Senior Recruiter, Machine Learning(US)

About the Role A1 is building a proactive AI chat app for everyday users to bring intelligence to conversations, errands, organising and workflows. Unlike traditional chat-based applications, our product focuses on achieving high reliability for long-running workflows, persistent context, and real-world task completion. The system must handle multi-step reasoning, interact with external tools, and remain reliable despite non-deterministic model behavior. As Senior Recruiter, Machine Learning, you will lead hiring for machine learning and AI research functions globally. You will work closely with founders and technical leadership to identify exceptional ML engineers and researchers across applied AI, infrastructure, model training, evaluation, and systems. This role requires deep understanding of technical talent quality, strong sourcing capability, and the ability to operate at high speed in highly competitive hiring markets. What You'll Be Doing • Lead end-to-end hiring for machine learning and AI-related roles globally • Source and engage high-caliber ML engineers and researchers across global talent markets • Partner closely with founders and technical leaders on hiring strategy and talent calibration • Evaluate technical profiles across machine learning, distributed systems, training infrastructure, and AI applications • Build long-term pipelines across universities, research labs, startups, and leading technology companies • Drive hiring process quality, speed, and candidate experience • Continuously refine sourcing strategies and market intelligence across the AI landscape What You'll Need • Proven experience recruiting machine learning, AI, or highly technical engineering talent • Strong understanding of the AI and ML talent landscape • Ability to assess technical depth and candidate quality beyond credentials and company brands • Strong sourcing, research, and talent mapping ability • Excellent communication and stakeholder management skills • Comfortable working in fast-moving and highly competitive environments • High ownership, persistence, and execution ability How We Work The best products in the world are built by small, highly capable teams. We operate with high talent density, fast execution speed, and strong ownership. We care deeply about product quality, clear thinking, and practical execution. This is a hands-on environment. Everyone is expected to contribute directly, operate independently, and make good decisions under ambiguity. Interview Process If there appears to be a fit, we will schedule up to 4 interviews. Applications are reviewed directly by our team. Interviews are conducted virtually and/or onsite depending on location. We value speed, clarity, and direct communication throughout the process.