As a Senior Communications Systems Engineer, you will be a critical member of the Autonomous Flight Systems and Simulations Team building highly accurate models of the spacecraft and space environments. You will enjoy large complex problems with multi-agent contributions to determine specific and probabilistic results. Your background will include either a first principles understanding of spacecraft guidance navigation and control mechanisms and forces, or radio frequency engineering and modeling. Key Responsibilities System Modeling & RF Analysis • Lead comprehensive link budget analyses, RF line-up modeling, and payload trade-offs across RF and IF configurations for LEO satellite payloads. • Model channel propagation, satellite antenna patterns, RF impairments, co-existence, and self-interference mitigation strategies. • Analyze end-to-end network performance, optimizing system efficiency, capacity, latency, and overall network KPIs under dynamic operational conditions. Cross-Functional Integration & Architecture • Partner across multidisciplinary engineering teams-including PHY/MAC algorithms, RF design, digital beamforming, modem, firmware, and mechanical engineering-to ensure end-to-end system integration. • Deep-dive into component- and subsystem-level designs to establish performance targets, evaluate test results, and resolve test failures. • Interface between wireless communications protocols and application endpoints to ensure seamless system and network-level operations. Validation, Quality & Execution • Define test plans, review hardware/software designs, and drive root-cause analysis for system-level issues to ensure carrier-grade product quality. • Document technical specifications, expectations, and architecture updates for both internal engineering teams and external partners. • Communicate project status, technical risks, and trade-off decisions clearly across development teams and management. Basic Qualifications • Education: Master's or PhD in Telecommunications, Electrical Engineering, or a related field. • Experience: 5+ years of experience in wireless systems engineering, focusing on RF/PHY, signal processing, and RAN architecture. • Standards & Protocols: Strong knowledge of 3GPP cellular standards (LTE, 5G NR, NB-IoT) and Non-Terrestrial Network (NTN) specifications (Release 17/18+). • Technical Mastery: Deep understanding of OFDM, MIMO systems, beamforming, and wireless communication theory across both baseband and RF domains. • Simulation & Tooling: Advanced proficiency in numerical modeling and simulation using MATLAB, C/C++, or Python. Preferred Qualifications • Satellite Systems: Proven experience with LEO satellite constellation link budgets, payload architecture, and satellite channel modeling. • Protocol Stack Familiarity: Solid background in higher-layer RAN protocols, including RRC, RLC, PDCP, and NAS. $150,000 - $200,000 a year This is a full time, exempt position, based out of our Santa Clara, CA location. The total compensation packaged will be determined by various factors such as your relevant job-related knowledge, skills, and experience. We are redefining how satellites are designed, manufactured and used-so we're looking for candidates with passion, deep knowledge and direct experience on LEO satellite component development, design and in-orbit activities. If that's your experience - then we'll be immediately wow-ed. E-Space is not currently able to provide employment sponsorship for candidates who do not hold work authorization for the location of this role.