SAP NS2 Senior Linux & Java Systems...

This position requires access to customer data; Must be a U.S. citizen. SAP NS2 does not offer Visa sponsorship for this role. All internals must have manager's approval to transfer., We are seeking a Senior Linux & Java Systems Engineer to provide technical leadership and hands-on engineering support for secure, mission-critical enterprise systems operating in classified environments. This role requires deep expertise in Linux system administration, Java-based application support, middleware configuration, security hardening, and database integration.

The ideal candidate will have extensive experience supporting full-system lifecycle operations, including installation, configuration, automation, security compliance, testing, documentation, and cross-team coordination within secure government or defense environments.

This position requires an active TS/SCI poly clearance . Must be able to work on site at Bolling periodically.

Key Responsibilities

• Serve as technical lead for secure Linux-based enterprise application environments.

• Install, configure, secure, and maintain Red Hat Enterprise Linux (RHEL) systems.

• Engineer and support Java-based applications running on middleware platforms (e.g., JBoss/WildFly).

• Implement and maintain SSL/TLS, X.509 certificates, encryption, and authentication integrations.

• Perform firewall hardening, system auditing, and security compliance support.

• Support database integration and replication environments (e.g., relational databases such as SAP ASE or similar platforms).

• Develop and maintain shell scripts and automation tools for deployment and operations.

• Support AWS-based infrastructure deployments and virtualized environments (VMware).

• Implement and maintain logging frameworks (e.g., Log4j), monitoring, and troubleshooting processes.

• Develop and execute automated testing and regression test suites.

• Maintain version control processes using Git and support agile tracking tools (e.g., Jira).

• Author and maintain installation guides, administrative documentation, and system security documentation.

• Support accreditation and security compliance documentation (e.g., ICD 503 or equivalent frameworks).

• Collaborate with cross-functional engineering and security teams to continuously improve system reliability and security posture.

• Active TS/SCI clearance with CI Polygraph (required).

• Bachelor's degree and 19 years of relevant experience , OR

• Master's degree and 17 years of relevant experience , OR

• PhD and 15 years of relevant experience .

• Extensive experience administering Red Hat Enterprise Linux (RHEL 7/8 ).

• Strong Java development and support experience.

• Experience with application servers such as JBoss or WildFly.

• Experience implementing SSL/TLS, PKI, and certificate-based authentication.

• Experience with database integration and replication technologies.

• Proficiency in shell scripting and Linux service management.

• Experience supporting AWS-based environments.

• Experience with Git and structured software lifecycle processes.

• Strong technical documentation skills.

Preferred Qualifications

• CompTIA Security (or equivalent DoD 8570/8140 compliant certification).

• Experience supporting secure or classified environments.

• Experience with automated testing frameworks and build tools (e.g., Maven, ANT).

• Experience with XML technologies (XSD, XSLT), REST APIs, and JSON.

• Experience with system auditing and file integrity tools.

• Familiarity with DevOps and CI/CD practices.

Technical Environment

• Red Hat Enterprise Linux (RHEL)

• Java, JavaScript

• JBoss / WildFly

• AWS & VMware

• Git / Jira

• SSL/TLS, PKI, X.509

• Relational databases

• Maven / ANT

• Shell scripting

Key Competencies

• Technical leadership

• Secure systems engineering

• Cross-domain and secure environment experience

• Automation mindset

• Strong written documentation skills

• Continuous process improvement

SAP (Herndon, VA) We help the world run better At SAP, we keep it simple: you bring your best to us, and we'll bring out the best in you. We're builders touching over 20 industries and 80% of global commerce, and we need your unique talents to help shape what's next. The work is challenging - but it matters. You'll find a place where you can be yourself, prioritize your wellbeing, and truly belong. What's in it for you? Constant learning, skill growth, great benefits, and a team that wants you to grow and succeed., SAP is the global market leader for business software and related services. SAP National Security Services Inc.® (SAP NS2®) is an independent U.S. subsidiary of SAP. At SAP NS2, we leverage best-in-breed technologies engineered by SAP to protect the lives, assets and information of Americans _._ We offer SAP solutions with specialized levels of security and support to meet the requirements of U.S. national security and critical infrastructure customers., SAP innovations help more than four hundred thousand customers worldwide work together more efficiently and use business insight more effectively. Originally known for leadership in enterprise resource planning (ERP) software, SAP has evolved to become a market leader in end-to-end business application software and related services for database, analytics, intelligent technologies, and experience management. As a cloud company with two hundred million users and more than one hundred thousand employees worldwide, we are purpose-driven and future-focused, with a highly collaborative team ethic and commitment to personal development. Whether connecting global industries, people, or platforms, we help ensure every challenge gets the solution it deserves. At SAP, you can bring out your best. We win with inclusion SAP's culture of inclusion, focus on health and well-being, and flexible working models help ensure that everyone - regardless of background - feels included and can run at their best. At SAP, we believe we are made stronger by the unique capabilities and qualities that each person brings to our company, and we invest in our employees to inspire confidence and help everyone realize their full potential. We ultimately believe in unleashing all talent and creating a better world.