Principal RF Payload Lead Engineer

The world still has coverage blind spots. You could help eliminate them at Skylo. Skylo has pioneered a standards-based approach to satellite connectivity. We connect smartphones and IoT devices directly to satellites. No special hardware, no entirely new networks. Just billions of existing devices, suddenly reachable anywhere on Earth. We're not building toward this future. We're already in it. Our direct-to-device service is live on millions of activated devices across five continents, covering more than 72 million square kilometers, in partnership with leading satellite operators, mobile network operators, Tier-1 chipset makers, and OEMs worldwide. And we're just getting started. At the heart of it all is Skylo's commercial NTN vRAN: a 3GPP standards-based, cloud-native platform that seamlessly bridges terrestrial and satellite networks. It's the infrastructure that makes true anywhere, anytime connectivity possible. When you join Skylo, you'll work at the intersection of three markets reshaping how the world stays connected: mass-market consumer devices, automotive, and industrial IoT. Enabling people outdoors and critical workflows in the world's most remote places. This is a rare chance to work on technology that matters, at a company that's already proving it works About Skylo Skylo is a global Non-Terrestrial Network service provider based in Mountain View, CA, offering a service that allows smartphone and IoT cellular devices to connect directly over existing satellites. Skylo’s direct-to-device service is now live on millions of activated devices across five continents, with more than 60 million square kilometers of coverage, in partnership with multiple satellite operators, mobile network operators (MNOs), Tier-1 chipset makers, and OEMs. Devices connected over satellite are managed and served by Skylo's commercial NTN vRAN, featuring a 3GPP standards-based cloud-native base station and core. Skylo provides an anywhere, anytime connectivity solution that seamlessly roams between terrestrial and satellite networks. Our focus is on enabling connected services for people outdoors and connected workflows across three main verticals: mass-market consumer devices, automotive, and industrial IoT. This role can be performed remotely with a preference for candidates located in Mountain View, CA, where we are onsite three days per week. Summary Of How You Will Impact Skylo Skylo is hiring a Principal RF Payload Lead Engineer, who will be responsible for the end-to-end architecture, design, development, and on-orbit performance of advanced RF communications payloads enabling direct-to-device (D2D) connectivity from LEO spacecraft. The Principal RF Payload Lead owns the complete technical solution—from requirements definition and system architecture through hardware delivery, integration, testing, and mission operations support—of a space-qualified phased-array payload integrated with cellular networks and deployed at constellation scale. Remote U.S How You Will Contribute Define and own the RF payload architecture for direct-to-device services on LEO spacecraft, including phased-array antennas, RF front ends, frequency planning, and waveform selection aligned with cellular standards. Lead the design, analysis, and optimization of phased-array antennas (e.g., electronically steered arrays) for LEO missions, including beam forming strategies, scan performance, EIRP/G/T, ground coverage optimization, and handover considerations. Own end-to-end RF and communications link design for LEO space-to-ground cellular connectivity, including link budgets, modulation and coding schemes, Doppler impacts, interference analysis, and regulatory considerations. Define and manage RF payload interfaces with the spacecraft bus, including power, thermal, structural, EMI/EMC, data interfaces, and command and telemetry. Lead payload-level integration and test, including functional testing, RF performance verification, over-the-air testing of phased arrays, and environmental qualification for launch and the LEO space environment. Collaborate closely with cellular RAN and core network teams to ensure compatibility with 3GPP and related standards, including protocol behavior over LEO satellite links and integration with terrestrial networks. Develop and maintain requirements, specifications, and interface control documents (ICDs) for RF payload subsystems and suppliers; lead technical trade studies and formal design reviews (SRR, PDR, CDR). Provide technical leadership to multidisciplinary engineering teams (RF, antennas, digital, baseband, and software) and manage external vendors delivering RF and phased-array hardware. Support mission operations and constellation deployment, including payload checkout, on-orbit commissioning, performance monitoring, and troubleshooting of RF and communications anomalies. What We Look For Bachelor’s or Master’s degree in Electrical Engineering, Aerospace Engineering, or a related field with emphasis on RF, communications, or electromagnetics. 8–10+ years of experience in RF and communications systems engineering, including development of LEO satellite communications payloads or space-based RF systems. Demonstrated experience designing and delivering phased-array or electronically steered antenna systems, including architecture, modeling, beamforming, calibration, and test. Hands-on experience across the full RF payload lifecycle: requirements definition, design, hardware bring-up, integration, environmental testing, and flight delivery. Strong background in analog and digital RF design, including LNAs, PAs, frequency conversion, filtering, and end-to-end link analysis for high-performance communication systems. Proficiency with RF simulation and analysis tools (system-level and EM solvers) and laboratory RF test equipment (VNAs, spectrum analyzers, signal generators). Deep knowledge of cellular communications systems (e.g., 4G LTE, 5G NR, or similar), including waveforms, multiple-access schemes, channelization, and physical-layer parameters. Experience applying or adapting cellular standards to non-terrestrial networks (NTN) or LEO satellite-based connectivity, including latency, Doppler, and mobility impacts. Familiarity with RAN and core network concepts, device requirements, and end-to-end system behavior for direct-to-device satellite services. Every role at Skylo uses AI tools daily to amplify output. We expect active habits using AI tools and a track record of folding new ones into your workflow quickly What Would Set You Apart Prior experience on direct-to-device LEO satellite programs or 3GPP NTN-based systems. Proven track record leading complex technical teams delivering RF payload or communications hardware for on-orbit LEO missions. Strong understanding of space systems engineering practices applicable to LEO programs, including configuration management, risk management, and verification and validation of flight hardware. Active security clearance or eligibility to obtain one, as required by program needs. What We Offer With employees working across three continents, Skylo is proud to be an equal opportunity employer dedicated to building an inclusive and diverse workforce. Our worldwide and inclusive culture encourages a flexible approach to work, and we also offer an attractive range benefits such as: Competitive compensation packages including a stock option based equity program Comprehensive benefits including medical, dental, vision, retirement plan Monthly allowances for wellness and education reimbursement A generous time off policy, holidays, and the opportunity to temporarily work abroad Once in a lifetime opportunity to be a part of developing and running world’s first commercial, live direct-to-device satellite network and service Access to world-class team and talent across tech domains: software, hardware, chipsets, telecom, satellite and network virtualization Open, transparent, inclusive culture that blends the Silicon Valley, Nordic and South Asia characteristics Additional information The compensation range for this position is: $255,000 - $270,000. This range reflects the low and high end of the range Skylo reasonably and generally expects to pay the hired candidate in this role. EEO Statement Skylo is an equal-opportunity employer and we celebrate diversity. We do not discriminate on the basis of race, religion, color, ancestry, national origin, caste, sex, sexual orientation, parent or caregiver status, political affiliation, gender, gender identity or expression, age, disability, medical condition, pregnancy, genetic makeup, marital status, or military service consistent with applicable federal, state, and local laws. We are also committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. Please let us know if you need assistance or accommodation due to a disability.