Appian Solution Architect - Clearance Required

Appian Solution Architect
- Clearance Required Job Location s

US-Remote

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, healthcare, and energy 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.

LMI is seeking a senior-level Solution Architect to support Army Acquisition, Training, and Readiness (AT&R) and provide technical leadership for the sustainment and enhancement of the Army Contract Writing System (ACWS). ACWS is built on the Appian Platform and supports the Army Contracting Enterprise. The Solution Architect will lead end-to-end solution architecture, integration, and technical decision-making across application, cloud, data, cybersecurity, Dev Sec Ops , testing, and user-facing capabilities.

The successful candidate will bridge strategic architecture and Agile delivery, guide technical teams through architecture runway and solution refinement, and ensure ACWS capabilities remain secure, scalable, interoperable, and maintainable in a mission-critical Army environment.

• Define and maintain the end-to-end solution architecture for ACWS, aligning technical direction with program objectives, user needs, and delivery priorities.
• Lead solution-level architecture across the Appian application stack, cloud infrastructure, cybersecurity, data architecture, integrations, test automation, and Dev Sec Ops  capabilities.
• Serve as a senior technical design authority and primary architectural interface for government stakeholders, program leadership, and delivery teams.
• Ensure seamless integration among ACWS application components, shared services, data sources, interfaces, security services, and supporting infrastructure.
• Guide architectural runway, technical feasibility assessments, nonfunctional requirements, and architecture-related enablers needed for continuous delivery.
• Participate in Agile and SAFe ceremonies, including PI Planning, architecture syncs, solution refinement, system demos, and retrospectives, as appropriate to the program.
• Create and maintain architecture artifacts and technical documentation consistent with Army and DoD standards and approved program practices.
• Provide guidance on secure cloud deployment, identity and access management, application security, resilience, performance, and scalability.
• Partner with developers, Appian specialists, database administrators, Dev Sec Ops  engineers, information assurance personnel, testers, and functional SMEs to resolve architectural issues and delivery risks.
• Evaluate emerging technologies, Appian capabilities, and architectural patterns and recommend practical improvements to ACWS sustainability, usability, security, and maintainability.
• Prepare and deliver technical briefings, architecture recommendations, and decision materials to program stakeholders and senior leadership.
• Support production troubleshooting and root cause analysis for complex cross-system issues and drive architecture-level corrective actions.

• Bachelor's degree in Computer Science, Systems Engineering, Information Systems, Engineering, or a related technical field; extensive relevant experience may be considered in lieu of a degree.
• 9+ years of experience in enterprise architecture, large-scale system integration, software engineering, or technical leadership of complex systems.
• Experience serving as a Solution Architect or equivalent senior architecture role supporting a Federal Government, DoD, or other mission-critical enterprise system.
• Experience designing integrated solutions spanning application architecture, cloud infrastructure, cybersecurity, data, Dev Sec Ops , and testing.
• Experience working in Agile software development environments and collaborating across multidisciplinary technical and functional teams.
• Strong understanding of architecture principles, integration patterns, scalability, performance,…