Senior Backend Engineer (Ruby), Plan: Spec-Driven Development

📋 Description

• Senior Backend Engineer on Plan: Spec-Driven Development team. Build intent-to-code loops with
• Own early-stage backend work across flows, APIs, data models, and evaluation systems.
• Collaborate with product/design/users to shape scope and trade-offs; work asynchronously in a

🎯 Requirements

• Strong Ruby on Rails experience in large production codebases; production Python experience.
• Experience leading substantial projects end-to-end with measurable outcomes.
• Product mindset; ability to own features, shape scope, and learn from adoption post-launch.
• Full-stack background with focus on backend; ability to read frontend code and design effective
• API design skills; SQL fundamentals; experience with GraphQL and PostgreSQL performance is helpful.
• Experience exploring AI-assisted development; ability to mentor engineers and lead technical

🎁 Benefits

• Remote, async-first team with weekly syncs and short iterations.
• Career growth, mentorship, and opportunities to influence AI initiatives.