Lead Cybersecurity Engineer: Zero Trust & IAM

Xtreme Solutions Inc; Washington (District of Columbia); On-site; USD 140,000 - 210,000; Full time

Job summary

XSI is seeking a Lead Cyber Security Analysis SME to anchor the cybersecurity engineering team supporting the Congressional Budget Office. This is a senior, hands‑on engineering leadership role — not a policy, compliance, or SOC‑monitoring position.

You will lead technical implementation across the full security stack and own the Government‑facing documentation that demonstrates control effectiveness. In this role you will drive Zero Trust, IAM, SIEM/EDR/XDR, vulnerability management, and cloud

Qualifications

• 10+ years of hands-on enterprise cybersecurity experience, including federal or highly regulated environments.
• Demonstrated experience as a senior cybersecurity engineer or security architect leading technical implementation across multiple security domains.
• Proven track record configuring IAM and least-privilege controls; tuning SIEM/EDR/XDR alerts; conducting incident triage and containment; coordinating vulnerability remediation; and hardening cloud or hybrid environments.
• Strong technical writing — recommendations, implementation plans, validation criteria, and control evidence.

Responsibilities

• Lead technical implementation across Zero Trust, IAM, SIEM/EDR/XDR, vulnerability management, cloud security, network segmentation, security baselines, and incident response.
• Implement and maintain enterprise security controls aligned to NIST SP 800-53 and NIST SP 800-207 — access control, configuration management, system and communications protection, audit and accountability, incident response, and system and information integrity.
• Drive Zero Trust enforcement, continuous verification of users and devices, identity-centric security, and least-privilege access (RBAC, PAM, MFA).
• Oversee centralized logging and SIEM integration, vulnerability assessment, RMF-aligned risk analysis, system hardening, and AWS/Azure cloud security.
• Support incident response, forensic data collection, root cause analysis (RCA), change management, and automated patching.
• Produce SOPs, security impact analyses, implementation plans, validation criteria, rollback steps, and audit-ready control evidence.
• Collaborate with network, cloud, application, and service desk teams to remediate risk and strengthen posture.

Skills

Enterprise cybersecurity

Technical leadership

Technical writing

Tools

IAM

SIEM/EDR/XDR

Cloud security (AWS/Azure)

Job description

XSI is seeking a Lead Cyber Security Analysis SME to anchor the cybersecurity engineering team supporting the Congressional Budget Office. This is a senior, hands‑on engineering leadership role — not a policy, compliance, or SOC‑monitoring position.

You will lead technical implementation across the full security stack and own the Government‑facing documentation that demonstrates control effectiveness. In this role you will drive Zero Trust, IAM, SIEM/EDR/XDR, vulnerability management, and cloud