I need a browser-based application that lets me operate a set of posster pumps remotely. The single most important feature is hands-on control: start, stop, change speed or mode, and immediately see confirmation that each command was accepted by the hardware. A clean, responsive interface is essential so I can select one pump or many and issue commands with a click. You are free to pick the tech stack you prefer—React, Vue, plain JavaScript on the front end; Python, Node, C#, or similar on the back end—so long as the result is easy for me to deploy and maintain. If you have experience bridging web apps to equipment over Modbus, MQTT, or another field protocol, that will help us move quickly. I will supply the pump communication specs and a test endpoint once we get started. Deliverables • Complete source code for both front- and back-end components • A concise README with build, configuration, and deployment steps • Instructions for adding additional pumps after hand-over Let me know which language or framework you prefer and share any relevant projects you have done. I’m ready to begin as soon as you are.