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Technical audit for scientific software.

• Complete platform upgrade from Expo 53 to Expo 54, considering project-critical breaking changes
• Version bump of react-native 0.79.5 to 0.81.5 including consolidation, updating, and reinstalling all project-related dependencies (JavaScript, native modules, build tools, TypeScript tooling)
• Identifying and fixing incompatible libraries as well as adjusting iOS and Android configurations (Gradle, Pods, build scripts)
• Enabling and integrating the React Native New Architecture (TurboModules & Fabric) including adjusting native interfaces, build configurations, and feature flags
• Cleaning up technical debt and harmonizing platform-specific implementations to ensure long-term maintainability
• Stabilizing the project through detailed debugging, regression analysis, and adjustments to the tooling chain (Metro, Babel, TypeScript)
• Conducting comprehensive test cycles (unit, E2E, device tests) and optimizing CI/CD pipelines for Bitrise and GitLab
• Ensuring stable releases for Android & iOS in conjunction with analytics, engagement, and monitoring systems

• Responsible and accountable for the coordinated management between internal R&D team and suppliers of the scanning stage including its interfaces in a metrology project

• Directed and managed the integration cases and plans prepared by the internal team based on business line functional requirements

• Supported product, engineering, design and suppliers in driving projects and tasks to completion on schedule and to spec

• Determined road map dates based on metrics and priorities from integration process to end transport cases of particular swap tools

• Analyzed operating costs and efficiency

• Discussed with customers and suppliers to gather requirements

• Successfully led the development of projects from conceptual to prototype

• Designed and implemented embedded firmware in C/C++ for ARM-based microcontrollers and SoCs (STM32, NXP, Infineon)
• Worked across bare-metal, FreeRTOS, and Embedded Linux environments, contributing to BSP-level functionality, driver bring-up, and system integration
• Built, configured, and validated Embedded Linux systems using Yocto, including image build, boot validation, and runtime debugging
• Developed and executed unit, integration, and system-level tests, including HIL and SIL test scenarios on real hardware and simulated environments
• Created Python and Bash scripts to automate build, test execution, simulation runs, and reporting within CI/CD pipelines (Jenkins, GitLab CI)
• Designed test cases from software and system-level requirements, covering normal operation, edge cases, and failure scenarios
• Performed low-level debugging using JTAG/GDB, analyzing boot issues, timing problems, interrupts, and peripheral behavior
• Developed and validated communication interfaces including UART, SPI, I2C, CAN using logs and external measurement tools
• Used simulation and virtual test environments to validate software behavior prior to hardware availability
• Read and interpreted hardware schematics to understand signal routing, pin multiplexing, and peripheral connections
• Supported PCB design and review activities using Altium tool, assisting with component selection, pin mapping, and bring-up readiness
• Collaborated with cross-functional hardware, firmware, and system teams to clarify requirements, document assumptions, and improve overall test coverage
• Developed web interfaces using HTML, CSS, and JavaScript (ES6) and basic REST API development with Node.js
• Experience testing web applications and building UI automation frameworks using Selenium WebDriver

• Firmware low-level driver development for an advanced water tap with bluetooth on an EFR32BG module from Silicon Labs with Simplicity Studio

• Third-side integration development (REST: Amazon, OpenAI, Etsy, Shopware, Prestashop, etc)

• Performance optimization (Refactoring, SQL analysis)

• LMS development and deployment (Moodle)

• Cloud deployment automation (Amazon, Azure, Gitlab CI/CD, Docker)

• Backend and Frontend development (Laravel, VueJs)

• Collaboration with partner-developers (national and international)

• Shirtigo GmbH

• GRELLARTIG Digital GmbH

• velpTEC edutainment GmbH

• Built a WebSocket progressive streaming pipeline replacing 15+ second blocking fetches with near real time updates.
• Deployed Nginx with HLS/RTMP for live and on-demand video: reliability up 35%, latency down 30%, concurrency up 45%, bandwidth down 20%.
• Added client-side caching with AWS S3 pre-signed URLs; image loads dropped from about 5,000 ms to under 20 ms, boosting page responsiveness.
• Optimized video frame annotation pipeline by introducing Python threading to parallelize S3 uploads, reducing processing time by ~40%.

• Develop and debug test automation scripts in Python and C# for medical software platforms.
• Support platform testing using HiL systems and Azure-based CI/CD pipelines.
• Create and maintain documentation parsing tools and factory test setup configurations.

• Update of embedded Linux kernel, UBoot and relevant packages to latest version on TI AM3358
• Focus on GPU (SGX driver)
• Adoption of kernel, bootloader and drivers to run seamlessly with user applications

• Added a safety shutdown in the MISCEO product firmware when a certain delivery limit (cap) was reached.

• Familiarized myself with the product and its firmware (C code and functionality).

• Identified the code parts needed for the change.

• Implemented the extension.

• Tested and documented (only in the source code).

• Target platform: embedded firmware without an operating system.

• Tools: Eclipse, C.

• Designed a platform based on IoT, Azure, Kubernetes, and Postgres for an existing application
• Migrated from "click-ops" and UI-defined CI/CD pipelines to infrastructure-as-code with Terraform, enabling complete redeployment of multiple environments
• Technologies: Terraform, OpenTofu, Azure, Azure DevOps, Kafka, IoT, Kubernetes, Grafana, Prometheus, GitOps, relational databases

• Cyber Security (IT, OT, Ethical Hacking & Pen Testing)
• Data Science (Machine Learning, Deep Learning, Data Engineer and Data Analytics)

• Added dimensionless pump maps for accurate and effective operating point calculation
• Integrated advanced thermodynamic models for realistic fluid behavior
• Tools: MATLAB, Simulink, Python

Rethinking employee benefits

As the person responsible for HR in your company, you face the challenge of offering attractive benefits to position your company appealingly for both current and prospective employees.

Company benefits can go beyond bike leasing, fruit baskets, and company pension schemes.

• Many employees have personal concerns, such as caregiving situations within the family (children, their own parents, or other relatives).
• They often don't know enough about what payments they can expect in retirement. This uncertainty causes a lot of stress for many people.
• They worry about how to relieve their relatives. Whether it's for a caregiving situation, securing decision-making power through legal documents (like a power of attorney, advance directive, and will), or dealing with issues like digital legacy (this sets out how digital data should be handled after death. In my view, this is a topic that is becoming ever more important.)
• Emotions often come into play in these situations, and because of poor preparation they usually don't get the space they need, which makes difficult scenarios even more complex. Good preparation can help relieve employees.
• Another very important topic for SMEs and large corporations is international specialists. Here I provide support primarily in sharing knowledge about social security contributions, the pension system, and planning for the financial future in Germany.

In efforts to balance family and career and to empower women in companies, I speak at firms on the following topics:

• How to manage your digital legacy
• Power of attorney, advance directive & organ donor card
• How to arrange your own funeral while you're still alive
• Getting started with retirement planning: How well prepared am I for retirement?
• Retirement planning for women
• Money Mindset / Empowerment

I offer the following formats:

• 45-60 minute talks + follow-up discussion
• Thematic workshops of 120-180 minutes
• Thematic training sessions (half-day or full-day)

As a company, you can choose from existing topics and tailor your employees' training individually to their needs.

Here's what my clients say: "Our employees feel financially empowered – we feel it throughout the entire team." – Sandra, HR Manager at a medium-sized company

With my training formats, your employees can clarify important and nagging questions and find the right solutions. This makes them much more focused and relaxed for their daily tasks in your company.