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1–2 jobs· newest first

RF Systems EngineerNew
Loft Orbital Solutions · San Francisco, US+2 more
Cellular Performance Engineer
Apple · Sunnyvale, US
On-site · Full-time · Senior

+10K new in the last hour

RF Systems Engineer

Loft Orbital Solutions · Posted Nov 9, 2026

San Francisco, California, United States +2 more
2+ years

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Design, develop, and integrate RF systems for satellite connectivity and payload applications.

Locations (3)

San Francisco, California, United States
Golden, Colorado, United States
Toulouse, Occitanie, France

Responsibilities

Contribute to the design and development of RF systems for satellite connectivity and payload applications
Perform RF link budget analysis and evaluate subsystem performance across S-band, X-band, and inter-satellite link applications
Develop and optimize signal processing algorithms for RF payloads using MATLAB and related simulation tools
Support RF payload development across the signal chain, from antennas and RF frontends to ADCs and SDR systems
Collaborate with FPGA, embedded software, and systems teams to translate RF requirements into implementable solutions

Requirements

Nice to have: Software-Defined Radio (SDR) architectures
Nice to have: FPGA-based signal processing
Nice to have: channelizers
Nice to have: analog-to-digital converters (ADC)
Nice to have: digital-to-analog converters (DAC)

Skills

RF systems engineering RF link budget analysis signal processing algorithms MATLAB RF hardware test equipment subsystem validation RF frontends ADCs SDRs antenna systems RF geolocation RF performance analysis FPGA embedded software systems integration

Benefits

Equity
Up to 35 days of Paid Time Off
Health and life insurance
Lunch Vouchers
Cross-office travel opportunities

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Cellular Performance Engineer

Apple · Posted Nov 6, 2026

Sunnyvale, California, United States
On-site
Full-time · Senior

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Apple is seeking an engineer to lead and drive characterization of wireless software performance in labs and beyond, focusing on cellular systems, RF frontends, and software.

Responsibilities

Lead and drive characterization of wireless software performance in labs and beyond
Develop expertise in cellular systems, RF frontends, hardware, and software
Benchmark power and performance for Apple products
Act as a liaison between technology and product engineering teams
Debug and analyze issues across all (L1/L2/L3/Application) layers of the protocol stack

Requirements

Nice to have: multidisciplinary collaboration
Nice to have: problem-solving

Skills

laboratory environment testing benchmarking data 3GPP standards 5G NR LTE TCP/IP L1/L2/L3/Application protocol debugging

cellular call boxes

channel emulators

Python scripting

See full job description