Top React Developer Jobs in Toronto

Design and build scalable mobile applications using React and React Native. Collaborate with teams to deliver high-performance applications.

Design and develop scalable applications in an Agile team, collaborating closely on features while learning and applying new technologies.

Develop and maintain a SaaS platform: design, build, deploy features; participate in architecture and technical decisions; ensure quality, performance and stability; perform code reviews; contribute to CI/CD and use AI tools to improve productivity and innovation.

Senior full‑stack developer responsible for designing, developing, and maintaining enterprise‑scale React.js frontends and Java (17+) Spring Boot microservices. Modernize Angular apps to React, build REST APIs and event‑driven pipelines with Kafka, integrate SQL and NoSQL databases, support CI/CD and containerized deployments (Docker, Kubernetes, OpenShift), and monitor production systems using ELK/Grafana.

Design, build, and maintain scalable full‑stack applications using React, TypeScript, and NestJS. Translate business requirements into architecture and design, contribute to system and API design, support CI/CD and DevOps practices, integrate AI coding tools (Claude Code) and agentic workflows, establish prompt engineering standards, and define guardrails for AI‑generated code. Work on large‑scale, production‑grade distributed systems.

Develop and maintain cross-platform mobile applications using React Native, collaborating with designers and product managers to improve user experience and performance.

Lead frontend development for native iOS and Android apps using React Native. Turn Figma designs into high-performance screens, ship end-to-end releases to App Store and Google Play, optimize performance and startup time, design architecture and state management, own code quality and reviews, implement rich animations and gestures, integrate APIs and AI features, and maintain analytics, logging, and monitoring.

As a Mobile Engineer, you'll build and modernize cross-platform mobile applications, guide fellow engineers, and enhance user experience while collaborating with product and design teams.

Build and maintain responsive, accessible React frontends from Figma designs; create reusable components and Storybook docs; implement client and server state management; integrate wallet and blockchain interactions; write unit, integration, and E2E tests; monitor and debug production with Sentry; participate in architecture, estimation, code review, and CI/CD workflows.