use AI coding agents; ensure automated testing and code quality; troubleshoot production systems; and collaborate with Product, Design, QA, and DevOps. Contribute to secure engineering practices and AI-assisted development workflows.

Leads full-stack application and microservices design, development, implementation, and support across Power Platform and Azure technologies. Translates business requirements into scalable system designs, integrations, interfaces, and processing logic. Develops technology roadmaps, leads complex solutions, facilitates design reviews, advises senior stakeholders, and mentors junior developers. The role requires technical leadership, technology selection, and collaboration across project and engineering teams.

Design, develop, and maintain scalable full-stack SaaS applications across web, API, cloud, and mobile platforms. Build Angular and React front ends, C#/.NET backend services, REST APIs, and SQL Server solutions. Contribute to architecture decisions, code reviews, mentoring, integrations, cloud-native Azure development, CI/CD pipelines, and production troubleshooting. Collaborate with Product, QA, Support, and DevOps teams while using AI-assisted development tools to improve delivery and quality.

Develop and support scalable Java and React applications for OTC derivatives technology. Design microservices using Spring Boot, cloud, containerization, and distributed systems practices. Lead the full software development lifecycle, including analysis, design, testing, deployment, production support, risk assessment, and security improvements. Partner with business users and technology teams, advise stakeholders, coach junior analysts, and serve as a subject matter expert while working independently in a fast-paced environment.

Develop end-to-end cloud-native applications across frontend, backend, APIs, AI, and data layers. Build React interfaces, Python and Java services, LLM and agentic AI solutions, RAG systems, data pipelines, and Azure-based infrastructure. Responsibilities include testing, deployment automation, security, observability, troubleshooting, architecture, and cross-functional collaboration.

Lead architecture and end-to-end delivery of large full-stack projects for MaintainX’s core work execution platform. Shape technical direction, design scalable workflows, mentor senior and staff engineers, improve reliability and delivery practices, and partner with product, design, and engineering leadership. Work across dense data interfaces, mobile-first experiences, offline behavior, multi-site scale, scheduling, inventory, reporting, and enterprise systems while participating in on-call rotation.

Lead the architecture and delivery of shared platform and infrastructure systems, including APIs, developer tooling, design system components, release foundations, and runtime services. Own technical direction, reliability, performance, and long-term health for a platform domain. Partner across product and engineering teams, mentor senior engineers, drive adoption, improve testing and delivery practices, and participate in on-call rotations.

Own the customer-facing user experience and workflows for mCloud. Build performant React dashboards, topology visualizations, telemetry and alert views, gateway management tools, and administrative workflows. Collaborate with Product, Design, Backend Engineering, and other teams to integrate GraphQL and REST services, improve reliability and observability, and use AI-assisted development tools to accelerate component, query, and test creation.

Develop and maintain full-stack software solutions using .NET and related web technologies. Responsibilities include feature development, unit testing, code reviews, incident support, troubleshooting, system documentation, application integration, quality assurance, and collaboration with technology and business stakeholders. The role also supports continuous improvement, automation, risk management, and mentoring while ensuring solutions meet architectural, performance, security, and regulatory standards.

Designs, develops, and maintains enterprise ETL solutions using Informatica, SQL, cloud platforms, and data warehousing practices. Builds scalable data pipelines, integrates Salesforce and other enterprise systems, monitors data quality and performance, troubleshoots issues, and supports cloud modernization. Collaborates with business and technology teams in a regulated financial services environment while contributing to technical standards, documentation, governance, and mentoring junior developers.

Lead the design and delivery of enterprise Territory and Quota Management features, including permissions, audit history, approval workflows, and reusable platform capabilities. Make product and technical decisions informed by customer needs, write and review design documentation, guide technical direction, and remain hands-on in building production systems. Collaborate across frontend and backend technologies while shaping team practices, system quality, and future product areas.

Develop and support full-stack Java applications, including analysis, design, coding, testing, implementation, security, and production support. Build scalable microservices and single-page applications using Java, Spring Boot, React or Angular, SQL, Docker, and automated testing tools. Collaborate with business users and technology teams, assess risks, optimize performance, follow CI/CD practices, and mentor junior analysts. The role requires independent judgment, technical expertise, and experience delivering applications in high-availability environments.

Senior Full-Stack Java Engineer responsible for designing, developing, testing, deploying, and supporting enterprise applications. The role requires strong Java and Spring expertise, modern frontend development with JavaScript or TypeScript and React, relational and NoSQL database experience, and CI/CD knowledge. Responsibilities include architecture alignment, security remediation, performance optimization, code reviews, Agile collaboration, technical mentoring, production support, and end-to-end delivery of complex features in a financial services environment.

Design, build, deploy, and improve secure, resilient cloud-native applications using .NET, React, Java, Kubernetes, Azure, and DevSecOps practices. Translate requirements into technical solutions, validate architecture, implement quality and security controls, and use AI-assisted engineering tools responsibly. Mentor engineers through pairing, code reviews, and technical guidance while collaborating with product, design, and agile stakeholders. Prototype new functionality, maintain observability and reliability, and support continuous learning and improvement.

Design, develop, test, deploy, and support scalable cloud-native Workforce Management and Customer Experience applications. Build Java and Spring Boot backend services, React and TypeScript frontends, REST APIs, microservices, integrations, and PostgreSQL data models. Contribute to Node.js components, Kubernetes deployments, Jenkins CI/CD pipelines, observability, security, and production troubleshooting. Collaborate with product, UX, QA, DevOps, architecture, and engineering teams while improving application performance, resilience, and maintainability.