Senior Algorithm Engineer, Large Language Model (Customer Service Chatbot)

Shopee; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

Un leader dans le domaine du commerce électronique recherche une personne passionnée par l'intelligence artificielle pour rejoindre leur équipe de chatbots. Ce rôle implique la conception et le développement d'algorithmes avancés pour améliorer l'expérience du service client. Le candidat idéal aura un solide bagage technique en informatique et sera capable de collaborer efficacement dans une équipe internationale, tout en contribuant à des projets innovants avec une portée mondiale.

Qualifications

• Connaissance des modèles NLP et des systèmes d'agents.
• Expérience en frameworks de deep learning.
• Compétences communicationnelles solides en anglais.

Responsibilities

• Concevoir et développer des algorithmes pour chatbot.
• Participation tout au long du cycle de vie des solutions algorithmiques.
• Optimiser la conception et l'implémentation des systèmes d'agents.

Skills

NLP

Reinforcement Learning

Multimodality

Prompt Engineering

Response Optimization

Education

Bachelor's degree or above in Computer Science

Bachelor's degree or above in Artificial Intelligence

Bachelor's degree or above in Mathematics

Tools

PyTorch

TensorFlow

Python

C++

Go

Job description

We are the Customer Service Chatbot team at Shopee Singapore, dedicated to building multilingual, intelligent dialogue systems to serve a wide range of consumers and sellers. We focus on applying cutting-edge AI technologies such as Large Language Models (LLMs), Agents, and Reinforcement Learning (RL) to customer service scenarios, continuously enhancing interaction intelligence and user experience.

We have successfully developed and deployed an efficient LLM-based chatbot system across multiple markets, significantly improving service quality and response efficiency. In the next phase, we will further explore Agentic Workflow–centric system architectures to evolve from traditional Question Answering to intelligent Agents capable of autonomous planning and execution, delivering more natural, intelligent, and efficient conversational experiences.

Join us in shaping the next generation of intelligent customer service chatbots.

You will be involved in or lead the design and development of core algorithms for our chatbot systems, including but not limited to:

• Prompt engineering and response optimization
• Supervised fine-tuning (SFT) and alignment of LLMs
• Multi-turn dialogue context modeling and state tracking
• Agentic dialogue systems driven by workflow execution
• Retrieval-Augmented Generation (RAG) for Question Answering
• Reward model design and strategy optimization via reinforcement learning
• Agent framework design and implementation

You will also work closely with product, business, operations, and engineering teams, participating throughout the full lifecycle—from problem definition and solution design to deployment and iteration—to ensure the effective and continuous improvement of algorithm solutions.

Requirements:

• Bachelor’s degree or above in Computer Science, Artificial Intelligence, Mathematics, or related fields
• Strong foundation in computer science, algorithms, and data structures
• Familiar with the theory and implementation of mainstream models in at least one of the following areas: NLP, LLMs, RL, Agent systems, or Multimodality
• Proficient in at least one programming language (e.g., Python, C++, Go)
• Experience with at least one deep learning framework (e.g., PyTorch, TensorFlow)
• Strong English communication skills and ability to work in a cross-functional, international team