Senior Software Developer, Systems Software

Senior Software Developer, Systems Software Full Time | Arlington, VA | Secret Clearance required

Steel Gate LLC is seeking a Senior Software Developer to support a secure, Drupal based collaboration environment used by critical infrastructure and cybersecurity partners. This role focuses on platform enhancements, module development, performance optimization, and integration of mission driven capabilities. The ideal candidate has deep experience with Drupal architecture and thrives in environments where reliability, security, and scalability are essential.

Bachelor’s degree in computer science, Information Technology, Software Engineering, or a related field.

• Minimum of eight years of experience in web or platform development
• Minimum of three years developing and managing Drupal based platforms
• Experience with secure platform design in SBU/FOUO environments
• Experience with Dev Sec Ops , CI/CD pipelines, and platform stabilization
• Experience supporting incident response and corrective action workflows

Active Drupal certification or Government approved equivalent (required)

• Drupal architecture, module development, and configuration
• Secure platform design within SBU/FOUO environments
• API integration and content management frameworks
• Platform performance optimization and scalability

Full-Time

$100k-$120k

Monday-Friday

• 401(k) matching
• Full Medical
• Paid time off
• Professional development assistance

STEELGATE LLC is a Service-Disabled, Veteran-Owned Small Business (SDVOSB) that prides itself in hiring top-level Subject Matter Experts (SME’s) proven to exceed deliverable expectations. STEELGATE LLC is focused on solving the hard problems facing our government and commercial clients. Our success lies in blending together relevant domain/functional knowledge with deep expertise in Information Technology, Cybersecurity, Defensive Cyber Operations, cloud-based Dev Sec Ops , Data Analytics & AI, Acquisition and Acquisition Management, and more.

STEELGATE LLC has a positive, inclusive workplace environment where all team members and partners work towards mutual success. We have established a reliable reach-back program whereas all SMEs are available to support, advise and directly complete mission deliverables when necessary. STEELGATE LLC has a worldwide reputation as a valued and trustworthy partner. Our can-do attitude and willingness to support any mission requirement sets us apart from other small business organizations.

Find out more about STEELGATE LLC @

We are an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by law.