Mission-Critical Systems Integration Engineer

CACI International Inc.; Sterling (VA); On-site; USD 82,100 - 172,400; Full time

Job summary

CACI International Inc. seeks a System Integration Engineer in Sterling, VA to solve complex technical challenges and integrate systems across mission environments. The role emphasizes scalable, maintainable software-enabled solutions and cross-team collaboration.

A current TS/SCI clearance is required, with CI Polygraph preferred. The candidate will document architectures, guide automation opportunities, and work with engineering, operations, and leadership to sustain critical systems.

Qualifications

• Active TS/SCI clearance required or ability to obtain one.
• CI Polygraph preferred; candidates eligible to obtain one encouraged to apply.
• 5+ years of experience in systems engineering, software engineering, systems integration, or related.
• Experience integrating software applications, enterprise systems, APIs, databases, and distributed technologies.
• Strong technical writing skills and ability to produce architecture docs, interface control documents, and system diagrams.

Responsibilities

• Solve complex technical and operational problems with a systems-thinking approach.
• Understand how disparate systems, people, and processes work together to achieve mission success.
• Develop practical, scalable, and maintainable technical solutions.
• Communicate effectively across engineering, operations, and leadership teams.
• Produce high-quality technical documentation enabling long-term system sustainment.
• Identify opportunities for automation, integration, and continuous improvement.

Skills

Active TS/SCI clearance

CI Polygraph preferred

5+ years systems engineering

Software integration

Documentation skills

Education

Bachelor's degree in a technical field

Tools

REST APIs

Job description

CACI International Inc. seeks a System Integration Engineer in Sterling, VA to solve complex technical challenges and integrate systems across mission environments. The role emphasizes scalable, maintainable software-enabled solutions and cross-team collaboration.

A current TS/SCI clearance is required, with CI Polygraph preferred. The candidate will document architectures, guide automation opportunities, and work with engineering, operations, and leadership to sustain critical systems.