Information Systems Security Engineer (ISSE) (Onsite)

Date Posted: 2026-06-05 Country: United States of America Location: US-CT-EAST HARTFORD-ETC ~ 400 Main St ~ BLDG ETC Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​ Security Clearance Type: DoD Clearance: Secret Security Clearance Status: Active and existing security clearance required on day 1 At RTX, the world largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Pratt & Whitney is a world leader in the design, manufacture and service of aircraft engines and auxiliary power systems and has been revolutionizing modern flight for over 100 years. Join us and help shape the future of aerospace and defense. What You Will Do: The Information Systems Security Engineer (ISSE) will function as a Subject Matter Expert (SME) for information systems security control methods, mitigations, and tools throughout a systems’ lifecycle in compliance with U.S. Department of War (DoW) security laws, regulations and guidelines.  The ISSE will participate in projects, guide and counsel internal customers, assist in developing and maintaining cross-security enclave processes and standards, and provide training and guidance on tools and methods to other members of the cybersecurity team. Primary Responsibilities: Under the direction of the Enclave Senior Manager serve as an information systems security lead for information technology-related projects supporting the ME portfolio of programs.  Ensure delivery of required RMF artifact elements for new information systems are compiled and provided to the respective ISSM to be included in RMF packages to be submitted for an ATO.  Influence and guide team project teams architecting and designing information systems solutions in the employment of configuration options, processes and tools that align with applicable DoW policies and regulations.  Collaborate with system engineers, developers and system administrators to resolve compliance issues through mitigation and remediation plans. Develop, assess, verify, and manage the implementation of information system security-related tools, measures and controls in compliance with applicable DoW and Corporate policies, standards and procedures.  Periodically review existing systems for opportunities to reduce effort, risk and/or mistake-proof methods and procedures through process improvement. undefined Architects automated technical solutions to enhance internal Continuous Monitoring strategies and improve process workflows. Lead the effort in closing out POA&M items for Enclave information systems that are associated with technology-related control items.  Assist the Enclave Senior Manager in developing and reviewing policies, plans, procedures, and standard work related to information systems security measures and configurations in accordance with applicable DoW policies and regulations tied to the Risk Management Framework (RMF). Assist in overseeing and managing the patch management process and execution across all security enclaves.  Collaborate with peer GSC ISSEs and Corporate equivalents for alignment and sharing of best practices. Partner with other GSC ISSEs in participating in and supporting the threat intelligence program.  Collaborate with GSC ISSE peers, corporate equivalents and the Insider Threat Program Security Officer (ITPSO) for alignment and sharing of best practices.  In collaboration with the incident response manager, coordinate and/or perform incident response containment, eradication, and recovery tasks involving classified systems and/or spills of classified data to unauthorized systems. Support the respective security enclaves in information systems security-related inspection preparations as needed. In close collaboration with peer GSC ISSEs, assist in developing and maintaining standards for information security methods and tools.  Work with the Enclave Senior Manager and Associate Direct, GSC Cybersecurity in authoring and maintaining associated training content. Qualifications You Must Have: U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract Active Secret-level U.S. government security clearance Ability to obtain a Top Secret-level clearance Ability to obtain access to Special Access Programs Advanced degree and 3+ years of combined hands-on experience in systems administration/engineering and/or cybersecurity support role for a combination of servers, desktop computers, operating systems, and virtual computing, preferably of information systems supporting classified programs or activities; OR Bachelor’s degree and 5+ years of relevant industry experience; OR Associate’s degree and 7+ years of relevant industry experience. 2+ years hands-on experience in an ISSO, ISSM and/or ISSE role or equivalent. Certifications equivalent to or exceeding DoD 8140 functional and baseline certification requirements such as Security+. Qualifications We Prefer: Expert-level experience administering and maintaining Splunk Enterprise deployments across enterprise networks; including experience developing custom ingestion pipelines, data visualizations, and leveraging scripts to create custom data inputs. Experience leveraging vulnerability scanning solutions like Tenable/Nessus, OpenVAS, ACAS to identify and remediate information system vulnerabilities. Strong experience leveraging scripting languages such