I'm Philip C., a Top Rated developer on Upwork with over 10 years of experience. I work with businesses to build production-grade AI apps and automations, API integrations, and scalable backends.
CORE SPECIALTIES
AI Systems Development:
- Production AI integrations, custom LLM agents, knowledge bases, and RAG pipelines
- Document extraction, automated parsing, and structured data outputs
- Multi-agent orchestration and API tool calling
Backend and API Architecture:
- Scalable microservices and REST/GraphQL APIs (Python, FastAPI)
- Secure authentication, RBAC, rate-limiting, and async background workers
- Custom third-party integrations (Square, Shopify, Zoho CRM, ERP systems)
Cloud, DevOps and Databases:
- Containerized cloud deployments (AWS EC2, ECS, Lambda, Docker, CI/CD)
- Relational databases and vector search (PostgreSQL, Supabase, MySQL, pgvector)
RECENT ACHIEVEMENTS
- Lead Backend Architect for an enterprise AI-powered SaaS platform ($99K+ single contract delivery).
- Engineered a live B2B wholesale ordering and checkout platform integrated with real-time ERP data.
- Built 10+ custom AI pipelines and automations including customer support workflows and document extraction systems.
TECH STACK
- Backend: Python, FastAPI, Node.js
- AI and agents: LangGraph, LangChain, PydanticAI, OpenAI API, Claude, OpenRouter
- Databases: PostgreSQL, Supabase, MySQL, Redis, Vector Databases
- APIs and integrations: REST, GraphQL, n8n, Webhooks
- Cloud and infrastructure: AWS (Lambda, EC2, ECS, S3), Docker, Railway, Replit
Whether you need to build a modern AI pipeline from scratch or bridge complex external APIs into your existing stack, I deliver secure, maintainable code. Let's discuss your project goals.