Lead Senior Engineer (Ruby on Rails)

AI-powered content platform that blends cutting-edge AI with human expertise for brand content creation.
$120,000 - $170,000
Backend
Senior Software Engineer
In-Person
1 - 10 Employees
6+ years of experience
AI · Enterprise SaaS

Description For Lead Senior Engineer (Ruby on Rails)

Luthor.ai is revolutionizing content marketing with an AI-enhanced platform that combines cutting-edge technology with human expertise. As their first full-time engineering hire, you'll work directly with the CEO and CTO to build the foundation of their platform. This role offers a unique opportunity to shape both the technical architecture and engineering culture of a fast-growing startup.

The position requires a senior engineer with strong Ruby on Rails expertise and experience with modern web technologies. You'll be responsible for architecting and developing scalable backend systems, implementing APIs, and shipping features that directly impact customers. The ideal candidate should have 6+ years of experience and be comfortable working in a fast-paced startup environment where priorities can shift quickly.

What makes this role special is the combination of technical challenges and direct impact. You'll be working at the intersection of AI and content creation, building tools that empower creative teams while helping establish Luthor.ai as a leader in AI-driven tools for Ruby developers. The company offers competitive compensation ($120K-$170K) plus equity (0.10%-1.00%), and the opportunity to work closely with technical founders.

The interview process is streamlined and respectful of candidates' time, consisting of three focused conversations with the founders. If you're passionate about AI, content creation, and want to be part of building something innovative from the ground up, this role offers the perfect blend of technical challenges, ownership, and growth potential.

This is an in-person position in the San Francisco Bay Area, with relocation assistance available. You'll be joining a small but ambitious team of 2 founders, with the opportunity to help grow and shape the engineering team as the company expands. The role requires someone who can thrive in ambiguity, take ownership of projects, and balance quick shipping with maintainable code.

Last updated 4 days ago

Responsibilities For Lead Senior Engineer (Ruby on Rails)

  • Architect, develop, and maintain scalable backend systems
  • Ship features quickly while maintaining clean code
  • Collaborate with writers, editors, and strategists to build workflow tools
  • Build and optimize APIs for front-end and back-end integration
  • Own features end-to-end with iteration based on feedback
  • Establish engineering culture, best practices, and technical direction
  • Contribute to becoming a leader in AI-driven tools for Ruby developers

Requirements For Lead Senior Engineer (Ruby on Rails)

Ruby
TypeScript
  • Several years of professional experience as a software engineer, with expertise in Ruby on Rails, Stimulus, Hotwire, and Tailwind CSS
  • Startup experience or passion for working in fast-paced environments
  • Shipping mentality with focus on delivering functional solutions quickly
  • Interest or experience in AI tools and platforms (OpenAI API, LLMs, embeddings, Pgvector)
  • Autonomous mindset with ability to handle vague requirements
  • Passion for solving complex problems with real-world impact
  • Excitement to work in a scrappy, high-energy team environment

Benefits For Lead Senior Engineer (Ruby on Rails)

Equity
Relocation Benefits
  • Competitive base salary
  • Equity opportunities (0.10% - 1.00%)
  • Work directly with founders
  • High-growth opportunity
  • Relocation assistance

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