Full Stack Developer

Magellan AI

. Add new features to the Ruby on Rails application across the full stack .

Posted 11/3/2026full-timeRemote • New York • United StatesMid-LevelSenior💰 $100,000 - $140,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Ruby on Rails application development, with a strong focus on Agile methodologies, TDD, and refactoring. Capable of collaborating across teams to design and implement AI-driven solutions while maintaining high code quality and clear documentation.

Highest-signal resume keywords

Ruby On RailsAgile Web DevelopmentTest-Driven Development (TDD)AI Coding AgentsPostgres

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software DevelopmentRefactoringSQLWeb ScrapingArchitecture Decision Records (ADRs)Product DocumentationPerformance TroubleshootingCLI HelpersTurboStimulus

Soft Skills

CollaborationClear WritingProblem-SolvingSelf-DirectionOperational Support

Tools & Technologies

ClickHouseAI Coding AgentsAd Intelligence MCP ServerAgile ProcessScripting

Industry Keywords

Ad TechMCP ServersLLM-Facing APIsPodcasting

Tech Stack

Tools & technologies

PostgresPythonRubyRuby on RailsSQL

About the role

Key responsibilities & impact

Add new features to the Ruby on Rails application across the full stack
Collaborate with operations and sales to design professional, practical solutions
Direct AI coding agents by framing problems, specifying constraints, reviewing output line by line, and simplifying solutions when appropriate
Own delivered results regardless of who wrote the code
Improve system and code quality through TDD and refactoring
Write specifications, 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
Improve usability through Turbo, Stimulus, and other front-end enhancements
Troubleshoot performance and complex logic across Postgres and ClickHouse
Simplify the system through sound design decisions
Experiment with stopgap solutions including scripting, SQL exports, and web scraping
Share operational support to keep the system running and address bugs
Participate in internal hackathons for novel solutions and feature enhancements
Work within a lightweight Agile process and self-direct development work
Deploy code regularly, usually daily
Participate in code reviews, team retrospectives, and QA enablement

Requirements

What you’ll need

3+ years of software development experience
Expertise with Agile web development, with practices such as TDD and Refactoring
Fluency working with AI coding agents day to day, or the obvious appetite for it
Ability to review AI-generated code rather than trusting it
Clear writing for specs, 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

Comp & perks

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