Top React Developer Jobs in Toronto

Seeking a skilled full-time Software Engineer to develop the Tailscale product, focusing on user identity and secure access. Responsibilities include designing and building core backend software components, improving system efficiency and stability, and developing features for various sign-on options. Requires familiarity with distributed systems, SQL databases, authentication protocols, and networking. Remote work with fair compensation practices based on San Francisco market data.

Perplexity is seeking a Backend Software Engineer to lead design, implementation, and scaling of systems powering web and mobile products. Responsibilities include maintaining databases, building interfaces, and scaling web server backends. Must have strong experience in Python, databases, infrastructure, and 4+ years of engineering experience. Competitive salary range of $180,000 - $230,000 with additional equity and benefits included in the compensation package.

The Senior Full Stack Developer is a technical leadership role responsible for technical direction, solution quality, and operational delivery for projects. They mentor and guide the development team, ensure best practices are followed, and lead high-stakes production deployments. Required experience includes leading complex technical projects, architecting solutions, and proficiency in C#, Python, PHP, server-side Javascript, and SQL.

The Senior Software Engineer will collaborate with cross-functional teams to design, develop, test, and deploy services and systems. They will have at least 6 years of industry experience in building highly available systems and expertise in service-oriented architecture, relational and NoSQL databases, and frontend development with React Native and ReactJS.

The Senior Fullstack Developer at RBC's Advanced Observability team will design and implement real-time dashboards, enhance APIs, optimize back-end services, implement distributed tracing solutions, and develop automated alerting systems for system observability. The role involves collaborating with teams, monitoring and improving tool performance, ensuring data security and compliance, and working in an Agile environment. Must have front-end and back-end development skills, experience with DevOps and deployment practices, and familiarity with mobile development and GraphQL.

Seeking a Senior Backend Engineer to join a mission-driven payments company focused on enabling merchants to accept government benefits through a unified API. Responsibilities include building great products, engineering systems, articulating thoughts, balancing implementation tradeoffs, and writing high-quality code. Must have experience in building PayFac or Payment Processor systems and work effectively in a remote setting. Tech stack includes Python, Django, PostgreSQL, NodeJS, and AWS.

Join the Frontend Platform team at Mimecast to innovate and collaborate on shaping the future of UI. Responsibilities include working with Product Management and UX designers, building UI components, and creating world-class user experiences. Required skills include knowledge of web frameworks, experience with UI components and component libraries, translating requirements to production-ready code, and using modern tools like Jest and Webpack.

Element Fleet Management is seeking a Senior Full Stack Developer with a backend bias to design, develop, and maintain web applications using Java/C#, Spring Boot, React, and other modern technologies. Responsibilities include creating and managing microservices, writing tests via TDD, optimizing performance and security, and collaborating in an agile environment.

As a Senior Software Engineer at GlossGenius, you will own projects end to end, collaborate with cross-functional stakeholders, produce high-quality code, architect tools and systems, and uphold best practices. We are looking for someone with at least 5 years of experience, a track record of leading and owning product development, and proficiency in React Native and web technologies.

Seeking a Senior Software Engineer with over 6 years of experience in building mobile and desktop user experiences. The role involves working with a team to deliver associate-centric people experiences using React, ReactNative, Java, and GraphQL technologies.

Looking for an experienced back-end developer to contribute to the 2.0 version of Jibble, built on .NET Core. Responsible for building key integrations to Jibble 2.0 API, participating in the design process, and working with a cutting-edge tech stack. Fully remote work environment.

As a Software Engineer III - Front End at Data Ventures, you will be responsible for translating requirements into technical solutions to create the best user experience for customers. You will collaborate with project teams, conduct troubleshooting, provide user support, and participate in project discovery phases.

As a Backend Staff Engineer at Yassir, you will drive technical standards in the Last Mile Delivery domain, provide leadership in tech roadmaps and architecture decisions, mentor junior developers, and contribute to the scaling up of Backend engineers. Responsibilities include designing, building, and maintaining features, conducting design and code reviews, and improving engineering standards and processes.

Backend Engineer role in the Platform team at Labelbox, focusing on developing core services around identity and access management (IAM). Responsibilities include designing, developing, and deploying critical backend systems, ensuring scalability and performance, collaborating with customers, leading projects, strategic planning, and innovating in AI.

Join Coinbase as a Senior Software Engineer in the Backend Platform team. Work on infrastructure problems at Coinbase scale, focusing on millisecond-level performance and asynchronous processing capabilities. Collaborate with various teams to build reliable, scalable, and fault-tolerant systems.

Seeking a Principal Backend Engineer with a strong distributed systems background to lead Observability backend initiatives within the Observability team at Grafana Cloud, a composable observability platform integrating metrics, logs, and traces. Responsibilities include driving technical and business strategy, influencing product roadmap, system design, feature delivery, system operations, on-call participation, mentoring, and gaining expertise in observability products and systems.

Senior Software Engineer (Backend) role at Ouster focusing on developing and maintaining clean, high-performance code for Blue City products using Python, Postgres, and cloud platforms. Responsibilities include designing and implementing features, assuring software quality, and collaborating on cloud infrastructure.