Top Full Stack Developer Jobs in Toronto

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.

Build and maintain React front-end interfaces and accompanying API routes for an AI security platform. Visualize large-scale usage, cost, and forecasting data with a focus on performance and accessibility. Debug full-stack production issues, write cloud deployment and monitoring automation, participate in customer feedback and prototyping, and continuously ship, test, and improve product with peers.

Design, build, test, deploy and support client-facing features across an Angular front end and C#/.NET back end. Own APIs, data contracts, observability, and production reliability. Collaborate with product, design, QA, and data teams to deliver performant, accessible, and secure financial product experiences that drive customer adoption and business outcomes.

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.

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.

The Senior Full Stack Engineer will design and build core infrastructure for a logistics platform, focusing on backend systems, high-scale CRUD APIs, and real-time, event-driven architectures in a startup environment.

Provide Java full‑stack development and application support (including on‑call rotation) for credit systems. Troubleshoot, fix, and enhance applications; write and maintain quality code; perform unit/integration testing; collaborate with analysts and stakeholders; participate in incident management, root cause analysis, and continuous improvement while adhering to security and delivery standards.

Leads the design, development, and implementation of complex full-stack applications using Java, Spring Boot, Node.js, React, and microservices. Architects scalable solutions, integrates Oracle and MongoDB, optimizes performance, and applies test-driven development and automated testing. Collaborates with cross-functional teams, conducts code reviews, mentors developers, manages complex development tasks, and promotes engineering quality, security, DevOps, and continuous improvement.

Lead applications systems analysis and programming, oversee development processes, consult with stakeholders, and enhance application systems. Requires experience in full-stack development, particularly with React and Java.

Participate in full application lifecycle: feasibility, analysis, design, development, testing, implementation, and support. Provide estimates, risk assessment, security recommendations, consult with users, coach junior analysts, and act as SME with limited supervision.

Lead development and productionalization of a greenfield desktop automation product. Architect scalable, reliable automation workflows, ensure HIPAA-level security, support US expansion (data residency, localized auth), and experiment with AI/ML to improve automation accuracy. Mentor team members and represent the product in client and company forums.

The Senior Software Engineer will develop and maintain software solutions, write efficient code, perform testing, and collaborate with teams to enhance product performance.

Join a talented engineering team to build products at the intersection of AI and finance, focusing on the Fiscal.ai Terminal and financial data APIs.

The role involves collaboration with teams to develop solutions, maintain quality standards, and provide technical support, focusing on full-stack development using a variety of technologies.

The Full Stack Intermediate Software Developer will work on critical platform projects, focusing on product development, solution architecture, and coding best practices while collaborating with the team and ensuring application security.

Develop and support new or revised applications, from feasibility analysis and design through testing and implementation. Build scalable Java-based solutions, REST APIs, and integrated services while applying security, testing, database, messaging, and cloud technologies. Troubleshoot complex issues, support business users, manage risks and deadlines, advise stakeholders, and coach junior analysts. The role requires independent judgment and ownership of application development processes.

Develop and scale backend services and APIs for high-traffic weather applications used by millions. Responsibilities include designing features with Go and Node.js, optimizing AWS, GCP, and on-premise infrastructure, managing microservices and deployments, refactoring legacy systems, writing tests, and collaborating through code reviews. React Native, React, TypeScript, Jenkins, and Fastlane experience are valuable for mobile application delivery.

Design, develop, and deliver enterprise full-stack applications using Java, Spring Boot, and Angular. Provide technical leadership through architecture, code reviews, mentoring, and hands-on problem solving. Embed AI coding tools and establish team standards for prompt engineering and quality. Apply relational and NoSQL data design with Oracle and MongoDB. Support cloud-native engineering through Docker, OpenShift, Kubernetes, infrastructure as code, CI/CD, and modern software delivery practices.

As a Full Stack Software Engineer, you will develop and maintain software for high traffic websites, emphasizing AI integration and quality coding practices within a cross-functional agile team.

Design, develop, test, and support full-stack banking applications and REST APIs (payments-focused). Lead technical design, integrations, and operational efficiency; coach team members and work with stakeholders to implement multi-platform solutions.

Develop, test, and support cross-platform banking and payments applications. Build backend services and REST APIs, integrate vendor products and external systems, design scalable solutions, lead and coach team members, and collaborate with business partners to implement secure, observable, high-throughput payment systems.

Build and operate Threat Intelligence Services platform: administer AWS infrastructure, design APIs and integrations, develop React/Node.js front-ends and Python (FastAPI) services, manage headless CMS and databases (PostgreSQL/Elasticsearch), automate analyst workflows, ensure reliability, security, observability, and partner with analysts to deliver intelligence products.

Design, develop, and maintain scalable full-stack web applications. Collaborate with stakeholders and cross-functional teams to translate requirements into technical solutions, modernize legacy systems, implement APIs and integrations, troubleshoot production issues, participate in architecture and code reviews, and drive CI/CD and DevOps practices to deliver reliable, high-quality enterprise software.

Lead the design and development of scalable cloud-based applications using React, Next.js, and Node.js, ensuring optimal performance and security while collaborating in an Agile environment.

Lead the development of cloud-native enterprise applications using React and AWS, mentor team members, collaborate with stakeholders, and optimize solutions.