Firmware architecture
State machines, RTOS task design, interrupt discipline, bootloaders, OTA updates and hardware abstraction that stays testable.
C / C++FreeRTOSZephyr
Embedded / IoT engineering portfolio
Code that
meets reality.
I design firmware, connected devices and edge systems where timing matters: sensors become signals, signals become decisions, and decisions become dependable physical behavior.
telemetry online · low-power systems · hardware-aware software
01 / Field notes
Engineering
with a horizon.
I treat an embedded product like a timepiece: every interrupt, packet, sensor read and power decision has a place in the cycle, and the whole system has to keep good time in the field.
7device families shipped
38firmware releases
4connectivity stacks
31% power reduction
02 / Systems lab
The stack,
at the edge.
A role-specific capability map rather than generic percentages: firmware architecture, real-time behavior, sensing, connectivity and device operations.
Sensor systems
Bring-up and calibration for IMUs, environmental sensors, ADC paths and mixed-signal inputs with robust filtering and fault handling.
I²CSPIADC
Connected devices
Design reliable device-to-cloud paths with provisioning, secure transport, reconnect logic and telemetry shaped for constrained networks.
BLEWi-FiMQTT
Hardware-aware debugging
Trace timing and power problems from oscilloscope capture to firmware change, turning intermittent field behavior into reproducible evidence.
JTAGLogic analyzerCI hardware tests
94Firmware
90RTOS
87Connectivity
91Debugging
03 / Build history
From prototype
to field.
Experience shown as build phases, emphasizing the engineering decisions that make a device reliable after it leaves the bench.
Senior Embedded Engineer · Northstar Devices
Own firmware architecture for connected industrial sensors. Introduced OTA release discipline, hardware-in-loop regression tests and power profiling across a multi-device fleet.
IoT Firmware Engineer · Fieldline Labs
Built low-power telemetry nodes and gateway integrations, balancing battery life, radio reliability and remote diagnostics across changing field conditions.
Embedded Systems Engineer · CircuitWorks
Worked from schematic bring-up through production firmware, creating drivers, manufacturing tests and diagnostic tooling for sensor-heavy products.
04 / Featured work
Measured in
signals.
Selected case studies framed around constraints, intervention and measurable system behavior.
CASE / 001 · POWER
Battery life, recalibrated.
Reworked sensor scheduling, radio wake windows and sleep-state transitions for a remote monitoring node. The result: 31% lower average power without sacrificing telemetry cadence.
SLEEP → SAMPLE → FILTER → TX → SLEEP
ΔIAVG / -31%CASE / 002 · OTA
Updates without the truck roll.
Designed signed firmware delivery with staged rollout, rollback protection and device health reporting for distributed edge nodes.
Secure bootOTA
CASE / 003 · SENSING
Turning noisy motion into events.
Built a calibration and filtering pipeline that transformed raw IMU streams into stable motion states for a battery-powered device.
IMUDSP
05 / Contact
Let's build the
next signal.
For embedded architecture, IoT product development, firmware modernization or hardware-aware debugging, send a brief and I'll respond with the right next step.
Typical conversations cover firmware architecture, connectivity choices, device reliability, power budgets and the path from prototype to production.
✉ lars@example.com
☎ +45 32 55 01 77
◈ Copenhagen, DK
Replies within 2 business days