Philbert Christian Sarana
LLMOps & Applied AI Engineer · SF Bay Area

I ship agentic systems end to end.

Currentlydeep in neuro-computation

Agent design, retrieval, eval harnesses, and the deployment and observability that keep them running in production.

01 — Now

What I'm on

Building

Agentic systems at HeadOn: user matching, message testing, and the telemetry behind both.

Running

Staging and deployment for a seven-person team.

Watching

Neuro-computation, and building autonomous agent harnesses.

Open to

Founders, investors, and anyone shipping applied AI.

02 — Work

The path so far, in order.

2025 — Present
Applied AI Engineer / LLMOps · SF Bay Area

HeadOn

Agentic matching lifted average conversation time 227%. Shipped a message-testing tool now used by a DC think tank.

2025
Technical Member of Staff, Growth Lead · San Francisco

Wrodium

Scaled to $200K+ ARR in three months. Most Innovative Startup at Berkeley SkyDeck.

wrodium.com
2025
Writing · thesuperoptimal.com

Super Optimal

Essays on AI, neurotech and industry.

thesuperoptimal.com
2022 — 2025
Co-founder & Investor · Berkeley, CA

Blackskies Ventures

Berkeley’s largest AI startup ecosystem: 100+ founders, 9 YC alumni, $200M+ in follow-on funding.

2022 — 2023
Event Manager · 501(c)(3) nonprofit

Garuda Hacks

Largest hackathon in Southeast Asia: 2,350+ participants, 45+ countries.

2021 — 2025
B.A. Statistics · B.A. Data Science

UC Berkeley

BAIR lab volunteer. President, Berkeley Indonesian Students Association.

03 — Thesis

Where I'm looking next.

Three industries I track closely, write about, and want to back.

01

Heavy manufacturing

Domestic US industrial capacity — the physical base everything else depends on, and the least glamorous place to rebuild.

02

Neuro-compute

Neural interface technologies and the compute stack underneath them. The layer between brains and machines is still wide open.

03

Biotech

Adjacent biotech advances that compound with both of the above.

04 — Projects

Things I built that have been useful.

All repos on GitHub
HeadOn · internal

CTO Digital Twin

An MCP-backed twin of our CTO. Handles 70% of the team’s PRs.

HeadOn · shipped

Message testing harness

Agents simulate voter personas to score and rank message variants.

In progress

Tokenizer

A tokenizer built from scratch. Currently in progress.

05 — Off the record

Rooms I've been in

06 — Movies

Eight films, no ranking.

I will argue about all of them. Ordering them against each other is a losing game, so here they are flat.

Inglourious Basterds
Tarantino · 2009

The tavern scene is a masterclass in how long a director can hold a room before the table flips.

Casablanca
Curtiz · 1942

Every line is quotable and not one of them is showing off. Still the cleanest ending in film.

Mrs. Doubtfire
Columbus · 1993

A film about a man losing his family, played at full volume so you do not notice it breaking your heart.

Dog Day Afternoon
Lumet · 1975

Pacino turns a failed robbery into a street rally. Nothing else captures a plan collapsing in public this well.

La La Land
Chazelle · 2016

The epilogue does what most films spend three acts avoiding. It tells you the truth.

Silence
Scorsese · 2016

Scorsese with nothing comfortable left in the frame. Faith stripped down to the part that costs something.

The Big Short
McKay · 2015

Makes contempt entertaining for two hours, then hands you the bill and makes you sit with it.

Ratatouille
Bird · 2007

Anyone can cook. Ego’s closing monologue is the best thing ever written about criticism, in a cartoon about a rat.

07 — Books

Mostly one world.

I read widely and then come back to Westeros anyway.

A Song of Ice and Fire
Martin

A political novel wearing a fantasy costume. Every chapter is somebody misreading the room and paying for it.

Fire & Blood
Martin

History written by the winners, then annotated by people who think the winners were lying. The best part is the disagreement.

The wider Westeros canon
Ongoing

Dunk and Egg, the appendices, the arguments. I am in the sphere, not just the series.

Calendar open

Always down to meet cool people.

Grab 15 minutes on my calendar. Founders, investors, engineers, or anyone building in manufacturing, neuro-compute or biotech.

Google appointment schedule

The live booking grid embeds here. Drop the appointment-schedule link into CALENDAR_URL and it wires itself in.