MCU systems
Embedded C/C++, RTOS patterns, interrupts, DMA, bootloaders and power-aware firmware.
Hardware / firmware / connected systems
Alex Mercer / 2026
BOOT.SEQUENCE // EMBEDDED SYSTEMS ENGINEER
Small boards.
Big signals.
I design embedded and IoT systems where hardware, firmware, sensing and cloud telemetry behave like one instrument: reliable at the edge, observable in the real world.
01 / System profile
Engineering for the
edge of reality.
From low-power sensor nodes to production-ready connected devices, my work sits at the boundary between electronics and software. I care about deterministic behavior, clean interfaces, resilient connectivity and the tiny details that keep devices dependable after deployment.
42device prototypes
18IoT deployments
99.2telemetry uptime %
7years building systems
02 / Core stack
Signals I speak fluently.
Device networks
BLE, Wi-Fi, MQTT, LoRaWAN and robust device-to-cloud communication flows.
Sensing & telemetry
Sensor fusion, signal conditioning, local analytics and meaningful event pipelines.
03 / Selected builds
Proof in the circuit.
PulseMesh Gateway
A resilient edge gateway that aggregates vibration and temperature sensors, buffers telemetry offline and synchronizes to the cloud when connectivity returns.
ESP32-S3MQTTOTAFreeRTOS
TerraNode
Battery-first soil monitoring node with adaptive sampling and LoRaWAN uplinks for long-lived agricultural deployments.
STM32L4LoRaWANI²C
MotionTag
Compact motion tracker combining IMU data, BLE provisioning and on-device event classification.
nRF52BLEIMU
04 / Build protocol
From schematic
to signal.
Map
Define constraints, interfaces, power budget, sensing needs and failure modes.
Prototype
Bring up hardware quickly, instrument the firmware and validate the riskiest assumptions.
Harden
Test edge cases, connectivity loss, brownouts, OTA paths and long-run behavior.
Deploy
Ship observable devices with diagnostics, fleet metrics and maintainable update paths.
05 / Open channel
Have a device
worth building?
Tell me what the hardware needs to sense, control or communicate.
✉ alex.mercer@example.com
☎ +46 8 555 012 34
◈ Stockholm, SE