Factory AI — San Francisco, CA

SagarNarayan

Solutions Engineer at Factory AI. I build internal tools, tinker with homelabs, and occasionally rewrite open source tools in Rust and Go to see what happens.

Latest: Rewriting a Python web log parser in Go See the code

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Now

What I'm working on

Factory AI

Solutions engineering and building internal tools.

Rewriting

C/C++ tools in Rust with honest benchmarks.

0/508 parity tests

Homelab

Self-hosted stack across a Proxmox cluster.

0 services monitored

Writing

Build logs and rewrite studies.

RustTypeScriptKubernetesProxmoxNext.jsGSAPTailwindDockerAnsibleGrafanaPostgreSQLRedisNginxWireGuardZigARM / NEON

Work

Selected Projects

parser-go

Go HTTP service for parsing web logs, built in one Factory mission mode session with parity-gated benchmarks.

YAML

k8s-homelab

GitOps k3s cluster for homelab. Archived after migrating to LXC-based infrastructure.

Rust

xxhash-rs

Clean-room Rust reimplementation of xxHash with NEON-accelerated XXH3 and 508/508 parity tests.

Rust

the_silver_searcher

Incremental Rust rewrite of the Silver Searcher (ag) with published parity tooling and manifests.

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All repos

Writing

From the blog

All 4 posts

01Rewrite studybenchmarksgo

Rewriting a Python web log parser in Go

I rewrote a Python web log parser as a Go HTTP service using Factory mission mode. The Go version is about 1.9x faster, uses 35% less memory, and the whole thing -- service, tests, benchmark harness -- was built in one orchestrated mission.

Mar 202611 min read

02Rewrite studybenchmarksrust

Rewriting xxHash in Rust

A clean-room Rust reimplementation of xxHash: bit-exact parity across all four variants, NEON-accelerated XXH3, and comparable CLI-level throughput to the C reference on Apple Silicon.

Mar 20268 min read

03Rewrite studybenchmarksrust

Rewriting the Silver Searcher in Rust

A historical rewrite study of a Rust rewrite of ag: the first benchmark pass showed roughly 2× faster median runtime than ag on one measured workload, but still behind rg and ugrep.

Mar 20265 min read

04optimusautomation

Building Optimus in Public

Why I built an autonomous homelab SRE, how it works under the hood, and what I learned from real incidents.

Feb 202611 min read

All 4 posts

About

The backstory

StartedatCiscoMerakiasaNetworkSupportEngineer.Networkingproblemsallday,whichturnedouttobeagoodwaytolearnhoweverythingactuallyworks.

WenttoVerkadaasaSolutionsEngineerdoingcamerasandaccesscontrol,thenendedupmanagingateamofSEs.

CametoFactoryAIasaSolutionsEngineerbecauseItriedDroidsandlikedhowgoodtheproductwas,especiallythatit'smultimodelandplatformagnostic.Ialsobuildinternaltoolshere,whichistheworkIenjoymost.

OutsideofworkIrunahomelabandself-hosttoomanythings.IwriteaboutrewritingopensourcetoolsinRustandGo,publishingthebenchmarks,andseeingwhatmissionmodecanactuallyship.

Location

San Francisco, CA

Company

Factory AI

Career

Factory AI

Solutions Engineer

Verkada

Solutions Engineer, then SE Manager

Cisco Meraki

Network Support Engineer

Purdue University

Student