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Bobby Santiago

Senior Rails Engineer | AI Integration Specialist
Los Angeles, CA | me@bobbysantiago.com | GitHub | Twitter

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Professional Summary

Rails developer since 2006, now experimenting with AI integration and machine learning systems. Since 2022, I’ve been building intelligent applications using LLMs, FastAPI, and RAG architectures, combining my deep Ruby on Rails expertise with modern AI technologies. Currently developing an AI infrastructure platform that leverages both Rails backends and Python-based ML services for enterprise-scale deployments.

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Core Competencies

Ruby on Rails Expertise

Rails Experience Since 2006 - Rails 1 through 8, from startups to enterprise scaleFull-Stack Development - RESTful APIs, GraphQL, ReactJS, NextJS, shadcn/uiPerformance & Scale - Database optimization, caching strategies, microservices architectureModern Rails Stack - PostgreSQL, Redis, Sidekiq, RSpec, Hotwire, Stimulus

AI & Machine Learning (2022-Present)

LLM Integration - Production deployments with GPT-4, Claude, and open-source modelsFastAPI Development - Building high-performance Python APIs for AI servicesRAG Systems - Implementing retrieval-augmented generation with vector databasesML Infrastructure - Model deployment, GPU optimization, streaming architectures

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Professional Experience

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Founder & Technical Lead

AI Infrastructure Platform (Stealth) | June 2022 - Present
  • Building an intelligent LLM routing platform
  • Architecting system combining Rails backend with Python/FastAPI services for AI capabilities
  • Building FastAPI-based gateway on GPU infrastructure for AI-powered routing decisions
  • Implementing sophisticated routing: priority-based pools, health monitoring, latency tracking, cost optimization
  • Developing Rails backend on Railway for business logic, model registry, and analytics dashboard
  • Creating intelligent failover systems with circuit breakers and automatic provider fallback chains
  • Self-teaching Python, FastAPI, and ML concepts while building production systems

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Senior Software Engineer

SurveyMonkey | June 2016 - June 2022
  • Built NLP-powered response analysis system processing millions of survey responses using natural language processing
  • Implemented automated survey response tagging and categorization system
  • Developed real-time data processing pipeline with sub-second query performance
  • Created advanced analytics dashboards for customer experience insights
  • Developed technical architecture for SurveyMonkey CX platform launch, delivered within 6-month deadline
  • Integrated enterprise Salesforce instances with real-time data synchronization
  • Mentored junior engineers and led feature development initiatives

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Senior Software Engineer

chideo.com | August 2014 - June 2016
  • Led the architecture and implementation of a Ruby on Rails application redesign, resulting in improved performance and scalability for high-traffic loads
  • Designed and developed RESTful API endpoints, enabling seamless integration with third-party services and enhancing data flow across distributed systems
  • Implemented containerization for development and testing environments, improving deployment consistency and reliability
  • Established automated testing and continuous integration pipelines, significantly reducing defects and accelerating deployment cycles

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Software Developer

Seso Media LLC / A Hundred Years | February 2013 - August 2014
  • Engineered multiple full-stack web applications using Ruby on Rails for notable clients including TED Ed and The Smithsonian
  • Developed and optimized both backend APIs and frontend interfaces, creating seamless user experiences across devices
  • Collaborated with cross-functional teams to deliver data-driven web experiences, resulting in increased engagement metrics

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Earlier Experience

Front-end Developer | BlueLeaf | February 2012 - April 2012
  • Developed frontend components for a financial analytics platform that processes and visualizes complex financial data
  • Created interactive data visualization dashboards for financial advisors
Front-end Developer / Lead Designer | Pathable, Inc. | June 2011 - November 2011
  • Led frontend development for a community and event management platform handling high-volume user data
  • Engineered and implemented a complete UI redesign
Front-end Developer | Dynamo | June 2010 - December 2010
  • Utilized Ruby on Rails and JavaScript frameworks to build responsive frontend interfaces
UI Designer / Front-end Developer | Savvy Apps | January 2009 - December 2009
  • Built highly scalable social applications reaching 1.5M daily users across 12 languages
Full-stack Ruby on Rails Developer/Designer | Sebesta Enterprises | January 2007 - January 2009
  • Designed and implemented a full-stack social networking application with real-time data synchronization
  • Created scalable database architecture and integrated payment processing APIs

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Education

Bachelor of Science in Electrical Engineering
University of Massachusetts, Amherst | 1987 - 1991
Field of Specialization: Telecommunications
Honors: Dean’s List

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Technical Skills

AI/ML Technologies: LangChain, Hugging Face Transformers, OpenAI API, Anthropic Claude, Llama 2/3, GPT-4, PyTorch
Vector Databases: Pinecone, Weaviate, Chroma, pgvector
Languages: Python, Ruby, JavaScript, SQL
Frameworks: FastAPI, Flask, Ruby on Rails, React, Next.js
AI Infrastructure: CUDA, Docker, Kubernetes
Data Processing: Pandas, NumPy, Redis, Celery, Sidekiq
Monitoring: Prometheus, Grafana

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References

Available upon request

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