Dexcom is a leader in continuous glucose monitoring (CGM) devices, offering the Dexcom G7 system for real-time glucose monitoring without finger pricks or scanning. The Dexcom G7 sends accurate glucose numbers in real-time to a smartphone, smartwatch, or Dexcom receiver. Features include: no finger pricks (if glucose alerts and readings from G7 match symptoms or expectations, otherwise use a blood glucose meter), support to lower HbA1c and increase Time in Range, Dexcom Follow app (share numbers with up to 10 people), alerts (Urgent Low Soon Alert up to 20 minutes before going low, high glucose alerts, customizable quiet/loud/delayed), flexible wear locations (arm, abdomen; ages 2-6 can wear on upper buttocks), water resistance (submerged under eight feet of water for up to 24 hours), fastest warm-up on the market (30 minutes vs. 1 hour+ for other CGM brands), 12-hour grace period for sensor swaps, and compatibility with smartphones and a touch screen receiver (optional). Note: Dexcom G6 will be discontinued on June 30, 2026; users are encouraged to upgrade to Dexcom G7.
Dexcom develops the Dexcom G7 iOS app for diabetes management, as well as the Dexcom Follow app for caregivers and support networks. The iOS engineering team builds and maintains features for real-time glucose monitoring (live glucose readings every 5 minutes), glucose trend visualization (graphs showing current glucose, trend arrows, history up to 24 hours), alerts and alarms (urgent low soon alert up to 20 minutes before low, high glucose alerts, customizable quiet/loud/delayed alerts), follow app integration (share glucose data with up to 10 followers via Dexcom Follow app), health data integration (Apple HealthKit for sharing glucose data with other health apps), Apple Watch companion app (glucose readings and trends on wrist), smartwatch complications (glanceable glucose numbers on watch face), data logging and export (download glucose history for sharing with healthcare providers), sensor pairing (Bluetooth Low Energy connection between G7 sensor/transmitter and iPhone), warm-up timer and grace period tracking (30-minute warm-up countdown, 12-hour grace period after sensor expiration), settings management (alert thresholds, notification sounds, display units mg/dL or mmol/L, transmitter/sensor info), appointment and medication reminders (future feature potential), and accessibility features (VoiceOver for visually impaired users, larger text, high contrast, haptic alerts for low glucose).
Mobile development in this context focuses on Bluetooth Low Energy (BLE) for sensor pairing and real-time glucose data streaming (CoreBluetooth), HealthKit integration (reading and writing glucose data to Apple Health for sharing with third-party apps, doctors, and caregivers), Apple Watch integration (WatchConnectivity for syncing glucose readings and alerts to watchOS app, complications for watch face glance), real-time data visualization (Swift Charts or custom graphing for glucose trends, current reading with large numerals for easy glanceability), push notifications for critical alerts (urgent low soon alert, high glucose alerts — configured to bypass Do Not Disturb and Quiet Mode using critical alert entitlement), Core Data or similar for offline glucose history storage (store readings for up to 24 hours or longer when phone is offline), widget development (home screen widget showing current glucose and trend), background processing (Core Bluetooth background mode to receive glucose readings even when app is not active), encryption and security (health data encryption under HIPAA compliance), accessibility features (VoiceOver for glucose readings, haptic alerts for low glucose, large text, high contrast for visually impaired users), integration with backend systems for data sharing (Dexcom Clarity for long-term glucose reporting, doctor portals), and medical device regulatory compliance (FDA Class II medical device software requirements, CE marking in Europe, safety and effectiveness standards).
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These roles focus on building and maintaining the Dexcom G7 iOS app and Dexcom Follow app that help millions of people with diabetes manage their condition with real-time continuous glucose monitoring (CGM). Engineers work on Bluetooth Low Energy (CoreBluetooth) for pairing the G7 all-in-one sensor/transmitter to iPhone, streaming real-time glucose readings every 5 minutes (trend arrow, current value, history), HealthKit integration to share glucose data with Apple Health and third-party wellness apps, Apple Watch companion app with complications for glanceable glucose (modular, circular, extra large), real-time alerts that can break through Do Not Disturb (critical alerts entitlement for Urgent Low Soon Alert up to 20 minutes before low glucose occurs), customizable high glucose alerts (quiet, loud, delayed), glucose trend visualization with Swift Charts (2, 6, 12, 24 hour history graphs), offline storage for glucose history when phone is offline (Core Data, up to 24 hours or more), background processing with Core Bluetooth background mode to receive glucose readings even when the app is not active, Dexcom Follow app integration for sharing data with up to 10 followers (caregivers, family, healthcare providers), accessibility features for inclusive diabetes management (VoiceOver for glucose readings, haptic alerts for low glucose, larger text, high contrast, dynamic type), warm-up timer (30 minutes — fastest on the market) and 12-hour grace period after sensor expiration for convenient sensor swaps, widget development for home screen glucose glance, secure data encryption for HIPAA compliance, backend integration with Dexcom Clarity for long-term glucose reporting (doctors can review Time in Range, HbA1c estimates, glucose patterns), and medical device regulatory compliance (FDA Class II, CE marking, ISO 13485 quality management system) — all while helping people with diabetes achieve lower HbA1c, more Time in Range, and greater confidence in managing their glucose levels anytime, anywhere. Dexcom's G7 CGM requires no finger pricks (if readings match symptoms or expectations), no scanning, offers water resistance (submerged 8 feet for 24 hours), and supports three wear locations (arm, abdomen, or upper buttocks for ages 2-6). Dexcom G6 will be discontinued on June 30, 2026, with focus on upgrading users to G7.
