Full Stack Developer
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Job Description
Full-stack developer expanding Magellan AI’s podcast advertising intelligence and measurement platform. Building Rails features, AI-facing APIs, and data workflows with supervised coding agents.
Responsibilities:
- Add new features to the Ruby on Rails application across the full stack
- Work with operations and sales to design professional, practical solutions
- Direct AI coding agents by framing problems, specifying constraints, reviewing output, and owning results
- Improve system and code quality through TDD and refactoring
- Write specs, architecture decision records, and product documentation
- Extend internal tooling, including skills, subagents, and CLI helpers
- Build AI-facing product surfaces such as the Ad Intelligence MCP server, including authentication, policy gates, and audit logging
- Enhance existing feature usability with Turbo, Stimulus, and other front-end improvements
- Troubleshoot and fix performance issues and complicated logic across Postgres and ClickHouse
- Simplify the system through sound design decisions
- Experiment with stopgap solutions, scripting, SQL exports, and web scraping
- Provide operational support and address bugs during normal business hours
- Participate in internal hackathons
- Collaborate through Agile development, collective code ownership, regular deployments, and retrospectives
Requirements:
- 3+ years of software development experience
- Expertise with Agile web development, including practices such as TDD and refactoring
- Fluency working with AI coding agents day to day, or obvious appetite for it
- Ability to review AI agent output rather than trusting it
- Clear writing for specifications, ADRs, and documentation read by non-engineers
- Nice to have: Ruby on Rails
- Nice to have: ClickHouse
- Nice to have: Python
- Nice to have: NYC-based
- Nice to have: Experience designing MCP servers or other LLM-facing APIs
- Nice to have: Background in ad tech
- Nice to have: Interest in the podcasting world
Benefits:
- Competitive base salary and bonus structure
- Medical, dental, and vision coverage; individual coverage is free
- Company-subsidized family coverage
- Home office improvement reimbursement up to $500 per year
- Company laptop and external monitor
- 11 company holidays
- 20 PTO days for vacation, illness, and personal time
- Off-site retreats
- Generous options grant
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