• Design, develop, test, and deploy custom middleware solutions, integration proxies, protocol translators, and adapter components that enable legacy applications to authenticate and authorize through the ICAM technical stack when native protocol support is unavailable. • Engineer custom connectors, REST and SOAP APIs, scripts, and integration libraries that facilitate the connection of non-standard applications to Okta IdP and SailPoint IIQ, leveraging existing platform connectors where possible and developing bespoke solutions where they are not. • Analyze legacy application architectures, authentication mechanisms, and data flows to identify integration gaps and design technically sound middleware approaches that bridge proprietary or outdated identity systems with modern SAML, OAuth 2.0, OIDC, and SCIM-based ICAM capabilities. • Develop and maintain reusable integration libraries, sample code repositories, and middleware components that can be leveraged across multiple application enablement efforts to accelerate onboarding velocity and reduce duplicative engineering effort. • Collaborate with migration engineers to support the technical triage of assigned applications, providing middleware feasibility assessments and contributing to the documentation of integration pathways, risk registers, and gap analyses in the Enablement Tracking Database. • Provide technical guidance and engineering support to Application Owners who are undertaking their own integration efforts, including advising on middleware architecture, providing sample code for common integration patterns, and troubleshooting application-side integration failures. • Support the design and implementation of automated provisioning and deprovisioning workflows, including the development of SCIM endpoints, directory synchronization scripts, and lifecycle management hooks for applications that require custom provisioning solutions. • Develop and implement solutions that support the configuration of Role-Based Access Control (RBAC) and Attribute-Based Access Control (ABAC) frameworks within target applications, including the development of attribute mapping logic, claims transformation middleware, and authorization policy enforcement components. • Participate in the engineering and development of self-service and automated enablement pathway tooling, contributing reusable middleware components and integration accelerators that simplify the onboarding process for application owners navigating the enablement pipeline independently. • Conduct rigorous unit testing, integration testing, and security testing of all developed middleware solutions prior to deployment, ensuring solutions are functionally correct, secure, and compliant with applicable DoD standards. • Support the testing program by contributing to test plan development, executing technical integration tests, providing sample code and reusable libraries for UAT events, and assisting with defect diagnosis and resolution for middleware-related integration failures. • Ensure all developed middleware, connectors, scripts, and custom tools comply with applicable supply chain risk management requirements per DFARS 239.73, including vetting all third-party code libraries and dependencies to prevent the introduction of cybersecurity vulnerabilities, malicious code, or unauthorized data exfiltration pathways. • Produce and maintain comprehensive technical documentation for all developed middleware solutions, including architecture diagrams, data flow diagrams, API specifications, deployment guides, and operational runbooks. • Contribute to the development and continuous improvement of middleware engineering standards, coding best practices, reusable component libraries, and integration playbooks that drive consistency and quality across the application portfolio. • Ensure all developed solutions comply with Section 508 accessibility standards and applicable DoD security requirements, including CUI handling, OPSEC, and DFARS 252.204-7012. • Maintain current knowledge of evolving middleware technologies, identity integration patterns, and DoD Zero Trust requirements, proactively applying this knowledge to improve the quality and capability of developed solutions.

• Serve as the primary technical SME for the Okta Identity Provider (IdP) platform, including the administration, configuration, and ongoing optimization of Okta Universal Directory, SSO integrations, MFA policies, application integrations, and identity federation services. • Serve as the primary technical SME for SailPoint IdentityIQ (IIQ), including the administration, configuration, and ongoing optimization of identity governance workflows, automated provisioning and deprovisioning, entitlement management, access certification campaigns, and Segregation of Duties (SOD) enforcement. • Design, configure, and deploy application integrations with the Okta IdP using industry-standard protocols including SAML, OAuth 2.0, OIDC, and SCIM. • Design, configure, and deploy application integrations with SailPoint IIQ, including the setup of application connectors, automated provisioning workflows, role and entitlement models, access request processes, and audit reporting capabilities. • Engineer and develop custom connectors, scripts, APIs, and middleware solutions to facilitate the integration of legacy applications that cannot natively support modern identity protocols or standard SailPoint/Okta connectors. • Develop, implement, and sustain the identity protocol connectors and APIs that application owners will use to connect their systems to the ICAM technical stack. • Provide deep technical guidance and platform-specific expertise to migration engineers and application owners throughout the enablement lifecycle. • Support the configuration and management of alternative credential solutions and non-PKI based authentication mechanisms. • Administer and maintain Okta Universal Directory as the Authoritative Directory Aggregator. • Implement and enforce access control models including Role-Based Access Control (RBAC) and Attribute-Based Access Control (ABAC) configurations. • Support the establishment and ongoing maintenance of Single Sign-On (SSO) integrations and Active Directory connections. • Monitor platform health, performance, and security across the Okta and SailPoint environments. • Contribute to the development and maintenance of platform runbooks, integration guides, and standard operating procedures. • Support the testing program by developing integration test cases and executing platform-level testing. • Ensure all platform configurations comply with applicable DoD security requirements. • Vet all third-party connectors, scripts, code libraries, and enhancements integrated into the ICAM environment. • Maintain current knowledge of Okta and SailPoint platform updates, new features, and evolving identity standards.

Role Description Core4ce is seeking a Senior Modeling and Simulation (M&S) Engineer to support the Integrated Healthcare Transformation (IHT) initiative within the Veterans Health Administration (VHA). This role is responsible for the design, development, and execution of complex, multi-system simulations that model healthcare workflows, system architectures, and technical infrastructures. The Senior Engineer will work closely with stakeholders to define simulation goals, identify critical variables, and produce data-driven insights that inform technical decisions and optimize healthcare delivery systems. - Lead the coordination with government customers and stakeholders to identify model requirements, simulation objectives, and key performance variables. - Design, develop, and execute complex, multi-system simulations to evaluate the performance, reliability, and scalability of healthcare technology solutions. - Construct custom simulations tailored to specific customer specifications and operational scenarios. - Perform software modeling and device characterization to ensure accurate representation of system components within simulated environments. - Develop both "hard" (hardware-in-the-loop) and "soft" (purely software/mathematical) models to support diverse testing requirements. - Conduct parametric testing and implement measurement automation to increase the efficiency and accuracy of simulation cycles. - Analyze simulation data to identify system bottlenecks, vulnerabilities, and potential areas for optimization. - Document and report on test results, providing clear, actionable insights to technical users and program management. - Establish simulation frameworks that support the validation of interoperability and data exchange standards across disparate healthcare systems. - Provide technical expertise in the selection of M&S tools, languages, and methodologies appropriate for large-scale enterprise transformation. - Collaborate with system architects and engineers to integrate modeling and simulation into the broader engineering and software development lifecycles. - Manage the lifecycle of simulation assets, ensuring models are maintained, version-controlled, and updated as system requirements evolve. This position is designed to be flexible, with responsibilities evolving to meet business needs and enable individual growth. Qualifications - Must be able to obtain and maintain a Public Trust clearance for this role. - Bachelor’s degree in Engineering, Computer Science, Mathematics, Physics, or a related technical field. - Minimum of 10 years of professional experience in modeling and simulation engineering. - Experience supporting the Veterans Health Administration (VHA), Department of Veterans Affairs (VA), or Department of Defense (DoD) in a modeling and simulation capacity. - Extensive experience in model design and execution, specifically involving complex, multi-system environments. - Proven track record of developing software modeling, device characterization, and hard/soft modeling solutions. - Strong experience in parametric testing and the implementation of measurement automation scripts/tools. - Demonstrated ability to coordinate directly with customers to translate business needs into technical simulation requirements and goals. - Proficiency in simulation languages and tools (e.g., MATLAB/Simulink, AnyLogic, Arena, OPNET, or similar enterprise-grade M&S software). - Strong technical writing skills with experience documenting test plans, simulation architectures, and final analytical reports. - Excellent problem-solving skills and the ability to visualize complex system interactions. Preferred Qualifications - Experience modeling clinical workflows, patient flow, or healthcare information technology (HIT) infrastructures. - Knowledge of healthcare data standards (HL7, FHIR) and their application within simulated data exchanges. - Experience working within an Agile or SAFe environment, providing simulation support for incremental feature development. - Familiarity with cloud-based simulation environments and high-performance computing (HPC) resources. Benefits - 401(k) with 100% company match on the first 6% deferred, with immediate vesting. - Comprehensive medical, dental, and vision coverage—employee portion paid 100% by Core4ce. - Unlimited access to training and certifications, with no pre-set cap on eligible professional development. - Tuition assistance for job-related degrees and courses. - Paid parental leave, PTO that grows with tenure, and generous holiday schedules. - The Forge gives every employee the chance to propose bold innovations and help bring them to life with internal backing.

• Owning the creation, implementation, and testing of the facility configuration, including all controls strategies, cause and effects, I/O lists, user permissions, and hardware lists. • Leading the completion of customer service tickets for various parts of the ATLAS Control System. • Performing QA Testing with Product/Tech Teams to make sure systems are working properly and able to identify issues with potential solutions. • Create and error check I/O lists, including ensuring wires are landed properly and I/O points are correctly named and marked. • Assist in troubleshooting electrical panels and electrical signals. • Discovering discrepancies during testing and working with the controls team to update the control strategy. • Learn and use CK’s internal control language to write, document, test, and help deploy control strategies including: • Safety checks and responses; • Finite state machines at the equipment level; • Process control integrating equipment level control. • Monitor, characterize, and improve performance of deployed controls: Setpoint tracking; Tuning; Response times; Response characteristics. • Assist in advanced process control and scheduling. • Contribute to internal control language and software platform feature requests and provide feedback, bug reports, and recommendations to the software team. • Conduct system evaluation and make appropriate recommendations to repair the control system as needed. • Has the ability to understand our customer and possesses the passion and drive that the CK team has for the success of Atlas. • Assist in development of ATLAS technical training for facility maintenance teams that covers basic troubleshooting, hardware replacement and manual operation of systems in the event of critical failure.