Job Title: Senior UI Developer - React.js Node.js Express Location: Melbourne Job Type: Contract About the Role: We are looking for a skilled Senior UI Developer with expertise in React.js, Node.js, and Express to design, develop, and maintain high-quality web applications. The ideal candidate will have strong experience in front-end and back-end development, database management, and API integrations, ensuring seamless functionality and performance across platforms. Key Responsibilities: Develop and maintain user-friendly web applications using React.js for the front end. Build and manage robust RESTful APIs with Node.js & Express (Node-RED experience is a plus) to facilitate front-end and back-end interactions. Design and optimize PostgreSQL databases to support application functionality and ensure high performance. Implement server-side logic and integrate with third-party services using Node.js. Collaborate with UX/UI designers to create responsive, visually appealing interfaces. Write clean, maintainable, and well-documented code following industry best practices. Troubleshoot and debug applications to ensure optimal performance across different devices and platforms. Participate in code reviews, providing constructive feedback to team members and ensuring code quality. Required Skills & Qualifications: 5 years of experience in front-end development with React.js. Strong proficiency in JavaScript, ES6, HTML5, CSS3, and TypeScript. Expertise in Node.js and Express.js for back-end development. Experience with PostgreSQL or other relational databases. Familiarity with RESTful API development and third-party API integration. Strong understanding of responsive web design principles and UI/UX best practices. Experience with state management libraries (e.g., Redux, Context API) is a plus. Familiarity with Node-RED is an advantage. Knowledge of Docker, Kubernetes, and CI/CD pipelines is a plus. Excellent problem-solving skills and ability to work in a collaborative environment. Preferred Qualifications: Experience with GraphQL or WebSockets. Familiarity with cloud platforms such as AWS, GCP, or Azure. Knowledge of unit testing frameworks (Jest, Mocha, or Cypress) for front-end and back-end testing. When you apply, you voluntarily consent to the disclosure, collection and use of your personal data for employment/recruitment and related purposes in accordance with the Tech Aalto Privacy Policy, a copy of which is published at Tech Aalto’s website ( https://www.techaalto.com/privacy/) Confidentiality is assured, and only shortlisted candidates will be notified for interviews.