Hark logoHark logo

Mid-Level Technical Staff Member for AI Training Development

HarkSan Jose New
On-site Full-time

Clicking Apply Now takes you to AutoApply where you can tailor your resume and apply.


Experience Level

Mid to Senior

Qualifications

Requirements Strong foundation in machine learning with hands-on experience in training or fine-tuning large models—LLMs, multimodal, or equivalent systems. Deep knowledge of reinforcement learning, including policy optimization, reward design, exploration, and the interaction between environment design and agent behavior.

About the job

About Hark

Hark is at the forefront of artificial intelligence, dedicated to creating sophisticated, personalized intelligence systems. Our technology is proactive, multimodal, and designed to interact seamlessly with the world through speech, text, vision, and persistent memory.

We are revolutionizing the AI landscape by integrating this intelligence with cutting-edge hardware, establishing a universal interface between humans and machines. Unlike traditional AI, which relies on outdated chat interfaces and devices, Hark is pioneering the future: agentic systems that communicate naturally with individuals and their environments.

To achieve this vision, we are collaboratively developing multimodal models alongside next-generation AI hardware, engineered from inception as a cohesive interface for the new era of intelligent systems.

About the Role

We are seeking a Mid-Level Technical Staff Member specializing in AI training to spearhead the development of innovative training strategies that effectively connect pre-training and post-training phases. This role is crucial in shaping how our models gain advanced reasoning, planning, and tool-utilization skills at scale.

You will be instrumental in the core of model capability development, determining how data, algorithms, and systems converge to unlock the next level of agent behavior.

Responsibilities

  • Design and implement mid-training strategies to enhance agent capabilities such as reasoning, planning, tool usage, and long-term decision-making.
  • Scale synthetic data generation pipelines (e.g., coding, agent trajectories, multimodal data) and optimize data mixtures to boost downstream reinforcement learning performance.
  • Construct and optimize distributed training pipelines for large models, ensuring efficiency, stability, and scalability across GPU clusters.
  • Develop and refine evaluation frameworks to assess model capabilities (e.g., task success, reasoning quality, tool usage accuracy) and guide training refinements.
  • Conduct comprehensive experimentation and ablations to clarify training dynamics, scaling behavior, and identify bottlenecks.
  • Collaborate across functions with pre-training, post-training, and product teams to synchronize model development with practical agent applications.
  • Lead technical innovations in areas such as long-context learning, data distillation, and training efficiency, contributing to the overall model roadmap.

About Hark

Hark is an innovative AI company that aims to redefine how intelligent systems interact with humans. By merging advanced artificial intelligence with next-generation hardware, we are creating a universal interface that allows for natural communication and interaction between machines and people.

Similar jobs

Browse all companies, explore by city & role, or SEO search pages.

Tailoring 0 resumes

We'll move completed jobs to Ready to Apply automatically.