GNC Embedded Engineer - Orange County, CA

About Tiberius Aerospace

Tiberius Aerospace is a cutting-edge Aerospace and Defense company committed to delivering innovative, secure, and compliant solutions for our customers. We specialize in mission-critical technology services for government and private sector customers, ensuring excellence in aerospace systems design, performance, and compliance. To serve our nations with Strength, Honor, and Purpose - forging the systems that defend freedom and shape the future of defense.
About Tiberius Aerospace

Tiberius Aerospace is a cutting-edge Aerospace and Defense company committed to delivering innovative, secure, and compliant solutions for our customers. We specialize in mission-critical technology services for government and private sector customers, ensuring excellence in aerospace systems design, performance, and compliance. To serve our nations with Strength, Honor, and Purpose - forging the systems that defend freedom and shape the future of defense.
Position Overview

Tiberius Aerospace is seeking a Senior GNC Navigation Engineer to own the translation of GNC algorithms into production-grade, real-time embedded flight software for the program. This role bridges algorithm design and hardware, developing the embedded navigation filter, guidance logic, and autopilot control laws on the flight computer, along with the SIL and HIL infrastructure required to verify GNC performance end-to-end from algorithm through silicon. You are the person who makes the math run in the box.
What You'll Do

Implement GNC algorithms including the navigation filter, guidance law, and autopilot control laws in embedded C or C++ targeting the flight computer
Define and own the GNC flight software architecture including task scheduling, sensor data interfaces, GNC state machine, and fault detection logic
Develop and maintain the Software-in-the-Loop environment integrating GNC flight code with the 6-DOF trajectory simulation for closed-loop algorithm verification
Design and build the Hardware-in-the-Loop test bench including GPS signal stimulation, IMU stimulation hardware, actuator emulation, and avionics bus interfaces
Apply and enforce flight software coding standards and institute code review processes across the GNC software team
Define GNC software requirements and verification test cases and execute and close the GNC software V&V test plan
Collaborate with navigation and controls engineers on algorithm translation, numerical stability, and fixed and floating-point performance trade-offs
Perform real-time performance characterization covering CPU budget, worst-case execution time, timing jitter, and latency analysis
Support environmental test, ground test, and range test activities as the GNC software technical lead
Technical & Algorithm Implementation & Flight Software Engineering

Implement the GPS/INS navigation filter in embedded C or C++ with rigorous attention to numerical stability, fixed-point arithmetic constraints, and real-time execution timing
Develop the GNC task framework including sensor read scheduling, filter update cadence, guidance computation, and actuator command output with deterministic timing
Build and maintain the SIL environment in which the production GNC flight binary executes against the MATLAB/Simulink 6-DOF plant model in closed loop for regression testing
Design the HIL test bench architecture including interface hardware for GPS receiver simulation, IMU digital output stimulation, actuator feedback emulation, and data recording
Implement auto-code generation workflow from MATLAB/Simulink navigation and control law models to production C code using Embedded Coder or equivalent
Define and apply coding standards for the GNC software module including MISRA-C rules, static analysis requirements, and unit test coverage expectations
Develop the GNC software build system, regression test suite, and continuous integration process to support rapid algorithm iteration
Characterize flight computer GNC software performance under worst-case loading and document CPU margin, memory usage, and stack depth results
Operational & Engineering Support

Interface with the flight computer hardware team on processor selection, memory architecture, sensor bus protocols, and boot sequence requirements
Coordinate GNC software schedule and deliverables with systems engineering, the navigation team, and the I&T team
Support range test activities by providing GNC software configuration control, pre-test checkout procedures, and post-test log data extraction
Participate in configuration control board reviews for GNC software changes and maintain the software version log
Support environmental qualification by preparing GNC software test configurations for vibration, thermal, and shock testing
Provide GNC software technical inputs to subcontractor statements of work for GPS receiver and IMU firmware interfaces
What You'll Bring

B.S. or M.S. in Computer Engineering, Electrical Engineering, or Aerospace Engineering
8 or more years of embedded flight software development for flight-critical defense or aerospace systems
Expert-level C and C++ in real-time embedded environments including RTOS and bare-metal architectures
Demonstrated experience implementing Kalman filter variants or flight control laws in embedded production code
Proficiency in MATLAB and Simulink Model-Based Design including production C code generation using Embedded Coder or equivalent
Experience developing or operating SIL and HIL test infrastructure for GNC algorithm verification
Must be a U.S. citizen and eligible to obtain and maintain a U.S. government security clearance
Preferred Experience

Experience with GPS receiver software interfaces including NMEA, binary proprietary protocols, and M-code or SAASM pulse-per-second and timing interfaces
Background implementing DO-178C, MISRA-C, or equivalent safety-critical software standards in a flight program
Experience with high-g inertial sensor digital interfaces including SPI or UART IMU protocols and in-flight calibration algorithms
Familiarity with MIL-STD-1553, RS-422, or ARINC 429 avionics bus interfaces
Background with high-g avionics design considerations such as connector retention, PCB via-fill, and component derating under high-g launch load
Experience with FPGA co-design for navigation algorithm pre-processing or sensor timing synchronization
Active U.S. Secret or Top Secret security clearance
What We're Looking For

An embedded GNC software engineer who can implement a navigation filter from a MATLAB prototype, make it run deterministically on a flight computer, and verify it against a 6-DOF plant model
Someone who owns the SIL and HIL infrastructure, not just uses it, and can build it from scratch when it does not yet exist
An engineer with the numerical instincts to know when a 32-bit float is not enough and the discipline to enforce coding standards that matter
A technical leader comfortable reviewing algorithm equations with navigation engineers and debugging SPI bus timing issues with hardware engineers on the same day
A high-ownership engineer who treats flight software as a safety-critical deliverable and builds accordingly
Growth Opportunity

This role offers the opportunity to build the GNC flight software function at Tiberius Aerospace from the ground up on a program where the algorithm complexity and flight environment are genuinely challenging. The Senior GNC Software Engineer will own the implementation stack, build the test infrastructure, and close the software V&V against a real flight computer. As Tiberius grows, this person will be positioned to lead the broader flight software team and influence avionics architecture decisions on follow-on programs.
Tiberius Aerospace Inc. is an Equal Opportunity employer. The Company maintains policies and practices that are designed to prevent discrimination or harassment against any qualified applicant or employee to the extent prohibited by federal, state and local laws and regulations. By way of example, discrimination on the basis of race (actual or perceived), ethnicity, color, religion, ancestry, national origin, citizenship, sex, age, marital status, sexual orientation, physical or mental disability, medical condition, genetic information, military or veteran status, gender identity, gender expression, or any other characteristic protected by applicable law is prohibited. If you are an individual with a disability and require a reasonable accommodation to complete any part of the application process, or need an alternative method for applying, you may contact View email address on techcareers.com for assistance. Tiberius Aerospace Inc. participates in E-Verify and will provide the federal government with your I-9 Form information to confirm that you are authorized to work in the U.S.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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