Senior Full Stack developer (React / TypeScript, AWS)

We need an experienced developer to take over a custom-built CRM running on AWS. The previous developer is moving on and there’s very little documentation, so the first job is to get to know the system and write down how it works. After that, the role moves to ongoing support and fixes. This would suit someone who likes picking apart unfamiliar code and can explain what they find in plain terms. The client knows what the system does but not how it’s built. The contract is hourly and expected to run for 2–3 months. What you’ll do Review the codebase, AWS setup and deployment, and flag risks such as build problems and security issues Gather knowledge from the remaining stakeholders and write clear documentation covering architecture, infrastructure and the data model Fix bugs and make changes across the back end and the React/TypeScript front end Look after the PostgreSQL database, the Docker environments and the open-source CRM components the system uses Report progress and recommendations to both technical and non-technical contacts What you’ll need A track record of taking over and maintaining existing web applications, ideally CRMs Strong React and TypeScript skills Hands-on experience with PostgreSQL, Docker and AWS The confidence to work on your own when documentation is thin Good technical writing skills