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<matthew />

Open to Staff, Principal & Architect roles — remote

/* Staff / Principal Software Engineer */

Hi, I'm Matthew Marcus.I builddistributed web platforms.

A Nashville-based staff engineer with nearly 20 years across distributed web application engineering, architecture, and leadership. I focus on true full-stack ownership: from domain models and APIs to the UI, plus the agentic tooling that helps a team move faster.

matthew@nashville: ~

➜ ~ whoami

matthew_marcus

➜ ~ cat profile.json

{
  "role":       "Staff / Principal Software Engineer",
  "experience": "~20 years",
  "location":   "Nashville, TN",
  "mode":       "Remote · United States",
  "veteran":    true
}

➜ ~ ls ./stack

Node.js React TypeScript Next.js AI / Agentic Engineering

➜ ~

//Impact

A few numbers from the last two decades, all real and all on the record.

Shipping production software
~20 yrs
// From NFL team sites to agentic platforms
JS → TS migration in ~2 months
90k LOC
// Solo, LLM-agent assisted · GoodParty.org
E-commerce platform rewrite
$1B+/yr
// Front-end architecture · Fanatics
Hot-market load tuning
120 TPS
// Node, React, Relay, Docker
Single → multi-tenant refactor
3 mo
// With two other engineers · OpenLoop
Patent component
US 8,869,019
// Point-and-click page authoring · Captora

//What I Build

Where I spend my time and where I'm most useful to a team.

01.

Agentic Engineering

Claude Code with MCP across company systems, custom Claude skills where MCP doesn't exist, and fully automated agentic PR review pipelines.

ClaudeMCPAWS BedrockGitHub Actions

02.

Platform & API Architecture

Strictly typed backends with clear boundaries: NestJS + Prisma, Go/Echo web services, runtime-validated contracts, and SOLID design.

NestJSPrismaGoZodPostgreSQL

03.

Full-Stack Product Delivery

End-to-end features from API contract to accessible, polished UI, with instrumentation for production debugging.

Next.jsReactTailwindshadcn/ui

04.

Legacy Modernization

Rebuilding fragile systems while they stay live (swapping the engine mid-flight) without stopping feature delivery.

RefactoringTypeScriptMigrations

05.

Auth, Security & Multi-Tenancy

SSO, OAuth2 and TFA via Clerk, JWT/JWK payment flows, CSRF/XSS hardening, and white-label multi-tenant data models.

ClerkOAuth2JWTRBAC

06.

Data Visualization at Scale

Big-data analytics UIs on a GPU RDBMS, D3-driven dashboards, and real-time full-duplex data via sockets.

D3Socket.ioThriftRedux

GoodParty.org · Mar 2024 – 2026

GoodParty.org Platform Rebuild

End-to-end architectural rebuild of an open-source platform that gives independent political candidates scalable campaign infrastructure.

TypeScriptNestJSPrismaPostgreSQLZod
// Faster delivery, fewer production incidents, continuous deployments

The company's first fully automated agentic PR review workflow: Claude via AWS Bedrock, with review comments and fix flows run through GitHub Actions.

ClaudeAWS BedrockGitHub ActionsMCPClaude Skills
// Removed the code-review bottleneck for team projects

GoodParty.org · 2024 – 2025

90k-Line Next.js → TypeScript Migration

Independently migrated a ~90,000-line Next.js JavaScript codebase to TypeScript in about two months using LLM agents.

Next.jsTypeScriptCursorLLM AgentsTailwind
// ~90k LOC converted in ~2 months, solo

Personal · Open Source · Sep 2026 – Present

Seven-Tree Tuning

Reverse-engineered the encrypted .hcf tune format for a 1996 F-350 7.3L Power Stroke Hydra chip, then built a web tune editor to change shift points and idle speed and save a new, flashable tune.

TypeScriptNext.jsReverse EngineeringAgentic AI
// A proprietary binary format turned into a browser-based editor

Personal · Open Source · Jun 2026

Grounded RAG Notebooks

A NotebookLM-style app: upload documents, chat with grounded RAG answers, and generate studio artifacts such as summaries, mind maps, quizzes, flashcards and reports.

Next.js 16React 19SupabasepgvectorLangGraph
// LangGraph agents with a durable, async artifact pipeline

Personal · Open Source · Jun 2026

Self-Healing Content System

Detects when upstream Google Cloud docs change, traces which GCP certification practice questions are affected, and proposes AI fixes for human review.

Next.jsSupabaseVercel CronVercel AI SDKOpenRouter
// Change detection → provenance impact analysis → AI healing → human review

//Engineering in Practice

Pinned on GitHub: side projects, agentic experiments, and the GoodParty.org platform I led.

thegoodparty /

gp-api

NestJS API for goodparty.org: the strictly typed backend I architected and led.

thegoodparty /

gp-sdk

TypeScript SDK for the gp-api, giving shared, end-to-end type-safe API contracts.

$ open github.com/RavenHursT ↗

//Engineering Journey

  1. Jul 2026 – Present

    Staff Software Engineer @ OpenLoop

    Led the refactor of an acquired single-tenant stack to multi-tenant white labeling (data model, API and React UI, with Retool for admin) in ~3 months with two other engineers

  2. Mar 2026 – May 2026

    Lead Software Engineer – Platform @ GoodParty.org

    Led the platform team on cross-functional platform features

  3. Mar 2024 – Mar 2026

    Senior Software Engineer @ GoodParty.org

    Architected and led a full backend rebuild from Sails.js to TypeScript + NestJS + Prisma + Zod, with SST/GitHub Actions/Playwright CI/CD

  4. Oct 2018 – Apr 2023

    Sr. Software Engineer @ HEAVY.AI (OmniSci / MapD)

    Championed, architected and built a Go/Echo web services layer over Apache Thrift for a GPU-RDBMS analytics platform

  5. Feb 2021 – Nov 2022

    Sr. Software Engineer (Contract) @ Lexima.io

    Principal engineer and architect for cluster.byheart.com on Next.js and GCP, including cold-start tuning and Segment/Klaviyo/Contentful pipelines

  6. Apr 2018 – Sep 2018

    Sr. Software Engineer @ eFlex Systems

$ cat full-history.md

//Kind Words

From managers, peers, and engineers I've mentored.

“
Matthew is one of those engineers who knows how to spot the problems other people are overlooking in a plan. He seems to see around corners and I'm glad to have had him on my team. If you need someone you can count on to solve big problems and never complain about it being unfair - Matthew's your guy.

Sam Hughes

CTO / Fractional CTO · Ex-MSFT, Ex-GoDaddy

“
Matt is a highly skilled engineer, technical leader, and product-minded user champion. His leadership in technical vision, architectural direction, complex problem solving, and robust, maintainable code elevates the entire team. His intentional mentorship inspires the kind of hardcore skill-building that creates world-class engineers.

Nikao Hill

Software Engineer · Performance-Critical Services

“
His technical abilities far surpass most engineers that I've worked with in my career. This involves design, architecture, implementation and knowledge of libraries, frameworks etc. Overall, Matthew is a phenomenal engineer and its always a privilege working with him.

Anindo Mukherjee

Principal Engineer, Google Gemini Enterprise

/* currently available */

Looking for a Staff or Principal engineer who ships?

I'm open to remote Principal Software Engineer, Senior Staff Software Engineer, Staff Software Engineer and architect roles.