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# Algorithms Software Engineer Lead - Level 3 or 4 (AHT)

- **Company:** Northrop Grumman
- **Location:** Boulder, CO, United States
- **Experience:** Expert
- **Salary:** $114,000.0 - $171,000.0
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Algorithm Design, C++ (Programming Language), Data Fusion, Software Debugging, Linux, Distributed Systems, Statistical Hypothesis Testing, Python (Programming Language), Verification and Validation (Software), SQL Databases, Visual Systems, Plotly, C++14
- **Published:** October 15, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9244052/algorithms-software-engineer-lead-level-3-or-4-aht

## About the Role

This requisition may be filled at either a Principal Software Engineer - Level 3 or a Sr. Principal Software Engineer - Level 4., * Principal Software Engineer - Level 3: Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline preferred from an accredited university and 5 years of related experience or a Master's STEM degree and 3 years of related experience, or 1 year with a PhD.

 * Sr. Principal Software Engineer - Level 4: Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline preferred from an accredited university and 8 years of related experience or a Master's STEM degree and 6 years of related experience, or 4 years with a PhD.
 * Applicants must have a current active in-scope U.S. Government issued Secret security clearance and the time of application, with the ability to obtain and maintain a Top Secret security clearance.

 * Ability and willingness to travel 10% to support business needs.
 * Prior C++ Development Experience

Preferred Qualifications:

 * Current active in-scope Top Secret security clearance
 * Linux Experience
 * Modern C++ Experience - Ability to write modern C++ code (templates, understanding move semantics, smart pointers, etc.)
 * Python Experience
 * Strong Math Background
 + Stochastic Processes
 + Linear Algebra
 + Probability
 * Statistical Principles & Analysis Experience
 + Hypothesis Testing
 + Probability Distributions
 + Conditional Probability
 + Multi-Variate Random Variables
 + Kalman Filters
 + Least Squares
 * Algorithm design and state estimation experience
 * Stereo vision systems experience
 * Infrared systems experience
 * Satellite systems experience
 * Data fusion experience
 * Distributed systems experience
 * Algorithm verification and validation experience
 * Plotly, JavaScript, and SQL experience
 * Prior Leadership and Mentorship Experience

#COSpace

#SpaceSoftwareJobs

#SpaceEngJobs

## Description

As an Algorithms Developer / Software Engineer Lead - Level 3 or 4, you will be responsible for leading a team of 2-4 people. We are a smaller team of ~15 people working on cutting edge missile tracking and interception capabilities. Designing, developing, testing, documenting, debugging software and mathematical algorithms used to identify different threats. This fast-paced and cutting-edge research and development environment will rely on your familiarity with modern software practices, physics principles, and mathematics., * Performance analysis of tracking and state estimation algorithms

 * Tool and prototype development using modern C++ v20+
 * Algorithm defect tracking and resolution
 * Analysis tool development (Python)
 * Technical documentation input as required
 * Input to customer-facing presentations
 * Collaborate with Chief Architect, Program Management and Team Lead peers to set technical vision for the tracker team
 * Provide tasking and mentorship to 2-4 Tracker team members

The selected candidate should thrive in a fast-paced work environment with high expectations, significantly diverse assignments, and collaborative team settings across all levels.