Cyber Software Engineer

CACI International Inc; Florham Park (NJ); On-site; USD 79,400 - 162,700; Full time

Job summary

CACI International Inc. in Florham Park, NJ seeks a Cyber Software Engineer to help design, prototype, and transition cyber tools and capabilities for DoD/IC missions.

You will work with software, systems, and data science teams on mission-focused R&D, demonstrations, and capability development, while preparing technical documents and participating in reviews under a SECRET clearance. The role emphasizes hands-on development, testing in cyber-physical environments, and close collaboration with

Qualifications

• 2+ years of hands-on software design & development, cybersecurity R&D, systems analysis, or capability development.
• Active SECRET clearance
• Background in networking, distributed systems, or cyber operations concepts.
• Proficiency in Python and C/C++.
• Familiarity with networking and cyberspace modeling & simulation capabilities.
• Ability to work in research-oriented, fast-moving environments with multidisciplinary teams.
• Knowledge in Algorithms & Data Structures
• Understanding of networking concepts and protocols (e.g., TCP/IP, TLS).
• Systems engineering experience including profiling and code optimization (CPU, memory, latency).
• Experience with Python – incl. PyTorch, TensorFlow, sklearn, scipy, virtual environment management
• Experience with network programming and protocol: Socket programming such as TCP/UDP, routing protocols, L2/L3 tunneling.

Responsibilities

• Assist in the design and development of innovative cyber tools, techniques, and prototypes that advance next‑generation cybersecurity and networking capabilities.
• Support integration and demonstration of experimental capabilities for customer engagements, including planning and execution of capability demonstrations.
• Assist in implementing and evaluating algorithms, automation approaches, analytics, and modeling techniques relevant to cyber missions.
• Assist with the design and implementation of realistic cyber‑physical test environments to measure system resilience, performance, and operational utility.
• Collaborate with software engineers, systems engineers, data scientists, and mission operators to transition prototypes into operational workflows.
• Prepare technical documentation, status reports, experiment plans, and demonstration materials for internal and external stakeholders.
• Participate in technical reviews, program planning sessions, and cross‑organizational coordination with CS&T leadership.

Skills

Python

C/C++

Networking concepts

Algorithms & Data Structures

Socket programming

PyTorch

TensorFlow

Scikit-learn

SciPy

Virtual environments

Tools

PyTorch

TensorFlow

Scikit-learn

SciPy

Job description

Cyber Software Engineer

The Opportunity

Join the Cyber Science & Technology (CS&T) team supporting advanced research, development, experimentation, and operational support to tackle challenges in networking and cybersecurity. CS&T engineers help design, prototype, and transition cutting‑edge capabilities that enhance national security missions. You will contribute to mission‑driven R&D, including customer‑aligned demonstrations, internal IRAD efforts, and cyber capability development supporting programs and customers across the DoD and IC.

Responsibilities

• Assist in the design and development of innovative cyber tools, techniques, and prototypes that advance next‑generation cybersecurity and networking capabilities.
• Support integration and demonstration of experimental capabilities for customer engagements, including planning and execution of capability demonstrations.
• Assist in implementing and evaluating algorithms, automation approaches, analytics, and modeling techniques relevant to cyber missions.
• Assist with the design and implementation of realistic cyber‑physical test environments to measure system resilience, performance, and operational utility.
• Collaborate with software engineers, systems engineers, data scientists, and mission operators to transition prototypes into operational workflows.
• Prepare technical documentation, status reports, experiment plans, and demonstration materials for internal and external stakeholders.
• Participate in technical reviews, program planning sessions, and cross‑organizational coordination with CS&T leadership.

Qualifications

Required:

• 2+ years of hands‑on experience in software design & development, cybersecurity R&D, systems analysis, or capability development.
• Active SECRET clearance
• Background in networking, distributed systems, or cyber operations concepts.
• Proficiency in Python and C/C++.
• Familiarity with networking and cyberspace modeling & simulation capabilities.
• Ability to work in research‑oriented, fast‑moving environments with multidisciplinary teams.
• Knowledge in Algorithms & Data Structures
• Understanding of networking concepts and protocols. (E.g., TCP/IP, TLS)
• Systems engineering experience including profiling and code optimization (CPU, memory, latency)
• Experience with Python – incl. Pytorch, tensorflow, sklearn, scipy, virtual environment management
• Experience with network programing and protocol: Socket programing such as TCP/UDP, routing protocols, L2/L3 tunneling.

Desired:

• Experience supporting government research‑oriented customers or service cyber components.
• Experience developing cyber‑physical test ranges, simulation environments, or digital twins.
• Familiarity with orchestration frameworks, cloud environments, or advanced analytics.
• Experience in computer vision, machine learning, mathematical optimization, understanding of video encoding
• Experience working on multithreaded, distributed high-performance systems
• Active Top Secret clearance.

Pay Range

Pay Range: $79,400 - $162,700

Equal Opportunity Employer

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.