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Algorithm Engineer

ClassUp
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Position:
Algorithm Engineer

 

Location:
Beijing China, fully onsite. Being able to speak Mandarin Chinese is required.

 

What You Will Do:

  • We’re reinventing how people learn using cutting-edge AI models. As an Algorithm Engineer, you’ll play a key role in developing core algorithms for a new generation of education products — delivering highly personalized learning experiences to users around the world.
  • You’ll work with the latest advancements in large language models, continuously improving their performance in multimodal, vertical applications through techniques like pre-training, instruction fine-tuning, RLHF, and prompt optimization.

 

What We’re Looking For:

  • 3–5 years of relevant experience and a Master’s degree or higher in Computer Science, AI, Statistics, or a related field
  • Strong analytical and problem-solving skills, with experience building and optimizing models for complex scenarios
  • Solid programming and debugging abilities; deep understanding of machine learning algorithms; proficient in at least one deep learning framework (e.g., PyTorch, TensorFlow)
  • Results-driven mindset with a hands-on approach to applying technology in real-world products
  • Naturally curious, competitive, and resilient — able to thrive in a fast-paced, high-pressure environment
  • Being able to speak Mandarin Chinese is required.

 

Bonus points if you have:

  • Publications in top conferences (e.g., ACL, EMNLP, NeurIPS, ICML, ICLR, CVPR, ICCV, ECCV)
  • Experience with pre-training or fine-tuning large-scale models (10B+ parameters)
  • A track record of deploying LLM applications or AI agents in production

 

What You’ll Gain:

  • End-to-end ownership — from R&D to deployment to user feedback
  • The opportunity to build core AI modules used directly in real student interactions
  • A chance to help redefine what and how humans learn in the age of AI

 

Compensation:
RMB 25,000–50,000/month. For exceptional candidates, compensation is open to negotiation.

 

 

About the Company

 

At Cosmo (formerly known as ClassUp), our mission is to revolutionize K-12 education through technology. We believe every child has the potential to succeed - and with the right tools, they can. 

 

Cosmo 1:1 delivers high-quality and personalized learning at scale. Our AI-enabled learning system creates Personalized Learning Plans, supported by an interactive feedback loop and fun engagement tools. We partner with top US educators to deliver 1:1 online classes using our proprietary, standards-aligned curriculum. 

 

We are constantly innovating to make learning more personalized, joyful, and effective. Cosmo is building the future of education - one student at a time. 

 

Join us in inspiring a lifelong love of learning!