Cybersecurity Engineer

Five Forty • Arlington, FL

1d • Onsite

About The Position

540 is seeking a Cybersecurity Engineer to support our partnership with Google and the Department of War in advancing mission-critical capabilities for a global data processing platform. This platform leverages Machine Learning, modern cloud and containerized technologies to ingest, process, and analyze high-volume, time-series data. In this role, you will support the implementation and maintenance of cybersecurity controls across a complex cloud and platform environment. You will work closely with engineers, architects, and security stakeholders to ensure systems are secure, compliant, and resilient within highly regulated, high-impact environments.

Requirements

• 5+ years of experience in cybersecurity, information assurance, or related roles
• Experience working with cloud environments (AWS, Azure, or Google Cloud)
• Experience completing the RMF process from start to finish, including required documentation
• Experience creating and managing ATO packages in eMASS
• Familiarity with DoD security frameworks and NIST 800-53 Rev. 5
• Experience supporting vulnerability management and security assessments (including DISA STIG testing)
• Understanding of identity and access management concepts
• Familiarity with securing containerized environments and cloud-native applications
• Experience with security tools such as vulnerability scanners or SIEM platforms
• Experience implementing and analysing SAST for backend or full-stack applications
• Strong problem-solving and analytical skills
• Ability to communicate effectively with technical and non-technical stakeholders
• Ability to work independently while contributing to a team environment
• CompTIA Security+ certification required (or ability to obtain within 30 days of hire)

Nice To Haves

• Experience supporting Google Cloud environments (GCP)
• Familiarity with cloud security concepts
• Experience working with Linux-based systems
• Experience with DevSecOps practices and CI/CD security integration
• Experience supporting U.S. Federal Government programs, particularly DoW environments
• Experience supporting cybersecurity efforts within high-security or highly-regulated environments

Responsibilities

• Support implementation of security controls across cloud infrastructure, platforms, and applications
• Assist in maintaining compliance with DoD security requirements and frameworks (RMF, NIST 800-53)
• Collaborate with engineers and architects to integrate security into system design and development
• Support vulnerability management, scanning, and remediation efforts
• Assist in monitoring system security posture and responding to security findings
• Help implement identity, access management, and least privilege principles
• Support development and maintenance of security documentation, including SSPs and POA&Ms
• Participate in security assessments, audits, and authorization activities
• Support incident response activities and root cause analysis
• Collaborate with cross-functional teams to promote secure development and operational practices

Benefits

• Flexible PTO + all Federal holidays off
• Health, dental and vision insurance plans
• Flexible Spending Account (FSA)
• 401k with employer match
• Company-sponsored life insurance, short- and long-term disability
• Professional development (training, certifications, conferences)
• Paid cloud developer accounts
• Referral bonuses
• HQ office perks (parking / metro reimbursement, nitro coffee & lunches)
• Annual social events (540 Week, hackathon, charity golf tournament, etc.)
• Access to 540’s Washington Capitals & Nationals tickets

What This Job Offers

• Job Type: Full-time
• Career Level: Senior