Member Of Technical Staff (AI)

TL;DR

Member of Technical Staff (AI): Building and optimizing RL post-training datasets and evaluation frameworks for large-scale models with an accent on synthetic data generation, reward signal design, and long-context performance. Focus on engineering robust data pipelines, running complex ML ablations, and ensuring high-quality model output through scalable infrastructure.

Location: San Francisco, USA (Relocation stipend provided)

Salary: $200k – $550k

Company

hirify.global is a fast-paced, research-driven startup focused on safely deploying AGI through an integrated, hands-on team approach.

What you will do

• Design and build post-training datasets utilizing synthetic generation, self-play, and targeted collection.
• Implement advanced filtering, scoring, and mixture strategies for RL and post-training corpora.
• Build and maintain evaluation frameworks specifically designed to surface long-context failure modes.
• Design reward signals and training environments to drive targeted capability improvements.
• Improve the reliability and observability of post-training data and environment pipelines.
• Collaborate with Product and Research teams to translate high-level capability goals into measurable iteration cycles.

Requirements

• Strong software engineering fundamentals.
• Experience building or operating large-scale data or machine learning systems.
• Proven ability to design and interpret experiments that measure model behavior changes.
• Comfort working at the intersection of machine learning, data systems, and infrastructure.
• Strong attention to data quality and evaluation rigor.
• Track record of owning experimental or production systems end-to-end.

Culture & Benefits

• Equity as a significant component of total compensation.
• 401(k) plan with 6% employer matching.
• Generous health, dental, and vision insurance for employees and dependents.
• Unlimited paid time off.
• Visa sponsorship available.
• Relocation stipend to support your move to San Francisco.