Senior Systems Engineer

Title: Senior Systems Engineer Belong. Connect. Grow. with KBR KBRu2019s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the countryu2019s most critical role u2013 protecting our national security. Why Join Us? + Innovative Projects: KBRu2019s work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions. + Collaborative Environment: Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace. + Impactful Work: Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense. Job Description: The Senior Systems Engineer will support the architecture, analysis, integration, and technical oversight of advanced SATCOM and tactical communications systems. The role requires strong technical depth in RF engineering, digital communications, and modem development, with emphasis on physical layer performance and waveform implementation. The engineer will work across RF, IF, baseband, and networking layers to evaluate and develop modem and terminal architectures for military and commercial satellite communications systems. Responsibilities include analysis of modulation and coding performance, multiple access techniques, waveform optimization, and integration of SoC/FPGA-based communications subsystems. This position is hands-on and technical. The ideal candidate has direct experience developing, analyzing, or implementing modem or radio subsystems u2014 not solely supporting requirements documentation. u2022 Analyze and define modem and RF subsystem architectures for SATCOM or tactical radio systems u2022 Evaluate modulation and coding schemes (QPSK, 8PSK, APSK variants, LDPC, Turbo, etc.) under operational link conditions u2022 Assess and support implementation of multiple access techniques including FDMA, TDMA, DSSS, CDMA u2022 Develop and review link budgets, spectral efficiency analysis, and interference mitigation strategies u2022 Support System-on-Chip (SoC) or FPGA-based modem implementations and hardware/software partitioning decisions u2022 Define system and interface requirements across RF, IF, baseband, and Layer 2 interfaces u2022 Support integration and test of modem and terminal subsystems in laboratory and field environments u2022 Identify technical risks and performance trades across waveform, RF, and network layers. Required Qualifications: u2022 BS in Electrical Engineering, Physics, Applied Mathematics, or related field u2022 8+ years of progressively responsible experience in communications system development u2022 Demonstrated hands-on experience supporting modem, waveform, or RF subsystem design or integration u2022 Experience supporting integration and system-level testing u2022 Experience working in DoD or defense communications programs u2022 Strong foundation in RF engineering principles including non-linear effects, phase noise, filtering, frequency planning, and interference analysis u2022 Deep understanding of digital communications theory including modulation, coding, synchronization, and detection u2022 Experience evaluating or implementing ModCod strategies and adaptive coding and modulation u2022 Experience with FDMA, TDMA, DSSS, CDMA or related multiple access schemes u2022 Experience performing link budget analysis and system performance modeling u2022 Experience with FPGA or SoC-based modem architectures u2022 Experience with modeling/simulation tools such as MATLAB or equivalent u2022 Ability to translate waveform and RF performance analysis into actionable system requirements u2022 Active DoD SECRET clearance. Preferred Qualifications: u2022 MS in Electrical Engineering (Communications, RF, or Signal Processing concentration preferred) u2022 Experience with MILSATCOM (WGS, AEHF, MUOS) or Commercial SATCOM systems u2022 Experience with protected waveforms and secure modem architectures u2022 Experience reviewing or contributing to DSP implementations in C/C++ or HDL u2022 Active DoD Top Secret clearance Basic Compensation: $130-143k The offered rate will be based on the selected candidateu2019s knowledge, skills, abilities and/or experience and in consideration of internal parity. Work Environment: + Location: San Diego, CA + Travel Requirements: Approximately 20% travel required + Working Hours: Standard 40 hours per week Additional Compensation: KBR may offer bonuses, commissions, or other forms of compensation to certain job titles or levels, per internal policy or contractual designation. Additional compensation may be in the form of a sign on bonus, relocation benefits, short-term incentives, long-term incentives, or discretionary payments for exceptional performance. KBR Benefits KBR offers a selection of competitive lifestyle benefits which could include 401K plan with company match, medical, dental, vision, life insurance, AD&D, flexible spending account, disability, paid time off, or flexible work schedule. We support career advancement through professional training and development. Ready to Make a Difference? If youu2019re excited about making a significant impact in the field of space defense and working on projects that matter, we encourage you to apply and join our team at KBR. Let's shape the future together. Belong, Connect and Grow at KBRAt KBR, we are passionate about our people and our Zero Harm culture. These inform all that we do and are at the heart of our commitment to, and ongoing journey toward being a People First company. That commitment is central to our team of teamu2019s philosophy and fosters an environment where everyone can Belong, Connect and Grow. We Deliver u2013 Together. KBR is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, disability, sex, sexual orientation, gender identity or expression, age, national origin, veteran status, genetic information, union status and/or beliefs, or any other characteristic protected by federal, state, or local law.

Created: 2026-02-23