Principal Full Stack Developer

Herndon, VA

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Type: Direct-Hire

Experience: 0

Category: Information Technology

Contractor Work Model: Onsite

Brand: System One

Shift: On-Site

Job ID: 344926

Date Posted: 01/12/2026

Shortcut: http://jobs.systemone.com/27PLg0


Principal Full Stack Developer
Dulles, VA - onsite
Secret Clearance is required to start 


This role involves contributing to the design, development, and deployment of advanced cybersecurity capabilities to support CISA's mission today and into the future.

Responsibilities may include but are not limited to:
Infrastructure Engineering:
•    Design, test, and implement advanced cybersecurity software capabilities as a key contributor within Agile Scrum teams.
•    Support risk assessments and recommend risk mitigation strategies as required.
Full Stack Development:
•    Develop automated unit tests and debug thoroughly to ensure reliable, high-quality code.
•    Collaborate on Deployment, DevOps, and CI/CD processes to optimize pipelines and streamline workflows.
•    Establish and interpret monitoring systems for CI/CD processes to ensure operational effectiveness.

Qualifications:
•    Must have an active Secret clearance with the ability to obtain DHS suitability
•    Must be able to obtain a TS/SCI Clearance
•    8+ years of software development experience required
•    Minimum 2+ years of Agile full stack infrastructure engineering experience with a focus on production AWS environments.

Desired Skills:
•    Experience with Amazon CloudWatch, Amazon Elastic Block Storage, Amazon EC2 Image Builder, Amazon Elastic Cloud Registry, Amazon Elastic Container Service, Amazon Event Bridge, AWS Config, AWS Identity and Access Management (IAM), and AWS Secrets Manager.
•    Proven ability as a Full Stack Developer with experience in Agile/Scrum development methodologies.
•    Automated remediation expertise for security vulnerabilities.
•    Familiarity with:
o    CISA Guidance:
?    Securing the Software Supply Chain.
?    Open-Source Software Security.
?    General Cybersecurity Best Practices.
o    NIST Frameworks:
?    NIST SP 800-218 – Secure Software Development Framework.
o    Technical Expertise:
?    Knowledge of automated solutions using Ansible.

Desired Certifications:
•    Cloud Certification: AWS Certified Cloud Practitioner.
•    Cybersecurity Certifications: DoD 8570.1 IAT Level II or CSSLP.

Required Education:
Bachelor’s Degree in Software Engineering, Computer Science or a related discipline is required. [Ten (10) years of experience (for a total of eighteen (18) or more years) may be substituted for a degree.

System One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

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