---
title: "Software Engineer Sr - E3 at Lockheed Martin – Littleton, CO"
canonical: "https://www.metaintro.com/job/software-engineer-sr-e3-at-lockheed-martin-91479e9c-c47b-5f50-ae96-bd5d4d0dd4e5"
language: "en"
author: "Metaintro"
---

[/company/lockheed-martin](/company/lockheed-martin)[Lockheed Martin](/company/lockheed-martin)
# Software Engineer Sr - E3 at Lockheed Martin

Department: Space

Compensation

$110,300 – $204,900/yr

**Setup**
: On-site

**Location**
: Littleton, Colorado

**Type**
: Full-time

**Level**
: not_specified

**Posted**
: Sep 2, 2026

## Description

The role plans, coordinates, designs, develops, documents, tests, and debugs software for business or mission applications, including simulation software, trajectory analysis, and data-processing systems. It requires experience in simulation software development, testing and validation, configuration management, and programming in languages such as MATLAB, Fortran, C/C++, Python, or Java. The position requires U.S. citizenship and the ability to obtain and maintain a Top Secret clearance, with a final Secret clearance needed to start. The full-time salary range is $110,300 to $204,900, with medical, dental, vision, flexible work arrangements, retirement matching, paid time off, and other benefits.

## Trending job searches

Every query opens live roles, salary samples, and market demand — tap a search to run it instantly.

- [Find Software Engineer Sr - E3 jobs in Littleton, Colorado, United States](/jobs/search?q=Find+Software+Engineer+Sr+-+E3+jobs+in+Littleton%2C+Colorado%2C+United+States)
- [Find roles similar to Software Engineer Sr - E3 in Littleton, Colorado, United States](/jobs/search?q=Find+roles+similar+to+Software+Engineer+Sr+-+E3+in+Littleton%2C+Colorado%2C+United+States)
- [Find Software Engineer Sr - E3 jobs with Simulation software and Software testing](/jobs/search?q=Find+Software+Engineer+Sr+-+E3+jobs+with+Simulation+software+and+Software+testing)
- [Find jobs similar to Software Engineer Sr - E3](/jobs/search?q=Find+jobs+similar+to+Software+Engineer+Sr+-+E3)
- [Find Software Engineer Sr - E3 jobs posted this week](/jobs/search?q=Find+Software+Engineer+Sr+-+E3+jobs+posted+this+week)
- [Find Software Engineer Sr - E3 jobs paying $110,000 or more per year](/jobs/search?q=Find+Software+Engineer+Sr+-+E3+jobs+paying+%24110%2C000+or+more+per+year)
- [Find Developer jobs in Littleton, Colorado, United States](/jobs/search?q=Find+Developer+jobs+in+Littleton%2C+Colorado%2C+United+States)
- [Find Developer jobs with Simulation software and Software testing](/jobs/search?q=Find+Developer+jobs+with+Simulation+software+and+Software+testing)

## Get More from Metaintro

Unlock powerful job search, personalized recommendations, and deep career insights from comprehensive, market-leading data and live market signals.

- [Browse all jobs](/jobs/search)
- [Access help center](/help)
- [Explore our content](/blog)

![](https://cdn.metaintro.com/rs:fill:1200:800/q:30/plain/images/bridges/bridge-expand.1df895c6bd76d96f.png)

For job seekers

## Ready to find a role that actually fits?

Upload your résumé, start a Job Search Thread, and let Metaintro rank real openings against your experience — then guide you from search to offer.

[Get Started Free](/signup)[Search matching jobs](/jobs/search)

Match

Compare live roles against your current evidence.

Position

Turn proof projects into role-specific applications.

Improve

Use market feedback to keep the skill plan current.

[Return to navigation](#main-navigation)