Fullstack Developer (AI)

Location: On-site in San Francisco, Levi’s Plaza

Company

hirify.global is a fast-growing AI product lab and the creator of Design Arena, a platform used by over 5 million users to evaluate state-of-the-art multimodal AI models.

What you will do

• Own products end-to-end across the full stack, from design through deployment.
• Build and scale distributed systems and platform infrastructure to support millions of real-time interactions.
• Run A/B tests and experiment with human-model interaction experiences.
• Collaborate with the founding designer to ship new product capabilities.
• Continuously iterate on features based on user feedback and performance data.

Requirements

• Proven experience building user-facing applications, backend services, or distributed systems in production.
• Strong focus on performance, reliability, and low latency.
• Passion for end-to-end product ownership and solving real user problems.
• Must be able to work on-site in San Francisco.
• Visa sponsorship and relocation support are available.

Nice to have

• Portfolio or examples of products you have built and are proud of.

Culture & Benefits

• Competitive salary and meaningful equity package.
• Opportunity to join a high-growth, talent-dense startup at an early stage.
• Work schedule: Sunday through Friday (Saturdays off).
• Exposure to cutting-edge frontier AI models before they are released to the public.