Available for contract work · Remote

Thomas
Winter

Lead AI & Full-Stack Engineer

I build agentic AI systems, RAG pipelines, and full-stack applications for North American businesses — from multi-agent automation to cloud-native backends. Based in Hilo, Hawaiʻi.

Get in touch View experience
Hilo, Hawaiʻi · Available now

About

AI systems
engineer &
builder

I'm a Lead AI Engineer with 5+ years of professional experience building production-grade agentic systems, RAG pipelines, and full-stack applications for enterprise clients.

At Forsaeti I've shipped multi-agent systems that automated 85% of customer workflows, saved 1,200+ engineering hours annually, and delivered $250K in client value in a single quarter — using LangChain, Ollama, and local LLM inference on real production traffic.

Before going independent, I spent two years at CNA National leading Java/Angular enterprise modernization and a full AWS microservices migration at Infosys. I own the full stack — from agent design to frontend to deployment.

I operate through my consultancy Forsaeti. Clear communication, honest scoping, no ghost jobs.

thomas@forsaeti.com
Thomas Winter
85% Workflows automated
$250K Client value, Q1
1,200+ Eng. hours saved / yr

Experience

Where I've
shipped

Dec 2024 — Present
Forsaeti
Lead AI Engineer · Founder

Architected production multi-agent systems using LangChain + Ollama that automated 85% of customer workflows — saving 1,200+ engineering hours annually across 300+ employees. Deployed RAG-powered agents with Llama 3.2 (Q4 quantized) cutting reporting cycles from 2 days to 15 minutes. Engineered hybrid pipelines combining GPT-4o with local inference (Phi-3/Gemma 2), achieving 25 tokens/sec on CPU-only for edge deployments. Delivered 3 production AI agents in Q1 generating $250K in direct client value.

Current LangChain Ollama RAG Llama 3.2 GPT-4o FastAPI React AWS Bedrock Docker
01
Nov 2022 — Dec 2024
CNA National
Software Engineer

Led client portal upgrade across Java, Angular, Drupal, and AWS. Built Spring Boot microservices handling 5,000+ daily requests, boosting revenue 15%. Completed Angular 6→18 migration, integrated OKTA auth, and optimized bundle sizes for improved rendering and security.

Java Spring Boot Angular 6→18 AWS Microservices OKTA TypeScript
02
Dec 2021 — Nov 2022
Infosys
Java Developer

Led AWS cloud migration for large-scale systems — cutting downtime 40% and supporting 50% traffic growth. Built Java/Spring Boot/Hibernate features boosting analytics integration 30%, with full Agile SDLC ownership from requirements through deployment.

Java Spring Boot Python AWS Hibernate Cloud Migration
03
Jul 2017 — Dec 2021
Propagate Content
/ Fuse Media
Production Manager

Managed $2M+ projects and cross-functional teams in content production. Drove process efficiency, collaboration systems, and delivery across large-scale media operations.

Project Management $2M+ budgets Team Leadership
04
↗ View GitHub Portfolio

Skills

What I
work with

Agentic AI & LLMs

LangChain LlamaIndex Ollama RAG Pipelines Multi-Agent Systems Tool-Calling Agents ReAct Architecture Prompt Engineering Function Calling Hugging Face

AI Models & Infra

GPT-4o Llama 3.2 / 3.1 Phi-3 Gemma 2 Q4/Q5 Quantization Local Inference LangSmith Chroma Pinecone

Full-Stack

React Angular TypeScript Vue.js Java / Spring Boot Python / FastAPI Node.js PostgreSQL MongoDB GraphQL

Cloud & DevOps

AWS Bedrock AWS Lambda GCP Docker Kubernetes Terraform GitHub Actions Jenkins CI/CD

Contact

Let's work
together

thomas@forsaeti.com
LinkedIn GitHub