Teczito AB · Vallentuna, Sweden
Firmware development, on contract.
Twenty years of embedded software for systems that have to work the first time and keep working — real-time control, embedded Linux and power electronics. Available for contract engagements.
What I do
I work as an extra pair of experienced hands inside your engineering team, or take a firmware deliverable end to end — from schematic to shipped, tested binary.
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Microcontroller firmware
Bare-metal and RTOS-based embedded C for 8- to 32-bit targets: peripheral drivers, communication stacks and the hard real-time paths where timing is a requirement rather than a hope.
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Embedded Linux & Yocto
Board support, kernel and device-driver work, and reproducible Yocto / OpenEmbedded distributions — including the build infrastructure needed to rebuild an image years from now.
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Digital control & power electronics
Control loops, measurement and signal processing on embedded targets, in the high-voltage and high-current domain where the software and the hardware cannot be reasoned about separately.
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Test-driven embedded development
Unit-tested embedded C on host and on target, built and verified in continuous integration. Firmware you can change in year three without holding your breath.
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Hardware bring-up & debugging
First power-on, and the awkward faults after it. Comfortable at the bench with an oscilloscope and logic analyser, and reading the schematic that explains what the code is really talking to.
Selected work
A selection of contract engagements. Descriptions are kept to what the respective agreements allow.
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Embedded control software for a high-power, high-precision current generator built for research use. The regulation runs on Texas Instruments microcontrollers, where holding accuracy and stability at high output current is the whole point of the instrument.
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An ongoing engagement covering several projects across the instrument range, spanning both bare-metal firmware and Yocto Linux development for embedded Linux platforms:
- Bare-metal C firmware on several MCUs e.g., Xilinx UltraScale+, STM32, ESP32, Texas Instruments
- Yocto development for an NXP i.MX8 Linux platform
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Firmware development for a battery cycler system — the equipment that drives cells through controlled charge and discharge profiles in order to characterise how they behave. Built on STM32 microcontrollers.
About
Teczito AB is a one-person firmware consultancy run by Ruben de Schipper from Vallentuna, outside Stockholm.
I hold an MSc in Electrical Engineering from Delft University of Technology, majoring in Systems Engineering, and have spent two decades writing embedded software — first in automotive at Hitachi Automotive Systems, Rialtosoft and BRACE Automotive in the Netherlands, then for a decade at Megger Sweden building instruments for electrical test and measurement. Since 2022 I have worked independently through Teczito.
That path means I am as comfortable with a control loop and an oscilloscope as with a build pipeline and a test suite — which in embedded work turns out to be the same job.
Languages Dutch (native) · English (fluent) · Swedish (fluent)
Contact
Have a firmware project, or a team that is one engineer short? Get in touch.
- ruben@teczito.com
- Based in
- Vallentuna, Sweden
- ruben-de-schipper
- GitHub
- teczito