AI Research Engineer: Agentic Post-Training (Remote)

YO AI Labs; Municipio de Rincón de los Sauces; Remote; ARS 185,819,000 - 294,213,000; Full time

Job summary

Tether is seeking an AI Research Engineer (Agentic Post-training) to advance post-training methods for agentic workflows and tool invocation, with a focus on edge devices. This remote role spans global teams and cutting-edge AI challenges.

You will work on multimodal systems and large language model architectures, refining data pipelines, training workflows, and evaluation suites while pursuing publications and open-source contributions.

Qualifications

• Degree in Computer Science, Machine Learning, or a related field; advanced degree (MS/PhD) preferred.
• Strong publication record in top-tier AI conferences.
• Experience with multimodal post-training workflows and data pipelines.
• Hands-on experience applying post-training at scale using distributed training frameworks.
• Proven track record of open-source contributions related to agentic systems or tool use.

Responsibilities

• Conduct end-to-end research to advance post-training of agentic and tool-use models to SOTA results.
• Drive cross-cutting model improvements, including factuality, instruction adherence, tool use, multi-agent coordination, and reasoning calibration.
• Design and enhance large-scale post-training systems, including data pipelines, training workflows, evaluation frameworks, and benchmark infrastructure.
• Develop rigorous evaluation suites and diagnostic tools to assess model readiness for deployment.
• Strengthen feedback loops from real-world product usage, incorporating user signals into post-training.
• Collaborate with tooling, product, and training teams to improve usefulness and reliability of frontier models.
• Liaise with research, engineering and cross-functional teams to determine production-ready integrations for major releases.

Skills

LLM architectures

Agentic workflows

Tool use

Reinforcement learning

Multimodal models

Education

Degree in Computer Science, ML or related field; MS/PhD preferred

Tools

GitHub

Hugging Face

Job description

Tether is seeking an AI Research Engineer (Agentic Post-training) to advance post-training methods for agentic workflows and tool invocation, with a focus on edge devices. This remote role spans global teams and cutting-edge AI challenges.

You will work on multimodal systems and large language model architectures, refining data pipelines, training workflows, and evaluation suites while pursuing publications and open-source contributions.