Top Full Stack Developer Jobs in Toronto

Design and develop Large Language Model-based applications within Pharma R&D, focusing on client collaboration and technical excellence while ensuring production readiness and performance optimization.

The Junior Full Stack Developer will assist in delivering vulnerability remediation initiatives for financial institutions, working with various teams on development, testing, and production support activities.

Develop secure technology solutions for financial institutions, focusing on vulnerability management. Responsibilities include full-stack engineering, collaboration, and Agile methodologies.

Design and develop Power Apps solutions integrated with SQL, enhance Power BI dashboards, collaborate with stakeholders, and optimize applications for operational efficiency.

Lead full-stack design and development for Capital One's travel platform, owning architecture, implementing front-end and back-end features, improving engineering tools and practices, mentoring junior engineers, and integrating with partners like Brex while leveraging cloud services and databases.

The Staff Software Engineer will own user-facing product areas, lead initiatives across frontend and backend, and mentor team members to enhance product quality and engineering standards.

Design, build, and deliver production-grade agentic AI applications and cloud-native systems. Own agent design, orchestration, multi-provider integrations, RAG, observability, and scalable microservices. Use AI coding assistants across the SDLC, run workshops and POCs, and partner with client stakeholders to move solutions into production.

The Full-Stack Developer will design, develop, and maintain scalable applications, mentor developers, and implement solutions using C#, .NET, TypeScript, and Angular.

The Full Stack Engineer will design and implement backend services, build full-stack features, collaborate with AI engineers, and contribute to engineering best practices in a fast-paced startup environment.

Lead design and delivery of enterprise-grade AI-native, agentic solutions end-to-end. Architect, build, and scale cloud-native systems (Kubernetes, microservices, serverless), implement multi-provider AI integrations, define evaluation metrics (accuracy, latency, safety, cost), and drive client workshops, POCs, and adoption of AI-native development practices while remaining hands-on throughout delivery.

Lead full-stack design and development for Capital One's travel portal across front-end and back-end. Own architecture, apply HLD methodology, establish engineering best practices, mentor junior engineers, and improve developer experience while working through the SDLC on fault-tolerant, multi-platform systems.

Lead design and delivery of scalable, secure solution architectures for Capital One's travel portal. Create ADRs and HLDs, participate in governance, maintain capability catalogs, evaluate new technologies, collaborate with stakeholders, mentor teams, and ensure solutions meet architectural and security standards in a regulated environment.

As a Full Stack Engineer, you'll build next-gen products, debug critical issues, mentor peers, and collaborate with cross-functional teams.

Lead design and hands-on delivery of full-stack prototypes and production solutions. Build front-end, back-end, cloud and data components; enforce secure, maintainable architectures; run code reviews, CI/CD, testing and monitoring; translate technical choices to stakeholders and support agile delivery with cross-functional teams.

Seeking a Senior Full-Stack Engineer with leadership experience, strong web development skills, and effective communication. Responsibilities include managing projects, leading teams, and collaborating with clients to define technical solutions.

Design, build, and maintain end-to-end full‑stack features across Python/FastAPI backend, Next.js frontend, and LLM inference pipelines. Collaborate cross‑functionally to deliver scalable AI-powered patent analysis, optimize performance, address production issues, and reduce technical debt while improving engineering practices.

Lead the development team in designing and building scalable applications, facilitating architecture discussions, and collaborating closely with clients and team members.

Design, build, and deploy scalable full-stack seller experiences using React, Node.js, and TypeScript. Own APIs, microservices, data models, CI/CD, observability, and production support. Collaborate with product and engineering teams, optimize performance and developer productivity, create reusable components, and mentor engineers to raise technical standards.

Design, build, and deploy scalable full-stack applications and APIs using React, Node.js, and TypeScript. Collaborate with cross-functional partners to deliver seller experiences, create reusable components and shared libraries, and improve developer productivity. Ensure software quality, observability, and operational excellence through testing, CI/CD, and production support. Mentor engineers and drive technical decisions to raise engineering standards across the team.

Design, build, and maintain backend services and REST APIs with NestJS/TypeScript and MySQL; implement React/Tailwind UI components; integrate frontend and backend; support Kafka messaging; collaborate with product/design using Figma; use AI coding tools to accelerate development and work in an agile cross-functional team.

Lead applications systems analysis and programming activities, partner with management for functional integration, and mentor developers. Resolve complex issues and ensure compliance with regulations.

The Full Stack Developer will collaborate with Product Managers and Designers, work on web and mobile applications using TypeScript and Node.js, and mentor other engineers while owning product features.

As a Senior Full Stack Engineer, you'll design and deliver features for ZoomInfo's platform, lead technical decisions, and collaborate across teams. You'll also handle customer-facing features and maintain high code quality.

Design, develop, test and maintain enterprise Java applications and integrations for a digital permitting platform. Implement microservices, REST/SOAP services, Azure-enabled CI/CD deployments, IBM ODM/BAW integrations, WebSphere/Liberty hosting, PL/SQL data work, AODA-compliant UIs, OpenShift container deployments, and support multi-environment releases in Agile teams.

Build, maintain, and optimize a high-availability full-stack web application using Node.js/TypeScript backend and Vue.js frontend. Implement features across data portals, admin tooling, and analytics; design databases and ETL workflows with Python/Airflow; integrate third-party APIs; ensure performance, security, testing, and CI/CD; troubleshoot production issues and collaborate across product, design, and engineering.