System Engineer

Contract: Mobile + AWS Engineer — Bluetooth ECG Pipeline HardeningRemote · ~2-week project · NDA required · Rate negotiable based on experienceWe build objective measurement tools for stress, cognitive workload, and readiness. The underlying signal is ECG — captured from a Bluetooth wearable, streamed through a mobile app to AWS, and visualized on a dashboard.The pipeline works. We need someone to make it work reliably. Track down the rough edges, harden the streaming, and tune the dashboard so it's genuinely useful for live troubleshooting and display.The workAudit and stabilize a cross-platform mobile app that pairs with a Bluetooth ECG deviceDebug and harden the streaming path from device → app → AWSImprove dashboard robustness — better error handling, clearer display, faster diagnosis when something breaksDocument what you find and what you changeYou should haveStrong cross-platform mobile experience (React Native, Flutter, or similar) and comfort jumping into an existing codebaseSolid Bluetooth Low Energy (BLE) experience — bonus if you've worked with biosignal or medical wearablesAWS proficiency — you don't need to know our exact stack ahead of time, but you should be able to read it, find failure points, and improve itFull-stack debugging instincts: mobile ↔ cloud ↔ dashboardLogistics~2-week project, fast startRemote, 1099 / contractNDA executed before code accessRate negotiable based on experience and what you can credibly deliver in two weeksIf you've shipped a BLE mobile app that streams to a cloud backend and you can move fast, send a short note with relevant work, availability, and your rate.