Top Full Stack Developer Jobs in Toronto

Leads the functional design, development, testing, integration, and implementation of cross-platform applications. Develops full-stack solutions using Java, Spring Boot, RESTful APIs, Angular, React, and JavaScript. Performs technical impact analysis, debugging, requirements gathering, and design specification preparation while collaborating with business analysts, end users, and technical teams. The role also supports cloud, microservices, CI/CD, database, and emerging generative AI initiatives.

Design, develop, test, deploy, and support scalable cloud-native applications using Java, Spring Boot, React, TypeScript, Node.js, PostgreSQL, and microservices. Build REST APIs, integrations, event-driven solutions, CI/CD pipelines, and containerized deployments. Troubleshoot production issues and improve performance, resilience, observability, and maintainability while collaborating with product, UX, QA, DevOps, architecture, and engineering teams.

Develop and maintain full-stack business applications across the software development lifecycle. Build React front ends, Node.js services, APIs, databases, automated tests, and accessible user interfaces. Apply DevOps, CI/CD, design patterns, and secure coding practices while collaborating with clients and engineering peers. Investigate technical risks, resolve defects, document solutions, participate in code reviews, and contribute to innovative digital product prototypes.

Develop 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, database models, integrations, and CI/CD pipelines. Containerize and deploy applications, implement observability and secure API patterns, troubleshoot production issues, and collaborate across product, UX, QA, DevOps, and architecture teams.

Build and maintain shared platform services, developer tools, APIs, design system components, and release infrastructure. Ship features end to end, collaborate with product and design, improve reliability and delivery practices, support internal engineering customers, review code, mentor developers, and participate in on-call rotation. The role requires full-stack web or mobile development using TypeScript, React, Node.js, and related technologies.

Build and maintain full-stack workflows for scheduling, inventory, reporting, work execution, and technician experiences. Ship features from planning through production, collaborate with product and design, own system reliability and performance, review code, mentor developers, and improve testing and delivery practices. The role involves mobile-first development, large datasets, offline behavior, multi-site scale, and on-call rotation.

Design, develop, integrate, and maintain enterprise-scale full-stack applications supporting financial crimes, enterprise risk, regulatory compliance, and reporting. Lead technical architecture, development strategy, technology roadmaps, complex projects, code reviews, and development team activities. Mentor developers, coordinate application programming, deliver scalable solutions, and adopt AI and emerging technologies to improve development efficiency and team effectiveness.

Build and maintain frontend and backend components for a rapidly scaling legal-tech platform. Develop APIs and backend systems in Go, implement React/TypeScript user interfaces, optimize performance and security, write tests and CI/CD pipelines, perform code reviews, mentor junior developers, and collaborate with Product and Design in an agile environment.

Develop and maintain Java Spring Boot microservices, REST APIs, Angular applications, and Kafka-based event-driven systems for lending workflows. Deploy and operate containerized applications on AWS ECS, manage GitHub-based CI/CD, configure batch scheduling, support relational and NoSQL databases, and enforce application security. Participate across the software development lifecycle, provide production support, establish engineering standards, and collaborate with technical and business stakeholders in an Agile environment.

Develop and maintain life insurance calculation capabilities and full-stack applications using C#, .NET, F#, React, APIs, microservices, and Azure Kubernetes Service. Responsibilities include designing secure solutions, automated testing, CI/CD, production troubleshooting, code reviews, technical documentation, and collaboration with cross-functional Agile teams. The role also involves refactoring applications, supporting distributed architectures, and translating complex insurance business logic into reliable software.

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.

Develop, test, and troubleshoot distributed full-stack software systems using Java and related enterprise technologies. The role involves designing networked applications, working with Windows and Linux servers, connecting applications to MySQL through JDBC, and addressing software problems creatively. Candidates should have strong computer science or engineering academic performance, excellent communication skills, and experience with Java, C++, databases, network protocols, cloud servers, and application development technologies.

Leads development of production web applications and server-side services from architecture through deployment. Uses AI coding agents and LLM APIs, establishes automated verification and human review workflows, and owns code quality, security, accessibility, performance, analytics, and CMS integrations. Provides technical estimation, documentation, risk management, code reviews, stakeholder communication, and developer mentoring.

Develop and operate authentication, authorization, and identity-provider services for APIs, customer products, and internal tools. Build Go backend services, gRPC/REST APIs, shared libraries, and React/TypeScript interfaces, with occasional Java work. Own services end to end, including data modeling, deployments, monitoring, troubleshooting, integrations, testing, incident response, and on-call support.

Build and operate a new full-stack fleet payments and expense management platform. Responsibilities include architecture, backend services, APIs, web and mobile capabilities, payment workflows, partner integrations, testing, observability, security, production readiness, and continuous improvement. The role collaborates with product, design, security, and distributed engineering teams while mentoring engineers and establishing scalable development practices.

Develop and maintain full stack applications for Citi’s Oracle Ledger Program using Java, Angular or React, REST APIs, and Selenium. Lead software delivery from analysis through implementation, provide advanced L3 production support, resolve complex issues, collaborate with business and technology teams, uphold engineering standards, and mentor developers within a global delivery model.

Build and scale full-stack web products for patients, pharmacies, and healthcare customers. Own features from design through release, develop APIs, user interfaces, and web services, improve performance and usability, solve complex technical problems, promote testing and development best practices, and mentor junior engineers and interns. Collaborate with engineering, product, and design teams to deliver reliable, high-quality software.

Develop and maintain full-stack features for the ERAS Platform, including backend APIs, frontend applications, automated tests, deployment configurations, and integrations with USDA systems. Ensure secure, accessible, well-documented code meeting WCAG, Section 508, OWASP, and testing standards. Participate in code reviews, agile sprints, Salesforce development, technical documentation, and federal modernization initiatives. The role is remote and requires the ability to obtain a Public Trust.

Build and maintain production web applications supporting data labeling, data capture, and global operations. Develop React and TypeScript frontends, Node.js or Python backend services, APIs, workflows, permissions, and data integrations. Own features end to end from design through deployment, monitor production systems, troubleshoot issues, and integrate AI capabilities into internal tools. Collaborate with operators, data teams, stakeholders, and senior engineers to deliver maintainable, reliable software.

Develop and enhance Grafana data source plugins integrating third-party services and databases. Support plugin reliability and operations in Grafana Cloud, integrate data sources with agentic workflows, improve engineering processes, assist with customer escalations, and collaborate across the Grafana Division. The role requires strong Golang and TypeScript skills, Kubernetes and microservices experience, robust software development practices, and participation in on-call and SRE operations.

Build responsive web applications and scalable frontend/backend services, design secure APIs and databases, implement AI-powered search and asset management features, collaborate on system architecture, and optimize performance and UX for a cloud-native DAM platform.

Build and maintain full-stack features for secure, high-volume fintech and cryptocurrency transactions. Develop Golang and Java backend services, Node.js and TypeScript APIs, and React/Next.js applications. Integrate third-party systems, implement OAuth 2.0 authentication, work with microservices, and ensure security, performance, reliability, and observability. Contribute to architecture discussions, code reviews, technical documentation, and end-to-end feature ownership in a fully remote environment.

Build and scale fullstack Growth Platform systems, including self-service marketing tools, experimentation infrastructure, and customer and event-data integrations. Develop frontend and backend features, design and consume APIs, ensure scalability and maintainability, and collaborate with marketers, analysts, lifecycle teams, product managers, and engineers. Contribute to technical design, code reviews, testing, and process improvements while supporting attribution, data activation, and customer engagement.

Own Myant’s public websites, including hosting, SEO, analytics, accessibility, privacy, and performance. Develop responsive React and Next.js applications for clinician and patient connected-health platforms. Integrate backend APIs, improve scalability and Core Web Vitals, maintain testing and documentation, make web-stack decisions, mentor developers, and work within regulated medical-device software processes. Collaborate with designers, product managers, marketing, and backend teams while applying AI-assisted development tools responsibly.

Build and operate customer-facing SaaS applications using Java, Spring, React, and TypeScript. Own complex features from design through production support, develop APIs and distributed systems, improve frontend experiences, apply AI-assisted coding tools, modernize legacy software, strengthen CI/CD and observability, and mentor engineers through technical leadership and code reviews.