Radio Frequency Signal Engineer Job at Spire in Boulder

Overview

As the RF Signal Engineer in the Advanced Signal Processing Group, you will be at the forefront of developing and implementing cutting‑edge signal processing and geolocation algorithms. You’ll work directly with data from Spire’s global fleet of Low Earth Orbit satellites, enhancing our TDOA / FDOA-based RF geolocation pipeline and developing new RF intelligence applications. Your contributions will directly impact our commercial and government customers by providing them with invaluable insights and strengthening our position as a leader in space‑based data analytics. This role is a unique opportunity to be one of the foundational members of a growing team and shape the future of our RF intelligence capabilities.

Required Qualifications

RF Digital Signal Processing (DSP) : Apply deep theoretical and practical expertise in DSP for radio frequency applications, including modulation / demodulation, filtering, and spectral analysis.

C++ Programming : Develop and maintain high-performance, production‑grade algorithms and software pipelines using modern C++.

Geolocation Algorithms (TDOA / FDOA) : Strong theoretical understanding and / or hands‑on experience with Time Difference of Arrival (TDOA) and Frequency Difference of Arrival (FDOA) geolocation techniques.

Problem‑Solving & Research : Demonstrable ability to tackle complex, open‑ended problems by moving from theoretical concepts and whitepapers to practical, implemented solutions.

Additional Qualifications

NVIDIA CUDA : Experience in developing and optimizing algorithms using NVIDIA’s CUDA platform for GPU acceleration.

Python Programming : Familiarity with Python for data analysis, rapid prototyping, and building supporting infrastructure tools.

Experience with Satellite Signals : Prior experience working with RF signals collected from Low Earth Orbit (LEO) satellites or other aerospace platforms provides valuable context for our mission.

Machine Learning (AI) : Knowledge of machine learning models and frameworks (e.g., PyTorch, TensorFlow) for emerging applications like signal classification or voice extraction / transcription.

Remote Work

Spire operates a hybrid work model, and this position will require you to work a minimum of three days per week in the office.

Access to Export‑Controlled Software

Access to US export‑controlled software and / or technology may be required for this role. If needed, Spire will arrange the necessary licenses—this is not something candidates need to have before applying.

Compensation

The anticipated base salary range for this position is listed below. Final base salary for this role will be based on location, skills, experience and qualifications. In addition to base compensation, this role may be eligible for annual equity awards and our employee benefits program, including vacation, sick, and personal time off; optional medical, dental, vision, life, and disability coverage; a 401(K) plan; health and wellness reimbursement program; and participation in Spire’s Employee Stock Purchase Plan.

Salary Range : $90,000 — $130,000 USD

Global Perks

Name Your Satellite Program (NYSP)

Launch Attendance

Generous Time Off Policy

Education Assistance Program

Employee Assistance Program (EAP)

Employee Stock Purchase Program (ESPP)

Family Leave

Fitness Reimbursement

Employee Referral Program

Healthy snacks & beverages in every office

About Spire

We improve life on Earth with data from space.

Spire Global is a space‑to‑cloud analytics company that owns and operates the largest multi‑purpose constellation of satellites. Its proprietary data and algorithms provide the most advanced maritime, aviation, and weather tracking in the world. In addition to its constellation, Spire’s data infrastructure includes a global ground station network and 24 / 7 operations that provide real‑time global coverage of every point on Earth.

Spire is Global and our success draws upon the diverse viewpoints, skills and experiences of our employees. We are proud to be an equal opportunity employer and are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, marital status, disability, gender identity or veteran status.

To help maintain a safe and secure workplace for Spire employees, all candidates who receive a conditional offer will be required to complete a background check. This may include criminal history and employment verification.

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