Senior Embedded Engineer

4/2022 – 12/2024

• Designed and defined software architecture for embedded systems and mobile applications, focusing on scalability, modularity, and performance across IoT projects.

• Authored comprehensive technical documentation, including interface specifications, architecture diagrams, and integration guides, to support cross-functional teams throughout development and validation phase.

• Designed and developed secure, high-performance embedded firmware for IoT devices in the medical and environmental sectors, enabling seamless integration with Android and iOS applications for real-time configuration, monitoring, and over-the-air updates.

• Implemented a FIDO2 biometric security key on a Nordic chip (Zephyr OS), enabling passwordless WebAuthn authentication and biometric-secured Windows logon, aligning with modern security standards.

• Integrated a Java applet with biometric smart cards to enable secure Windows/Linux system logon, enhancing access control for enterprise environments.

• Built a C/C++ desktop tool to validate security keys in fingerprint sensors, reducing test time by 60% and eliminating manual verification costs.

• Developed Android/iOS applications showcasing NFC-based biometric smart card functionalities, empowering marketing teams with interactive demos that boosted client engagement and product adoption.

• Proficiently utilized Version Control Systems (GitHub and GitLab) for code storage,
project integration, and issue tracking

• Methodology: Agile/Scrum
• Key Technologies: C/C++, Java, Swift, python, Java Card, NFC, FIDO2, BLE
• Hardware: nRF53, STM32f4, Smart Card, fingerprint sensor.
• Tools: Android Studio, Eclipse, VS code, Xcode
• Environments: Windows, Android, Linux, iOS

Android Entwicklung, Embedded Entwicklung / hardwarenahe Entwicklung, iOS Entwicklung, Software Architecture

2/2020 – 3/2022

• Designed, developed, and maintained real-time embedded software using FreeRTOS and Zephyr OS for various IoT applications in the tracking and environmental sectors.

• Integrated advanced wireless communication protocols including WiFi, BLE, GSM, GPS, LTE Cat M1/NB2, and 5G, enabling robust connectivity for IoT devices.

• Defined and implemented software architecture for real-time IoT projects, ensuring modular design, efficient resource utilization, and smooth integration across embedded firmware.

• Successfully integrated 5G SA/NSA modules on Embedded Linux, supporting HD video streaming and high-throughput use cases.

• Collaborated with the hardware engineering team to review schematics, perform hardware bring-up, and debug low-level hardware/software integration issues.

•Utilized Git and GitLab for version control, continuous integration, and issue tracking.

• Methodology: Agile/Scrum
• Languages: C/C++, Java, Python
• Key Technologies: C/C++,Java, Python, FreeRTOS, Zephyr, Embedded Linux, 5G, BLE, LTE Cat-M1/NB2, GPS, Git
• Tools: Android Studio, Eclipse, VScode, GitLab, Logic Analyzers
• Environments: Windows, Android, Linux, Embedded Linux

Embedded Linux, Hardware-Design, Softwaretester, Software Architecture, Code-Review, Embedded Entwicklung / hardwarenahe Entwicklung, Embedded Systems, Informatik

5/2018 – 12/2019

• Designed and implemented Firmware Over-The-Air (FOTA) update mechanisms via MQTT/HTTP and BLE 4.2 for medical IoT devices.

• Integrated and customized Secure Boot and Secure Firmware Update (SBSFU) mechanisms, enabling encrypted and authenticated firmware delivery over BLE and MQTT/HTTP.

• Integrated AWS IoT (MQTTS) and Amazon S3 (HTTPS) with embedded systems for secure cloud communication and storage.

• Developed secure BLE communication, including support for BLE 5.0, for real-time data transfer in medical device applications.

• Designed and developed Android applications communicating with IoT devices via BLE to perform wireless firmware upgrades, device configuration, and real-time performance diagnostics.

• Authored comprehensive technical documentation for embedded drivers, applications, and update processes.

• Used SVN for version control in a collaborative Agile/Scrum development environment.

• Methodology: Agile/Scrum
• Key Technologies: C/C++, Java, SQL, BLE 4.2/5.0, MQTT/MQTTS, SBSFU, AWS IoT, FOTA
• Hardware: nRF51/52, STM32F4/L4
• Tools: Keil, Android studio, WICED studio, Eclipse, IAR
• Environments: Windows, Android

Softwaredokumentation, Softwareentwickler Embedded Systems, Embedded Software