Cyber Security Engineer – Senior / Cloud DoS CSS

OneZero Solutions; Washington (District of Columbia); Remote; USD 150,000 - 210,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Life insurance

401(k) matching

Paid time off and holidays

Employee referral program

Educational assistance

Job summary

OneZero Solutions is seeking a Senior Cloud Security Engineer to own cloud security across DT/EA/CST environments. You will operate Wiz for cloud-based systems, apply zero-trust overlays, and manage security evidence for ATOs.

Requirements include 8+ years in cybersecurity, SECRET clearance, and experience with CNAPPs and cloud security controls. This is a remote role within the National Capital Region, with travel as needed.

Qualifications

• Eight (8)+ years of cybersecurity or systems engineering experience.
• Active, final SECRET clearance; U.S. citizenship.
• DoD 8140/8570 IAT Level III or IAM Level II baseline certification (e.g., CISSP, CASP+, CCSP, CISM) or ability to obtain within 6 months.
• Experience producing authorization evidence (diagrams, configuration exports, scan reports) for ISSOs and assessors.
• Hands-on experience with cloud CNAPP/CSPM platforms (Wiz strongly preferred).
• Knowledge of NIST SP 800-53 Rev. 5 control implementation in cloud environments and FedRAMP inheritance models.

Responsibilities

• Operate, extend, and monitor the Wiz cloud security platform in cloud/hybrid environments.
• Document controls inherited from CSPs and DT enterprise services in SSPs and RMF artifacts.
• Support cryptographic key management and cryptographic lifecycle activities for cloud/hybrid systems.
• Develop cloud architecture, data-flow diagrams, and evidence for RMF packaging and evidence indices.
• Review vulnerability and compliance scans and drive high-priority findings to closure with deadlines.
• Coordinate with CSPs and cloud-ops teams to validate remediation and maintain security posture.

Skills

CNAPP/CSPM experience

Wiz platform knowledge

FedRAMP knowledge

NIST SP 800-53 Rev.5

Security authorization evidence

Python/PowerShell

Cloud security architecture

Education

Bachelor's degree in Computer Science/IT/Cybersecurity

Tools

Terraform

CloudFormation

Kubernetes security

Bicep

AWS/Azure native security tools

Job description

We are an employee-centric company that truly values our team members and the contributions they make to our customers and the missions they support. We pride ourselves on being forward-leaning thinkers and on building teams that are, and continue to be, technically proficient across a broad range of cyber mission areas. OneZero full-time employees receive a highly competitive benefits package, including health, dental, vision, and life insurance, a 401(k) with company matching, paid time off and holidays, an employee referral program, and educational assistance.

Additional details are available on our website: https://www.onezerollc.com/careers/

Position Title: Cyber Security Engineer – Senior / Cloud

Location: Remote; must reside within the National Capital Region (NCR).

Clearance: Secret

Work Schedule: Full-time, 40 hours per week. Must be available during Department core hours of 9:00 a.m. – 3:00 p.m. ET, Monday – Friday, and flex working hours as needed to meet CST day-to-day and emergent requirements. No work is performed on Federal holidays or during Government closures. Participates in a rotating on-call schedule supporting 24x7x365 availability of the vulnerability and compliance scanning platforms.

Employment Type: Full-Time, Exempt (W-2), contingent upon Call Order award

Position Summary

The Senior Cloud Security Engineer owns cloud security engineering for DT/EA/CST's cloud-based and hybrid authorization boundaries. The engineer operates and extends the Wiz cloud security platform, applies Department cloud and zero-trust overlays, documents controls inherited from cloud service providers and DT enterprise services, supports cryptographic key management activities, and produces the cloud evidence the ISSO team needs to obtain and maintain ATOs.

Key Responsibilities

• Engineer, operate, and maintain the Wiz platform for cloud-based consular systems: account/subscription onboarding, asset grouping and tagging per CA configuration standards, policy tuning, integrations, and dashboards.
• Support agent deployment, vulnerability and compliance scanning, data ingest and sharing, pipeline, and other integration efforts for cloud workloads.
• Apply Department and CA cloud-security and zero-trust overlays; identify and document controls inherited from CSPs and DT enterprise services in each system's Inherited Controls Matrix and SSP (RMF Step 2).
• Support cryptographic key management and encryption key lifecycle activities for cloud and hybrid systems.
• Develop and maintain cloud architecture, network, and data-flow diagrams and evidence for System Boundary & Data Flow Packages and the Evidence Index (RMF Steps 1 and 3).
• Review cloud vulnerability and compliance scan results within 5 business days of scan completion; drive critical and high findings to closure within Department and BOD timelines; provide closure evidence to ISSOs for POA&M management (RMF Step 6).
• Perform Security Impact Analysis on cloud infrastructure and configuration changes submitted through CA change management; participate in CCB/ECM.
• Demonstrate cloud control implementations during Security Control Review Meetings and provide screenshots, logs, and configuration evidence to the SCA (RMF Step 4).
• Support infrastructure-as-code and container image security checks in DevSecOps pipelines and ensure results are captured as SSP evidence (RMF Step 3).
• Coordinate with cloud system operations teams and CSPs to validate remediation and maintain the accredited security posture of cloud systems.

Required Qualifications

• Eight (8)+ years of cybersecurity or systems engineering experience, including three (3)+ years securing federal workloads in AWS GovCloud, Azure Government, or equivalent.
• Hands-on experience with a CNAPP/CSPM platform (Wiz strongly preferred; Prisma Cloud, Defender for Cloud, or equivalent considered).
• Working knowledge of NIST SP 800-53 Rev. 5 control implementation in cloud environments and FedRAMP inheritance models.
• Active, final SECRET security clearance; U.S. citizenship.
• DoD 8140/8570 IAT Level III or IAM Level II baseline certification (e.g., CISSP, CASP+, CCSP, CISM) or ability to obtain within 6 months.
• Experience producing authorization evidence (diagrams, configuration exports, scan reports) for ISSOs and assessors.

Preferred Qualifications

• CCSP, AWS Certified Security – Specialty, or Azure Security Engineer Associate; Wiz certification.
• Department of State or other federal civilian cloud authorization experience.
• Experience with Terraform/CloudFormation security, Kubernetes/container security, and CI/CD pipeline integration.
• Experience with cryptographic key management services (AWS KMS, Azure Key Vault, HSMs) and FIPS 140-2/140-3 validated modules.

Technical Skills

• Wiz (or comparable CNAPP), AWS/Azure native security services, IAM, logging/monitoring, KMS/Key Vault.
• Tenable integration for hybrid boundaries; STIG/CIS benchmarks for cloud OS and services.
• Infrastructure-as-code (Terraform, CloudFormation, Bicep), containers/Kubernetes, CI/CD tooling.
• NIST SP 800-53 Rev. 5, 800-144/145/210 cloud guidance, FedRAMP, zero-trust architecture (NIST SP 800-207).
• Scripting (Python, PowerShell, Bash) and REST API automation; Visio diagramming.

Education

Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or a related field, or an additional four (4) years of directly relevant experience in lieu of degree.

Remote/Hybrid/On-site and any other relevant work-environment requirement

Remote. Duties are performed remotely; the selected candidate must reside within the National Capital Region (NCR). The Government does not furnish equipment; OneZero provides the laptop and collaboration tools. Position requires an OpenNet account, DoS PIV badge, multifactor authentication, and adherence to DoS SBU/CUI handling requirements. Local travel within the National Capital Region; minimal other travel.

Position Status:

New Position, contingent upon Call Order award

Equal Opportunity Statement

OneZero Solutions LLC is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.

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