Cyber Infrastructure Engineer

i3; Chantilly (VA); On-site; USD 140,000 - 190,000; Full time

Job summary

i3 is seeking a Senior Cyber Infrastructure Engineer on-site in Chantilly, VA to design, build, and maintain secure, automated cyber testing environments and tooling for threat analysis and incident response.

The role focuses on automated workflows, secure data pipelines, CI/CD, and cross-team collaboration; requires TS/SCI clearance. You will mentor teammates and ensure scalable, resilient systems aligned with mission needs.

Qualifications

• 8+ years of experience in cybersecurity engineering or related fields.
• Experience with multi-platform virtualized environments and secure system design.
• Strong programming skills for automation and tooling development.
• Knowledge of CI/CD pipelines, version control, and automated builds.
• Familiarity with secure data flows and cybersecurity operations tools.
• Excellent troubleshooting, documentation, and collaboration skills.

Responsibilities

• Design and maintain multi-platform virtualized environments for testing and security operations.
• Build custom software utilities, automation scripts, and data processing tools.
• Develop secure data ingest pipelines and integrate tools across systems.
• Implement CI/CD pipelines, version control standards, and automation practices.
• Support secure posture development and ensure environments remain scalable.
• Translate mission requirements into functional, secure software solutions.
• Provide mentorship and contribute to cross-team standardization and process improvement.

Skills

8+ years experience

Cybersecurity engineering

Software engineering

Infrastructure automation

Secure system design

Automation programming

Tools

Angular

Django (Python)

PostgreSQL

Redis

Svelte

Python ETL

Cribl

Splunk

Job description

This position is 100% on site and requires an active Top Secret SCI clearance.

Cyber Infrastructure Engineer

The Senior Cyber Infrastructure & Tooling Engineer builds and maintains specialized technical environments and custom software tools that support cybersecurity operations. This role develops automated workflows, secure data pipelines, and virtualized testing environments used for incident response and threat analysis. The engineer drives process improvements, standardizes secure engineering practices, and mentors team members while ensuring systems remain resilient, scalable, and optimized for mission needs.

Key Responsibilities

• Design and maintain multi platform virtualized environments for testing, analysis, and security operations.
• Build custom software utilities, automation scripts, and data processing tools to support rapid cyber response.
• Develop secure data ingest pipelines and integrate tools across commercial, government, and custom systems.
• Implement CI/CD pipelines, version control standards, and automation practices for rapid capability delivery.
• Support secure posture development and ensure environments remain reliable and scalable.
• Translate analytical or mission requirements into functional, secure software solutions.
• Provide mentorship and contribute to cross team standardization and process improvement. Required

Qualifications

• 8+ years of experience
• Experience in cybersecurity engineering, software engineering, or infrastructure automation.
• Experience with virtualized environments, multi platform ecosystems, and secure system design.
• Strong programming skills in modern languages used for automation and tooling development.
• Experience with CI/CD pipelines, version control, and automated build processes.
• Knowledge of secure data flows, encryption, and cybersecurity operations support tools.
• Strong troubleshooting, documentation, and collaboration skills.

Unique Skills / Technical Requirements

• In-house custom developed application
• UI o Angular o Django (Python) o Database (Postgres) o Redis o Svelte
• ETL o Python o Cribl o Database (Postgres) o Splunk o Variety of forensic tools / scripts to parse forensic images Preferred Qualifications
• Experience supporting SOC or tactical cybersecurity teams.
• Familiarity with mixed vendor environments, commercial/GOTS/COTS tools, and secure multi enclave operations.
• Certifications such as Security+, CISSP, CEH, or DevSecOps/cloud credentials."