Top Full Stack Developer Jobs in Toronto

Design, build, and maintain full-stack applications for Equity Derivatives trading using Angular, Node.js and C# services. Lead technical design, deliver scalable APIs, debug production issues, mentor developers, and collaborate with traders and stakeholders to evolve platform architecture and improve performance and stability.

The Senior Lead Software Developer will design, code, and debug applications, mentor junior developers, and tackle complex technical challenges. They will contribute to project architecture and provide expert troubleshooting support.

Design, implement, and maintain backend services and web applications on a Microsoft stack; build front-end features with React; write well-tested, secure code; collaborate with product and design; participate in code reviews and improve CI/CD/DevSecOps pipelines.

Build end-to-end features for an agentic AI media manager: design APIs, backend services, agent logic, data models, and customer-facing interfaces; use AI coding tools, test and operate production systems, work directly with customers, and iterate on agent reliability, guardrails, and human approval flows.

Lead a squad as the technical lead for a Broker Experience Ecosystem: design scalable microservice solutions, own production stability, mentor developers, drive features from PI planning to production, and contribute to engineering culture using Java/Angular stack and modern CI/CD/container tooling.

Design, build, test, deploy, and maintain scalable full‑stack web applications. Create responsive React frontends and Java/Spring Boot backend services on AWS. Develop RESTful APIs, database integrations, automated tests, CI/CD pipelines, and monitor performance. Collaborate with product, design, and architecture teams, participate in code reviews, write technical designs, mentor junior engineers, and apply secure, accessible, and performant engineering practices.

Lead design and develop full-stack application solutions with emphasis on Power Platform and Azure. Translate business requirements into system designs, build APIs and microservices, integrate with MS Graph/Teams/O365, and mentor junior developers while guiding technical strategy and stakeholder reviews.

Senior full‑stack Java developer responsible for designing, building, testing, and deploying React front ends and Spring Boot microservices on cloud platforms (OpenShift/Kubernetes and AWS). Develop RESTful/MCP APIs, integrate with S3 and Oracle, apply CI/CD, mentor junior staff, evaluate new technologies (including generative AI/LLMs), and ensure secure, maintainable enterprise solutions while managing project delivery and risk.

Participate in analysis, design, development, testing, implementation and support of application systems. Provide feasibility studies, estimates, risk assessment, security recommendations, and act as SME/coach. Monitor development lifecycle, consult with users and tech teams, and ensure compliance with policies and controls.

The role involves building full-stack applications, designing AI-powered features, and collaborating with teams to deliver innovative digital solutions using Agile methodologies.

The Senior Full-Stack Engineer for AI Platform will design and implement frontend and backend components, ensuring high-quality code, system performance, and collaboration across teams. The role emphasizes delivery, architecture, and testing discipline in a fast-paced environment.

Join a cross-functional team to develop data products, write efficient code, influence AI roadmap, and collaborate with diverse professionals.

The role involves designing and developing front-end and back-end components, mentoring team members, ensuring system efficiency, and optimizing platform performance in a collaborative team environment.

Lead rapid concept-to-production work using AI design tools and modern full-stack frameworks. Build accessible, performant frontends and robust backends, implement APIs, auth, caching, and databases, and collaborate with designers and AI builders to maintain design systems and deliver production-ready applications.

Build and own end-to-end ML features for an agent management platform in healthcare: design data models, build pipelines and backend services, integrate frontend when needed, ground and evaluate agent behavior using clinical data (FHIR/HL7), prototype with hospital partners, and create novel solutions for agent observability, evaluation, and continuous improvement.

Senior full-stack developer to design, build, and optimize cloud-native microservices using Angular, Spring Boot and AI/ML techniques. Troubleshoot, ensure security and performance, integrate systems, apply AI-driven code analysis, and mentor junior developers across the SDLC.

Hands-on senior full-stack developer building end-to-end features for a smart-building platform. Work spans Angular front-end, .NET/C# back-end, MS/Azure SQL, Elasticsearch, and hardware/third-party IoT integrations. Collaborate with Product, QA, Hardware, and Ops to design, implement, test, and support scalable production systems in an Agile squad environment.

Develop, test, and maintain full‑stack web applications. Participate in code reviews, research new technologies, collaborate with team members, and improve development workflows for performant, secure software.

Design, build, test, and deliver production-grade web applications. Write maintainable, performant code, participate in code reviews and testing, research new technologies, and communicate closely with the development team to improve workflows and deliver high-quality software.

Design, build and maintain a cloud-native, AI-first Cash & Intraday Liquidity Management platform. Deliver highly available, multi-region microservices, embed LLM tooling, ensure regulatory compliance, partner with risk/compliance, and drive engineering quality via CI/CD, testing, and Agile practices.

Design and maintain data warehouse systems, develop ETL pipelines, manage datasets for analytics, and implement real-time data solutions.

You will build and maintain features across frontend and backend stacks, design analytics dashboards, optimize APIs, and ensure database performance while collaborating with various teams.

As a Fullstack Engineer Intern, you will work on real production projects involving scalable systems, machine learning models, and product features, while collaborating with experienced engineers in a fast-paced environment.

The Full Stack Engineer will develop features for the advertising platform, collaborate on architecture, perform code reviews, and ensure quality software development.

As a Senior Software Engineer at Vanta, you will lead projects, set technical direction, develop product functionality, and mentor engineers, leveraging modern frameworks like TypeScript, React, and Node.js.