Senior Wireless Systems Engineer, R&D Verified today

About Hubble Network

Hubble Network is building a global Bluetooth network for machine-to-machine connectivity. We offer the first modem-less, gateway-less direct-to-satellite network using off-the-shelf Bluetooth Low Energy chips, serving logistics, AgTech, and maritime applications.

The Role

As a Senior Wireless Systems Engineer on the R&D team, you will split your time between sharpening satellite location accuracy and exploring next-generation positioning architecture.

Satellite Location Accuracy (approximately 75%)

• Improve accuracy and reliability of location estimation algorithms for BLE-to-satellite links: timing recovery, Doppler/frequency estimation, multilateration, and error correction
• Characterize and model dominant error sources (satellite ephemeris, oscillator drift, propagation effects, multipath, receiver noise) and prioritize which to address first
• Build and refine link and geolocation models to validate improvements before hardware or flight software deployment
• Design experiments using simulation, emulation, and over-the-air testing to measure real-world positioning accuracy against theoretical bounds
• Work with flight software and ground infrastructure teams to translate algorithm improvements into deployed accuracy gains

Future Initiatives: Downlink Beacon for Time and Position (approximately 25%)

• Research and prototype algorithms for a satellite downlink beacon that terrestrial devices could use to independently estimate time and position
• Model link budgets, signal design trade-offs, and expected accuracy for downlink-based versus current uplink architecture
• Run early feasibility studies and go/no-go experiments to determine integration feasibility
• Document findings and present results in design reviews to inform roadmap decisions

What You Bring

• Bachelor's degree in Electrical Engineering, Computer Engineering, or related field; Master's or PhD highly preferred
• Deep grounding in communication theory and signal processing: channel estimation, equalization, timing/frequency recovery, coding/error correction
• Experience with geolocation/positioning algorithms (TDOA, FDOA, multilateration, or similar)
• Strong knowledge of wireless communications fundamentals: FSK, OFDM, MIMO, spread spectrum
• Familiarity with existing protocols (5G/LTE, 802.11 variants, Bluetooth/BLE) as reference points
• Proficiency in MATLAB and/or Python and/or C/C++ for modeling, simulation, and algorithm prototyping
• Hands-on experience with lab validation: RF test equipment (spectrum analyzer, signal generator, oscilloscope, logic analyzer), FPGA/SoC prototyping
• Ability to work independently across incremental optimization and open-ended exploratory research
• Strong written and verbal communication skills
• Comfort in fast-paced, early-stage environment with availability for extended hours around critical milestones

Strongly Desired

• 10 or more years of directly relevant experience, ideally including satellite or GNSS-adjacent positioning/timing work
• Experience with LEO satellite links, Doppler compensation, or extreme link-budget-constrained systems
• Background in time-of-arrival/frequency-of-arrival estimation or precision timing systems
• Experience with multi-radio coexistence and modem/microprocessor architecture
• Prior experience in an R&D or advanced-technology group

Compensation and Benefits

• Salary: $128,000-$286,000 per year, commensurate with experience
• Comprehensive health, dental, vision, and HSA options
• Unlimited PTO
• Commuter benefits (if working from HQ)
• Learning and development allowance
• Health and wellness stipend
• Sabbatical program

Final level placement and compensation determined through interview and assessment, considering relevant experience, qualifications, skills, and location.

Requirements

All applicants must be U.S. citizens or lawful permanent residents as defined by ITAR (22 CFR §120.15) due to space technology export regulations.