Full Stack Developer

The developer will own features end to end, from the MongoDB model through the Express API to the React screen, inside codebases they did not write. 

• →Take ownership of development work from the MongoDB data model through the Express API to the React front end
• →Take over and become familiar with the existing codebase developed by 3rd Digital
• →Get applications running locally and understand how the different repositories, environments and services fit together
• →Document setup, architecture, processes and technical decisions as you learn the system
• →Build and fix features in Genesis, TMRW's learning creation platform
• →Develop functionality within Genesis's drag-and-drop learning editor using React and related libraries
• →Build and maintain interactive learning objects such as flip cards, hotspots, accordions, video, 3D and parallax components
• →Maintain the SCORM 1.2 export and preview functionality so published courses work correctly within clients' learning management systems
• →Contribute to SensAI, TMRW's AI-powered course-writing assistant using the OpenAI API
• →Build and maintain features in Cosmos Public, the creator-led Next.js learning marketplace
• →Develop marketplace functionality covering learning experiences, pricing, delivery methods and subscriptions
• →Build and maintain the subscription and billing functionality for separate learner and creator plans
• →Work with Stripe for subscription payments and invoices
• →Design and modify Mongoose models, database queries, indexes and REST API endpoints
• →Maintain and extend the shared Node.js / Express back end supporting Genesis, Cosmos, subscriptions and administration
• →Work with authentication and sessions, including email/password authentication, Google sign-in, magic links and two-factor authentication
• →Build and maintain administration functionality covering users, content, analytics and master data
• →Work across older React applications as well as newer React 18/19 and Next.js applications
• →Safely improve or upgrade older code and dependencies where appropriate
• →Introduce automated tests into areas where testing is currently limited or absent
• →Test your own work thoroughly before handing it over for review
• →Work through Git feature branches and pull requests using Bitbucket
• →Communicate progress, blockers, risks and technical concerns clearly and early
• →Work to agreed priorities and timelines set with the CEO
• →Document important technical decisions and processes to make the codebase easier for future developers to work with

• 3+ years of commercial experience in full stack JavaScript development
• Strong experience with Node.js and Express, including building REST APIs, authentication and session management
• Strong experience with MongoDB and Mongoose, including schema design, indexing, queries and working with existing data and migrations
• Strong experience with React and Redux, including working across older Create React App codebases and modern React 18/19 applications, as well as Next.js
• Comfortable working with existing codebases that have limited documentation and automated testing
• Strong understanding of Git, including feature branches, pull requests and submodules
• Clear written English and the ability to provide effective async updates to an Australian team

• Knowledge of e-learning technologies and standards such as SCORM, xAPI or LMS integrations
• Familiarity with drag-and-drop and rich-text editors such as GrapesJS, Craft.js, Tiptap or CKEditor
• Stripe subscriptions, billing and tiered plans
• OpenAI or other LLM API integration
• Electron or Capacitor apps
• Automated testing with Jest or React Testing Library, plus modernising older dependencies
• Interactive front-end libraries such as GSAP, Lottie or three.js
• Experience working alongside AI coding assistants 

This is a remote role that will be set up as an independent contractor engagement.

To ensure alignment and transparency, successful candidates will be expected to:

• Disclose any existing ongoing roles or client work
• Reflect this engagement on their LinkedIn profile (clearly marked as “Independent Contractor”)