Senior RFID Systems Engineer

Radar•San Diego, CA

About The Position

RADAR is building the data infrastructure layer for the physical world, starting with retail. Our hardware-enabled SaaS platform uses proprietary overhead sensors, software, and AI-powered analytics to locate every product in a store, continuously, down to the fixture. RADAR is already deployed across 1,400+ stores with retailers including American Eagle Outfitters and Old Navy, processing tens of billions of real-world events every day, delivering 99%+ accuracy in complex, noisy environments - at fleet scale. RADAR is one of the best-funded companies in retail technology, backed by a recent Series B financing at a $1 billion valuation. Inventory accuracy is only the beginning. We believe RADAR can become foundational infrastructure for the physical economy, powering new AI-driven commerce experiences across retail and beyond. Join us if you want to work on a large, unsolved, technically challenging problem with an ambitious team building category-defining technology. We are currently seeking a Senior Systems Engineer to join our team and assist with efforts in modeling, simulating, and improving the performance of PHY and MAC systems. In this role, you will be responsible for identifying and addressing RF, Digital and Channel impairments, collaborating closely with engineers to validate and define performance requirements, and implementing physical layer algorithms. This position demands a strong proficiency in C++ and a deep understanding of wireless communication principles, enabling you to make critical decisions on performance versus implementation complexity. Your work will directly impact the development and optimization of advanced wireless technologies, requiring both innovative thinking and rigorous analysis.

Requirements

Bachelor's degree in wireless communications and signal processing.
5+ years of experience simulating end-to-end wireless systems under various RF conditions.
Familiarity with fixed-point design and implementation trade-offs.
Strong C++ programming skills.
Strong root-cause analysis skills.
Ability to collaborate with people of different working styles.
Driven, deadline and detail oriented.

Nice To Haves

Knowledge of RFID and sensor technologies and test procedures.
Master's or PhD in wireless communications and signal processing.

Responsibilities

Define, implement, and simulate physical layer algorithms.
Identify and model system impairments in C++, validate against lab measurements.
Simulate impact of impairments on PHY and MAC layer performance.
Collaborate with engineers to specify system requirements.
Analyze trade-offs between performance and implementation complexity.
Devise and implement test strategies that adequately assess all aspects of the wireless system.
Work with other engineers to troubleshoot and resolve issues.
Document algorithms for Software and RTL Designers.