I need a developer to build the first module of an all-in-one asset care platform, starting with calibration. The people who will use it day-to-day are technicians handling the instruments and the engineers who review and approve their work, so the interface has to feel natural to both groups. Absolute must-haves for this calibration module • Measurement logging that captures raw readings in real time and stores them securely. • Equipment tracking so every asset carries its full calibration history, location and next-due date. • Automated calibration reporting that can be exported or emailed straight to stakeholders in a clean, audit-ready layout. Once the calibration piece is solid I will move on to HVAC validation, qualification and, finally, the planned preventive maintenance section, so a modular architecture is important. If you design the database and API with future expansion in mind, adding those later phases will be simple. Preferred stack is whatever lets us deliver a web-based app that is quick for technicians on tablets and robust enough for engineers at their desks—feel free to propose what you know best, just outline why it fits our needs. Deliverables for this phase 1. Working calibration module deployed to a test environment. 2. Source code with brief setup instructions. 3. Short user guide showing a typical calibration workflow for both technician and engineer roles. I’m ready to dive into specifics and share current spreadsheets and sample reports as soon as we agree on the approach.