Resource Management Concepts, Inc. (RMC) provides high-quality, professional services to government and commercial sectors. Our mission is to deliver exceptional management and technology solutions supporting the protection and preservation of the people and environment of the United States of America. RMC is seeking a Denied, Disrupted, Intermittent, and Limited (DDIL) Subject Matter Expert to guide strategy and architecture for secure mission services operating under constrained connectivity. This role focuses on operating at the intersection of tactical communications, systems engineering, and advanced cybersecurity, this role addresses the unique technical challenges of enforcing Zero Trust principles (continuous verification, least privilege access, explicit risk-based attestation) when continuous reachback to enterprise identity providers, policy engines, and cloud trust brokers is degraded or entirely severed. The engineer will establish resilient Policy Enforcement Points (PEP) and decentralized Policy Decision Points (PDP), architect edge-capable Identity, Credential, and Access Management (ICAM) solutions, and optimize cryptographic overhead across constrained tactical data links. We are looking for someone who has designed, evaluated, or fielded systems for these conditions and understands the tradeoffs involved. The SME will help Government stakeholders and engineering teams determine which capabilities must operate locally, what information can be cached or replicated, how long that information remains trustworthy, and how systems reconnect safely. Success requires sound technical judgment grounded in mission needs and experience beyond traditional enterprise availability planning. This position is contingent on contract award and position availability. It is a full-time, on-site role at a Government facility in Charleston, SC.
What You’ll Do:
- Develop DDIL strategies, architectural approaches, and implementation roadmaps for mission applications and supporting security services.
- Work with mission owners to define operational scenarios, connectivity constraints, mission priorities, and acceptable levels of degraded service.
- Translate those scenarios into requirements for local autonomy, bandwidth use, latency, outage duration, synchronization, and recovery.
- Define which identity, authorization, directory, credential, and data protection capabilities must remain available without enterprise reach back.
- Architect local identity and attribute services, including virtual directories and approved caching of security information.
- Establish approaches for cached attribute freshness, credential expiration, revocation awareness, authorization policy updates, and operation when authoritative sources cannot be reached.
- Evaluate access control tradeoffs, including when services should deny access, permit bounded local operation, or require additional safeguards.
- Design synchronization and reconnection approaches that address conflicting updates, stale identity data, audit records, and restoration of enterprise consistency.
- Define dependencies among applications, identity providers, policy services, directories, encryption services, and key management infrastructure.
- Assess data placement, replication, and protection requirements across connected and disconnected environments, including approved cross-domain interfaces.
- Develop architecture diagrams, interface requirements, alternatives analyses, risk assessments, and phased implementation recommendations.
- Support agreements and approval documentation governing the caching and use of identity and security attributes.
- Guide prototypes and demonstrations that validate architectural assumptions under representative network impairments.
- Define measurable acceptance criteria and help teams evaluate mission continuity, security behavior, and recovery during connectivity loss and restoration.
- Coordinate with Government stakeholders, mission partners, security personnel, and engineering teams to resolve architectural gaps and guide implementation.
Requirements
- Active TS/SCI clearance with the ability to obtain a CI polygraph.
- Expertise designing, evaluating, or fielding systems for denied, disrupted, intermittent, or limited connectivity (DDIL).
- Experience architecting disconnected operations, local processing, and eventual synchronization.
- Ability to translate operational constraints into requirements, architecture decisions, and testable performance criteria.
- Knowledge of distributed systems, including consistency, replication, caching, conflict resolution, and recovery.
- Experience managing offline identity, authentication, authorization, and credential dependencies.
- Understanding of risks from stale attributes, delayed revocations, expired credentials, and unavailable policy/key services.
- Ability to assess bandwidth, latency, packet loss, and availability impacts.
- Experience developing technical strategies, architecture documentation, alternatives analyses, and roadmaps.
- Ability to explain tradeoffs and risks to Government leaders and guide multidisciplinary engineering teams.
- Experience deploying local PEPs and lightweight PDPs on edge appliances and dismounted kits.
- Experience with modeling, simulation, and HWIL testing of tactical link degradation, EW effects, and packet loss.
Desired Skills
- Intelligence Community experience.
- Bachelor’s or master’s degree.
- Operational experience in tactical, deployed, expeditionary, or edge environments.
- ICAM, virtual directories, federation, and local identity/attribute caching.
- Attribute-based access control, local enforcement, bounded offline access, and policy synchronization.
- TDF, data tagging, encryption, and disconnected access enforcement.
- Disconnected PKI, certificate validation, credential renewal, and key availability.
- Store-and-forward messaging, durable queues, retries, duplicate handling, and reconnection reconciliation.
- Approved cross-domain and mission-partner identity/data exchanges.
- AWS, Kubernetes, OpenShift, and enterprise-to-edge deployments.
- Network impairment testing, fault injection, and degraded-mode demonstrations.
- Zero Trust controls adapted for intermittent connectivity.
- Software-defined microsegmentation, overlay networks, and dynamic perimeters across tactical transports, including HF/VHF/UHF, SATCOM, mesh, and 5G.
Benefits
At RMC, we're committed to your career growth! RMC differentiates itself from other firms through its investment in our employees. We invest our resources to train, certify, educate, and build our employees. RMC can offer you a great place to work with a small company feel and give you the experience, tuition assistance, and certifications that will take your career to the next level. This also includes a competitive paid vacation package with 11 paid federal holidays. Additionally, we also offer high-quality, low-deductible healthcare plans, pet insurance, and a competitive 401K package. Salary at RMC is determined by various factors, including but not limited to location, a candidate's specific combination of education, knowledge, skills, competencies, and experience, as well as contract-specific requirements.