Swan Bitcoin is hiring a DSP / SDR Receiver Engineer - Navigation & Communications in Engineering — Remote.
About Us
Swan delivers the future of defense and industry through scalable autonomous products. Swan is backed by leading defense VCs including a16z's American Dynamism fund.
DSP / SDR Receiver Engineer - Navigation & Communications
We are looking for a DSP / SDR engineer to help design, implement, and test software-defined radio receivers for navigation and communications applications. The role is focused on signal-processing receiver design: acquisition, tracking, synchronization, Doppler estimation, timing recovery, and real-time processing of RF signals.
The ideal candidate has hands-on experience building receiver signal-processing chains for GNSS, satellite communications, radar, wireless PHY, spectrum monitoring, or related RF systems.
Responsibilities
- Design and implement SDR receiver algorithms for real-world RF signals.
- Develop acquisition, tracking, synchronization, and measurement-generation pipelines.
- Estimate Doppler, carrier phase, timing, delay, and signal quality metrics.
- Work with SDR platforms such as USRP/UHD, GNU Radio, RFSoC, or FPGA-based systems.
- Analyze collected RF data and debug receiver performance in lab and field environments.
- Evaluate waveform structure, modulation, channel behavior, and receiver implementation tradeoffs.
- Support navigation and communications experiments using GNSS, LEO satellite downlinks, or other opportunistic signals.
Desired Background
Strong candidates may come from one or more of the following areas:
- GNSS / PNT receiver design
- Satellite communications modem or PHY development
- Radar signal processing
- Electronic warfare, ELINT, SIGINT, or spectrum monitoring
- Wireless PHY / LTE / 5G baseband processing
- Real-time SDR or FPGA-based signal processing
Useful Skills
- SDR development with GNU Radio, USRP/UHD, RFSoC, or FPGA SDR platforms
- Real-time DSP implementation
- Signal acquisition and tracking loops
- PLL / FLL / DLL design
- Doppler estimation and tracking
- Carrier recovery and timing recovery
- Matched filtering and correlation-based detection
- Frame synchronization and preamble detection
- OFDM, TDMA, DVB-S2/DVB-S2X, or other modem PHY experience
- GNSS observables such as pseudorange, carrier phase, Doppler, clocks, and ephemerides
- Navigation filtering, EKFs, factor graphs, or INS/GNSS integration
- Python, C/C++, MATLAB, or similar signal-processing tools
Ideal Candidate
The strongest candidate combines practical SDR implementation experience with deep receiver signal-processing intuition. They should be comfortable working with imperfect real-world RF data, debugging acquisition/tracking behavior, and turning signal-processing algorithms into working receiver software.
Experience with GNSS, LEO satellite signals, satcom downlinks, radar, EW, SIGINT, or wireless PHY systems is especially relevant.
About Swan Bitcoin
Swan Bitcoin, founded in 2019 by Cory Klippsten, Yan Pritzker and Brady Swenson in Los Angeles, is a dedicated Bitcoin financial services company providing automated recurring buys, high-net-worth OTC trading, institutional custody and Bitcoin IRA products. Swan focuses exclusively on Bitcoin accumulation and self-custody education, operating with transparent fees, zero altcoin trading and audited partner custody. Headquartered in Los Angeles with a fully remote US workforce, Swan also produces extensive macroeconomic research, books and podcasts. Backed by prominent Bitcoin investors, the company prioritizes customer education, direct client advisory and building durable financial tools that help individuals and corporations hold Bitcoin safely long-term. On Hashtag Web3, Swan Bitcoin has 12 active roles listed — including Business Development Lead, Proposal Writer / Capture Manager, Forward Deployed Drone Technician in United States, Remote, San Francisco.