AI engineering consultancy
Senior engineers, in-house AI agents. Ship in weeks, not quarters.
ESARC pairs principal engineers with a fleet of in-house AI agents so a small team can outship a large one, at a fraction of Big-4 cost.
Shipped for, and with


How we’re different
Three things make this engagement model possible.
01
Senior-only
No junior offshore pyramid. Principal engineers in your repo, your Slack, your standups, leading the build, not handing it off.
9+ years shipping. Meta, Amazon, McGraw Hill on the resume.
02
AI-native delivery
Our in-house agent fleet writes, reviews, and tests code alongside our principals. The result is throughput a 10-person team would charge for.
A 4-agent fleet runs $200/day. A junior dev runs $700.
03
Production-grade
Evals, observability, security, rollback. We ship systems that survive contact with real traffic, not demos that fall over on Monday.
Sidney Voice AI runs live calls. RAG over real EHR data.
Four ways we engage
Pick the shape that matches your problem.
Recent work
All case studies →What our principals shipped last quarter.
How we work
Three phases. No surprises.
Scope
A principal sits with you for a week. Reads the codebase, talks to the people. You get a written plan, not a slide deck.
Sprint
Principal plus agents in your repo. Daily PRs. You see what landed, what broke, what comes next. No black box.
Handoff
Runbook, evals, on-call rotation if you want it. Your team owns it on day one. We stay on call for 30 days.
Tell us what you’re trying to ship.
A principal engineer reads every inbound. We reply same day on weekdays, with an honest read of whether we’re the right team for the work.