AWS Cloud Security Engineer Job Singapore,IT/Tech

Position: AWS Cloud Security Engineer at Peraton
About Peraton

Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world’s leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace.

The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees solve the most daunting challenges that our customers face. Visit to learn how we’re keeping people around the world safe and secure.

Program Overview

RDG (Risk Decision Group) provides nationwide background investigations compliant with national government standards to include support of continuous vetting for over 110 government agencies.

About

The Role

Peraton is seeking an experienced AWS Cloud Security Engineer to design, build, and operate security controls for a FedRAMP Moderate-authorized AWS cloud infrastructure supporting Peraton's RDG (Risk Decision Group) program. This is a hands-on role with a key part in day-to-day cloud security operations, embedding secure-by-design principles into cloud architecture, and maintaining continuous FedRAMP compliance. The engineer is responsible for implementing security architecture, hardening cloud environments, maintaining continuous compliance monitoring, and supporting Authorization to Operate (ATO) activities.

The ideal candidate has hands-on experience securing AWS environments within a federal compliance framework (FedRAMP, NIST 800-53, NIST 800-171, RMF, or similar). This is a 100% remote position.

Responsibilities

Design and implement security architecture for AWS workloads aligned with FedRAMP Moderate baseline controls
Build and maintain security guardrails using AWS-native services (IAM, Guard Duty, Security Hub, Config, Cloud Trail, KMS, WAF, Macie, Inspector)
Implement and manage Infrastructure as Code security controls (Terraform/Cloud Formation) with policy as code
Support System Security Plans (SSPs), ATO activities, and POA M remediation
Perform continuous monitoring, vulnerability scanning, patch management tracking, and monthly/annual assessment support
Configure and maintain centralized logging, SIEM integration, and audit trail retention per FedRAMP/NIST requirements
Implement least-privilege IAM policies, service control policies (SCPs), and cross-account access controls.
Manage encryption at rest and in transit (KMS, ACM, TLS enforcement) per FIPS
140-2/140-3 requirements where applicable
Respond to security incidents, perform root cause analysis, and support cloud-specific incident response playbooks
Collaborate with Dev Ops/Platform teams to embed security into CI/CD pipelines (Dev Sec Ops )
Maintain documentation for control implementation statements, architecture diagrams, and audit evidence
Support boundary definition and system categorization activities (FIPS
199) as required

Qualifications Required

US citizenship required; ability to obtain and maintain a Top-Secret eligible clearance
Minimum 8 years work experience with BS/BA in computer science, Information Systems, or a related field (or equivalent experience)
5+ years of hands-on AWS engineering experience, with 3+ years specifically in cloud security roles
Demonstrated experience working within a FedRAMP Moderate or FedRAMP High, DoD IL4/IL5, or equivalent federal compliance environment
Experience supporting or maintaining an SSP and RMF processes
Experience with AWS Gov Cloud (US), AWS Commercial, or equivalent…