Senior Embedded Linux Software Engineer (C/C++ | Python)

Early integration of new FPGA generations/releases into a vendor-specific embedded Linux software system for system verification (feedback loop) in a Scrum setup (FPGA & software teams).

• Software-side adaptation/porting of image processing for new FPGA generations/releases

• Modernisation of a central processing component including technical documentation

• Code generation (Python/JSON) for consistent configuration (software and FPGA side) and documentation

• Extension of internal debug tools, including for remote control/automation

• Additionally: unit tests (Catch2), reviews/knowledge transfer (including onboarding), manual hardware tests and analysis of CI hardware tests (Jenkins)

Side project (parallel to main project; ~4 project days/month), single-person project: prototype container-based solution on PLCnext (embedded Linux) for datalogger configuration/readout, local archiving and web API + web UI.

• C/C++ core components for datalogger access and configuration

• Containerised services for configuration/diagnostics, data query, archiving/compression

• Containerised web API + web UI (Python/bindings) for querying and visualising data

• Automated deployment/installation

Multi-phase long-running project in 2D industrial camera/3D ToF/sensor environment: from Windows/Qt desktop application via embedded feature and algorithm integration to hardware commissioning.

• 09/2020–04/2022 – Multi-sensor device: commissioning of image data path (Yocto/NVIDIA Jetson) + sensor integration (incl. IMU); description-based code generation (Python/JSON) for C++

• 04/2018–06/2020 – 2D/3D features & algorithms: system features (incl. streaming/transfer) and algorithms (image processing and quality functions); prototyping/tests in Python and implementation/integration in C/C++

• 03/2017–07/2017 – OSS C++ library (side project, ~4 project days/month): boost::asio configuration client + async callbacks + sample code; extension of data acquisition (incl. metadata)

• 08/2016–11/2016 – Embedded system topics: UDP performance/stability (Raspberry Pi setup/iPerf/Wireshark), time synchronisation (NTP/chrony)

• 01/2016–07/2016 – Windows/Qt desktop application: Qt custom widgets & UI extensions for sensor configuration/visualisation

• Throughout: implementation/integration, debugging/refactoring, reviews; build/CI (Jenkins/GitLab CI) and test coverage as per phase; collaboration across multiple teams/areas

Port of a C#/.NET Windows desktop application to a C++/Qt Linux CLI application for automated firmware updates of Z-Wave devices/controllers in a Linux-based energy system; Debian packaging, test coverage, success/stability statistics; evaluation of mesh/routing behaviour with devices from different manufacturers.

• Port C#/.NET/Windows to C++/Qt Linux CLI including Debian packaging

• Automated update runs: test coverage plus success/stability statistics; Z-Wave mesh/routing evaluation

Windows tools in C#/.NET for manual and automated verification of a low-level API (C/C++) on embedded Linux targets. Phase 1: WPF/MVVM test GUI + SWIG (in Scrum team). Phase 2: C# test framework (extension, automation, reporting/trace, integration of additional test hardware).

• Test GUI (= Windows desktop application): parameterised API calls, log/result view; SWIG interop partially supported/maintained

• Test framework: prioritisation/control and targeted abort/stop of test runs; reporting/trace via Roslyn + code injection (AOP-like); additional test hardware integrated

Android development in Scrum team (design/Android/iOS): contribution to two consumer apps with focus on UI implementation, image editing and manual testing.

• Postcard app: high-res image editing via touch (scale/rotate/filter) including snapping; performance/memory optimisation

• Comparison portal app: UI/screens implemented to design specs; manual testing on various smartphones/tablets

Ramp-up in Flutter/Dart; small prototype to refresh and validate modern mobile toolchains.

Several apps conceived, implemented and published; focus on UI/UX, persistence and store release (no longer maintained; may not be compatible with current Android versions).

• "Trainiere Einmaleins – 1x1" (100,000+ downloads, 4.4★): Link to Google Play Store

• "Minigolf Punktekarte" (5,000+ downloads, 4.7★): Link to Google Play Store

Marker-based stereo 3D measurement system for deriving individual bicycle geometry/settings; in-store prototype (guided workflow, visualisation, digital product catalogue, pilot use). EXIST start-up grant (BMWi, 2012–2013); award in "IKT Innovativ" start-up competition (IFA 2014); CeBIT 2016 trade fair.

• Computer vision 2D/3D: marker detection (2D) + 3D point determination (calibration/reconstruction pipeline); Windows app (C++): guided measurement process + visualisation

• Android tablet as control frontend (connected via WLAN to measurement station), catalogue navigation; prototype setup/deployment

Chair of Robotics and Embedded Systems. Topic: human/robot coexistence: 2D/3D algorithms for conservative reconstruction of free/occupied 3D regions from a calibrated multi-camera system - for collision- and injury-free industrial robotics in a shared workspace (research prototype).

• Algorithms/methods: free-space/occupancy models (3D, voxel space) from multi-view 2D; handling occlusions/artefacts (plausibility: minimum volume/thickness, ground binding, temporal consistency)

• Vision pipeline: background subtraction/segmentation; distributed preprocessing per camera plus central fusion/3D evaluation (near real-time)

• Robotics integration: joint angles for dynamic modelling/occlusion; feedback to robot control (prototype: stop on entry into restricted zones)

• Implementation: algorithm implementation and device integration in C/C++ with suitable open-source libraries and frameworks.

• Setup and commissioning: Linux setup (distributed PCs plus central server), robot integration (Stäubli RX130b, ABB IRB 4600), GigE cameras (e.g. SVS-VISTEC eco204CVGE), assembly and camera calibration (university plus evaluation site)

Publications (selection)

• Dissertation 2012 (University of Bayreuth), S. Kuhn: "Wissens- und sensorbasierte geometrische Rekonstruktion"; urn:nbn:de:bvb:703-opus4-10458 YouTube: Demonstration in doctoral colloquium

• ISVC 2009 (Las Vegas, NV, USA), S. Kuhn, D. Henrich: "Multi-view Reconstruction of Unknown Objects within a Known Environment"; https://doi.org/10.1007/978-3-642-10331-5_73

• IROS 2007 (San Diego, CA, USA), S. Kuhn, D. Henrich: "Fast Vision-Based Minimum Distance Determination Between Known and Unknown Objects"; https://doi.org/10.1109/IROS.2007.4399208

• ICRA 2006 (Orlando, FL, USA), D. Henrich, S. Kuhn: "Modeling Intuitive Behavior for Safe Human/Robot Coexistence and Cooperation"; https://doi.org/10.1109/ROBOT.2006.1642304

Transfer/Teaching

• Final evaluation setup at automotive manufacturer (2011)

• Demonstrator (earlier system state) at Automatica Munich and Hannover Messe (2008)

• Running/supervising "C++ practical course"

• Supervising student theses/projects (visualisation/debugging 3D reconstruction, camera placement, tooling)

Focus: computer graphics, software development, robotics, embedded systems. Degree 2004: Diplom-Informatiker (Dipl.-Inf.)

• Diploma thesis: 3D kinematics/numerics: forward/inverse transformation of parallel-kinematic structures (e.g. hexapod) via Newton-Raphson/Householder; constraints derived/parameterised; Wolfram Research Mathematica for equation derivation and code generation; generic model description (joints/actuators/topology) – kinematics directly controllable including simple 3D visualisation; Java for prototyping, implementation in C++.

• Research assistant (2001–2004):

  • Weather station data web visualisation (HTML + Java applet frontend; CGI/Perl/Apache backend): configurable via applet parameters; selective/interactive loading of measurement channels; chart with scroll/zoom

  • File/print server on Debian (Samba/CUPS) including Perl tooling for configuration