Location: Annapolis Junction, MD (100% on-site)

Clearance: Active TS/SCI with Full Scope Polygraph (within the last 7 years)

About EITR Technologies

EITR Technologies was built by technologists who are still billable today. We know what it means to be on-site and on-contract in the government space, and we built the company we always wished we worked for.

We're small on purpose. You won't be five layers deep in an org chart; you'll work directly with company leadership and senior government stakeholders, and you'll have a real say in our technical direction, tooling, and culture. Good ideas here turn into actual company offerings. We offer strong pay, industry-leading benefits, and a culture with no strings attached: come to our happy hours and game nights if you want, skip them if you don't. We hire adults and treat them like it.

About the Role

We're hiring an Information Systems Security Engineer (ISSE) to design and build security into large high performance computing environments supporting national security missions. The scale of compute, storage, and interconnect in these environments is unusual even by HPC standards, and securing them means engineering solutions where off-the-shelf answers often don't exist.

This is a hands-on engineering role, not a compliance-checking one. You'll shape security architectures from the design phase forward: working secure system and network designs for new capability, engineering cross-domain and enclave solutions, and making sure emerging technologies can move from lab evaluation to mission networks without compromising the security posture. The work involves close collaboration with government security officials, engineers across multiple disciplines, and the OEMs whose gear the program runs, and your design decisions directly shape what gets fielded and how.

What You'll Do

• Design and engineer security architectures for classified HPC systems, enclave environments, and their supporting infrastructure, from concept through fielding

• Build security into system and network designs up front: authentication and authorization mechanisms, boundary protections, intrusion detection, and secure data flows

• Engineer and support cross-domain solutions and inter-enclave connectivity, working the technical and accreditation details required to move data securely between security domains

• Apply cryptographic solutions appropriately across systems, including data-at-rest and data-in-transit protections aligned with government requirements

• Support certification and accreditation (C&A/A&A) efforts from the engineering side: producing design documentation, implementing security controls under NIST RMF, and working assessment findings to closure

• Conduct risk assessments on proposed designs, system changes, and emerging technologies, and present clear tradeoffs to program and government stakeholders

• Partner with ISSOs and system administrators on configuration management, ensuring security baselines survive upgrades and modernization efforts intact

• Evaluate the security posture of new and emerging compute, storage, and networking technologies in the lab before they reach mission networks, and engineer mitigations where products fall short

Required Qualifications

• Bachelor's degree and 7+ years of experience as an ISSE supporting secure system design, risk management, certification and accreditation, and cybersecurity engineering within classified environments, or 11+ years of relevant experience in lieu of a degree

• Working knowledge of the NIST Risk Management Framework (RMF) and C&A/A&A processes, with hands-on experience implementing security controls in classified environments

• Experience designing or engineering security architectures, enclave environments, and/or cross-domain solutions

• Experience with core security engineering disciplines: cryptography, intrusion detection, authentication/authorization, risk assessment, configuration management, and secure network/system engineering

• DoD 8570 IASAE Level II certification (e.g., CISSP, CASP+ CE, CSSLP) — current, or ability to obtain prior to start

• Active TS/SCI clearance with Full Scope Polygraph completed within the last 7 years

Nice to Have

• Experience securing HPC, Linux, or large-scale storage environments

• Familiarity with parallel file systems, high-speed interconnects, or other HPC-specific infrastructure and their security considerations

• Experience with specific cross-domain solution products and the accreditation processes surrounding them

• Familiarity with FIPS 140-validated cryptographic modules and government crypto requirements

• Experience supporting security evaluations of emerging or pre-production technologies in lab environments

• Scripting or automation experience (Bash, Python) for security tooling, control validation, or evidence collection

Growth

This role is a strong fit for a security engineer who wants to work on systems most security professionals never see. At a company our size, the path from ISSE to security architect, chief engineer, or customer-facing roles is short and based entirely on performance.