Test Engineer Principal (Security)

TEST ENGINEER PRINCIPAL (SECURITY)

Advance how our customers operate while you advance your career. Join GDIT a Test Engineer Principal and build an impactful career in enterprise IT, collaborating with people who are driven and resourceful like you

MEANINGFUL WORK AND PERSONAL IMPACT

GDIT is seeking a senior-level Test Engineer to support the New York State Department of Health Medicaid Management Information System (MMIS) program. This role is a high-impact, senior individual contributor position within the Security Architecture team. You will design and execute security test plans across a diverse technical environment spanning a mixed estate: bespoke web applications, REST/SOAP APIs, batch and integration services, file-based interfaces, COTS systems, multi-account AWS, and Azure back-office infrastructure. You will break systems before adversaries can, automate repeatable testing processes, and influence secure engineering practices across eMedNY.

In this role, your responsibilities will be:

Security Testing Architecture

• Select and evaluate security testing tools aligned to technology stack, scope, and risk.
• Document tool selection requirements, assumptions and constraints to justify procurement and retain selection rationale.  
• Configure, validate, and maintain testing tools, ensuring safe and repeatable execution.
• Coordinate tool use access with developers, testers, and eMedNY Program Security.

Application Security Testing

• Review proposed bespoke application changes and architectural updates to determine security test scope.
• Develop comprehensive security test plans and test cases for bespoke applications and COTS components.
• Design test cases that thoroughly document prerequisites, expected results, evidence, and success criteria including authentication, authorization, input handling, data protection, and error handling.
• Coordinate bespoke applications test plans and test cases with development and functional testing teams.
• Execute test plans, producing detailed results with findings, impact, severity, and remediation guidance.
• Perform manual testing beyond automated scanning, including: business logic abuse, access control bypass, injection, session handling, data exposure
• Review source code and IaC for security defects; pair with engineers to reproduce, disposition and/or fix findings.
• Integrate SAST, DAST, SCA, and secrets scanning into GitLab CI pipelines; tune rules to keep signal high and noise low.

Cloud and infrastructure testing

• Assist in developing and executing AWS security test plans, analyzing IAM, VPC segmentation, exposed services, encryption, login, and privilege escalation paths.
• Validate AWS Security Hub and Config outputs; identify gaps between theoretical compliance and real posture.
• Test container, serverless, and managed-service configurations, including Bedrock and API gateway deployments.
• Conduct adversary-emulation exercises and document detection coverage.

Reporting and remediation

• Collaborate with development and architecture teams to triage and address findings.
• Track remediation to closure, perform re-tests and report security posture trends.
• Partner with Program Security to integrate results into Vulnerability Management lifecycle.
• Prepare regular, periodic reports on dispositions and remediation progress of findings.
• Write clear, actionable findings with reproducible steps, and consistent impact and severity ratings.

WHAT YOU’LL NEED TO SUCCEED

Bring your technology expertise and drive for innovation to GDIT. The Ethical Hacker/Penetration Tester Sr Principal must have:

• Education: Bachelor’s in Computer Science, information security, or a related field; or equivalent experience.

• Experience: 8+ years information security, with at least 5 years of hands-on application testing or offensive security work.

• Technical Skills:

• Demonstrated depth in web application and API testing.
• Experience testing systems under FedRAMP, HIPAA, or other regulated frameworks.
• Working knowledge of NIST 800-53 control families and evidence mapping.
• Proficiency in Python or similar scripting language for tooling and automation.
• Experience with security tools: Burp Suite Pro, OWASP ZAP, Nmap, Metasploit, Nessus/ Qualys, sqlmap; and cloud-specific tools:  Prowler, ScoutSuite, Pacu, CloudSploit.
• Experience running security tooling in CI/CD (GitLab or equivalent).

·         Role Requirements:

• Convert requirements and risks into actionable test cases and acceptance criteria.
• Healthcare payer, Medicaid, or other public-sector program experience.
• Obtain/maintain required NY State background checks.
  • Strong technical writing, and ability to communicate with non-technical stakeholders
  • Effective as an individual contributor, influencing through architecture guidance, reference implementations, and mentorship

• ·         Preferred Requirements:
  • OSCP, OSWE, GPEN, GWAPT, GCPN, or AWS Security Specialty.
  • Hands-on AWS security testing experience: IAM, VPC networking, KMS, CloudTrail, Security Hub, Config, and common misconfiguration classes.
  • Testing mainframe-adjacent systems: (MQ, file transfer, batch, terminal emulation).
  • LLM-based application testing: (prompt injection, agent misuse, data leakage).
  • Familiarity with Java, COBOL, or both at a read-the-code level.
  • Purple-team or detection-engineering experience with SIEM and cloud-native logging

·         Location: Hybrid if local to the Albany, NY area or 100% Remote

GDIT IS YOUR PLACE At GDIT,

the mission is our purpose, and our people are at the center of everything we do. ● Growth: AI-powered career tool that identifies career steps and learning opportunities

● Support: An internal mobility team focused on helping you achieve your career goals

● Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off

● Flexibility: Full-flex work week to own your priorities at work and at home

● Community: Award-winning culture of innovation and a military-friendly workplace

OWN YOUR OPPORTUNITY

Explore a career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your ambition to deliver your best work.