Systems Engineer, Mid-level

CACI International Inc; Denver (CO); On-site; USD 82,000 - 172,000; Full time

Job summary

CACI International Inc in Denver is seeking a Mid-level Systems Engineer to join the FADE team. You will collaborate with agile development, product owners, infrastructure, site reliability engineering, and security to manage changes as new capabilities are added.

The role requires understanding interfaces, coordinating with government customers and teams, and supporting API integration, documentation, and testing to enable critical U.S. Government missions.

Qualifications

• U.S. citizen with TS/SCI clearance and polygraph preferred.
• Bachelor’s degree in Systems Engineering or related field with 5+ years of related experience.
• Strong communication to coordinate FADE activities.
• Proficient technical writing: operation concepts, release notes, guides, test procedures.
• Experience debugging and testing REST APIs.
• Experience building dashboards to monitor API usage (Grafana/ELK).
• Knowledge of RESTful API services, OGC WFS/WMS, and real-time streaming technologies.

Responsibilities

• Own and update the program’s technical documents with the engineering team.
• Define and execute dynamic document generation from system interfaces.
• Become an expert on externally exposed APIs and standards.
• Coordinate API data sharing requests and lead TEMs with external customers.
• Provide API integration support and user troubleshooting.
• Present technical briefings to the FADE PMO for integration approvals.
• Support API endpoint testing and customer integration use cases.
• Coordinate activities among FADE customers, engineers, developers, and mission ops teams.
• Analyze system requirements and assist design/development when needed.

Skills

Clearance TS/SCI

Communication skills

Technical writing

REST APIs debugging

REST API usage monitoring

API coordination

Education

Bachelor’s degree in Systems Engineering or related field

Tools

Grafana

ELK

GeoServer

Kafka

Jupyter Notebooks

Job description

Job Title: Systems Engineer, Mid-level

Job Category: Engineering

Time Type: Full time

Minimum Clearance Required to Start: TS/SCI with Polygraph

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Continental US

Anticipated Posting End: 12/20/2026

The Opportunity:

As a Systems Engineer on the FADE team, you will be working closely with our agile development, product owners, infrastructure, site reliability engineering, and security teams to manage and track changes to the system as new capabilities are being added to the system.

This position requires you to understand existing program interfaces, but also track updates and additions to the interfaces and coordinate changes with the government customer and other teams within the FADE organization.

You will be a key member of the team, doing work that matters for some of the U.S. Government’s most critical missions, building relationships and interfaces that support the IC and DoD communities.

Responsibilities:

• Own the program’s technical documents while working with the engineering team to keep documents up to date
• Define and execute dynamic document generation based on system interfaces
• Become an expert on externally exposed APIs and support external entities utilizing custom APIs, Open Geospatial Consortium (OGC) API standards, API Gateways, and others
• Coordinate new API data sharing requests and lead Technical Exchange Meetings (TEMs) with external customers
• Provide technical integration support and user troubleshooting
• Conduct technical briefings to the FADE Program Management Office (PMO) for integration approvals
• Perform API testing support for endpoint changes and customer integration use-cases
• Possess the communication skills to coordinate activities among FADE customers, system engineers, developers, and mission operations teams
• If/when necessary, analyze system requirements and assist in design and development activities to satisfy requirements

Qualifications :

Required:

• U.S. Citizen and hold a current Top Secret SCI clearance and polygraph preferred
• Bachelor’s degree in Systems Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or related discipline from an accredited college or university and 5+ years of related experience is required. Five (5) years of additional SE experience may be substituted for a bachelor’s degree
• Strong communication skills to coordinate activities among FADE customers, system engineers, developers, and mission operations teams
• Technical writing skills to include: concepts of operation, software release notes, user guides, test procedures, engineering and architectural diagrams, and presentation development
• Knowledge and experience debugging, troubleshooting, and testing REST APIs
• Experience using and creating dashboarding tools (Grafana, ELK, etc) to monitor API usage
• Experience performing system and user activity log reviews
• Have knowledge of RESTful API services, OGC WFS and WMS standards, and Real-Time Streaming (web socket) and associated technologies (GeoServer, Jupyter Notebooks, Kafka, etc.) used for integration

Desired:

• Experience with creating and maintaining Model-Based Systems Engineering (MBSE) artifacts

• Experience creating or maintaining DoD Architecture Framework (DoDAF) views

• Experience with automated test frameworks that could be leveraged to perform API level testing

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.

Since this position can be worked in more than one location, the range shown is the national average for the position.

The proposed salary range for this position is:

$82,100-$172,400

CACI is anEqualOpportunity 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 otherprotectedcharacteristic.