Top Full Stack Developer Jobs in Toronto

Lead full-stack development of growth, sales, and product tooling, experimentation infrastructure, and AI- and LLM-powered workflows. Partner with cross-functional teams to translate business needs into scalable technical solutions, drive greenfield projects, shape roadmaps, and improve system architecture. The role includes technical leadership, design reviews, mentorship, and collaboration in a hybrid office environment.

Leads hands-on development of complex full-stack Java applications, microservices, reporting pipelines, and enterprise integrations. Architects scalable systems using Spring, Oracle, MongoDB, Kafka, and modern frontend frameworks. Leads globally distributed Agile teams, oversees sprint delivery, code quality, CI/CD, performance engineering, production support, incident resolution, and secure SDLC compliance. Mentors engineers and partners with product, business, database, and infrastructure stakeholders.

Contribute to design, development, testing, and implementation of enterprise applications. Build and integrate web applications (Java, Angular/React), implement REST/Kafka integrations, optimize performance and reliability, apply security best practices, support users, coach junior analysts, and assist cloud migration efforts.

Contribute to design, development, testing and maintenance of web applications using AngularJS, Spring Boot and SQL. Collaborate with product, design and engineering teams, conduct code reviews, troubleshoot and debug, identify security vulnerabilities, mentor junior analysts, and drive process improvements to deliver scalable, maintainable backend and full-stack solutions.

Develop and maintain full-stack applications, backend services, APIs, integrations, and internal tools while managing AWS cloud infrastructure, CI/CD, containers, databases, observability, and automation. The role requires production troubleshooting, security and reliability improvements, developer workflow enhancements, and collaboration across Product, QA, DevOps, Customer Support, and Development teams. The developer will use Python, JavaScript/TypeScript, Go, React, AWS, Docker, Kubernetes, infrastructure as code, and modern monitoring tools to deliver scalable cloud-platform solutions.

Develop and support full-stack Java and Angular applications, including requirements analysis, design, development, testing, implementation, security, and operational support. Collaborate with business users and technology teams, assess risks, recommend programming solutions, manage development processes, and provide technical guidance to junior analysts. The role requires independent judgment, stakeholder advising, and experience with Java, Angular, Python, SQL, CI/CD, and DevOps.

Design, develop, and support cloud-native trading, analytics, and risk-management applications on Azure. Integrate market data and AI/ML capabilities, maintain CI/CD pipelines, collaborate with product and business stakeholders, and drive Agile engineering best practices to deliver scalable derivatives technology.

Develop and lead end-to-end solutions for a scalable risk computation platform supporting funding, liquidity, and capital markets analytics. Responsibilities include system architecture, Java and Spring microservice development, Big Data integration, REST APIs, database design, CI/CD, testing, monitoring, and technical leadership. The role collaborates with trading, treasury, risk management, and global technology stakeholders while improving platform scalability, stability, and team efficiency.

Build and own customer-facing product features end to end, from customer discovery and prototyping through production deployment and validation. Develop across Rails APIs, React and TypeScript frontends, AI agents, realtime voice, video, search, and analytics. Work autonomously with founders and product teammates, use AI coding tools daily, maintain production systems, make UX decisions, and take accountability for product outcomes.

Lead design and development of full-stack capital markets applications using Angular, Node.js, and C#. Build backend APIs, enhance trading and risk systems, improve platform performance and stability, and develop automated tests. Collaborate with traders and stakeholders, troubleshoot production issues, guide technical decisions, coordinate projects, mentor developers, and promote scalable, secure engineering practices across Equity Derivatives Technology.

Owns end-to-end product features for a healthcare platform, including Python APIs, React front ends, database design, EHR integrations, AI-driven workflows, and GCP cloud deployment. Ensures security, privacy, testing, and scalability while contributing to architecture, troubleshooting customer implementations, code reviews, and mentoring engineers. The role requires strong full-stack engineering expertise, healthcare integration knowledge, cloud-native development experience, and Spanish proficiency.

Develop and maintain full-stack applications by translating business requirements into tested software. Design scalable web architectures, REST APIs, user interfaces, databases, and backend services using Angular, React, Java, Spring Boot, and Azure. Support troubleshooting, migrations, CI/CD, DevOps, infrastructure, Agile delivery, technical solutioning, and stakeholder engagement. The role also involves performance optimization, security compliance, mentoring junior developers, project estimation, and knowledge sharing.

Leads the design, development, maintenance, and technical direction of a scalable insurance SaaS platform. Works across .NET back-end and Vue/React front-end technologies, optimizes performance, enforces coding and security standards, leads code reviews, resolves bugs, and mentors developers. Collaborates with product, design, and engineering teams on architecture, requirements, testing, cloud infrastructure, microservices, and continuous platform improvement.

Build enterprise Workforce Management software for forecasting, staffing, scheduling, adherence, intraday management, and operational reporting. Develop Java and Spring Boot microservices, React and TypeScript applications, REST APIs, event-driven workflows, and PostgreSQL data models. Integrate WFM with CX, ACD, HR, payroll, identity, and enterprise data platforms. Contribute to cloud-native deployments, CI/CD, testing, performance optimization, architecture, code reviews, and client-facing collaboration.

Contribute to application systems analysis and development across design, construction, testing, implementation, and support. Perform feasibility studies, estimates, risk assessment, recommend security measures, consult with stakeholders, coach junior staff, and ensure compliance with policies and standards.

Design, develop, test, deploy, and support scalable cloud-native applications using Java, Spring Boot, React, TypeScript, Node.js, PostgreSQL, microservices, and REST APIs. Build CI/CD pipelines, containerized deployments, integrations, observability, and secure distributed systems. Collaborate with product, UX, QA, DevOps, architecture, and engineering teams while troubleshooting production issues and improving application performance, resilience, and maintainability.

Leads an applications development team responsible for designing, implementing, and supporting software systems. Manages personnel, technical escalations, issue resolution, project execution, risk, budgets, compliance, and resource planning. Provides technical oversight across applications and advises developers and analysts. Requires strong Java/Spring Boot or Angular/React/Node.js expertise, software engineering knowledge, database experience, CI/CD and Agile practices, and familiarity with messaging, observability, cloud, and containerization technologies.

Leads application systems analysis, programming, architecture, and delivery for complex enterprise applications. Designs and scales microservices, distributed systems, and modern full-stack interfaces using Java, React, TypeScript, and related technologies. Establishes coding, testing, deployment, and implementation standards; resolves high-impact technical problems; partners with stakeholders; assesses risk and compliance; and coaches developers and analysts. Requires leadership, project management, stakeholder management, and experience in regulated financial services environments.

Build and evolve Okta’s Privileged Access Management platform through scalable architecture, backend APIs, and React-based user interfaces. The role involves developing Go backend services, PostgreSQL data models, cloud-based systems, and reliable distributed components. Engineers own features end to end, focusing on scalability, availability, performance, security, maintainability, and customer experience while collaborating on a fully distributed team.

Design, build, and maintain scalable web applications using Angular, TypeScript, and Java. Own features from technical design through production, contribute to architecture decisions, review code, mentor developers, write unit tests, and collaborate with design, QA, engineering, and product stakeholders. Apply AI-assisted development tools to improve productivity and code quality.

Develop and maintain a modern operational reporting portal using Java, Angular, REST APIs, SQL, relational databases, and Microsoft Azure. Responsibilities include building accessible front-end components, backend services, API integrations, database logic migration, automated testing, CI/CD deployment, documentation, and knowledge transfer. The role requires modernizing legacy reporting functionality into scalable enterprise applications while supporting performance, security, maintainability, and Agile delivery practices.

Build and maintain scalable backend services, APIs, and web applications for eBay Seller Hub. Lead projects from technical design through implementation, testing, rollout, and iteration. Collaborate with product managers, designers, and engineers to deliver customer-facing seller experiences, contribute to system architecture, write well-tested code, and improve engineering standards across orders, listings, acquisition, and other seller workflows.

Build scalable, low-latency backend APIs, event-driven services, integration layers, and microservices supporting personalization and recommendation experiences. Partner with AI/ML and data engineers to deploy models, expose AI services, and develop React applications. Improve security, observability, reliability, performance, scalability, and operational efficiency while using AI-assisted engineering tools to enhance delivery and code quality.

Build and operate scalable, low-latency backend services, APIs, event-driven systems, integrations, and frontend applications supporting membership, loyalty, rewards, and consumer engagement. Configure and integrate Antavo with commerce, CRM, CDP, marketing, and data platforms. Apply secure, observable, resilient engineering practices, troubleshoot production issues, and optimize performance. The role requires strong Java and Spring Boot expertise, plus working knowledge of React, Node.js, Kafka, and SQL/NoSQL databases.

Develop and maintain full-stack integrations for Grafana Cloud observability: build TypeScript/React frontends, Go backends, and Jsonnet mixins. Ship end-to-end features, own projects from design to production, contribute upstream to Prometheus/OpenTelemetry, participate in on-call rotation, and represent the team's work across the org.