React Developer (React JS +React Native) (Contract)
Project XCompany: Project X Ltd.
Location: Toronto, Ontario
Employment Type: Contract to Full time
Location: (Hybrid Model)
Salary Range: Hourly Rate: $65.00 (Negotiable)
Please note: This opportunity will be a contract opportunity with a potential for it to be full time.
About Project X Ltd
Project X Ltd. builds high-performing teams of talented, client-focused problem solvers who thrive on complex data challenges. Guided by our values of Care, Bravery, Excellence, and Innovation, we value people who take ownership of their work, step up when needed, and get things done.
Our team members are trusted advisors who collaborate closely, think creatively, and deliver practical, high-quality solutions for our clients. We look for individuals who are curious, accountable, eager to learn, and supportive of their teammates—because at Project X, our people are what make us great.
Role Summary
Project X Ltd. is looking for a React Developer who enjoys building high-quality digital experiences across both web and mobile platforms. In this role, you will design and develop modern applications using React JS and React Native while collaborating with backend services built in Node.js.
You will work closely with designers, product teams, and engineers to build intuitive user experiences and scalable solutions that support real-world business needs. This role is ideal for someone who enjoys owning features end-to-end—from design and development through testing and deployment—and who takes pride in writing clean, maintainable code.
Key Responsibilities
Develop and maintain modern web applications using React JS (v17+) including hooks, functional components, context API, and component lifecycle management
Build cross-platform mobile applications using React Native with React Native CLI and/or Expo for both iOS and Android environment
Implement application state management using tools such as Redux, Redux Toolkit, Zustand, or Recoil
Implement client-side routing using React Router including dynamic routing, protected routes, and nested route
Optimize application performance using memoization techniques (useMemo, useCallback), lazy loading, and code splitting
Develop backend services and REST APIs using Node.js and Express.js, including middleware design, error handling, and authentication flows
Integrate applications with databases such as PostgreSQL, MySQL, or MongoDB using ORMs including Sequelize, Prisma, or Mongoose
Implement authentication and authorization solutions including JWT, OAuth 2.0, and session management
Ensure API security using techniques such as rate limiting, CORS configuration, input validation, and secure environment variable management
Implement mobile navigation using React Navigation including stack, tab, and drawer navigators
Optimize mobile performance using techniques such as FlatList optimization and animation frameworks including Reanimated or the React Native Animated API
Support application builds and deployment processes for mobile apps through the Apple App Store and Google Play Store
Write and maintain automated tests using tools such as React Testing Library, Jest, and snapshot testing frameworks
Contribute to integration and end-to-end testing using tools such as Cypress or Detox
Participate in code reviews, maintain documentation, and contribute to shared engineering standards
Work closely with product managers, designers, and QA teams throughout Agile sprint cycles including planning, standups, and retrospectives
What We’re Looking For – Required Qualifications
3–4 years of professional experience building web applications using React JS
Hands-on experience developing mobile applications using React Native for iOS and Android
Strong proficiency in JavaScript (ES6+) and TypeScript including strong typing and interface design
Experience building and consuming REST APIs using Node.js and Express.js
Experience integrating relational or NoSQL databases such as PostgreSQL, MySQL, or MongoDB
Experience working with modern frontend build tooling including Webpack, Vite, Babel, ESLint, and Prettier
Experience using Git in collaborative development environments including branching strategies, pull requests, and code reviews
Experience working in Agile development environments and delivering features within sprint cycles
Nice to Have
Experience working with GraphQL and Apollo
Experience building real-time features using WebSockets or Socket.io
Familiarity with modern frontend tooling such as Vite, Webpack, or Babel
Experience deploying applications to cloud platforms such as AWS, GCP, or Azure
Experience working in monorepo environments
Familiarity with accessibility best practices (WCAG)
Use of Artificial Intelligence in Recruitment
Project X may use automated or AI-enabled tools as part of the recruitment and selection process. These tools may support activities such as resume screening, candidate matching, or application management. All hiring decisions involve human review and judgment.
Employment Equity, Accessibility & Accommodations
Project X is committed to fostering an inclusive, accessible workplace. Accommodations are available upon request in accordance with the Accessibility for Ontarians with Disabilities Act (AODA) and the Ontario Human Rights Code.
Privacy Notice
Personal information collected during the recruitment process will be used solely for recruitment purposes and handled in accordance with applicable privacy legislation.
How to Apply
Please apply with your resume and cover letter.