- Developed firmware for the nRF52 family using Zephyr RTOS, focusing on efficient and reliable embedded solutions.- Implemented Zigbee firmware using the ZBOSS stack and NRF Connect SDK for the nRF52 series, including redefining development processes for Zigbee applications.- Designed and implemented a Zephyr Logger over Zigbee, enhancing system monitoring capabilities.- Developed BLE (Bluetooth Low Energy) firmware, including both standard and custom services and characteristics, with successful integration into Android and iOS mobile applications.- Implemented Firmware Over-The-Air (FOTA) updates over BLE and Zigbee, covering both application images and second-stage bootloaders (MCUboot).- Debugged and resolved issues within the Zigbee stack (ZBOSS + NCS), ensuring stable and reliable firmware performance.- Gained expertise in the architecture of NRF Connect SDK (NCS) and Zephyr SDK, with a focus on avoiding unnecessary reinvention of existing solutions.- Acquired a deep understanding of the nRF Partition Manager and multi-image build processes.- Mastered the use of West CLI and manifest files for efficient project management.- Focused on designing firmware architectures that are robust, easily maintainable, and extensible.- Learned how to Dockerize the development environment to simplify onboarding for new team members and ensure consistent environments across multiple platforms.- Implemented CI/CD pipelines using custom Docker images, improving maintenance efficiency and reducing hosting billable time.- Reviewed PCB layouts of IoT devices

- Developed and optimized embedded C code for the nRF52 series of Nordic Semiconductor (1-Wire, proprietary wireless protocol, drivers, HAL)- Refactored existing code to improve efficiency, readability, and maintainability.- Researched and implemented wireless communication technologies, including analyzing the physical phenomena of radio waves.- Worked within the Agile Scrum framework to manage project tasks, collaborate with team members, and ensure timely delivery of project milestones.- Acquired and applied knowledge of DALI system principles, both software and hardware, for effective integration and development.- Learned and utilized Software Defined Radio (SDR) devices to analyze and decode radio transmissions, including assessing protocol security.- Programmed firmware using Zephyr RTOS on the nRF52 family.- Acquired a foundational understanding of the NRF Connect SDK and the Zephyr project SDK architecture.- Familiarized with the Kconfig language and its application in complex systems development.

- Developed embedded C code for the nRF52 family of Nordic Semiconductor devices (HAL)- Conducted research on broadband 2.4 GHz and Sub-GHz radio communication protocols to support project development and innovation.- Debugged and refined source code for tested communication protocols, identifying and resolving issues to enhance performance.- Created Python scripts to automate radio testing processes, improving efficiency and accuracy in protocol evaluation.- Delivered training sessions on wireless communication protocols, sharing knowledge and expertise with team members.- Managed and maintained a mesh network, including logging and analyzing data using the ELK (Elasticsearch, Logstash, Kibana) stack.

- Assembled and commissioned various electronic devices, ensuring proper functionality and quality.- Assembled, configured, and tested electronic controllers, verifying their performance against design specifications.- Built and integrated electrical switchgears for railway projects, adhering to industry standards and project requirements.- Manually tested the firmware on designed controllers, verifying that the devices behaved as intended according to the written firmware, without involvement in the programming process.- Performed THT (Through-Hole Technology) and SMD (Surface-Mount Device) soldering with precision, maintaining high standards of workmanship.- Diagnosed and repaired malfunctioning electronic devices by referring to technical documentation and schematics.

- Created detailed layouts in AutoCAD 2D, for testing primary and emergency lighting systems purposes.- Conducted diagnostics and troubleshooting of emergency lighting systems within the AMATECH framework.- Compiled detailed measurement reports from on-site tests, including insulation resistance, short circuit loop impedance, and illuminance levels, ensuring compliance with relevant standards and regulations.- Organized and prepared comprehensive as-built documentation, ensuring accurate and complete records of project outcomes

- Executed the installation of electrical systems in residential and commercial buildings.- Diagnosed and resolved electrical issues autonomously, ensuring safe and effective solutions.- Assembled and installed floor boxes with precision and adherence to safety standards.- Designed and implemented cable routing for Low Voltage (LV) systems and Twisted Pair cables.- Installed a variety of electrical components, including sockets, LED luminaires, light switches, motion sensors, and emergency lighting, all integrated with the DALI (Digital Addressable Lighting Interface) system.