Dallas, TX, US

About Me

RSSResume

I'm Gagan. I started coding in 9th grade because it was the one class where I was building something instead of memorizing it.

It was supposed to be a hobby. The hobby did not hold.

Now: shipping Levelrail and theauth, based in Dallas
By day

Senior Software Engineer, Marriott

Owning frontend architecture on the Bonvoy loyalty portal for millions of active members.

By night

Founder, GLINR STUDIOS

A one-person studio building the tools I wished existed. Some found their people. Not all of them did. Fine.

glinr.com
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Years building
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Products built
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npm packages

Why I built what I built

Plus ProfClaw for self-hosted agents and Levelrail for self-hosted deploys.

I obsess over how things feel to use.

The half-second delay before a button responds. The error state that does not quite explain itself. Most of my projects started because I hit one of those and refused to let it go.

TypeScriptJavaScriptJavaPythonReactNext.jsReact NativeNode.jsSpring BootGraphQLPostgreSQLRedisDockerKubernetesAWSGCPCI/CDMicroservices
Anthropic Claude Code Hackathon, top 500 of 15,000M.S. Software Engineering, University of St. Thomas

My sites

glinr.comthesvg.orgaskverdict.aitheauth.devSoondocs.theauth.devlevelrail.glinr.comfilagram.comglinui.comgeokit.devfeaturedrop.devtypeweaver.comprofclaw.aiwebandesigns.comsaasfolk.comthegdsks.comgdstudyworld.comSoonreviewmee.comSoon

Publications

  • Assay: Claims That Decay With the Code

    Om Shankar Tiwari, Tangi Vass, Gagan Deep Singh · arXiv:2609.36170 [cs.SE] · Sep 2026

    Binds every claim an AI coding agent makes (tests pass, no secrets, behavior preserved) to the Merkle hash of the code it covers, so the claim goes stale exactly when that code changes. Builds on Stacklit's committed, Merkle-skipped index.

    PDFCodeRead the post

Recent Posts

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Assay: Claims That Decay With the Code

Our new paper on arXiv binds every claim an AI coding agent makes to the Merkle hash of the code it covers, so the claim goes stale exactly when that code changes.

ResearchAI AgentsStacklitSeptember 30, 2026 · 3 min read

Introducing Levelrail

Levelrail is a self-hosted deployment platform: push to git, get a running app with TLS, logs, metrics, and rollback.

DevOpsSelf-HostedOpen SourceSeptember 21, 2026 · 2 min read

Kavachos Is Now theauth

Kavachos has been rebranded to theauth. Here's what changed, what didn't, and how to migrate.

AuthTypeScriptAISeptember 21, 2026 · 2 min read

theSVG Passed 7,400 Icons: Auth Badges, Cleaner Categories, and Icon Feedback

theSVG crossed 7,400 brand and cloud SVG icons six months after launch. What is inside the library, what shipped along the way, and how to use it from npm, the CDN, the CLI, or an MCP server.

Open SourceSVGtheSVGSeptember 16, 2026 · 4 min read

Local-First Is Here, Loudly: Why Three of My Products Made the Switch

For years I dismissed local-first as a correctness-obsessed ideology. In the last twelve months three of my products adopted it, and the reasons were not what the manifestos said they would be.

Local-FirstArchitectureCRDTApril 22, 2026 · 7 min read

Open Source

Experience

Senior Software Engineer

Marriott International

Jun 2025 - Present

Frontend architecture on the Bonvoy loyalty portal serving millions of active members. Next.js and GraphQL on AEM, Kubernetes, and Cloud Run, including the Bonvoy Wallet, co-brand credit card, and gift card web integrations.

Founder & Lead Architect

GLINR STUDIOS (formerly GLINCKER)

2020 - Present

Building an all-in-one platform with URL shortening, QR codes, AI moderation, and GLINR Studios developer tools suite. Dozens of npm packages published.

Founder

theSVG

Mar 2026 - Present

Open-source brand and cloud SVG icon library at thesvg.org, with npm packages, React, Vue and Svelte components, a CLI, a REST API, a CDN and an MCP server.

Founding Engineer

Xylo AI

Jul 2025 - Mar 2026

Led an Azure-to-GCP migration in one week (~$200K/year savings) and rebuilt the backend from a Django monolith to Spring Boot and FastAPI microservices, including ML model serving and data pipelines.

Software Engineer

Ameriprise Financial

Sep 2022 - Jun 2025

Shipped React and Next.js frontends on Node and Spring Boot microservices in a regulated environment. Advisor workflows ran ~30% faster, deploys 25% faster, and two Chairman's Awards.

Education

M.S. Software Engineering

University of St. Thomas

Minneapolis, MN

What People Say

“Gagan is the kind of engineer who sees the full picture, from system design to developer experience. His open-source work on GeoKit and glin-profanity shows the depth of his thinking.”

A.R.

Staff Engineer, Fortune 500 Tech

“Working with Gagan on GLINCKER was like having an architect and a builder in one person. He doesn't just plan systems. He ships them.”

M.K.

Product Designer, GLINR Studios

“His npm packages are some of the most thoughtfully designed tools I've used. The documentation is clear, the APIs are clean, and everything just works.”

S.P.

Full-Stack Developer, Open Source Contributor

Technologies

TypeScriptJavaScriptJavaPythonReactNext.jsReact NativeNode.jsSpring BootGraphQLPostgreSQLRedisDockerKubernetesAWSGCPCI/CDMicroservices

Publications

Parsing 11 languages in pure Go without CGO: how I replaced regex with a tree-sitter runtime

DEV.to

I tested 4 codebase-to-AI tools on FastAPI (108k lines). Here are the token costs.

DEV.to

$0.60 per session, just on orientation. Here is what my AI agent was doing before writing any code.

DEV.to

I Built a Self-Hosted AI Agent That Runs on a Raspberry Pi

DEV.to

Why I stopped uploading files to random websites (and what I use instead)

DEV.to

5 open source auth libraries that actually handle AI agents (2026)

DEV.to

Add auth to your AI agents in 5 minutes with KavachOS

DEV.to

Build Your First MCP Server in 20 Minutes

DEV.to

I Tested Every Open-Source Brand SVG Library So You Don't Have To (2026 Edition)

DEV.to

I Got Tired of Hunting for SVG Logos. So I Open-Sourced 4,000 of Them

DEV.to

We Cut 70% Bundle Size: TanStack Query + Zustand at GLINR

DEV.to
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