Senior Platform Engineer - w/active Top Secret clearance

LMI•Washington DC, WA

2d•Onsite

About The Position

LMI is seeking a Senior Platform Engineer to lead the design and integration of hybrid cloud and on-premises computing platforms for federal customers and classified environments. The role focuses on on-premises cloud infrastructure for compute, storage, and application hosting, with secure remote connectivity through external cloud services where permitted by customer security requirements, authorization, and cross-domain solutions (CDS). The engineer will provide expertise across cloud computing, virtualization, containerization, enterprise infrastructure, and platform integration to develop secure, scalable, and reliable solutions that support customer missions. As a senior technical authority, the engineer will collaborate with technical architects, systems engineers, cybersecurity specialists, networking engineers, and other subject matter experts. The role translates customer requirements into practical platform designs, evaluates technologies, coordinates CDS considerations, develops technical recommendations, and presents them to program leadership and customer stakeholders. It also guides platform implementation and validation, supports technical planning, identifies engineering resource needs, assists with recruiting and building project teams, and advises throughout implementation. The position is based in the Washington, DC metro area and requires approximately 25–50% travel to program locations. Applicants must hold a current TS/SCI clearance; TS/SCI clearance with SAP eligibility is required. Only U.S. citizens are eligible for a security clearance.

Requirements

Bachelor's degree in Computer Science, Information Technology, Engineering, or a related discipline, and 10 or more years of relevant platform engineering, infrastructure, or solution architecture experience; equivalent education and experience may be considered.
Demonstrated experience designing enterprise platforms across hybrid cloud, on-premises, and classified computing environments supporting DoD, Intelligence Community, or other federal customers.
Strong knowledge of cloud infrastructure, including AWS GovCloud and/or Azure Government, with expertise in at least one major cloud platform and familiarity with others.
Experience with enterprise infrastructure technologies, including virtualization, containerization, networking, storage, secure VPN construction, and systems integration.
Understanding of accredited cross-domain solutions (CDS), including evaluation, selection, integration, and security considerations.
Working knowledge of federal security requirements, configuration controls, and accreditation frameworks, including NIST SP 800-53 and the Risk Management Framework (RMF).
Experience developing technical architectures, solution recommendations, and engineering documentation, and the ability to advise technical teams and communicate solutions to customers and program leadership.
Experience using infrastructure automation and configuration management to support repeatable deployment and maintenance.
Current active TS/SCI security clearance; TS/SCI clearance with SAP eligibility is required.
Must be a U.S. citizen to be eligible for a security clearance.

Nice To Haves

Advanced experience designing enterprise architectures for classified DoD or Intelligence Community environments, including integration of accredited cross-domain solutions and computing platforms.
Expertise with enterprise virtualization, container orchestration, and infrastructure automation technologies, including VMware, Kubernetes, Red Hat OpenShift, or comparable platforms.
Experience leading technical solution development, architecture assessments, trade studies, and technical briefings supporting federal customer requirements and proposals.
Relevant professional certifications, such as AWS Certified Solutions Architect – Professional, Microsoft Certified: Azure Solutions Architect Expert, CISSP, or CCSP.

Responsibilities

Collaborate with customers and technical stakeholders to identify platform requirements, assess existing infrastructure, and translate mission objectives into technical solutions.
Evaluate availability, capacity, remote access, operational constraints, integration dependencies, security requirements, and technical risks.
Design and guide implementation of secure, scalable computing, hybrid cloud, and on-premises platform architectures incorporating compute, storage, virtualization, containerization, and infrastructure automation.
Prioritize on-premises cloud infrastructure and define interfaces with external cloud services for approved remote connectivity.
Evaluate technology alternatives and solutions that support customer mission requirements.
Evaluate and recommend accredited cross-domain solutions (CDS) to enable information exchange across classified environments.
Assess platform interfaces, integration requirements, security boundaries, and technical dependencies for CDS integration in coordination with cybersecurity, networking, and engineering specialists.
Support solution evaluation and integration within customer authorization requirements.
Develop architectural designs and diagrams, implementation plans, technical solution concepts, and engineering recommendations in response to customer requirements.
Assess technical feasibility and integration, document solution alternatives, and present recommendations to program leadership and customer stakeholders.
Incorporate applicable security controls, configuration standards, and authorization requirements into platform designs.
Guide integration testing, configuration validation, and transition to operations.
Develop technical specifications, repeatable deployment procedures, and documentation supporting solution development and implementation.
Plan and implement procedures to support transition to and from continuity of operations.
Support technical planning, identify engineering resource requirements, assist with recruiting and building project teams, and serve as a senior technical advisor throughout solution implementation.