Senior Machine Learning Engineer, Pegasus

Who we are

At TwelveLabs, we are pioneering the development of cutting-edge multimodal foundation models that have the ability to comprehend videos just like humans do. Our models have redefined the standards in video-language modeling, empowering us with more intuitive and far-reaching capabilities, and fundamentally transforming the way we interact with and analyze various forms of media.

With a $110+ million in Seed and Series A funding, our company is backed by top-tier venture capital firms such as NVIDIA’s NVentures, NEA, Radical Ventures, and Index Ventures, and prominent AI visionaries and founders such as Fei-Fei Li, Silvio Savarese, Alexandr Wang and more. Headquartered in San Francisco, with an influential APAC presence in Seoul, our global footprint underscores our commitment to driving worldwide innovation.

Our partnership with NVIDIA and AWS gives us access to the most advanced chips, including B300s, enabling us to push the boundaries of what's possible in video AI.

We are a global company that values the uniqueness of each person’s journey. It is the differences in our cultural, educational, and life experiences that allow us to constantly challenge the status quo. We are looking for individuals who are motivated by our mission and eager to make an impact as we push the bounds of technology to transform the world. Join us as we revolutionize video understanding and multimodal AI.

About the Team

The Pegasus team sits at the core of TwelveLabs' video understanding capabilities and is responsible for driving Pegasus, our Video Analysis product. Our focus is on developing multimodal video analysis systems that are designed for high instruction following capability and producing highly complex, hierarchically structured outputs. We focus on shipping products with real-world value rather than doing research in isolation, and we work in a goal-oriented, cross-functional team that encompasses both ML researchers and engineers.

Our work covers a broad range of challenges: large-scale distributed training of multi-modal LLMs that span from pre-training to RL, accurate temporal segmentation and structured metadata extraction for real-world use cases, extending temporal context length to multiple hours, and data curation processes that enable well-aligned evaluation and performance improvements through training data enhancements.

Our team has access to the most advanced chips in the world, including NVIDIA B300s, to push the boundaries of video analysis systems—accelerating our research-to-production cycle as fast as possible.

In this role, you will

• Lead complex ML systems work across Pegasus from design through production, especially in areas with greater technical ambiguity or system complexity.

• Make strong design and architectural decisions across deployment, inference, evaluation, monitoring, and ML infrastructure within your domain.

• Improve critical parts of the ML lifecycle so research advances can be integrated into production quickly and reliably.

• Drive improvements to model serving, inference architecture, and ML workflows for Video Language Models (VLMs) in production.

• Support other engineers through technical guidance, design reviews, and strong engineering judgment.

• Explore and adopt AI-assisted development tools such as Claude, Gemini, and GPT to improve productivity across coding, experimentation, debugging, and documentation.

You may be a good fit if you have

• Significant experience building and productionizing ML systems as a hands-on individual contributor.

• Experience independently owning technically complex ML projects end-to-end.

• Strong foundations in machine learning and experience with multimodal systems such as vision, language, or video-based models.

• Experience designing or operating distributed ML or data systems, ideally in Kubernetes-based environments.

• Strong technical judgment in system design, performance tradeoffs, reliability, and production operations.

• Strong communication skills and a track record of supporting other engineers through technical guidance.

Preferred qualifications

• Experience serving or optimizing LLM/VLM systems in production, including inference optimization, throughput and latency tuning, batching, caching, or quantization.

• Experience designing and operating mission-critical AI/ML applications from 0 to 1 and scaling them in production.

• Experience with large-scale training or serving infrastructure for ML systems, including high-performance GPU environments.

• Master’s or PhD in Machine Learning, Computer Science, or a related technical field.

Hiring Process

Application Review → Recruiter Interview (비대면/30분) → Coding test → Hiring Manager Interview(비대면/30분) → Live Coding Test Interview (대면/135분) → System Design(비대면/105분) → Final Round 인터뷰(비대면/30분) → Reference Check → Offer

Benefits and Perks

• 글로벌 B2B 고객과 함께 성장하는 Global Team

• 자율성과 협업을 모두 갖춘 하이브리드 근무

• 전 직원에게 맥북 및 70만 원 상당 재택근무 장비 지원, 3년 주기로 최신 장비 교체

• 식사·교통비 등 자유롭게 사용할 수 있는 월 60만 원 한도 법인카드 제공

• 사무실 내 스낵바(간식, 커피, 신선식품 제공)

• 연말 2주간 겨울방학 운영

• 연 1회 건강검진 지원

• 영어교육 프로그램 지원