Platform Security Engineer

Terms: 6 months Contract to HireRole Overview:Apply your expertise in DevSecOps to integrate and enhance security into our software delivery pipelines.This role is instrumental in fortifying mission-critical systems and ensuring compliance with Department of War (DoW) cybersecurity mandates.You will serve as a technical expert, using secure development practices and delivering continuous improvement across our CI/CD ecosystem.You will evolve secure CI/CD pipelines by integrating and automating security tools such as SAST, DAST, SCA, and container scanning to meet DoW requirements and reduce operational risk.You will continuously enhance DevSecOps pipelines by refining vulnerability detection thresholds, tuning scanners, reducing false positives, and optimizing remediation workflows.You will harden infrastructure-as-code (IaC) templates, including Terraform, and enforce policy-as-code across environments.You will conduct risk assessments and contribute to system security plans (SSPs) and continuous ATO efforts.You’ll collaborate with development, operations, and security teams to support secure software delivery.You’ll monitor pipeline activity for anomalies and assist in responding to security incidents.You will champion zero trust principles and drive adoption across the SDLC.Qualifications:5+ years of experience in cybersecurity engineering, including with DevSecOps in federal or defense environments employing IaC/CaC, CI/CD, and SDLC concepts3+ years of experience in software engineering using Python, Typescript, or Bash and automation frameworks2+ years of experience implementing cybersecurity solutions in AWS cloud and container orchestration such as KubernetesExperience with AI software development, Claude Code, Codex, or PiExperience using Agile and Change Management methodologiesKnowledge of best practice cybersecurity and threat-based cybersecurity frameworks, including AI/ML security best practicesKnowledge of?NIST SP 800-53 controls, RMF compliance, eMASS, STIG Manager, STIG Viewer, and SCAP toolsAbility to obtain a Secret clearanceHS diploma or GEDNice to Have Skills:Experience reviewing code samples and applying?whitelisting or exemption processesExperience developing Zero Trust security solutions for DevSecOps pipelinesExperience evaluating security tools and assessing fit for inclusion in Development or Operational environmentsKnowledge of GRC engineering practices, including policy-as-code implementation, automated compliance validation, continuous control monitoring, security control mapping such as NIST 800-53, RMF, or CIS, risk assessment automation, POA&M management, audit evidence collection, compliance reporting, and integration of GRC requirements into CI/CD and DevSecOps workflowsPossession of excellent verbal, technical writing, and documentation skillsSecret clearanceBachelor’s degree in Cybersecurity, Computer Science, or a related fieldSecurity+, AWS Solutions Architect, AWS Security, or CISSP CertificationsAbout Seneca Resources:At Seneca Resources, we are more than just a staffing and consulting firm—we are a trusted career partner. With offices across the U.S. and clients ranging from Fortune 500 organizations to government agencies, we connect professionals with opportunities that drive meaningful impact and support long-term career growth.When you join Seneca, you gain a team committed to your success. We offer competitive compensation, comprehensive health, dental, and vision coverage, 401(k) plans, and continuous support throughout your assignment. Our recruiters and account managers invest in understanding your goals and placing you in roles aligned with your talents and ambitions.Seneca Resources is proud to be an Equal Opportunity Employer, dedicated to building a diverse and inclusive workplace where all qualified applicants are encouraged to apply.