Sten Sandring - Development of control and monitoring firmware for traffic light systems

Q: Where is Sten based?

Sten is based in Neerach, Switzerland and can operate in on-site , hybrid , and remote work models.

Q: What languages does Sten speak?

Sten speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Sten have?

Sten has at least 28 years of experience. During this time, Sten has worked in at least 61 different roles and for 4 different companies . The average length of individual experience is 5 months . Note that Sten may not have shared all experience and actually has more experience.

Q: What is Sten's latest experience?

Sten's most recent position is Development of control and monitoring firmware for traffic light systems .

Q: What companies has Sten worked for in recent years?

In recent years, Sten has worked for Swiss energy provider .

Q: Which industries is Sten most experienced in?

Sten is most experienced in industries like Manufacturing , Automotive , and Healthcare . Sten also has some experience in Information Technology , Education , and Aerospace and Defense .

Q: Which business areas is Sten most experienced in?

Sten is most experienced in business areas like Product Development , Information Technology , and Research and Development . Sten also has some experience in Quality Assurance , Project Management , and Production .

Q: Which industries has Sten worked in recently?

Sten has recently worked in industries like Automotive , Manufacturing , and Energy .

Q: Which business areas has Sten worked in recently?

Sten has recently worked in business areas like Product Development and Information Technology .

Recommended expert

Neerach, Switzerland

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Experience

Dec 2024 - May 2025

6 months

Development of control and monitoring firmware for traffic light systems

Co-developed hardware design, board bring-up, and startup code; developed low-level peripheral drivers; implemented CAN communication protocols for sensors and actuators on an STM32 dual-core.
Implemented security requirements.
Technologies: GCC, Make, GDB, ST-Link, STM32, Dual-Core Cortex-M4/M7, CMIS, CAN.
Languages: C/C++ (C++-23).
Industry: traffic control systems.

Apr 2024 - Nov 2024

8 months

Development of microcontroller firmware for various nodes in traffic light systems

Co-developed hardware design, board bring-up, and startup code; developed low-level peripheral drivers; implemented communication protocols, sensors, actuators, and special modules (e.g. DCF77, identification, monitoring functions) on an STM32.
Implemented security requirements.
Technologies: GCC, Make, GDB, OpenOCD/ST-Link, STM32, Cortex-M33/M7, CMIS, TCP/IP (lwIP), NTP/SNTP, GNSS (GPS/GLONASS/Galileo/Baidu).
Languages: C/C++ (C++-23).
Industry: traffic control systems.

Nov 2023 - May 2024

7 months

Kernel driver development and matching microcontroller firmware

Developed firmware to manage multiple CAN interfaces with high load and availability on an STM32 microcontroller; created a protocol for an SPI interface; and developed a kernel driver to provide CAN network interfaces via SPI and the microcontroller in embedded Linux.
Technologies: Yocto, Device Tree, kernel, Linux drivers, STM32, ARM Cortex-A53, Cortex-M33, CANopen.
Languages: C.
Industry: traffic control systems.

Oct 2023 - Oct 2023

1 month

Driver adaptation and software porting

Brought up customer hardware under embedded real-time Linux; adjusted the device tree; brought up various hardware modules and handled communication with a support MCU.
Technologies: Yocto, Device Tree, kernel, Linux drivers, Cortex-A53, Cortex-M7, STM32.
Languages: C/C++.
Industry: traffic control systems.

Oct 2022 - Sep 2023

1 year

Evaluation and implementation of a TLS layer (TLS 1.3) for integration into multiple product families of a well-known company

Evaluated multiple open-source and commercial SSL/TLS libraries and implemented an API layer on existing communication structures and protocols.
Technologies: build system, GCC, encryption, TLS, RSA, ECC, certificates, OpenSSL, various embedded RTOS (e.g. Zephyr, FreeRTOS).
Languages: C/C++.
Industry: industrial sector.

Nov 2021 - Jul 2023

1 year 9 months

Memory and performance optimization on an industrial security gateway for a well-known corporation

Debugging, bug fixing, and performance optimization for an industrial gateway family.
Technologies: Yocto, virtual machines, Embedded Linux, networking, TLS/SSL.
Languages: C/C++.
Industry: Industrial.

Nov 2021 - Apr 2022

6 months

Gateway software for traffic monitoring systems (speed cameras)

Developed software to aggregate incident data and statistics and to remotely transmit the data (LTE, 5G) to a backend system for automated analysis and billing.
Technologies: ARM, Embedded Linux, LTE, 5G, TLS.
Languages: C, Python.
Industry: Transport.

Jan 2020 - Sep 2021

1 year 9 months

Switzerland

Co-development and consulting for a communications gateway

Swiss energy provider

The gateway is designed to connect customers' building infrastructure (electricity/gas meters, photovoltaic systems, etc.) via fiber optics to their IT.
The devices must meet specific requirements for encryption and tamper resistance (hardware + software).
Technologies: Docker, Embedded Linux, encryption, TPM, Mandatory Access Control, kernel, SPL, U-Boot, etc.
Languages: C/C++.
Industry: Energy supply.

Dec 2019 - Aug 2023

3 years 9 months

Consulting and maintenance of the build system

Took over the departing employee's know-how and continued customizing and improving the build system for the firmware across the entire product line.
Technologies: Docker, GitLab, CI, Make.
Industry: Automotive.

Nov 2018 - Jul 2019

9 months

Porting a customer application from netX50 to netX51

Initial commissioning of the customer's hardware on the new Hilscher netX51 processor.
Moved to HAL and adjusted all low-level modules.
Modified the USB driver and re-integrated it into the SOPAS engineering tool.
Technologies: ARM (Hilscher netX50/51).
Language: C.
Tools: GCC/Make, Eclipse, Lauterbach.
Industry: Industrial.

Jul 2018 - Dec 2020

2 years 6 months

Interim Head of Development & CTO

Temporarily led and restructured the development department in a medium-sized company.
Took over the department covering hardware development, software development, mechanical design, and optical design.
Assessed the current state of projects and team capabilities.
Reorganized projects and introduced new organizational tools, structures, and processes.
Streamlined communication with other departments (manufacturing, procurement, custom manufacturing, application engineering, marketing/sales).
Handled legacy projects, optimized existing products, and further developed a hyperspectral camera family.
Prepared for trade show events.
Optimized manufacturing by introducing new tools and processes.
Simplified device assembly by standardizing modules and components.
Revised documentation, bills of materials, and certification documents.
Implemented new quality standards, controls, and measurement methods.
Defined and developed a portfolio of various accessories.
Restructured and expanded the department team.
Technologies: hyperspectral imaging, Raman systems, single-point spectrometers, cameras and image processing, etc.
Sector: industry.

Apr 2018 - Jul 2018

4 months

Evaluation of a New Hardware Platform for a Customer Project on Embedded Linux (Yocto)

Commissioned the evaluation platform, integrated OpenCL and OpenCV, and ran performance tests on CPU and GPU using selected OpenCV algorithms.
Technologies: ARM Cortex-A53 (i.MX8), Embedded Linux.
Languages: C.
Tools: GCC/Make, device tree, Yocto.
Sector: industry.

Feb 2018 - Mar 2018

2 months

Porting Embedded Linux to a Customer-Specific Hardware Module on Embedded Linux (Yocto)

Commissioned the hardware module, ported the kernel, adjusted the device tree, and created a root file system.
Technologies: ARM Cortex-A7 (i.MX7), Embedded Linux.
Languages: C.
Tools: GCC/Make, device tree, Yocto.
Sector: transportation.

Jan 2018 - Aug 2019

1 year 8 months

Development of a Personal Tracker for Government Use

Developed a miniaturized tracker for locating individuals with long battery life, silent alarm, remote acoustic monitoring, fall detection, and vital sign monitoring.
Technologies: Cortex-M0+, GPS, LTE 4G, 5G, ultra-low-power, encryption, etc.
Languages: C.
Tools: GCC/Make.
Sector: government.

Oct 2017 - Aug 2018

11 months

Development of FPGA Logic and Firmware for a NIR Spectral Camera with a GenICam Interface

Developed logic for capturing images from the sensor, applying various complex image correction steps (bad pixel, smile, black/white, etc.), and implementing special features (e.g., multi-spectral ROI, spectral filtering, subsampling).
The pre-processed data is then passed from the FPGA through a framebuffer device to a MicroBlaze core and transmitted to a PC via a 1 Gbit Ethernet interface using the GenICam standard.
The camera is mainly used in waste management and the food industry.
Technologies: FPGA (Xilinx), MicroBlaze.
Languages: C, VHDL, Verilog.
Tools: GCC/Make, Vivado, Vivado SDK.
Sector: industry.

Apr 2017 - Dec 2017

9 months

Performance Optimization of a Mobile Router for Official Communications

Connected various field devices through the operations or rescue control center to the internal authority network of the police and fire & rescue services.
Optimized the kernel and various packages in the root filesystem, such as Mobile IP and IPsec, to achieve maximum data throughput over Ethernet, WLAN, GSM, UMTS, and LTE.
Ensured seamless switching between these interfaces while traveling to and from the operation site.
Technologies: ARM Cortex-A9 (i.MX6), Embedded Linux, SSL/IPsec, Handshake.
Languages: C/C++.
Tools: GCC toolchain, Qt/Embedded.
Industry: Telecommunications.

Mar 2016 - Sep 2017

1 year 7 months

Development of a Custom Embedded Root Filesystem and Embedded Software for a Process Gas Analyzer

Created an optimized compiler toolchain and embedded root filesystem, secured the root filesystem, and developed an update concept.
Designed the embedded software concept and interfaces, and defined communication interfaces and protocols.
Implemented various embedded low-level software modules for a gas analysis system to determine the mass spectrum of a gas.
Technologies: ARM Cortex-A8 (TI AM335x), FPGA (Xilinx Spartan-6), Embedded Linux, Root FS, POCO, Qt Embedded, Boost, …
Languages: C/C++.
Tools: GCC toolchain, Qt/Embedded.
Industry: Industrial.

Nov 2015 - Aug 2016

10 months

Development and Maintenance of a Custom Embedded Linux Root File System for a Camera-Based Tire Measurement System

Developed a custom, secured root file system for an industrial camera and built a field-ready update strategy.
Created automated test scenarios and scripts, secured the system with a firewall, and integrated test setups into the company network via VPN.
Optimized performance of various libraries.
Technologies: ARM Cortex-A9 dual-core, FPGA, Embedded Linux, iptables, OpenVPN, OpenSSL.
Languages: C/C++.
Tools: GCC, Make, build tools.
Industry: Industrial, Automotive.

Aug 2015 - Nov 2015

4 months

Performance Optimization of Various Image Processing Algorithms for an Embedded Stereo Camera Measurement System

Analyzed existing customer software algorithms and pre-optimized the processing chain through parallelization.
Optimized various image processing algorithms in assembly and tuned them for maximum efficiency on the processor hardware (i.MX6 + VFP/NEON).
Re-implemented OpenCV algorithms and optimized them in assembly.
Converted floating-point to fixed-point and used look-up tables.
Optimized cache access for each algorithm to achieve an overall 5x performance increase.
Technologies: ARM Cortex-A9 quad-core, Embedded Linux, image processing, algorithms.
Languages: C/C++, assembly, OpenMP.
Tools: GCC, OpenCV, OpenCL.
Industry: Industrial.

Dec 2014 - Mar 2015

4 months

Development of Linux Drivers and Libraries for a High-Speed Spectral Camera System

Developed real-time drivers and an API library to make the spectral cameras connected via Gigabit Ethernet usable for customers under Linux.
Assembled, buffered, corrected, and preprocessed incoming image data for further processing.
Created a demo to show a false-color image for different material groups.
Technologies: Linux, Embedded Linux, Qt/Embedded.
Languages: C, assembly.
Tools: GCC, Make, Qt, etc.
Industry: Industrial.

Aug 2014 - Dec 2017

3 years 5 months

Creation and maintenance of a customer-specific, optimized Embedded Linux image for ARM Cortex-A9 (OMAP4, iMX6)

Created a build environment for building a root filesystem image that was specifically optimized for project requirements such as size, boot speed, features, and maintainability.
Used a compiler with hardware floating-point support and calling convention (arm-linux-gnueabihf) for maximum performance.
Technologies: ARM Cortex-A9, Embedded Linux, Qt/embedded.
Languages: C/C++, Python, scripting.
Tools: GCC, Make, Qt, etc.
Industry: medical, industrial.

Apr 2012 - Feb 2018

5 years 11 months

Development of an I/O library, control software, and user interface (GUI) for an industrial control system for measurements

Implemented an I/O library to access the hardware (ADCs, DACs, digital IOs) of the control system.
Implemented measurement algorithms and procedures for controlling the system and processing the measurement data.
Implemented the user interface for operating the control system using Qt/embedded and connected it to various databases.
Technologies: ARM Cortex-A9 dual-core, Embedded Linux, Qt/embedded, MySQL, MS-SQL, Oracle DB.
Languages: C/C++, XML.
Tools: GCC, QMake, etc.
Industry: industrial.

Jan 2012 - Oct 2016

4 years 10 months

Hardware and software development of electronics in a medical device for eye surgery

Developed control, measurement, and display electronics, and implemented control and measurement software to determine various parameters during eye surgery.
Overlaid information and guidelines into the optical path of a microscope.
Technologies: FPGA (Xilinx), microcontroller (ARM Cortex).
Languages: VHDL, C, assembly, Python.
Tools: GCC, Make, Python, ISE.
Industry: medical technology.

Dec 2011 - Jun 2012

7 months

Development of various I/O functions in an FPGA and the associated kernel driver

Implemented I/O functions for controlling and reading ADCs, DACs, CAN controllers, PWMs, and quadrature encoders in an FPGA (Spartan-3).
Developed a generic PCI driver for low-level communication with the FPGA, as well as high-level drivers and an API library.
Developed test tools.
Technologies: FPGA, PCI Express.
Languages: VHDL, C, Python.
Tools: GCC, ISE.
Industry: industrial.

Oct 2011 - Nov 2011

2 months

Development of a quadrifilar antenna for GPS

Calculated and tested a PCB-based, circularly polarized, self-phased quadrifilar antenna for the L1 and L2 frequencies of the Navstar GPS system.
Technologies: RF, antenna technology.
Tools: RF measurement equipment.
Industry: various.

Sep 2011 - Dec 2011

4 months

Development of an emergency and tracking transmitter

Hardware and software development of a miniaturized battery-powered RF transmitter that sends digital status information into the APRS network.
Use of the EAI function (Emergency Automatic ID) as an emergency and tracking transmitter.
Technologies: CC430, RF, sensors.
Languages: C, assembly.
Tools: Eagle, MSPGCC, Make, RF measurement technology.
Industry: other.

Jun 2011 - Dec 2011

7 months

Development of a parameterizable PCI and PCI Express IP core for FPGAs and a modular Linux kernel driver

Developed an IP core for PCI and PCI Express to connect to various peripherals, and a dynamic modular DKMS kernel driver.
Technologies: FPGAs (Xilinx), PCI, PCI Express, Linux.
Languages: C, VHDL.
Tools: GNU GCC, Xilinx ISE Webpack, wxPython, Make.
Industry: industrial.

Apr 2011 - Dec 2011

9 months

Development of a kernel driver for a medical device

Developed a Linux DKMS driver to control various functions in an FPGA, which operates different sensors, actuators, and a camera.
Technologies: FPGAs (Xilinx, Altera), (embedded) Linux, PCI, HID.
Languages: C, VHDL, Verilog.
Tools: GNU GCC, Xilinx ISE Webpack, wxPython, Make.
Industry: medical.

Feb 2011 - Mar 2011

2 months

Development of a motion and vibration detector

Hardware and software development for a system to detect movements of a device for precise measurement of floating contact lenses.
Technologies: MSP430, sensors, filters, algorithms, USB.
Languages: C, Python.
Tools: Eagle, GNU GCC, wxPython.
Industry: medical/industrial.

Oct 2010 - Jan 2012

1 year 4 months

Hardware and software development for controlling an optical measurement system in ophthalmology

Design, hardware development, and firmware development for various intelligent sensor and actuator boards to perform different optical measurements on the human eye.
Series preparation, accompanying EMC and safety tests, and subsequent production of electronic components.
Technologies: ARM7, MSP430, sensors, actuators, CAN, Ethernet, USB.
Languages: C.
Tools: Eagle, GNU GCC, wxPython, Make.
Industry: medical.

Aug 2010 - May 2013

2 years 10 months

Self-developed IMU system (private)

Hardware and software development of a sensor system to measure linear and angular accelerations and the magnetic field vector for highly accurate determination of position, orientation, and changes in position and location.
Technologies: Blackfin, sensor technology, filters, data fusion (EKF), algorithms.
Languages: C, assembly, Phyton.
Tools: Eagle, GNU GCC, wxPhyton.
Industries: various.

Aug 2010 - Sep 2010

2 months

Development of a high-resolution altimeter

Hardware and software development of an altimeter using an air pressure sensor with centimeter-level resolution.
Technologies: MSP430, sensor technology, filters, algorithms.
Languages: C, assembly, Phyton.
Tools: Eagle, GNU GCC, wxPhyton.
Industries: various.

Dec 2009 - Jan 2010

2 months

Hardware development for adapting custom camera sensors

Schematic and layout design of various adapters for connecting and signal conditioning/preprocessing of miniaturized image sensors for endoscopy.
Technologies: USB, Camera Link, FPGAs (Spartan3, Spartan6).
Tools: Eagle, Altium Designer.
Industries: medical technology, industry.

Nov 2009 - Jan 2010

3 months

Implementation of encryption routines, code reviews, software optimization, and system hardening

Implementation of various security features, code reviews of existing software, and optimization and hardening of the entire software.
Technologies: codecs, cryptography.
Languages: C/C++, assembly.

Sep 2009 - Aug 2010

1 year

Self-developed software solution for transparent voice encryption in mobile communications

Protocol and software implementation for an Android application for point-to-point encryption of voice data.
Establishment of an encrypted tunnel on the CSD channel for secure data transmission.
Technologies: Android/ARM9, CSD, TCP/IP, codecs, cryptography, protocols, crypto smart cards.
Languages: C/C++, Java, Java Native.
Tools: GCC, Lint, Android SDK, Android NDK.
Industries: mobile communications, telecommunications.

Aug 2009 - Jul 2011

2 years

Software for real-time decoding of barcodes at high speeds

Mathematical simulation and later implementation of optimized software for reliable reading of miniaturized barcodes in a technical system.
Modification of an existing barcode standard to maximize information density and error tolerance.
Technologies: TI C2000, Barcodes, ECC, Wavelets, Pattern Recognition, Filters, CAN.
Languages: C/C++, Assembly, Octave.
Tools: CodeComposer, GCC, GNU Octave, GNUplot.
Industry: medical technology.

Aug 2009 - Oct 2009

3 months

Development of a control system for an analog high-end hi-fi amplifier

Hardware and software development of the digital control for an analog high-end amplifier.
Receiving and decoding remote control signals, switching and monitoring the analog amplifier paths.
Technologies: MSP430, RC5.
Languages: C.
Tools: GCC.
Industry: consumer electronics.

Mar 2009 - Sep 2009

7 months

Hardware and software development for a gateway enabling transparent encryption of ISDN and mobile phone calls

Design and co-development of the gateway hardware, driver development, porting, configuration, and development of software components for encryption.
Implementation of proprietary communication protocols, audio and crypto algorithms.
Technologies: microcontrollers (Cortex-A8), DSP (TMS320C55x), FPGA (Spartan-3), cryptography, audio codecs, protocols, interfaces, crypto smart cards.
Languages: C/C++, Shell.
Tools: GCC, OpenEmbedded, Embedded Linux, Asterisk, Yate.
Industry: mobile communications, telecommunications.

Feb 2009 - Jun 2009

5 months

In-house development of a 3D Helmholtz coil system

Design and construction of the three-dimensional coil system, as well as hardware and software development for the control to generate weak magnetic field vectors.
Technologies: MSP430, ARM7, PC, sensors, physics, higher mathematics.
Languages: C, wxPython.
Tools: GCC.

Feb 2009 - Apr 2009

3 months

In-house development of a shock event logger

Development of various modules and implementation of the firmware for autonomous recording of shock events for transport monitoring.
Technologies: MSP430, sensors.
Languages: C, Assembly, build environments.
Tools: GCC, Make, Binutils.
Industries: industrial, transportation.

Jan 2009 - Mar 2009

3 months

Development of a fiber-optic bus multiplexer for fire alarm systems

Hardware development and programming of FPGAs to transparently connect multiple fire alarm bus systems over a fiber-optic link.
Technologies: FPGA (Spartan-3AN), optoelectronics.
Languages: Verilog, VHDL.
Tools: ISE, Impact, Altium Designer.
Industry: industrial, building automation.

Aug 2008 - Mar 2009

8 months

Hardware and software development of a tilt-compensated digital compass system

Development of a module to measure the north heading considering the system's orientation (tilt).
Implementation of the firmware and associated performance-optimized filters and mathematical algorithms.
Technologies: MSP430, sensors, digital filters.
Languages: C, assembly, wxPython.
Tools: GCC, Make, Binutils.

Feb 2008 - Nov 2008

10 months

Software development for an embedded Linux-based ticket validation system

Build environment, porting, driver development, configuration, development of a proprietary encrypted communication protocol, scripting, radio connectivity.
Project for large events (e.g., UEFA Euro 2008) with remote database connection.
Technologies: XScale, embedded Linux, TCP/IP, GPRS, DECT, WLAN, cryptography, AES.
Languages: C/C++, assembly, shell, Perl, HTML.
Tools: GCC, OpenEmbedded, Embedded Linux.

Feb 2007 - Mar 2008

1 year 2 months

Hardware and software development of an autonomous camera system for surveillance tasks

Development with a proprietary RTOS and an open-source DSP camera platform under uClinux.
Linux porting, driver development (SD/MMC, PPI), and development of various assembler-optimized DSP algorithms.
Technologies: ARM9, Blackfin, SD/MMC, MicroSD, PPI.
Languages: assembly, C, uCLinux.
Tools: GCC, Embedded Linux.
Industry: industrial, research, consumer.

Dec 2006 - Jun 2007

7 months

Development of a graphical XML-driven software on a proprietary PDA for medical studies

Development of application software and various drivers for a custom-built PDA without an operating system.
Implementation of an efficient cooperative multitasking operating system, a graphics library, and communication protocols.
Technologies: ARM, TCP/IP/PPP, GPRS, SD/MMC.
Languages: C/C++, assembly.
Tools: HiTec, GCC.
Industry: medical.

Sep 2006 - Aug 2007

1 year

Co-development of an AVLink/CEC software stack for consumer electronics devices

Implementation of the Consumer Electronics Control (CEC) protocol according to the HDMI specification and an embedded API.
Analysis and reverse engineering of competitor products (Full HD TVs).
Technologies: platform-independent, Sony OSA layer, Sony MSE.
Languages: C, C++, Perl.
Tools: various compilers for testing, embedded Linux.
Industry: consumer electronics.

May 2006 - Aug 2006

4 months

Development of a cryptographic bootloader and control system for ventilation devices

Development for scientific and military deep-sea diving equipment.
Implementation of the bootloader, crypto algorithms (GnuPG/PGP), the operating system, and the functionality for gesture recognition.
Technologies: ARM7, cryptography, sensors.
Languages: C, assembly.
Tools: GCC, Make, OpenOCD, GDB, Insight.
Industry: industrial, military.

Jan 2006 - Dec 2007

2 years

Germany

Lecturer, Computer Science degree program

Nuremberg University of Applied Sciences

Oct 2005 - Mar 2006

6 months

Hardware and software development of a cascadable control system for a fault generator

Development of a cascadable control system (with CAN manipulation) for testing automotive control units under real-world conditions.
Technologies: ARM7, CAN.
Languages: C, assembly.
Tools: GCC, Make, OpenOCD, GDB, Insight.
Industry: automotive.

Apr 2005 - Jun 2006

1 year 3 months

Hardware and software development of a DSP/FPGA-based high-speed camera system for traffic monitoring

A set of multiple cameras to resolve objects at speeds up to 180 km/h.
Development of the DSP software (TCP/IP stack) and the PC analysis software for Linux/X11 and Windows.
Technologies: DSP (Blackfin), FPGA (Spartan), JPEG2000, TCP/IP.
Languages: assembly, C/C++.
Tools: VisualDSP, Qt, GCC, Make, embedded Linux.
Industry: industrial.

Jul 2004 - Jul 2005

1 year 1 month

Hardware and software development for a patient remote monitoring system

Development of a database-based software system on Linux for automatic remote monitoring of high-risk patients.
Development of the transponder hardware in collaboration with Fraunhofer Institute IIS.
Technologies: PC/x86, GPRS, DSL, TCP/IP, Bluetooth, WLAN.
Languages: C/C++, Perl, CGI, PHP.
Tools: GCC, Make, Qt, mySQL, Embedded Linux.
Industry: Medical technology.

May 2004 - Dec 2010

6 years 8 months

Custom development of a robust and efficient real-time operating system (RTOS) for small microcontrollers

Custom development of a small RTOS with minimal performance overhead and memory footprint.
Includes hardware drivers for various processors and optional modules like cryptography and TCP/IP.
Technologies: ARM7, ARM9, m68k/Coldfire, TCP/IP, SD/MMC.
Languages: C, Assembly, Perl.
Tools: GCC, Make, OpenOCD, GDB, Insight.

Mar 2003 - Jun 2006

3 years 4 months

Development of a uClinux-based controller for remote monitoring and control of industrial plants

Development of the hardware and porting of uClinux, as well as development of various Linux drivers for web-based remote monitoring.
Technologies: Coldfire, GSM/GPRS, TCP/IP.
Languages: Assembly, C/C++, HTML, CGI.
Tools: GCC, Make, uClinux, GDB, Insight.
Industry: Industrial.

Jan 2003 - Mar 2005

2 years 3 months

Hardware and software development of the measurement control for VDE test equipment

Development of a DSP/µC control system for device safety tests according to VDE and ÖVE standards.
Creation of the hardware concept, circuit design, implementation of a space-optimized TCP/IP stack and measurement algorithms.
Technologies: m56800, ARM7, TCP/IP/PPP.
Languages: Assembly, C/C++.
Tools: Embedded Linux, CodeWarrior, GCC, Make, GDB, Insight.
Industry: Industrial.

Aug 2001 - Aug 2004

3 years 1 month

Hardware and software development of a remote monitoring system for vehicles in fleet management

Development of a system for collecting and sending vehicle data via GPRS to a central database.
Implementation of a cooperative operating system, all protocols and firmware.
Technologies: PICMicro, HC08/12, GPRS, CAN, LIN.
Languages: Assembly, C/C++, HTML, PHP, CGI.
Tools: MPLAB, CodeWarrior, GCC, Qt, mySQL.
Industry: Automotive.

Feb 2001 - Dec 2002

1 year 11 months

Germany

Various hardware and software developments for the Institute for Electronic Systems

Nuremberg University of Applied Sciences

Jan 2000 - Dec 2004

5 years

Germany

Collaboration / Research Project

Competence Network for Scientific High-Performance Computing (KONWIHR)

Analyzing image processing algorithms for parallelizability.
Parallelizing these software algorithms with OpenMP and simulating them on a parallel computer (SGI Origin).
Preliminary stage for hardware parallelization using Handel-C.
Technologies: SGI Origin, OpenMP, MPI, VHDL, Handel-C.
Languages: C/C++.
Tools: GCC.
Industry: Research & Science.

Dec 1999 - Aug 2001

1 year 9 months

Software development for test and measurement devices of the new digital aeronautical radio network

Mar 1999 - Mar 2000

1 year 1 month

Germany

Co-development of test and measurement devices for a digital broadcast satellite

Fraunhofer Institute (IIS)

Aug 1998 - Apr 2000

1 year 9 months

Planning and installation of WLAN radio links (IEEE 802.11)

Planning and installation for companies and organizations.

Jul 1997 - Mar 1999

1 year 9 months

Hardware and software development for a GPS-based tracking system for emergency vehicles

Development for use in a government radio network.

Germany

Career path as a communications officer in the army's field service

German Armed Forces

Specialized training at the army's Signal School and the Bundeswehr Technical School for Electrical Engineering in Feldafing.

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Manufacturing, Automotive, Healthcare, Information Technology, Education, and Aerospace and Defense.

Manufacturing

Automotive

Healthcare

Information Technology

Education

Aerospace and Defense

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Product Development, Information Technology, Research and Development, Quality Assurance, Project Management, and Production.

Product Development

Information Technology

Research and Development

Quality Assurance

Project Management

Production

Skills

Specialization: Board-Specific Bootloaders, Boot Time Optimization
Linux Kernel, Real-Time Kernel, Kernel Driver Development
Embedded Linux Root Filesystems
Hardware-Level Firmware Development
Bare-Metal Development (Without Operating System)
Algorithms, Digital Filters
Performance Optimization, Parallelization, Gpu Programming
Complex Build Systems On Linux
Logic Programming With Vhdl/Verilog
Requirement Analysis
Specification Writing
Embedded Software Development And Evaluation
Development Of Small Hardware Modules
Prototyping
Documentation
Consulting
Architectures: Arm, X86 (X64), Mips, Dsps, Xilinx Fpgas, Cuda Cores, Amd Streaming Processors
Operating Systems: Various Embedded Rtos (Embos, Mbedos, Freertos, Zephyr), Embedded Linux (Native/Lfs, Armbian, Debian, Buildroot, Yocto, Openembedded), Linux (Debian, Arch)
Programming Languages: Assembly, C/C++ (C++-23), Opencl C, Glsl, Cuda, Shell, Bash, Perl, Python, Make, Cmake, Autotools, ...
Extensions/Apis: Openmp, Opencl, Opengl/Es, Vulkan, Opencv
Hardware Languages/Tools: Vhdl, Verilog, Ise/Impact, Vivado
Others: Amateur Radio License Class A (Cept) Since 1994
Industries: Industry, Telecommunications, Medical Technology, Consumer Electronics

Languages

German

Native

English

Advanced

Education

Nuremberg University of Applied Sciences

Diploma Engineer (FH) · Electrical engineering, specialization in microelectronics/communication engineering · Nuremberg, Germany

Army Signal School and Technical College for Electrical Engineering of the German Armed Forces

Training as an Army signal officer in field service · Feldafing, Germany

Certifications & licenses

Amateur radio license class A (CEPT)

Statistics

Experience

Total positions 62

Experience in Manufacturing 17.5 y

Avg length 1 y 3 m

Longest experience 6 y 7 m

Global Experience

Countries worked in 2 (Germany, Switzerland)

Primary country Germany

Expertise

Recent roles Development of control and monitoring firmware for traffic light systems, Development of microcontroller firmware for various nodes in traffic light systems, Kernel driver development and matching microcontroller firmware

Main industries Manufacturing, Automotive, Healthcare

Main business areas Product Development, Information Technology, Research and Development

Qualifications

Highest degree Bachelor

Certifications earned 1

Profile

Created

June 2025

Last Update

June 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Sten based?

Sten is based in Neerach, Switzerland and can operate in on-site, hybrid, and remote work models.

What languages does Sten speak?

Sten speaks the following languages: German (Native), English (Advanced).

How many years of experience does Sten have?

Sten has at least 28 years of experience. During this time, Sten has worked in at least 61 different roles and for 4 different companies. The average length of individual experience is 5 months. Note that Sten may not have shared all experience and actually has more experience.

What roles would Sten be best suited for?

Based on recent experience, Sten would be well-suited for roles such as: Development of control and monitoring firmware for traffic light systems, Development of microcontroller firmware for various nodes in traffic light systems, Kernel driver development and matching microcontroller firmware.

What is Sten's latest experience?

Sten's most recent position is Development of control and monitoring firmware for traffic light systems.

What companies has Sten worked for in recent years?

In recent years, Sten has worked for Swiss energy provider.

Which industries is Sten most experienced in?

Sten is most experienced in industries like Manufacturing, Automotive, and Healthcare. Sten also has some experience in Information Technology, Education, and Aerospace and Defense.

Which business areas is Sten most experienced in?

Sten is most experienced in business areas like Product Development, Information Technology, and Research and Development. Sten also has some experience in Quality Assurance, Project Management, and Production.

Which industries has Sten worked in recently?

Sten has recently worked in industries like Automotive, Manufacturing, and Energy.

Which business areas has Sten worked in recently?

Sten has recently worked in business areas like Product Development and Information Technology.

What is Sten's education?

Sten holds a Bachelor in Electrical engineering, specialization in microelectronics/communication engineering from Nuremberg University of Applied Sciences.

Does Sten have any certificates?

Sten has 1 certificate: Amateur radio license class A (CEPT).

What is the availability of Sten?

Sten is immediately available full-time for suitable projects.

What is the rate of Sten?

Sten's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.