Senior Microelectronics Engineer(m/f/d)

About us:
NET CHECK GmbH was founded in 1999 with the aim of improving the quality of communication networks. Since then, NET CHECK has developed into the leading partner of network operators and infrastructure providers of mobile and fixed networks of all technologies. Its core competencies include international network benchmarking (comparative measurements) as well as network planning and fault analysis. NET CHECK has one of Germany's largest crowdsourcing platforms, which generates over 144 million data points every day. Our commitment to quality and security has earned us the trust of scientific and government institutions.
NET CHECK is headquartered in Berlin and is part of the NC GROUP, an owner-managed group of companies with a total of over 180 employees at five locations in Germany and one in Belgrade, Serbia. 

Job Summary: We are seeking a Senior Microelectronics Engineer to join our Hardware Development team. team. The successful candidate will play a key role in the design, development and validation of electronics and embedded solutions for telecommunication measurement systems. This position involves leading the design of microelectronic circuits, developing embedded firmware and ensuring the integration across hardware and software components.

Responsibilities:
• Design and develop microelectronic circuits for telecom measurement equipment.
• Develop and optimize embedded firmware for STM32 microcontrollers using C/C++, with expertise in UART, Ethernet, and USB communication interfaces.
• Perform schematic design, prototyping and laboratory testing to ensure product reliability and compliance with telecom industry standards.
• Lead design reviews and drive design improvements across hardware and firmware domains.
• Collaborate with cross-functional teams (hardware, software and mechanical) to integrate hardware designs into system architecture.
• Research and evaluate latest microelectronics and embedded technologies relevant to telecom measurement systems.
• Prepare comprehensive technical documentation, including design specifications, verification procedures and detailed engineering reports.
• Provide technical guidance to junior engineers while contributing to continuous improvement initiative within the hardware R&D team.

Your profile:
• Bachelor’s or Master’s degree in Electrical Engineering, Microelectronics, or a related field.
• 5+ years of experience in microelectronics and embedded system design.
• Proven expertise in embedded firmware development using C/C++ on STM32 or similar ARM-based microcontrollers.
• Hands-on experience with communication interfaces such as UART, Ethernet and USB.
• Solid knowledge in circuit design, PCB layout design and hardware debugging.
• Proficiency with electronic design in CAD tools (e.g. KiCAD, Eagle).
• Familiarity with RF systems, telecom interfaces (e.g., LTE, 5G, Wi-Fi), and signal processing is a strong plus.
• Experience in laboratory testing, prototyping and performance optimization of embedded systems.
• Excellent communication skills in English (written and spoken), German is a plus.

We Offer:
• Employment Type: Full-Time, indefinite term.
• A dynamic team characterized by creativity, collaboration, and technical excellence, creating an innovative workplace.
• Flexible working hours.
• 28 vacation days.
• Health & Sports Subsidy: Sports membership subsidy.
• Public Transportation Subsidy: Monthly subsidy for a Germany-wide ticket.
• Bicycle leasing via JobRad.
• Regular Team Events.