Tech Lead, AI Video Agent

About HeyGen

At HeyGen, our mission is to make visual storytelling accessible to all. Over the last decade, visual content has become the preferred method of information creation, consumption, and retention. But the ability to create such content, in particular videos, continues to be costly and challenging to scale. Our ambition is to build technology that equips more people with the power to reach, captivate, and inspire audiences.
Learn more at www.heygen.com.  Visit our Mission and Culture doc here. 

The opportunity

This Tech Lead, AI Video Agent role is ideal for someone with deep expertise in large-scale system optimization, ranking/search infrastructure, and real-time quality tuning. You’ll lead the development of our AI agent system for video generation - an intelligent assistant powered by large language models (LLMs) and multi-modal understanding, enabling users to create videos through natural interaction and automation.

Key Responsibilities

• System Architecture & Optimization: Design and scale end-to-end systems that power intelligent video agents, with a focus on search, ranking, ads optimization, and personalized content delivery.
• ML & LLM Integration: Work closely with research teams to deploy and fine-tune large language models (LLMs) and multimodal AI systems. Integrate these models into production pipelines for reasoning, planning, and content generation tasks.
• Team Leadership: Lead and mentor a cross-functional team of engineers specializing in infrastructure, ML systems, and product development. Foster a high-performance and collaborative engineering culture.
• AI Agent Development: Drive the development of AI agents capable of planning, reasoning, and executing video creation tasks through prompt orchestration, tool use, and feedback loops.
• Infrastructure & Quality Engineering: Build robust backend services optimized for inference speed, system reliability, and content quality, including real-time evaluation and feedback mechanisms.
• Cross-functional Collaboration: Partner with AI researchers, designers, and product managers to transform cutting-edge models into user-facing product features.

Qualifications

• 7+ years of engineering experience, including 2+ years in a technical leadership or managerial role.
• Proven experience building and optimizing large-scale systems in areas such as ads ranking, search, or recommendation engines.
• Strong background in machine learning system design, including experience deploying and scaling LLMs or generative models in production.
• Familiarity with modern LLMs (e.g., GPT, Claude, PaLM), multimodal models (e.g., Flamingo, Gemini, LLaVA), and open-source frameworks like LangChain, LlamaIndex, or similar agentic toolkits.
• Excellent programming and architectural design skills; experience with backend technologies such as Python, Go, or C++ is preferred.
• Experience building infrastructure for real-time systems, with an emphasis on performance, observability, and scalability.
• Strong collaboration and communication skills, with the ability to translate research innovation into production-ready systems.

What HeyGen Offers

• Competitive salary and benefits package.
• Dynamic and inclusive work environment focused on innovation and creativity.
• Opportunities for professional growth and leadership development.
• A fast-paced, impact-driven culture with direct access to cutting-edge AI applications.
• Access to advanced tools, compute infrastructure, and cross-disciplinary talent.

Base Salary Range
$220,000 to $300,000 annually; Please note that the salary information is a general guideline only. HeyGen considers factors such as scope and responsibilities of the position, candidate's work experience, education/training, key skills, and internal equity, as well as location, market, and business considerations when extending an offer. As part of our total rewards package, HeyGen offers comprehensive benefits including a 401k plan, health benefits, generous PTO, a parental leave program and emotional health resources.

HeyGen is an Equal Opportunity Employer.
We celebrate diversity and are committed to creating an inclusive environment for all employees.

Join us at HeyGen and be part of a team that's reshaping the world of video creation through innovative technology!