Overview
System Engineer Jobs in Bethesda, MD at Signal Detection Group
Title: System Engineer
Company: Signal Detection Group
Location: Bethesda, MD
Contract: Mobile + AWS Engineer — Bluetooth ECG Pipeline Hardening
Remote · ~2-week project · NDA required · Rate negotiable based on experience
We 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 work
- Audit and stabilize a cross-platform mobile app that pairs with a Bluetooth ECG device
- Debug and harden the streaming path from device → app → AWS
- Improve dashboard robustness — better error handling, clearer display, faster diagnosis when something breaks
- Document what you find and what you change
You should have
- Strong cross-platform mobile experience (React Native, Flutter, or similar) and comfort jumping into an existing codebase
- Solid Bluetooth Low Energy (BLE) experience — bonus if you've worked with biosignal or medical wearables
- AWS 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 it
- Full-stack debugging instincts: mobile ↔ cloud ↔ dashboard
Logistics
- ~2-week project, fast start
- Remote, 1099 / contract
- NDA executed before code access
- Rate negotiable based on experience and what you can credibly deliver in two weeks
If 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.