Principal Engineer, Solutions Architecture

LMI

Principal Engineer leveraging agentic AI to design solutions for complex government programs. Collaborating across teams to meet mission objectives and improve system architectures.

Posted 7/23/2026full-timeRemote • 🇺🇸 United StatesLeadWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in full-stack development, including proficiency in Python and TypeScript, while effectively translating ambiguous requirements into scalable technical designs. Strong ability to collaborate across multidisciplinary teams and ensure compliance with security protocols and government standards.

Highest-signal resume keywords

Full-Stack DevelopmentAgentic AI Tools ProficiencyRESTful API DesignDatabase Management (PostgreSQL, MongoDB)Active Secret Clearance

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Full-Stack DevelopmentPythonTypeScriptRESTful API DesignPostgreSQLMySQLMongoDBGitDevSecOpsCI/CD Processes

Soft Skills

Strong Communication SkillsInfluence SkillsCollaboration

Tools & Technologies

Agentic AI ToolsGitLab

Certifications & Qualifications

Active Secret Clearance

Industry Keywords

Agile EnvironmentsSecurity ProtocolsGovernment StandardsTechnical DesignMultidisciplinary Teams

Tech Stack

Tools & technologies

MongoDBMySQLPostgresPythonSQLTypeScript

About the role

Key responsibilities & impact

Diagnose before you build: Analyze customer requirements and program objectives to uncover the underlying problem, not just the stated request, and design solutions that align with mission needs.
Architect across the stack: Design end-to-end solutions — from data model to API to UI — that are scalable, maintainable, and fit the constraints of large, complex government programs.
Leverage agentic AI as a force multiplier: Use advanced agentic AI tools to rapidly prototype, extend, and integrate new functionality into existing code stacks, compressing the distance between idea and working system.
Drive high-impact, ambiguous problems: Make quick, high-impact contributions to strategically critical projects, often stepping into programs with incomplete requirements and shaping them into a coherent technical plan.
Translate between worlds: Collaborate with development teams, stakeholders, and technical leads to identify pain points in existing systems, propose creative solutions, and build consensus around the right architecture.
Move fluidly across programs: Transition seamlessly between programs, applying technical and design judgment to prioritize the highest-impact initiatives.
Close the loop: Facilitate integrations, resolve technical challenges, and adhere to development timelines within multidisciplinary teams.
Build for the mission, not just the ticket: Ensure compliance with security protocols, government standards, and industry best practices across all projects.
Multiply your impact through documentation: Document technical solutions, design rationale, and architectural decisions for knowledge transfer between teams and programs.
Validate the design, not just the code: Conduct rigorous testing to guarantee performance, scalability, and reliability of updated or newly architected systems.

Requirements

What you’ll need

Active Secret clearance
3–5 years applying full-stack development in a production environment.
Demonstrated solutions mindset: Experience translating ambiguous requirements into a technical design or architecture, not just implementing pre-defined tickets.
Experience with agentic AI coding tools: demonstrated proficiency using tools to enhance existing code stacks at scale.
Proven full-stack development experience: minimum of 3–5 years developing, maintaining, and improving front-end and back-end systems.
Proficient in at least one back-end language (Python preferred) and one front-end framework/tool (TypeScript preferred).
Experience designing and consuming RESTful APIs for integration across systems.
Strong foundational skills across relational (e.g., PostgreSQL, MySQL, SQL Server) and non-relational (e.g., MongoDB) databases.
Comfortable operating in agile environments and collaborating across multidisciplinary teams.
Version control proficiency: Git (GitLab preferred).
Experience with testing, security, DevSecOps, and CI/CD processes.
Strong communication and influence skills: able to pitch a technical solution to both engineers and non-technical stakeholders, and defend the "why" behind an architecture, not just the "how."

Benefits

Comp & perks

Salaried High Fringe/Full-Time