Matthias Spiller - Software Developer and Consultant

Q: Where is Matthias based?

Matthias is based in Böblingen, Germany and prefers 100% remote projects.

Q: What languages does Matthias speak?

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

Q: How many years of experience does Matthias have?

Matthias has at least 19 years of experience. During this time, Matthias has worked in at least 7 different roles and for 9 different companies . The average length of individual experience is 1 year . Note that Matthias may not have shared all experience and actually has more experience.

Q: What is Matthias's latest experience?

Matthias's most recent position is Software Developer and Consultant at CLADE GmbH .

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

In recent years, Matthias has worked for CLADE GmbH , confidential , Vector Informatik GmbH , Fari Software GmbH , and Advantest Europe GmbH .

Q: Which industries is Matthias most experienced in?

Matthias is most experienced in industries like Manufacturing , Automotive , and Information Technology .

Q: Which business areas is Matthias most experienced in?

Matthias is most experienced in business areas like Information Technology , Product Development , and Project Management . Matthias also has some experience in Quality Assurance , Operations , and Business Intelligence .

Q: Which industries has Matthias worked in recently?

Matthias has recently worked in industries like Information Technology , Automotive , and Manufacturing .

Q: Which business areas has Matthias worked in recently?

Matthias has recently worked in business areas like Information Technology , Product Development , and Operations .

Recommended expert

Böblingen, Germany

Check rate

Experience

Apr 2025 - Jun 2025

3 months

Esslingen, Germany

Software Developer and Consultant

CLADE GmbH

Analysis of the existing CAN communication between microcontrollers
Analysis of the sensors used and the measured values collected
Planning the CAN messages for transmitting the measured values
Iterative adjustment of the microcontroller code to the new CAN messages
Cross-compilation from x64 to arm64

Jan 2025 - Mar 2025

3 months

London, United Kingdom

Software Developer and Consultant

confidential

Parsing C# code with Roslyn
Dynamically extending C# code with new methods, classes, properties, and fields
Generating C# code as mocks
In-memory compilation of C# projects with error analysis
Providing the functionality through a Web API (REST)
Reworking a prototype into a production-ready solution
Reducing technical debt through architectural rework and creating unit tests

Sep 2024 - Dec 2024

4 months

Esslingen, Germany

Software Developer and Consultant

CLADE GmbH

Code and architecture review
Sparring partner for questions about software development and architecture
Analysis of bus system communication
Automated testing of embedded code

Mar 2024 - Apr 2024

2 months

Esslingen, Germany

Software Analyst and Developer

CLADE GmbH

Analysis of crash dumps and memory leaks on Embedded Linux, memory profiling
Runtime analysis with debugger, valgrind, and ThreadSanitizer on a single-board computer with Embedded Linux
Analysis of bus system communication
Debugging embedded code, sensors, and actuators of a microprocessor
Fixing memory management and multithreading issues in C++ and C#
Documenting the findings, solutions, and best practices to avoid the problems

Jan 2024 - Mar 2024

3 months

Stuttgart, Germany

Software Developer, Test Developer

Vector Informatik GmbH

Analysis of the ASAM interface definition and the existing code
Implementing the ASAM XIL interface in C#
Connecting the existing C++ code through an RPC interface
Implementing the functionality in C++
Mapping ASAM commands to the bus system level
Creating development-accompanying and automated tests with CAPL and NUnit

Dec 2023 - Jun 2024

7 months

Böblingen, Germany

Software Developer, Hardware Developer

Fari Software GmbH

Circuit design
Development of embedded software
Connection to an electronic piano via USB and receiving and sending MIDI messages
Mirroring the keys of the electronic piano for left-handed users

Mar 2023 - Dec 2023

10 months

Stuttgart, Germany

Software Developer, Test Developer

Vector Informatik GmbH

Analysis of the existing code
Creation of a concept for converting the existing generator
Creating test units with vTESTstudio and CAPL at bus system level
Simulation of LIN control units with CANoe
Development of the new generator in C++ and C#
Development-accompanying tests

Nov 2022 - Feb 2023

4 months

Böblingen, Germany

Software Developer, Hardware Developer

Fari Software GmbH

Development of a prototype for a wireless color sensor
Circuit design
Creating the embedded software
Reading the sensors and sending the data via Bluetooth Low Energy (BLE)
Creating desktop software for communication with the module

Nov 2021 - Jun 2022

8 months

Stuttgart, Germany

Software Developer, DevOps Developer

Vector Informatik GmbH

Configuration of conan as package manager
Creating conan packages for tools and libraries
Integrating conan into CMake and Visual Studio projects
Converting Visual Studio projects from MSBuild to CMake
Creating CI/CD pipelines in GitHub Actions for conan packages and upload to Artifactory
Creating base images for CI/CD pipelines

Nov 2020 - Dec 2024

4 years 2 months

Stuttgart, Germany

Software Developer, Language Developer

Vector Informatik GmbH

Specification of the DSL
Architecture and implementation of the DSL with Xtext and Xtend
Creating an extension for VSCode via the Language Server Protocol
Generator for C#, C++ and C code from the DSL for control software
Generator for HTML documentation from the DSL
Creating a CI/CD pipeline for automated generation from the DSL
Live query of JIRA via REST for validation of the DSL against requirements
Extending the DSL data model with information from protobuf files

Oct 2020 - Mar 2024

3 years 6 months

Böblingen, Germany

Software Developer

Advantest Europe GmbH

Automatic generation of Python wrappers around existing C++ code
Embedding the Python interpreter using pybind11
Performance analysis and improvement by avoiding too many IPC calls
Uploading and running a Python script on the server
Connecting a Java API to the Python interpreter

May 2019 - Aug 2019

4 months

Stuttgart, Germany

Software Developer, DevOps Developer

Vector Informatik GmbH

Creating a tool with C# and WPF for test configuration for smart charging protocols
Creating an installer for the tool
Setting up an automated build and deployment pipeline
Simulating a charging station and the vehicle with CANoe

Oct 2018 - Feb 2019

5 months

Lahr, Germany

Software Developer

NELA Brüder Neumeister GmbH

Design, development, and verification of algorithms for visual analysis of test objects
Image processing and feature extraction in 2D and 3D images
Pattern recognition
Creating test programs to assess the quality of test specimens
Commissioning the test programs at the customer's site
Integrating OPC UA for communication with machine controllers

Apr 2018 - Dec 2021

3 years 9 months

Stuttgart, Germany

Software Developer, DevOps Developer

flexis AG

Creating and maintaining Python libraries for data analysis
Porting C++ code to Python
Migration from Python 2 to Python 3
Architecture and development of a data processing pipeline using PostgreSQL with microservices
Deployment and operation in a managed cloud environment
Integrating data sources via REST, MQTT, OPC UA, and ZeroMQ
Integrating data sources and sinks via SQL
Creating a Python library for communication with a proprietary relational database
Converting Visual Studio projects to CMake
Integrating vcpkg as a package manager

Jan 2018 - Sep 2018

9 months

Steinenbronn, Germany

Software Developer

TetraTec Instruments GmbH

Adopting the data models from an existing MSSQL database
Automatic generation of the API from the existing data model
Creating reports from the database using LaTeX

Sep 2017 - Feb 2018

6 months

Stuttgart, Germany

Software Developer, Test Developer

Vector Informatik GmbH

Analysis of customer requirements for a diagnostics-over-IP framework
Implementation of the framework with CAPL in vTESTstudio
Creating a panel for parameterizing the framework
Creating tests according to customer specifications
Simulation of control unit, gateway, and tester with CANoe

Aug 2017 - Aug 2018

1 year 1 month

Böblingen, Germany

Software Developer

Aquilius Research GmbH

Analysis of customer requirements and bug reports
Implementation of features and bug fixes
Automated unit tests
Analysis of crash dumps and memory leaks
Performance measurements and improvements

Aug 2017 - Jan 2018

6 months

Steinenbronn, Germany

Software Developer

TetraTec Instruments GmbH

Specification, design, implementation, and testing of control software for a compressed air test bench
Control of external hardware
Implementation of test sequences
Creating a UI with WinForms
Commissioning of the software at the test bench

Jul 2014 - Jul 2017

3 years 1 month

Stuttgart, Germany

Software Developer

Vector Informatik GmbH

Specification, design, implementation, and testing of software projects for vehicle simulation and testing as part of the CANoe, CANalyzer, TAE, and vTESTstudio products
Software development and architecture with C++ and C# on Windows
Migration from 32-bit to 64-bit and from Windows to Linux
Focus on vehicle diagnostics and testing at bus system level
Simulation and testing of control units at bus system level
Analysis of crash dumps and memory leaks
Evaluation and introduction of JIRA as a company-wide issue tracking system
Development of an add-on for JIRA to support company-specific processes

Apr 2006 - Jun 2014

8 years 3 months

Böblingen, Germany

Software Developer

Advantest Europe GmbH

Responsibility for the central sequence control of the IC tester software, the customer-relevant APIs, and their data generation
Software development and architecture with C++ on Linux
Model-driven development and documentation with UML
Development of a (D)COM-like component framework
Technical lead of a team with up to 7 engineers
Evaluation and introduction of new tools and technologies
Professional guidance and coaching of engineers
Project planning and execution, including creating schedules
Close collaboration with R&D teams in China and the USA
Design and implementation of an executable and debuggable domain-specific language
Crash analysis and performance optimization
Static code analysis

Industry Experience

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

Experienced in Manufacturing, Automotive, and Information Technology.

Manufacturing

Automotive

Information Technology

Business Area Experience

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

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

Information Technology

Product Development

Project Management

Quality Assurance

Operations

Research and Development

Summary

Matthias Spiller is a senior software developer with over 19 years of experience in the development, maintenance, and modernization of technical software systems — especially in embedded, automotive, and industrial environments. He helps companies get unstable or outdated systems back under control: through solid debugging, targeted performance optimization, modernization of legacy code, and building test and CI/CD infrastructures.

His technical strength lies in analyzing complex C++, C#, and Python codebases, often on Linux or Windows with CAN, LIN, Ethernet, or other bus systems. In addition to implementing new features, he also takes on cross-functional tasks: architecture consulting, interface design, DSL development (Xtext), or refactoring work when there is technical debt.

Typical areas of use are embedded devices, controllers, diagnostic tools, data pipelines, or simulation environments — also where documentation is missing or systems have passed through many hands. He works through his GmbH, prefers remote work, and is also available on site for project phases.

Skills

Programming Languages And Databases

Postgresql
Mysql
Mssql
Sqlite
C++
C
Python
C#
.Net
Cli
Redis
Sqlalchemy
Entity Framework
Capl
Xtend
Java
Vb.Net
Bash
Batch
Groovy

Products, Standards, Libraries

Xtext
Git
Github
Gitlab
Bitbucket
Canoe
Canalyzer
Vteststudio
Vcdl
Cdd
Odx
Uds
Diagnostics
Can
Lin
Ethernet
Ipv4
Tcp
Udp
Wireshark
Mqtt
Opc Ua
Rest
Swagger
Postman
Csv
Json
Xml
Protobuf
Unit Testing
Roslyn
Dependency Injection
Valgrind
Vtune
Threadsanitizer
I2c
Spi
Jenkins
Github Actions
Bamboo
Devops
Opencv
Boost
Pandas
Numpy
Msbuild
Cmake
Wpf
Qt
Winforms
Mfc
Jira
Confluence
Conan
Vcpkg
Nuget
Maven
Gradle
Docker
Kubernetes
Openshift
Terraform
Azure

Languages

German

Native

English

Advanced

Education

Oct 2000 - Jun 2006

University of Freiburg

Diploma in Computer Science, focus: pattern recognition, image processing, computer vision; minor: physics · Computer Science · Freiburg im Breisgau, Germany

Aug 1991 - Jun 2000

Gymnasium Wendalinum

Abitur · Sankt Wendel, Germany

Certifications & licenses

AUTOSAR Workshop

Blockchain - Security without a Trust Center

CAN bus basics

Introduction to quantum computing

Quantum information and cryptography

Quantum Computing with Qiskit

ECU testing with CANoe and vTestStudio

Statistics

Experience

Total positions 20

Experience in Manufacturing 13 y

Avg length 1 y 5 m

Longest experience 8 y 2 m

Global Experience

Countries worked in 2 (Germany, United Kingdom)

Primary country Germany

Expertise

Recent roles Software Developer and Consultant, Software Analyst and Developer, Software Developer, Test Developer

Main industries Manufacturing, Automotive, Information Technology

Main business areas Information Technology, Product Development, Project Management

Qualifications

Highest degree Master

Certifications earned 7

Profile

Created

April 2025

Last Update

July 2026

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Frequently asked questions

Have questions? Find more information here.

Matthias is based in Böblingen, Germany and prefers 100% remote projects.

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

Matthias has at least 19 years of experience. During this time, Matthias has worked in at least 7 different roles and for 9 different companies. The average length of individual experience is 1 year. Note that Matthias may not have shared all experience and actually has more experience.

Based on recent experience, Matthias would be well-suited for roles such as: Software Developer and Consultant, Software Analyst and Developer, Software Developer, Test Developer.

Matthias's most recent position is Software Developer and Consultant at CLADE GmbH.

In recent years, Matthias has worked for CLADE GmbH, confidential, Vector Informatik GmbH, Fari Software GmbH, and Advantest Europe GmbH.

Matthias is most experienced in industries like Manufacturing, Automotive, and Information Technology.

Matthias is most experienced in business areas like Information Technology, Product Development, and Project Management. Matthias also has some experience in Quality Assurance, Operations, and Business Intelligence.

Matthias has recently worked in industries like Information Technology, Automotive, and Manufacturing.

Matthias has recently worked in business areas like Information Technology, Product Development, and Operations.

Matthias holds a Master in Computer Science from University of Freiburg.

Matthias has 7 certificates. Among them, these include: AUTOSAR Workshop, Blockchain - Security without a Trust Center, and CAN bus basics.

Matthias will be available full-time from October 2026.

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

To hire Matthias, click the Meet button on the profile to request a meeting and discuss your project needs.