mark umina

embedded software engineer

location: nyc | boston
contact: mark.umina@gmail.com

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about

Embedded developer and consultant with 25 years of experience building low and high power connected devices on embedded Linux, RTOS and bare metal platforms.

platforms

bare-metal
freertos
embedded linux
mbed os/compiler

uC/processors last used

silicon labs efr32 and uc platforms
nvidia nano production/dev modules
nvidia tx2
esp32
ublox odin-w262
nordic-nrf
pic10-32
attiny series
imx6
nvidia tx1
tms320
msp430
stm32
multitech mdot

peripherals

sensors and actuators
smart home radios
flash/eeprom
cell modems 4G-LTE m2m (linux ppp and AT) and 5G (qmi interface)
analog to digital converters (adc)
pwm controllers
charge controllers
serial communication controllers
emif for ram/flash/fpga/cpld interfaces
network co-processors

protocols

qmi for cell
uvc cameras
tcp/ip
spi/i2c/uart/jtag/custom
ble (on bluedroid/nordic/bluez)
http(s)
mqtt
lora
zigbee
zwave
at-comand/parser
nordic dfu transport
modbus
proprietary framing

software modules

drivers
display
bootloader
application
wired and ota upgrade
system/program monitor
system provisioners
protocol parsers

linux-specific knowledge

u-boot source and boot scripting
kernel compilation/patching
logging
init/systemd
cmake/make/gcc
peripheral communication (spi/i2c/etc...)
c posix libraries
system monitoring
process resource monitoring
partition and disk/image management
secure data encryption/handling
device tree

electronics

digital circuit design/debug
low-power hardware/software
cpu/controller/soc selection & connectivity

languages

c/c++
bash
various asm
some python

commercial software dev tools

stm32cube ide
iar embedded workbench
rowley crossworks
atmel start/studio
ti code composer
keil uvision
mbed online and mbed studio

vm/container

vmware
virtualbox
vagrant
docker

hardware dev tools + related

oscilloscope
joulescope (favorite tool!)
current probes
function generator
logic and protocol analyzer
soldering/prototyping
welding and other metal fabrication
enclosure and potting

ai-assisted development

claude code
openai codex (cli and vs code)

recent roles held

staff field applications engineer at silicon labs
software due dilligence for aquisitions
embedded developer and consultant, 25 years
founder/member: www.threelabs.io