Jeff Dilley · Engineering and AI leader · Los Angeles
I started writing software as a teenager, for fun. I’ve done it professionally since I was seventeen.
I learned how to be a professional at a small company building applications for local governments. Since then I’ve helped build four startups that were later acquired, led teams, worked as an individual contributor, and done everything in between. Today I’m co-founder and CTO of Seneca Shield. Until October 2026 I was also a staff engineer at StartEngine. I’ve been fascinated by AI since I was a teenager, and I’ve used it every day since 2023.
- Since
- 2002
- Good at
- Getting AI out of experiments and into production, on systems where the data has to be right
- Looking at
- Engineering and AI leadership roles that stay hands-on
Chapter 01 · Working with models
Recent Work
Lead case
Building with agents
I used coding agents to build Seneca Shield and StoryArbor, and both products include AI features. My own testing harness, plus tests that exercise real behavior, let me iterate with agents quickly.
Read the case →Here's how I've been using AI lately. Some of it is professional, and some is for fun and curiosity.
- Private
Employer work
StartEngine
Staff Software Engineer
Built internal assistants for operations workflows, system monitoring and first-pass triage, code review, and more.
- Private
Company I co-founded
Seneca Shield
CTO and co-founder
Built AI agent workflows and tools for healthcare compliance, where data security and accuracy come first.
- In development
Private product
StoryArbor
Creator and engineer
Local AI tools and workflows for writers, running on your own Mac.
- Experimental
Private experiment
JeffLLM
Personal project
An experiment harness in Rust for training and learning about language models.
Where StoryArbor runs: on one machine
StoryArbor keeps the manuscript, the models, and the answers on the writer's Mac, with no server in the loop. It's a SwiftUI interface over a Rust core that does the reading and the retrieval, with inference on the Mac itself.
Chapter 02
Record
Feb 2024 – Present
Seneca Shield · CTO & Co-founder
Jul 2023 – Oct 2026
StartEngine · Staff Software Engineer
Sep 2022 – Apr 2023
Unblocked · Senior Software Engineer
Aug 2018 – Aug 2022
Blockfolio · Senior Software Engineer
Jun 2011 – Aug 2018
Dun & Bradstreet · Senior engineer through engineering manager