Derrick Simpson
Founder & Chief Software Architect, AI
Over 20 years of expertise in Applied AI, software architecture, and transformative technology solutions.
My Mission
I help businesses transform their capabilities through expert consulting in AI solutions, software architecture, and intelligent automation, with a focus on practical, high-value implementations.
My Approach
- Understand: I begin by deeply understanding your business, goals, and challenges.
- Architect: I design comprehensive, scalable solutions tailored to your needs.
- Implement: I deliver high-quality AI solutions using best practices and industry standards.
- Optimize: I continuously refine and improve solutions for maximum value and efficiency.
My Values
- Innovation: Delivering cutting-edge solutions for real business value.
- Excellence: Highest standards in code quality, communication, and AI implementation.
- Collaboration: Working as an extension of your team for success and knowledge transfer.
- Integrity: Ethical, responsible AI practices always in your best interest.
Why Choose Me?
- AI & Software Expertise: 20+ years of engineering and architecture, deep specialization in Applied AI and LLMs.
- Tailored AI Solutions: Custom AI solutions for real, practical business needs.
- Forward-Thinking: Always at the forefront of emerging AI technologies and trends.
- Proven Results: Successful delivery across diverse industries and challenges.
My Services
AI & Machine Learning
- AI Strategy & Implementation
- AI Agents & Automation
- LLM Implementation & Integration
- Private LLM Deployment
- Enterprise API Integration
- LLM Cost Management & Optimization
- RAG, HiRAG, Graph-RAG
- Prompt Engineering & Evaluation
Software Architecture
- System Design & Architecture
- AI-Powered Application Design
- API Design & Development
- Legacy Modernization with AI
- Scalability & Performance Optimization
- Technical Debt Reduction
3D Graphics & Visualization
- 3D Terrain Rendering
- OpenGL Implementation
- 3D Model Loading & Manipulation
- Web-Based 3D Visualization (three.js)
- Interactive 3D User Interfaces
- Custom Visualization Solutions
Professional Experience
Stem, Inc.
Principal Software Architect
June 2024 - Present
- Technical Lead, generative AI & innovation team (12 professionals)
- Designed/implemented pluggable agentic AI systems (MCP)
- Advanced RAG implementations (beyond vector DBs)
- LLM cost management in Azure/AWS, efficient caching
- Deployed private LLMs, integrated enterprise APIs for secure AI
- Created prompt evaluation frameworks for quality AI
- Evangelized generative AI internally and externally
- Ongoing research into emerging AI technologies
LineVision, Inc.
Principal Software Architect
Oct 2018 - June 2024
- Designed & led architecture of LineVision systems (event-driven microservices, IoT, sensor ingestion, stream processing, data visualization)
- Developed scalable data pipelines with AWS Lambda, Kinesis, TypeScript, Node, Python, Rust
- Created novel 3D point cloud and line identification algorithms
- Implemented 3D point cloud compression for edge devices
- Optimized AWS resources for cost, scalability, and security
- Led ISO 27001 certification technical planning
Interapt, LLC.
Technical Architect
Feb 2018 - Oct 2018
- Introduced microservices, serverless computing, and Docker
- Evangelized Infrastructure as Code
- Led HIPAA-compliant healthcare mobile apps (Ionic, React Native, Xamarin)
- Mentored on architecture, APIs, SoA, and data access
- Architected VR visualizations in Unity for PC/Oculus
CafePress, Inc.
Lead Software Engineer, Retail Technology
Aug 2016 - Feb 2018
- Delivered real-time product personalization (TypeScript, D3.js, SVG)
- Led development of eCommerce site (Angular, .NET Core)
- Introduced Angular Universal; architected new web apps
- 3D product customization (three.js, Blender, CEFSharp)
- Active in architecture discussions (Web API, RabbitMQ, TypeScript)
Genscape, Inc.
Senior Architect, Platform Technology
2009 - 2016
Multiple roles: Senior Architect, Director/Lead Software Engineer,
Senior Software Developer, Java Developer
- Created Angular-driven Micro Frontends, introduced TypeScript/org-wide standards
- Developed real-time sensor APIs, microservices, reusable Angular components
- Sole developer of biofuels startup initiative, ASP.NET MVC & Web API pioneer
- Directed LandViewer acquisition, migration, and integration
- Built with Spring (MVC, Security, Ehcache), optimized APIs and queries
- Developed European Natural Gas interface (Flash/J2EE/JSP, Flex, Spring, shared codebase)
- Architected Raspberry Pi2 sensor prototype (Node/C++), won innovation award
Fruit of the Loom, Inc.
Multiple Roles: Systems Development Technologist II, I, Java
Developer, Programmer / Analyst
2002 - 2009
- Built Flash-based Uniform Builder, custom Photoshop-like filters (AS3), art pipeline integration
- Developed Java web apps (Vignette Portal, JSP, Spring), product zoom features, AJAX navigation
- Security team member (preventing XSS, SQLi), championed security best practices
- Built CRM replacement for Salesforce, Spring MVC advocate
- Maintained and rewrote Java/Struts MIS Change Management app; led migration and training
- ColdFusion development, web migration, portal integration
Skills & Technologies
GenAI / LLMs
- OpenAI, Anthropic, Gemini, Copilot, Cursor
- MCP (Model Context Protocol)
- LangChain, Langgraph, PyTorch
- RAG, HiRAG, Graph-RAG
- Prompt Engineering, Private LLMs
Software Development
- TypeScript, JavaScript, Python, C#, Java, C/C++, Rust
- .NET, Postgres, Oracle, CosmosDB, MongoDB
- WebAssembly, React, Angular, Spring
Architecture & Methodology
- AI Agents, Automation with AI
- LLM Cost Management, Caching
- Event Driven Architectures, Microservices
- Software Design Patterns
- 3D Graphics (OpenGL, three.js)