Systems Architecture and AI/ML Engineering
Lex Rosa provides technical consulting for organizations that need complex systems built correctly the first time.
We specialize in AI/ML systems, enterprise architecture, and mission-critical deployments where failure has real consequences.
Our work replaces trial-and-error development with proven approaches based on decades of production experience.
What We Do
Lex Rosa delivers technical expertise across several domains:
AI/ML Systems
Production deployment of large language models, retrieval-augmented generation, and knowledge graph integration. We build systems that work in regulated and cleared environments, with emphasis on reliability and auditability over experimental approaches.
Typical engagements include RAG architecture design, graph-enhanced retrieval systems, prompt engineering for production use, and integration with existing enterprise infrastructure.
Enterprise Systems Architecture
Design and implementation of build/release pipelines, continuous integration systems, and deployment automation. We have extensive experience with systems that must pass regulatory audit, operate in classified environments, or meet stringent compliance requirements.
Our approach emphasizes reproducibility, traceability, and provable correctness rather than documentation and policy.
Technical Problem Solving
Organizations engage us when internal teams are stuck, when timelines are compressed, or when the problem requires expertise that doesn’t exist in-house. We work independently, deliver quickly, and transfer knowledge effectively.
We’ve eliminated recurring compliance violations, stabilized failing systems, built replacement infrastructure when vendors couldn’t deliver, and designed architectures that survived regulatory scrutiny.
Research and Development
Novel approaches to machine learning, recommender systems, and knowledge representation. Published work in combinatorial mathematics, content personalization, and AI system design.
We bring research perspective to practical problems and translate academic approaches into working systems.
Experience
Lex Rosa principals have designed and delivered systems for financial institutions, healthcare organizations, government contractors, and enterprise technology companies.
Representative work includes:
- Production AI/ML systems with clearance requirements and regulatory oversight
- Enterprise-wide build and deployment infrastructure achieving consistent audit compliance
- Recommender systems and personalized content delivery architectures
- CI/CD pipelines supporting hundreds of developers across multiple organizations
- Recovery of failed projects and stabilization of critical infrastructure
- Data systems preventing millions in fraud losses and regulatory exposure
We work at the intersection of research and production, bringing deep technical knowledge to problems that require both innovation and reliability.
Engagement Model
We work in focused, high-accountability engagements:
Assessment — Independent technical evaluation of current systems, architecture review, or problem diagnosis
Architecture — Design of AI/ML systems, infrastructure, or technical solutions for complex requirements
Implementation — Hands-on development, deployment, and delivery of working systems
Advisory — Ongoing technical guidance for teams working on challenging problems
Engagements are typically fixed-scope or time-boxed, completed in weeks to months depending on complexity. We deliberately limit concurrent projects to maintain depth and accountability for outcomes.
Technical Capabilities
AI/ML: Production LLM deployment, RAG architectures, graph-enhanced retrieval, NLP pipelines, collaborative filtering, user modeling
Infrastructure: Kubernetes orchestration, CI/CD automation, build/release systems, cloud and on-premise deployment
Languages: Python, Java, Scala, SQL, shell scripting, infrastructure as code
Platforms: Linux, GCP, AWS, on-premise data centers, classified environments
Domains: Financial services, healthcare, government/defense, enterprise software
We select tools pragmatically based on requirements rather than preferences. Architecture and outcomes are the deliverables, not technology choices.
Who Should Contact Us
You should contact Lex Rosa if:
- You need AI/ML systems built for production use, not experimentation
- Your project has regulatory, security, or compliance requirements
- Internal teams are stuck or timelines are compressed
- You need someone who can work independently and deliver results
- You value technical depth over process compliance
We work with organizations that understand the difference between building systems that work and building systems that satisfy checkboxes.
Cleared Work
Lex Rosa principals hold active TS/SCI clearances and have experience with:
- Classified AI/ML systems and data processing
- ODNI-visible projects and mission-critical deployments
- Secure development practices and classified infrastructure
- Working within government security frameworks and requirements
We understand the unique challenges of cleared work and can operate effectively in restricted environments.
Contact
For inquiries: info@lexrosa.com
We respond to serious inquiries within 48 hours.
About
Lex Rosa exists to build systems that actually work.
We’ve spent decades solving problems that others couldn’t—eliminating compliance violations, building infrastructure from scratch, deploying AI systems in production, and turning failed projects into successful deliveries.
Our approach is simple: understand the real problem, design the right solution, implement it correctly, and prove it works.
We don’t do marketing, we don’t inflate scope, and we don’t make promises we can’t keep. We build things, deliver results, and move on to the next problem.
If you need someone to build a system that works the first time, we should talk.