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Gnss Navigation And Estimation Engineer

China Medical (International) Group LimitedBroomfield, CO

$130,000 - $155,000 / year

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Overview

Schedule
Full-time
Education
Engineering (PE)
Career level
Senior-level
Remote
On-site
Compensation
$130,000-$155,000/year
Benefits
Health Insurance
Paid Holidays
Paid Vacation

Job Description

Be one of the Bedo 100

Albedo is making Very Low Earth Orbit (VLEO) mainstream, building the infrastructure to usher every satellite mission set into this new orbital domain. We build buses, integrated satellites, and turnkey missions for customers to thrive in VLEO, between 250 km - 400 km, where proximity compounds performance and drag self-cleans debris.

As part of the first 100 employees at Albedo, you will have a big impact on Albedo's trajectory to proliferating VLEO - whether you're advancing hardware to increase satellite longevity, scaling production for large constellations, building next-gen flight and ground software to push performance, or enabling missions that matter for national security and our day-to-day life here on earth.

How We Operate: Albedo takes a first-principles approach - in space and in business. We move with speed, take calculated risks, and learn quickly. We use AI regularly to create leverage in every discipline across the company. We work in-person at our Broomfield CO HQ to maximize team and company productivity. We work hard and with urgency to compound our first-mover advantage.

Who We're Looking For: Builders who want to own outcomes, not tasks. Systems thinkers who balance precision with iteration while thinking about the big picture. Individuals who are energized by creating a category rather than competing in an existing one. You'll join a team that has already proven what others said wasn't feasible and is now scaling and upgrading our VLEO buses & payloads to serve mission sets across sensing, communications, and responsive operations.

If you can feel the excitement running through your veins, apply to be one of the Bedo 100.

What You'll Do:

  • Design and implement a high-accuracy, real-time onboard orbit estimator for a VLEO spacecraft using EKF or equivalent nonlinear filtering approaches; incorporate dynamic force modeling (gravity, drag, SRP), atmospheric drag state estimation, and reprocessing of raw GNSS measurements (code and carrier phase where applicable).
  • Develop and maintain the dynamic process models used in both real-time filtering and short-horizon prediction, including uncertainty propagation and covariance realism analysis suitable for maneuver planning and conjunction inputs.
  • Design and validate short-term orbit prediction methods (propagation, smoothing, covariance growth characterization) and quantify prediction error during high-drag and geomagnetic storm conditions.

Support low-thrust operations by:

  • Modeling finite-burn dynamics within the estimator,

  • Performing maneuver reconstruction and thrust parameter estimation,

  • Contributing to steering law and guidance design in close coordination with GNC.

  • Analyze orbit-attitude-drag coupling in VLEO and incorporate those effects into estimation and prediction models.

  • Generate and own robust, testable C/C++ flight software for real-time orbit determination, with strong attention to numerical stability, covariance integrity, and diagnosability.

  • Build and maintain ground-based validation and regression infrastructure, including closed-loop simulation, measurement replay, Monte Carlo campaigns, and hardware-in-the-loop testing with GNSS receivers and antenna systems.

  • Provide technical support for GNSS spaceflight hardware integration, including measurement modeling, command and telemetry integration, calibration analysis, and anomaly triage.

Your Ideal Skills and Experience:

  • Bachelor's or Master's degree in Aerospace, Electrical, Mechanical Engineering, Physics, or related field.
  • Strong C/C++ skills for flight software development, including numerical methods, floating-point stability, and deterministic behavior on embedded processors.
  • Proficiency in Python for analysis, simulation, and test automation.
  • Hands-on experience with nonlinear state estimation (EKF/UKF, smoothing, batch least-squares, or factor-graph methods) and strong numerical linear algebra fundamentals.
  • Familiarity with common GNSS formats and products (RINEX, SP3, IONEX, differential code bias, and related bias products) and correction ingestion pipelines
  • Deep understanding of GNSS measurement modeling (code and carrier phase), bias handling, and real-world sensor pathologies.
  • Solid knowledge of GEO/MEO/LEO/VLEO orbital perturbations (gravity harmonics, drag variability, SRP) and their representation in dynamic models.
  • Experience with covariance propagation, filter consistency testing (NEES/NIS), and operational health monitoring.
  • Experience integrating GNSS receivers, antennas, and optionally IMUs; familiarity with hardware-in-the-loop validation is strongly preferred.
  • Experience with control theory and guidance for low-thrust or drag-modulated flight is a plus.
  • Experience designing regression tests, Monte Carlo campaigns, and closed-loop simulation environments.
  • Comfort leveraging modern AI-assisted development tools with strong verification discipline and traceability.

Even if you feel like you don't meet all of the qualifications, we encourage you to apply! Research shows that while men apply to jobs where they meet an average of 60% of the criteria, women and other marginalized people tend to only apply when they meet 100% of the qualifications.

Salary Range:

$130,000 - $155,000 per year

Compensation and Benefits for Full-Time Roles:

  • Employee friendly equity compensation
  • 4% direct matching 401k
  • Health Insurance: 100% employee coverage & 75% dependent coverage
  • Parental leave and childcare coverage
  • Flexible vacation and sick time from day one
  • 12 company holidays
  • $100 monthly wellness benefit
  • Relocation package if not based in Denver

The final compensation package is subject to change if the candidate's experience and company need drive a different job level than originally slated for the position.

Albedo does not accept agency resumes. Please do not forward resumes to Albedo employees. Albedo is not responsible for any fees or overhead related to unsolicited resumes.

Additional Requirements: In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire. All persons hired will be required to be a U.S. citizen, a lawful permanent resident of the U.S., or protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.

Equal Opportunity Employer/Veterans/Disabled: Albedo is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law.

Relocation: Relocation support for this position is available

US CITIZENSHIP IS REQUIRED

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FAQs About Gnss Navigation And Estimation Engineer Jobs at China Medical (International) Group Limited

What is the work location for this position at China Medical (International) Group Limited?
This job at China Medical (International) Group Limited is located in Broomfield, CO, according to the details provided by the employer. Some roles may also include multiple work locations depending on the requirement.
What pay range can candidates expect for this role at China Medical (International) Group Limited?
Candidates can expect a pay range of $130,000 and $155,000 per year.
What employment applies to this position at China Medical (International) Group Limited?
China Medical (International) Group Limited lists this role as a Full-time position.
What experience level is required for this role at China Medical (International) Group Limited?
China Medical (International) Group Limited is looking for a candidate with "Senior-level" experience level.
What education level is required for this job?
The education requirement for this position is Engineering (PE). Candidates with relevant qualifications or equivalent experience may also be considered.
What benefits are offered by China Medical (International) Group Limited for this role?
China Medical (International) Group Limited offers following benefits: Health Insurance, Paid Holidays, Paid Vacation, Paid Sick Leave, Parental and Family Leave, Flexible/Unlimited PTO, 401k Matching/Retirement Savings, and Health & Wellness Programs for this position. Actual benefits may vary depending on the employer's policies and employment terms.
What is the process to apply for this position at China Medical (International) Group Limited?
You can apply for this role at China Medical (International) Group Limited either through Sonara's automated application system, which helps you submit applications 10X faster with minimal effort, or by applying manually using the direct link on the job page.