Designer-locked themes · A page you own forever

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Four art-directed themes — no hex codes, no font menus, no AI slop. Publish a link, or download one HTML file you host anywhere, forever.

The export is yours to keep — even if Portfolio Studio disappears.

PortfolioAustin, TX

Kai
Mercer

Founder · Engineer · Maker

TypeScript ✦React ✦Next.js ✦Rust ✦Postgres ✦Distributed Systems ✦WebGL ✦Go ✦Product ✦Growth ✦TypeScript ✦React ✦Next.js ✦Rust ✦Postgres ✦Distributed Systems ✦WebGL ✦Go ✦Product ✦Growth ✦TypeScript ✦React ✦Next.js ✦Rust ✦Postgres ✦Distributed Systems ✦WebGL ✦Go ✦Product ✦Growth ✦

I ship. Three startups, one acquisition, a few spectacular failures, and a lot of weekends turning ideas into things people actually use. I move fast, build in public, and believe the best way to learn anything is to launch it.

Experience

Founder & CTO

2022 / NOW

Velocity (YC W22)

Built the product from zero to 50k users and $2M ARR in 14 months. Wrote the first 100k lines, then hired and led a team of 8.

Founding Engineer

2019 / 2022

Pulse (acq. by Adobe)

Employee #2. Built the realtime collaboration engine handling 1M+ concurrent edits. Acquired in 2022.

Indie Hacker

2017 / 2019

Self-employed

Shipped 30+ side projects in two years; two hit #1 Product of the Day on Product Hunt.

Selected Work

Velocity

2022

Founder & CTO

Zero to 50k users and $2M ARR in 14 months. The whole stack, then a team of 8.

View →

Pulse Realtime Engine

2021

Founding engineer

Realtime collaboration handling 1M+ concurrent edits. Acquired by Adobe.

30 Apps in 30 Weeks

2019

Solo

A public build streak. Two hit #1 Product of the Day. All shipped, none precious.

View →

Education

B.S. Computer Science (left junior year to build)

Georgia Tech

Awards

★Forbes 30 Under 30 (2023)
★Product Hunt #1 Product of the Day ×2 (2021)
★Y Combinator W22 (2022)

Off the clock

Bouldering / DJing / Mechanical keyboards

Email me Twitter GitHub LinkedIn Website

Build mine — free Open it full-screen ↗

The Collection

Four points of view.

Each is its own font, palette, and layout — designed once, then locked so you can't break it. You choose a world, not a hundred settings.

PortfolioSan Francisco, CA

Lena
Sato

Staff Machine Learning Engineer

lena@lenasato.dev GitHub LinkedIn Twitter Website

I build large-scale ML systems that reach hundreds of millions of people. Over the past decade I've taken models from research notebooks to production infrastructure — training, serving, and the unglamorous reliability work in between. I care about systems simple enough to reason about and fast enough to disappear.

Selected Work

Atlas Serving Stack, Tech lead · 2023

An inference runtime that cut p99 latency 3× for a 70B model. Open-sourced; now powers serving at three other labs.

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Featherweight Quantization, Author · 2022

A post-training quantization method that holds accuracy at 4-bit. Paper + library, 4k★ on GitHub.

View →

Looking Glass, Creator · 2021

An interactive tool for visualizing attention inside transformer layers.

Experience

Staff ML Engineer, Northwind AI

2021–present

Lead the training infrastructure for a 70B-parameter foundation model. Cut training cost 40% with a custom data pipeline and brought time-to-first-token down 3× in production serving.

Senior Software Engineer, Meridian

2017–2021

Built the recommendation system powering the home feed for 200M+ daily users, lifting engagement 18%. Owned the online feature store end to end.

Machine Learning Engineer, DeepVision

2014–2017

Shipped the company's first on-device vision model for real-time object detection on mobile, running at 30fps under 50MB.

Education

M.S., Computer Science

2012–2014

Stanford University · Focus: Machine Learning

B.S., Electrical Engineering & CS

2008–2012

UC Berkeley

Skills

/Python
/PyTorch
/JAX
/CUDA
/Distributed Training
/Triton
/C++
/Go
/Kubernetes
/TensorRT
/MLOps
/Transformers

Interests

Bouldering, Generative art, Espresso

Awards

NeurIPS Best PaperNeurIPS, 2019
Patent: efficient post-training quantization2020
Internal Engineering Excellence AwardMeridian, 2018

001Minimal

Archivo · Swiss grid · cobalt

See the full page →

PortfolioAustin, TX

Kai
Mercer

Founder · Engineer · Maker

Experience

Founder & CTO

2022 / NOW

Velocity (YC W22)

Built the product from zero to 50k users and $2M ARR in 14 months. Wrote the first 100k lines, then hired and led a team of 8.

Founding Engineer

2019 / 2022

Pulse (acq. by Adobe)

Employee #2. Built the realtime collaboration engine handling 1M+ concurrent edits. Acquired in 2022.

Indie Hacker

2017 / 2019

Self-employed

Shipped 30+ side projects in two years; two hit #1 Product of the Day on Product Hunt.

Selected Work

Velocity

2022

Founder & CTO

Zero to 50k users and $2M ARR in 14 months. The whole stack, then a team of 8.

View →

Pulse Realtime Engine

2021

Founding engineer

Realtime collaboration handling 1M+ concurrent edits. Acquired by Adobe.

30 Apps in 30 Weeks

2019

Solo

A public build streak. Two hit #1 Product of the Day. All shipped, none precious.

View →

Education

B.S. Computer Science (left junior year to build)

Georgia Tech

Awards

★Forbes 30 Under 30 (2023)
★Product Hunt #1 Product of the Day ×2 (2021)
★Y Combinator W22 (2022)

Off the clock

Bouldering / DJing / Mechanical keyboards

Email me Twitter GitHub LinkedIn Website

002Bold

Anton · drenched poster · acid + red

See the full page →

I work at the intersection of machine intelligence and human understanding. My research centres on interpretability — making the systems we build legible to the people who use them. I write essays on technology and attention, and I believe the most consequential engineering decisions are, at heart, decisions about values.

Selected Work

The Legible Machine

Author — 2023

A book on making intelligent systems understandable to the people they affect. Translated into six languages.

Circuits

Lead — 2021

Open tooling for the mechanistic interpretation of transformer circuits — now standard equipment in the field.

On Attention

Essayist

An ongoing series of essays on technology, attention, and the ethics of automation.

Experience

Lead Research Engineer

2020–Present

The Aurora Institute

Lead the interpretability group. Published widely-cited work on the mechanistic interpretation of transformer circuits, and built the open tooling the field now uses to inspect them.

Visiting Researcher

2018–2020

MIT Media Lab

Studied human–model interaction and how explanations change the way people trust automated systems.

Software Engineer

2015–2018

Wolfram Research

Worked on symbolic computation and technical documentation systems.

Education

Ph.D., Computer Science

University of Oxford · Thesis on interpretable representations · 2014–2018

B.A., Mathematics

University of Cambridge · 2011–2014

Capabilities

Python · PyTorch · Interpretability · Research · Technical Writing · Mathematics · Causal Inference · Statistics

Recognition

ICML Outstanding PaperICML, 2022
Author, “The Legible Machine”2023
Fellow, Royal Society of Arts2021

Beyond work

Poetry, Long-distance running, Classical piano

003Editorial

Bodoni Moda · Didone gallery · oxblood

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✦ Portfolio

Rishi
Nair

Engineer · Creator · Hackathon Addict

Based inToronto, CA

Full-stack engineer by day, creative coder by night. I build developer tools, make generative art, and maintain an unhealthy number of side projects. Currently obsessed with local-first software and pushing the web platform further than it wants to go.

Skills

TypeScript
React
Next.js
Rust
WASM
Three.js
GLSL
WebGPU
Node
Python
Figma
Design Systems

Experience

Senior Software Engineer @ Edgeform

2021 to now

On the framework team shipping features used by millions of developers. Led the WebGPU rendering pipeline and the local-first sync engine.

Product Engineer @ Loom-ish Studio

2018 to 2021

Built design-tooling and the in-browser canvas editor from scratch.

Selected Work

Riffle

Creator · 2023

A local-first note tool with realtime sync and zero servers. 1M+ npm downloads.

Visit ↗

Plotter

Solo · 2022

A WebGPU generative-art playground. Won Hack the North.

Visit ↗

Grain

Designer & dev · 2021

A risograph-style photo filter built on WebGL shaders.

Field Notes

Photographer

Street photography from a year of travel, shot on a single 35mm lens.

Interests

Generative art, Lo-fi production, Street photography, Coffee

Awards

●GitHub Star (2023)
●Hack the North — Winner (2019)
●1M+ npm downloads (2022)
●Awwwards Honorable Mention (2023)

Education

B.Tech · Computer ScienceUniversity of Waterloo

Get in touch

Email GitHub Twitter Dribbble Website

004Bento

Bricolage · risograph grid · vermilion

See the full page →

Ownership

Your page can't be killed.

Hosted portfolio platforms get loved, then acquired or wound down, then switched off — and people's pages go with them. Portfolio Studio gives you one HTML file with your styles and photo baked in. Host it anywhere. We could vanish; your page won't.

Read.cvacquired, shut down
Polyworkwound down
Portfolio Studio→ a file you host anywhere

lena-sato.html — view source

<!doctype html><html lang="en">  <head>    <title>Lena Sato · Portfolio</title>    <link href="…fonts.googleapis…" rel="stylesheet">    <style>/* every color, size & font — inlined */      .accent{color:oklch(.48 .19 264)} …</style>  </head>  <body>    <img src="data:image/webp;base64,UklGRk…       your photo, baked into the file">    …your whole portfolio, in one file…  </body></html>

Export one yourself, free →

How it works

Start from a real example

Open a finished page in any theme and make it yours — no blank form, no staring at a cursor.

No account needed to start.

Switch worlds in one tap

The same you, re-set in four typefaces and layouts. Find the one that fits.

Publish or own it

Get a link at /p/your-name, or download the standalone HTML and host it anywhere, forever.

Build mine — free

Free to build, publish, and export. A Pro tier is coming — export stays free, always.

A portfolio you own — that can't be sunset.

Looks commissioned. Yours forever. Free to start.

Build mine — free or browse the four themes →