Engineering LeaderProduct BuilderDesign Systems

JeremyStover

I build high-performance teams andship platforms that scale.

14+ years building for the web

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The Journey

14+ Years
Building for the Web

From founding a web development firm in the jQuery era to leading teams serving tens of millions of users, I focus on durable architecture, design systems, and outcomes that last.

20M+
Users Served
50k+
Lines Refactored
7+
Years in Production
11
Engineers Led

Team Builder

Built and scaled teams, coached new managers, and set operating rhythms that keep delivery steady.

Still Shipping

I stay hands-on with product and code so decisions stay grounded in what ships.

Impact Focused

Built systems that hold up over time, from video infrastructure to mission-critical ops tooling.

Career Highlights

Impower.ai

Senior Engineering Manager

2025 - Present

Brought in to train the next wave of engineering managers and onboard new teams for a major client, while staying hands-on in C#/.NET delivery.

→Trained new engineering managers on weekly 1:1s, leading by example, and long-term growth plans
→Built an internal design system and standardized best practices across internal apps
→Coached engineers and managers to onboard quickly without sacrificing culture or quality
→Stayed hands-on in C# while mentoring across teams
Onboarded new teams for a major clientHands-on leadership + IC delivery
ReactTypeScriptshadcn/uiReact QueryC#PostgreSQL

Scribe

Engineering Manager

2022 - 2025

One of the first 15 employees. Led frontend org, built the design system, and scaled teams as the platform grew to 20M+ MAU.

→Built the initial design system: 50+ components with full test coverage and design approval
→Led a rewrite of the main viewer experience, reducing errors from millions/day to <12/day
→Scaled engineering from ~10 to 50+ and mentored new engineering managers
→Ran Frontend Engineering All-Hands for ~30 frontend engineers across products
→Went 4 years with zero team attrition while building a high-trust culture
20M+ MAU50+ DS componentsMillions/day → <12/day errors10 → 50+ engineers
ReactTypeScriptNext.jsTailwindRadixshadcn+1 more

Mint Songs

Senior Software Engineer

2021 - 2022

Sole frontend engineer building a web3 music streaming platform for independent artists (later acquired by Napster).

→Built the entire app in React with a custom TypeScript audio engine for low-latency playback
→Designed a fault-tolerant playlist system that handled flaky networks gracefully
→Created an embeddable player used on websites and Twitch streams
→Partnered directly with artists multiple days per week to shape the product
Acquired by NapsterCustom audio engineArtist-driven product
ReactNext.jsTypeScriptMaterial UIEmotionSass

Crunchyroll

Software Engineer, Video

2017 - 2019

Rewrote the video player and platform theming to support a growing multi-brand ecosystem.

→Rebuilt the player in React + video.js around a finite-state machine to reduce bug states
→Built a theme architecture for a dozen+ brands to ensure consistency and recognition
→Shipped a fully a11y-compliant player
→Burned ads into streams via custom m3u8 service workers
→Rolled the player out to dozens of web apps after AT&T acquisition
Deployed across AT&T video portfolioA11y compliant
JavaScriptvideo.jsHLSm3u8CSSService Workers
Featured Work

Things I've
Shipped

Enterprise platforms, growth surfaces, and experiments—each project is a hard problem shipped.

Screenshot of Semfora
personal

Semfora

Semfora is a suite of tools that provides AI assistants with semantic understanding of entire codebases. The engine handles repos up to 1TB+, Graph visualizes 10M+ nodes, and PM offers 50+ MCP tools. All completely offline.

1TB+ codebases10M+ nodesZero telemetry
→85% token reduction vs JSON (847 → 127 tokens)
→Sub-millisecond query response times
→Supports 200+ programming languages
→50+ MCP tools for AI assistants
RustTypeScriptMCP ProtocolTree-sitter
Screenshot of Scribe Design System
professional

Scribe Design System

Created and owned the design system powering Scribe's 20M MAU platform. Built with Radix, near-perfect A11y scores, full Storybook coverage.

ReactTypeScriptRadixTailwind+2
Screenshot of Crunchyroll Video Player
professional

Crunchyroll Video Player

Built the video player still in production today. Custom video.js rebuild with state machine architecture, serving millions across Crunchyroll, VRV, and Rooster Teeth.

JavaScriptvideo.jsHLSm3u8+2
Screenshot of Mint Songs Player
professional

Mint Songs Player

The music player that ruled web3. Acquired by Napster for re-release in 2026.

ReactNext.jsTypeScriptMaterial UI+1
Screenshot of RIT - Rust Image Transformer
open source

RIT - Rust Image Transformer

Parallel CPU image processing tool for ML training datasets. Bulk transforms with metadata preservation.

RustParallel ProcessingImage Processing
Screenshot of musicManager
personal

musicManager

Music metadata manager with checksum-validated file transfer for iPod DAPs. Built-in player included.

TypeScriptNode.jsElectron

3 more projects on GitHub

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Let's
Connect

Looking for a hands-on engineering leader, design system partner, or platform rebuild? Let’s talk about what you’re building.

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Built with

Modern Web Technology

ReactTypeScriptThree.jsTanStack StartMotion