1,988,661open jobs
117,687companies
247,015added this week
Browse all
Salary
$90k – $190k per year
Location
In office (Houston)
Seniority
Staff · 10+ years exp

Confirmed on the employer's own hiring board on Oct 26, 2026. First seen by Alion on Aug 24, 2026. CACI International scores D on the Alion truth index.

Overview
Company
Impact
Profile match
CACI International is an American technology company founded in 1962 that works almost entirely for United States defence, intelligence and federal civilian agencies. It has moved from being a conventional IT services contractor toward supplying its own technology, with a substantial expeditionary electronic warfare and signals intelligence product line, photonics and optical communications for space, and secure network modernisation. Headquartered in Reston, Virginia, the company employs more than twenty thousand people, the majority holding security clearances, and has grown through a steady programme of acquisitions that add differentiated technology rather than headcount alone.
Job Title: NASA Software Project Lead Engineer: Space Vehicle Simulation + Software DevelopmentJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: NoneEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: Continental US* * *

CACI provides expertise and technology to enterprise and mission customers in support of national security missions and government transformation for defense, intelligence, and civilian customers.

CACI’s culture is the driving force behind our success. Our culture defines who we are, how we act, and what we believe is both the right way and our duty in conducting business. Our culture unifies us as a company and strengthens our resolve to meet our customers’ - and our country’s - most critical missions.

CACI is looking for experienced lead spaceflight simulation software engineers to provide project leadership and technical expertise in simulation software math model development and integration to support human-rated space vehicle engineering and training simulations. You will work with current and future space flight simulations and models at NASA Johnson Space Center including the lunar base, lunar vehicles and assets, Human Landing Systems, future exploration systems, flexible spacecraft modeling, and robotic manipulators. You will include project leadership including prototyping, requirements definition, design, development, test and verification, integration of simulations and math models.

This position may not be in a lead role initially, but, may begin in a senior engineering role involving extensive technical work. The position will lead to a future role in leadership.

The Opportunity:

This position requires a self-motivated, capable person with strong verbal and written communication skills. In addition to outstanding technical expertise, the individual must be very people savvy, have leadership experience and strong customer relationship skills, possess a positive team-player attitude, be flexible and willing to take on new assignments and responsibilities as they arise, and be an articulate speaker able to communicate complex technical ideas in a convincing manner. The individual must share our passion for our Nation's Space Program and share in the excitement of developing the next human-rated space vehicles.

Qualifications:

  • Design and develop spacecraft simulations and math models for engineering and training simulations.

  • Perform systems engineering in support of simulation requirements, interfaces, design, and performance.

  • Perform engineering analysis using simulation.

  • Perform simulation and math model integration, test, and verification.

  • Integrate and test simulation software/hardware.

  • Collaborate with engineering teams and contractors across multiple NASA programs and projects.

  • Ensure adherence to JSC engineering software process practices.

  • Willingness to take on a future technical leadership role including leading a software development team, developing and prioritizing new features based on customer needs, interacting with and providing support to users, managing project schedule, and giving large presentations and demonstrations of product capabilities.

  • Support customer status reporting.

  • Support people leadership including assignments and project leadership.

  • Support recruiting and team member development initiatives.

This work takes place at NASA/JSC in Houston, TX, a highly stimulating and dynamic environment that is critical in human space flight and the space exploration initiative.

Required:

  • Must be a U.S. Citizen or Permanent Resident to facilitate access to USG facilities.

  • B.S. in Aerospace, Electrical, Software, Computer Science, or related disciplines required.

  • At least ten years of experience in simulation development.

  • Experience in technical leadership of simulation software development teams.

  • Strong C++ programming skills.

  • Experience developing software in a Linux environment.

  • Experience coding with Python.

  • Experience in simulation integration and development.

  • Experience in math model/simulation unit testing.

  • Experience in simulation verification and validation.

  • Must have experience in the entire software life cycle.

  • Must be flexible, open to new challenges in a dynamic environment, and possess strong technical expertise combined with strong verbal and written communication skills.

  • Ability to manage multiple priorities with little supervision.

  • Must be a highly responsible, team-oriented individual with strong work ethic.

Desired:

  • M.S. in Aerospace, Electrical, Software, Computer Science, or related discipline.

  • Experience with the Trick Simulation Environment.

  • Experience reviewing, understanding, and estimating effort for NASA task orders and with NASA contracting/proposals

  • Experience with simulation development at NASA-JSC

  • Object Oriented Analysis and Design (OOAD) experience.

  • Experience developing or integrating 3-D graphics for simulations.

  • Experience developing real-time video acquisition and processing software.

  • Experience with Git.

  • Experience in human-rated space vehicle subsystem domains (e.g., ECLSS, EPS, Propulsion, Mechanisms, C&T, C&DH, GN&C, Robotics).

  • Experience with all aspects of project management.

This position is contingent on funding and may not be filled immediately. However, this position is representative of positions within CACI that are consistently available. Individuals who apply may also be considered for other positions at CACI.

This position is contingent on funding and may not be filled immediately. However, this position is representative of positions within CACI that are consistently available. Individuals who apply may also be considered for other positions at CACI.

What You Can Expect:

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose - to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground - in your career and in our legacy.

Pay Range:

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is:

$90,300 - 189,600 USD

CACI is an Equal Opportunity Employer.All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
1,988,661 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Backend
Similar stack
Same company
Houston
$155k – $200k per year • In office • TS/SCI • Full-Time
Python
Java
TypeScript
Java
Maven
AI/ML
Model Context Protocol
Apply
$111k – $150k per year • Remote (United States) • Full-Time • 3+ years exp • Nashville
JavaScript
SQL
C#
C#
ASP.NET Core
Entity Framework Core
Databases
SQLite
Frontend
React.js
OpenLayers
SpaceTech
QGIS
Apply
$118k – $223k per year • Remote (United States) • Full-Time • 10+ years exp • United States
Python
JavaScript
TypeScript
SQL
Python
Django
Databases
Databricks
AI/ML
Machine Learning
Frontend
Next.js
React.js
DevOps
Rest API
Terraform
GitHub Actions
Azure
CI/CD
Git
AWS
Docker
Gitflow
GitHub
Cybersecurity
HIPAA
Management
Agile
Scrum
Apply
≈ $180k – $336k per year (Estimated) • In office • 8+ years exp • Bachelor's Degree • Seattle
C++
AI/ML
Vertex AI
TPU
DevOps
GCP
Apply
$130k – $248k per year • In office • Nationals only • Full-Time • 5+ years exp • Bachelor's Degree • Evendale
Apply
Hybrid • 4+ years exp
Python
DevOps
Git
Linux
Windows
Unix
QA
Selenium
Pytest
Apply
≈ $67k – $133k per year (Estimated) • In office • PhD • Garching bei München
Python
C++
AI/ML
AI Agents
DevOps
Linux
Apply
≈ $41k – $108k per year (Estimated) • Remote (Romania) • Full-Time • Master's Degree • Romania
Python
C++
AI/ML
llama.cpp
vLLM
SGLang
KV Cache
DevOps
SLURM
CI/CD
Jenkins
Kubernetes
GitHub
Apply
≈ $29k – $60k per year (Estimated) • In office • Internship • Mannheim
Python
Analytics
Microsoft Excel
Management
Power Apps
Apply
$19k – $38k per year • Hybrid • Bachelor's Degree
DevOps
GCP
GitHub Actions
GitLab CI
SLURM
Azure
CI/CD
Jenkins
AWS
Docker
Kubernetes
HPC
Linux
Windows
Unix
Management
Agile
QA
Selenium
JMeter
Cypress
Playwright
Gatling
Postman
Apply
$40k – $80k per year • In office • TS/SCI • Internship • Bachelor's Degree • Denver
JavaScript
Java
SQL
Java
Spring Boot
Databases
ElasticSearch
Frontend
Webpack
Sass
Less
DevOps
Rest API
WebSockets
Git
AWS
Docker
Kubernetes
Linux
Management
Agile
Apply
$115k – $252k per year • Remote (United States) • TS/SCI • Full-Time • 3+ years exp • Bachelor's Degree • United States
Python
Go
Java
AI/ML
Spark
Airflow
DevOps
GCP
GitLab CI
CI/CD
Jenkins
Docker
Kubernetes
Google GKE
Apply
$109k – $240k per year • In office • TS/SCI • Full-Time • 10+ years exp • Bachelor's Degree • Sarasota
Java
C#
C++
Java
Spring Boot
DevOps
OpenShift
Helm
CI/CD
Kubernetes
Management
Agile
Apply
$104k – $218k per year • In office • TS/SCI • Full-Time • 7+ years exp • Bachelor's Degree • Chantilly
Python
JavaScript
TypeScript
SQL
Node JS
Databases
MySQL
PostgreSQL
Frontend
Vue.js
Angular
React.js
DevOps
Rest API
CI/CD
Git
Docker
Kubernetes
Configuration Management
Linux
Cybersecurity
LDAP
PKI
Management
ServiceNow
Agile
Scrum
ITSM
Apply
$90k – $190k per year • In office • Secret • Full-Time • 8+ years exp • Bachelor's Degree • Ashburn
Databases
Oracle
DevOps
Terraform
Ansible
Red Hat
VMWare
CI/CD
Windows Server
Configuration Management
Linux
Windows
Unix
Cybersecurity
SonarQube
Apply
PORTER (H) 3 hours ago
≈ $27k – $61k per year (Estimated) • In office • Houston
Apply
$86k – $110k per year • Remote (United States) • Full-Time • 10+ years exp • Bachelor's Degree • Houston
Apply
$66k – $85k per year • Remote (United States) • Full-Time • 8+ years exp • Houston
Apply
$135k per year • Hybrid • Contractor • 8+ years exp • Houston • Atlanta
AI/ML
Claude
DevOps
GitHub
Management
Miro
Notion
Scrum
Kanban
Waterfall
Apply
≈ $41k – $105k per year (Estimated) • In office • Part-Time • Houston
Apply
See all jobs
This is one of many
1,988,661 more open roles from verified company boards, updated every day.