I build full-stack software that has to work in the real world .

Open live product Inspect source

Merged on March 20, 2026

Stack focus

ReactNext.jsTypeScriptNode.jsPythonPostgreSQLAI SDKs

Proof snapshot

At a glance

This section stays quantitative. The detailed proof lives in the project and open-source sections below.

Live Products

Auth, billing, sync, and persistence in public apps

Merged External PRs

Maintainer-reviewed merges across OpenAI, Astro, MSW, Google, and commaai

PRs In Review

Current OSS work still moving through maintainer review

Years Building Publicly

Products, repositories, and OSS work visible in the open rather than hidden in resume bullets

Featured work

Selected work

Start with the strongest shipped work. Each case study is compressed for fast review and points straight to live proof or source.

Flagship Product

Flagship proof

TypeJung

Result

Shipped publicly at typejung.com with tiered monetization, public source code, and inspectable product behavior.

System

React and TypeScript on the frontend, Express on the backend, Supabase for auth and persistence, Stripe for billing, and Gemini-powered report generation.

TypeJung

Live full-stack assessment product with paid tiers and AI-generated reports.

Built a complete assessment product with a multi-step questionnaire, gated reports, account handling, and AI-generated insights that sit inside a paid product flow instead of a demo.

Why it exists

A personality assessment can get attention, but turning it into a product requires more than questions. It needs authentication, payments, report generation, and a flow that makes the value obvious.

Constraint

The system had to keep the experience readable while handling monetization, report generation, and account state without making the product feel fragile.

Inspectable proof

Live product at typejung.com

40-question assessment engine

Supabase auth, persistence, and Stripe billing

Stack

ReactTypeScriptExpressSupabaseStripeGemini

Real-Time Web App

Flagship proof

Collab Editor

Result

Published as a live app with public source code and clear proof of real-time systems work.

System

Next.js and TypeScript on the client, Tiptap for editing, Socket.io for sync, PostgreSQL for persistence, and Prisma for data access.

Collab Editor

Real-time collaborative editing with sync, autosave, and persistence.

Built a collaborative document editor with live synchronization, rich-text editing, autosave behavior, and a persistent backend instead of a local-only prototype.

Why it exists

Collaborative editing looks simple at the surface, but the real work is keeping shared state, autosave, and persistence coherent when multiple users are editing at once.

Constraint

The main challenge was balancing responsive editing, real-time collaboration, and durable persistence without turning the UX into lag or inconsistency.

Inspectable proof

Live app plus public repository

Socket.io synchronization with autosave

PostgreSQL persistence through Prisma

Stack

Next.jsTypeScriptSocket.ioTiptapPostgreSQLPrisma

Open live app Inspect source

Accepted Upstream PR

Flagship proof

commaai/opendbc PR

Result

Merged upstream on January 27, 2026, giving public proof of reviewable engineering work outside my own repositories.

System

Python testing and verification work inside an established open-source repository with maintainer review and existing project standards.

commaai/opendbc PR

Merged upstream testing contribution in a public open-source codebase.

Authored a focused upstream pull request improving cache hypothesis strategies in commaai/opendbc with test-backed changes and a narrow, reviewable scope.

Why it exists

Public proof is stronger when it includes reviewed code in somebody else’s codebase, not just self-published projects. That means finding a concrete issue and making a change that can survive review.

Constraint

The contribution had to be technically correct, easy to review, and precise enough to fit an existing upstream codebase without overclaiming impact.

Inspectable proof

Merged January 27, 2026

Public maintainer review and accepted diff

Test-backed cache hypothesis change

Stack

TestingOSSVerification

Open merged PR Open repository

Public work

Open source

Reviewed upstream code is the strongest external proof here. This section separates merged work from PRs still in review, then shows the repositories behind both.

View all on GitHub

Selected repositories

Projects worth opening first

Stronger product and systems work first

jungian-typology-assessment

Full-stack Jungian typology assessment with auth, billing, persisted results, and AI-generated reports.

Shipped Products1

ai-speech-coach

Speech coaching app with live video sessions, Tavus integration, and saved feedback workflows.

Shipped Products0

GuardTrack

Guard patrol tracking app with geofencing, session management, and checkpoint logging.

Shipped Products0

docagent-studio

Local-first document QA with citations, hybrid retrieval, and offline evaluation for personal knowledge bases.

Python

AI Tools & Experiments0

Pulse

Minimal macOS system monitor widget with live CPU, RAM, disk, battery, and network stats.

Swift

Systems & Utilities0

collab-editor

Real-time collaborative editor with Tiptap, Socket.io sync, autosave, and PostgreSQL persistence.

openai/openai-agents-python - race-safe SQLAlchemySession first writes

Systems & Utilities0

Upstream review

Contribution proof

Merged

6 accepted

google/benchmark - benchmark_min_time CLI docs

Merged on March 20, 2026

withastro/astro - getImage sync error message

Merged on March 26, 2026

withastro/astro - language-server completion routing

Merged on March 24, 2026

mswjs/msw - RequestHandler typing compatibility

Merged on March 16, 2026

commaai/opendbc - cache hypothesis strategies

Merged on March 19, 2026

Merged on January 27, 2026

In review

5 live PRs

Realtime sideband call_id support

Active Node SDK PR for sideband control connection support.

openai/openai-node · OpenAI · Mar 2026

Astro component auto-import rewrite

Fixing language-server import suggestions around AstroComponent names.

withastro/astro · Astro · Mar 2026

Hidden-anchor audit false positive

Removes a false positive in content auditing for hidden anchors.

withastro/astro · Astro · Mar 2026

defineLiveCollection loader typing

Tightens interface typing for live collection loaders.

withastro/astro · Astro · Mar 2026

setupWorker lifecycle restore

Active browser-side lifecycle fix for worker startup behavior.

mswjs/msw · MSW · Mar 2026

Contribution map

Where the upstream proof comes from

Logos anchor the organizations. The copy focuses on what the change proved, not just the PR title.

Merged upstream PRs

PRs in review

Public repositories

OSS ecosystems

OpenAI

2 merged · 1 open

Astro

2 merged · 3 open

MSW

2 merged · 1 open

Google

1 merged

comma.ai

1 merged · 2 open

Community OSS

0 merged · 1 open

OpenAI

SDK reliability work across agents, memory, and realtime client flows.

Maintainer-accepted fixes in production-facing AI SDKs.

tracked PRs

SQLAlchemy session race fix

openai/openai-agents-python · Mar 2026

Made first writes in shared session storage race-safe.

Streaming cancel-after-turn docs

openai/openai-agents-python · Mar 2026

Clarified tricky streaming behavior for realtime SDK users.

Realtime sideband call_id support

openai/openai-node · Mar 2026

Active Node SDK PR for sideband control connection support.

Astro

Language-server correctness fixes and framework DX improvements.

Strong fit for debugging editor, typing, and framework edge cases.

tracked PRs

HTML expression completions -> TypeScript

Deferred expression completions to the TS layer to improve correctness.

getImage sync error message fix

Improved error feedback during Astro sync workflows.

Astro component auto-import rewrite

Fixing language-server import suggestions around AstroComponent names.

Hidden-anchor audit false positive

Removes a false positive in content auditing for hidden anchors.

defineLiveCollection loader typing

Tightens interface typing for live collection loaders.

Infinite-delay open handle fix

MSW

Browser and Node runtime fixes in one of the most-used API mocking tools.

Proof of debugging discipline in test-heavy JavaScript stacks.

tracked PRs

RequestHandler setup typing fix

Closed lingering Node handles in long-lived delay scenarios.

mswjs/msw · Mar 2026

setupWorker lifecycle restore

Restored accepted handler typing in setup helpers.

mswjs/msw · Mar 2026

benchmark_min_time CLI docs

Active browser-side lifecycle fix for worker startup behavior.

mswjs/msw · Mar 2026

Google

Developer-experience improvements in widely used benchmarking infrastructure.

Shows scope discipline when the right fix is small and mergeable.

tracked PRs

google/benchmark · Mar 2026

Documented supported CLI forms and precedence clearly enough to get merged fast.

comma.ai

Validation and test reliability work in autonomous driving infrastructure.

Signals comfort with safety-critical testing and systems-level debugging.

tracked PRs

Hypothesis strategy caching

commaai/opendbc · Jan 2026

Reduced repeated test overhead in car validation suites.

Safety replay state initialization

commaai/opendbc · Mar 2026

Fixes replay test state setup before segment initialization.

Replay-route TX fuzz testing

commaai/openpilot · Mar 2026

Adds fuzz coverage for openpilot TX behavior against panda replays.

Community OSS

Independent contributions outside the larger org ecosystems above.

I do not only contribute where I already have context or reputation.

tracked PRs

Long-term chunk geometry caching