---
title: 'Principal Web Developer (Rails) at Superconductor'
canonical: 'https://feeny.ai/job/principal-web-developer-rails-superconductor-east-bay-j4z61gwqqwar'
type: 'job'
last_seen: '2026-11-03'
---

# Principal Web Developer (Rails) at Superconductor

- **Company:** Superconductor
- **Location:** East Bay, CA
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-03-06
- **Last confirmed live:** 2026-11-03
- **Apply:** https://jobs.ashbyhq.com/superconductor/806417c7-52c3-4820-b059-74b35ef2cf2f

## Job description

## About Superconductor

Superconductor is building the autonomous software organization — a platform where agents don't wait for instructions, but find work everywhere: in customer emails, bug reports, session replays, Slack threads, X posts, etc. Agents that work while you sleep. We're a team of 7, backed by $7M in funding, and we intend to stay below ~25 humans hopefully forever. That means every hire matters enormously, and we compensate accordingly with highly competitive salary and equity. We have been building software together for over a decade. We formerly co-founded Gradescope, an AI-powered education grading platform used by millions of students worldwide. Previously, we were AI PhD students at UC Berkeley. All in all, we are four developers, one designer, and two generalist operators, and we all wear multiple hats every day.

## Our Values

- Customer obsession. We see every customer interaction — every support email, every bug report, every piece of feedback — as a chance to earn trust and build something better. Customer communication is our differentiator, not overhead.
- Speed with stability. We move fast, but we do not break things. We know that if something breaks, we're the ones fixing it — sometimes at night. We'd rather invest in getting it right the first time.
- Living in the future. We use Superconductor to build Superconductor. We adopt our own tools before anyone else and push them until they break. If something feels like the old way of building software, we question it.
- Small team, high standards. Every person on the team has outsized impact, outsized ownership, and outsized responsibility.

Working at Superconductor

- Hybrid from our East Bay office: 3 days in our easily BART-accessible office, 2 days from home.
- However, our agents work 24/7, and there's real value in having humans cover the night shift. If you are an exceptional candidate, please apply even if you're not in the Bay Area.
- Compensation: Highly competitive salary and meaningful equity — we're a small team that plans to stay small.
- Benefits: Flexible PTO, parental leave, health insurance, employee-friendly equity terms, and premium equipment.
- And of course, a practically unlimited token budget!

## The Role

You are the architect, reviewer, and quality guardian for a fleet of AI coding agents. You define the patterns, enforce the standards, and review every meaningful change that ships. You are the last line of defense before code reaches production. You'll work at the intersection of deep Rails expertise and AI-augmented development, directing agents the way a senior architect directs a team — except your team never sleeps and is as good as you make it. A realistic goal: you will ship more quality code to production in your first month than you did in all of 2025.

## What You'll Do

- Review code produced by AI agents for correctness, maintainability, security, and adherence to our standards
- Define and evolve the application architecture, module boundaries, and system design principles that agents follow
- Write architectural decision records, coding standards, and agent instructions that shape how code gets generated
- See customer feedback flow directly into agent-generated tickets and code — and make sure that code is worthy of the customer who asked for it
- Jump into production when things break — you've been the person on-call before and you know how to debug fast under pressure

You Are

- A VERY senior Rails developer with 10+ years of experience (ideally 15+)
- Someone who loves clean code, small methods, clear naming, single responsibility, etc
- Experienced deploying, operating, and being on call for at least one medium-to-large Rails application in production
- Comfortable with DevOps and debugging production incidents
- Excited (not threatened) by the idea that AI writes the code and you shape the outcome

Bonus Points

- Active contributor to the Rails community (conferences, gems, blog posts, open source)
- Experience with React, Tailwind, Stimulus, Turbo, or Hotwire
- A love of AI coding tools (Claude Code, Cursor, Copilot, etc.)

## About Superconductor

## Company Overview
- **One-liner**: Superconductor is building the autonomous software organization — a platform where AI agents automatically find work across customer emails, bug reports, Slack threads, and more, enabling software teams to ship continuously with minimal human intervention.
- **Entity Type**: Private (seed stage, $7M total funding)
- **Headquarters**: East Bay, California, United States
- **Founded**: Not publicly available
- **Founders**: Not publicly available (previously co-founded Gradescope)

## Core Business
- **Primary industry**: AI-powered software development tools and autonomous agent platforms
- **Target customers**: B2B software teams (from startups to enterprises) that want to accelerate development using AI coding agents
- **Mission statement**: “For your AI agents to always be building your ideas, and for you to never be blocked.”

## Products & Services
- **[Superconductor Platform]**: A SaaS platform where teams create tickets from Slack, GitHub, or email, launch multiple AI coding agents (e.g. Claude Code) in cloud environments, review live previews of generated code, and collaborate via a mobile-first interface (iOS/iPad app and Android PWA). Supports multiplayer workspaces, centralized API keys, and guided review to reduce human review burden.

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: $7M in total funding (backed by undisclosed investors)
- **Notable Investors/Partners**: Not publicly disclosed
- **Growth Signals**: Currently in private beta; team of 7 employees with a stated intention to stay below ~25; small size allows outsized impact per hire; building on a track record from prior successful startup (Gradescope)

## Competitive Advantages
- **Multiplayer workspace** – PMs, designers, and developers collaborate with AI agents in real time, kicking off work from Slack and reviewing live previews without checking out branches.
- **Frictionless live previews** – Cloud instances start quickly (under 30 seconds) so teams can instantly see agent output.
- **Guided review** – Proprietary AI-assisted code review process that reduces the time spent reviewing PRs.
- **Mobile-first design** – Fully featured iOS app and Android PWA allow teams to monitor agents and approve work on the go.
- **Centralized agent management** – Workspaces provide shared API keys, integrations, and project environments for all teammates.

## Strategic Focus
- **Autonomous software organization** – Building agents that proactively find work (support emails, bug reports, feature requests) and execute 24/7 without waiting for instructions.
- **Quality over scale** – Intentionally staying a small team (<25) to maintain high standards and deep ownership.
- **Dogfooding** – The company uses Superconductor to build Superconductor, pushing its own tools to the limit.

## Why Work Here
- **Hybrid work model**: 3 days in the East Bay (BART-accessible) office, 2 days remote; night-shift coverage available for exceptional candidates outside the Bay Area.
- **Compensation**: Highly competitive salary and meaningful equity for a small team that plans to stay small.
- **Benefits**: Flexible PTO, parental leave, health insurance, employee-friendly equity terms, premium equipment, and a practically unlimited token budget for AI usage.
- **Engineering culture**: Customer obsession, speed with stability, living in the future (using own tools), and high standards with outsized responsibility. The team consists of four developers, one designer, and two generalist operators — everyone wears multiple hats.
- **Open roles**: Principal Web Developer (Rails) and Head of Developer Relations — both focused on architecting and quality-guarding code produced by AI agents.

## Sources
1. [Superconductor Careers Page](https://www.superconductor.com/careers)
2. [BuiltIn Company Profile](https://builtin.com/company/superconductor)
3. [Superconductor Docs – Welcome](https://www.superconductor.com/docs/)
4. [Why We Built Superconductor Blog](https://www.superconductor.com/blog/why-we-built-superconductor)
5. [GitHub Organization](https://github.com/Superconductor)

## Other roles at Superconductor

- [Head of Developer Relations](https://feeny.ai/job/head-of-developer-relations-superconductor-east-bay-wdgb0rbzgnr1) — East Bay, CA
- [Agent Maestro](https://feeny.ai/job/agent-maestro-superconductor-east-bay-31959r9caa8e) — East Bay, CA