Research Scientist (AI)

TL;DR

Research Scientist (AI): Developing and refining cutting-edge audio and video generation models with an accent on post-training optimization, reward modeling, and human feedback integration. Focus on designing robust evaluation frameworks, identifying model failure modes, and implementing targeted interventions to elevate video generation quality.

Location: Onsite in Jerusalem, Israel.

Company

hirify.global is an AI-first company creating next-generation content creation technology, known for pioneering products like Facetune and the open-source generative video model LTX-2.

What you will do

• Develop and implement post-training pipelines including RLHF, DPO, and preference-based optimization.
• Fine-tune and control VLLMs specifically for video and audio understanding.
• Design and iterate on quality evaluation metrics and systematic frameworks.
• Perform failure mode analysis to identify and address model quality gaps.
• Curate high-quality preference datasets and establish benchmarks.
• Collaborate with researchers to create feedback loops between human judgment and model performance.

Requirements

• Master’s degree or equivalent practical experience in computer vision or generative AI.
• Experience with post-training techniques for generative or multimodal models.
• Strong understanding of evaluation methodology and benchmark design.
• Proficiency in software engineering and complex ML training infrastructure.
• Knowledge of statistics, experimental design, and perceptual quality assessment.
• Proven ability to translate subjective quality assessments into actionable model improvements.

Culture & Benefits

• Daily door-to-door shuttles and Car-to-go subscriptions in central Israel.
• Two on-site chef-led restaurants and an in-office bakery.
• Access to professional training workshops and cutting-edge AI tools.
• Emphasis on structured growth and responsible AI usage guidelines.