Senior Platform Engineer - w/active Top Secret clearance

LMI Consulting, LLC; Washington (District of Columbia); On-site; USD 125,000 - 220,000; Full time

Job summary

LMI Consulting, LLC 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 hosting with secure remote connectivity and CDS integration.

Based in the Washington, DC area with travel of 25–50%, you will work with architects, cybersecurity specialists, and SMEs to evaluate platforms, develop designs,

Qualifications

• Bachelor's degree in Computer Science, Information Technology, Engineering or related discipline with 10+ years of platform engineering/architecture experience.
• Experience designing enterprise platforms across hybrid cloud, on-premises, and classified environments for DoD/IC.
• Strong knowledge of cloud infrastructure (AWS GovCloud/Azure Gov) and multiple cloud platforms.
• Experience with virtualization, containerization, networking, storage, VPNs, and systems integration.
• Understanding of CDS, security requirements, accreditation (NIST RMF).
• Active TS/SCI security clearance.

Responsibilities

• Collaborate with customers and stakeholders to identify platform requirements and translate mission objectives into technical solutions.
• Design and guide secure, scalable on‑premises and hybrid cloud platform architectures.
• Evaluate CDS options and coordinate integration with cybersecurity and engineering teams.
• Develop architectural designs, implementation plans, and engineering recommendations for customer requirements.
• Incorporate security controls and documentation, and support transition to operations.

Skills

Hybrid cloud design

Platform engineering

Security compliance (RMF/NIST)

Cross-domain solutions (CDS)

VPN & secure networking

VMware/Kubernetes/OpenShift

Education

Bachelor's degree in Computer Science, Information Technology, Engineering

Tools

VMware

Kubernetes

OpenShift

Terraform

Ansible

Job description

Senior Platform Engineer - w/active Top Secret clearance

Job Locations

US-DC-Washington, DC

Overview

LMI is seeking an experienced Senior Platform Engineer to lead the design and integration of hybrid cloud and on-premises computing platforms supporting federal customers and classified environments. This role focuses on on-premises cloud infrastructure for compute, storage and application hosting, with secure remote connectivity through external cloud services as permitted, by customer security, authorization, and cross-domain solutions (CDS), and developing scalable, secure infrastructure solutions that support customer mission requirements. The Senior Platform Engineer will provide technical expertise across cloud computing, virtualization, containerization, enterprise infrastructure, and platform integration to enable secure and reliable enterprise capabilities. Specifically- designing on-prem cloud infrastructure/platform for compute, storage and systems/apps; transport through external cloud services for remote connectivity.

Location: This position is based in the Washington, DC metro area, with travel to program locations.

Travel: This position requires approximately 25-50% travel to support activities across multiple program locations.

The Senior Platform Engineer will serve as a senior technical authority for computing platform design and integration, working closely with technical architects, systems engineers, cybersecurity specialists, networking engineers, and other subject matter experts (SMEs) to develop comprehensive technical solutions. Key areas of responsibility include evaluating platform technologies, developing infrastructure designs, coordinating cross-domain (CDS), and technical solution recommendations, integrating with designated specialists, and incorporating security configurations and controls appropriate for classified computing environments. This individual will translate customer requirements into practical platform designs, and present technical recommendations to program leadership and customer stakeholders.

This position combines technical leadership, platform engineering, and customer engagement, requiring an individual capable of evaluating complex enterprise environments and developing practical, secure, and scalable platform solutions. The Senior Platform Engineer will guide platform implementation and validation, support technical planning, identify engineering resource requirements, and assist in recruiting and building project teams, and serve as a senior technical advisor throughout solution implementation. Success in this role requires broad enterprise architecture expertise, deep knowledge of cloud and infrastructure technologies, strong technical communication skills, and the ability to translate complex mission requirements into integrated, operationally sustainable solutions.

LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.

Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, homeland, healthcare, and intelligence sectors-helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.

Responsibilities

• Platform Requirements Discovery & Analysis: 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.
• Enterprise Platform Architecture & Solution: 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 supporting customer mission requirements.
• Cross-Domain Solutions Evaluation & Integration: 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 SMEs. Support solution evaluation and integration within customer authorization requirements.
• Technical Solution Development & Customer Engagement: Develop architectural designs and diagrams, implementation plans, technical solution concepts, and engineering recommendations in response to customer requirements. Assess technical feasibility and integration, and document solution alternatives, and present recommendations to program leadership and customer stakeholders.
• Platform Security, Validation & Documentation: Incorporate applicable security controls, configuration standards, and authorization requirements into platform designs. Guide integration testing, configuration validation, and transition to operations. Develop technical specifications, and repeatable deployment procedures. Integrate documentation to support solution development and implementation. Plan and implement procedures to support transition to and from continuity of operations.

Qualifications

• Bachelor's degree in Computer Science, Information Technology, Engineering, or related discipline and 10+ 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, constructing secure virtual private networks (VPN), 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, with demonstrated 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.
• Active TS/SCI security clearance.

Preferred Qualifications

• 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.
• TS/SCI clearance with SAP eligibility is required for this position.TS/SCI clearance with SAP eligibility is required for this position. Applicants selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information. LMI will only consider applicants with current security clearances. Please note that only U.S. citizens are eligible for a security clearance.

Target salary range: $125,000.00 - $220,000.00.

Disclaimer: The salary range displayed represents the typical salary range for this position and is not a guarantee of compensation. Individual salaries are determined by various factors including, but not limited to location, internal equity, business considerations, client contract requirements, and candidate qualifications, such as education, experience, skills, and security clearances.

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Job Locations

US-DC-Washington, DC

LMI is an Equal Opportunity Employer. LMI is committed to the fair treatment of all and to our policy of providing applicants and employees with equal employment opportunities. LMI recruits, hires, trains, and promotes people without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, pregnancy, disability, age, protected veteran status, citizenship status, genetic information, or any other characteristic protected by applicable federal, state, or local law. If you are a person with a disability needing assistance with the application process, please contact [e-mail] Colorado Residents: In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.