Senior Fullstack Engineer (AI)

TL;DR

Senior Fullstack Engineer (React/TypeScript/Python/Go): Building foundational product features and growth systems for the hirify.global platform with an accent on user acquisition, monetization, and self-serve expansion. Focus on designing experimentation systems, optimizing onboarding flows, and implementing usage-based billing guardrails.

Location: On-site 5 days/week in New York City, San Francisco, or Boston

Salary: $175,000–$240,000 USD

Company

AI platform providing the foundation for agent engineering, helping developers build, evaluate, and deploy production-ready AI agents at scale.

What you will do

• Develop full-stack features using React, TypeScript, Python, and Go to drive growth and retention
• Create flexible experimentation systems to target diverse growth metrics
• Design and implement onboarding improvements to accelerate time to value
• Build growth levers including usage-based guardrails and smart upgrade triggers
• Collaborate with product, design, GTM, and analytics teams to execute high-impact growth opportunities

Requirements

• Extensive fullstack experience with React, TypeScript, and Go or Python
• Proven track record in building monetization, pricing, or activation features
• Proficiency with REST APIs, Postgres, Redis, and modern backend infrastructure
• Experience thriving in fast-paced, 0→1 startup environments
• Must be based in or work on-site in New York, San Francisco, or Boston

Nice to have

• Experience building for developers or product-led growth (PLG) platforms
• Familiarity with LLMs, GenAI applications, or agentic frameworks

Culture & Benefits

• Comprehensive medical, dental, and vision coverage
• Flexible vacation policy
• 401(k) plan
• Meals provided on in-office days in the US