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Intermediate/Senior AI Engineer, Data & AI Team, Global eCommerce Platform

Intermediate/Senior AI Engineer, Data & AI Team, Global eCommerce Platform

Ho Chi Minh City, Ha Noi · Full-time (Posted 1 month ago)

  • AWS
  • Python
  • Microservice
  • LLMs
  • Senior
  • Mid Level

ABOUT THE ROLE

At Crossian, AI isn’t a buzzword, it’s our business engine. As we target from a $200M data-driven eCommerce platform toward Unicorn $1B, the Data & AI Team leads the charge by building full-stack AI solutions that power real-time recommendations, dynamic pricing, hyper-personalized storefronts, and GenAI-driven customer experiences across millions of transactions.

As an Intermediate or Senior AI Engineer, you’ll be designing and deploying production-grade AI systems that directly move revenue, shape product strategy, and unlock growth across Global markets. Your models should serve for billions of eventslive traffic, and show up in Company-wide KPOs. Beside, from fine-tuning LLMs to crafting recommendation engines, from designing Retrieval-Augmented Generation (RAG) pipelines to launching scalable microservices, you’ll work in the core Business Enablement (BE) squad alongside Product, Tech, and Marketing in a fast-paced, Agile playground where experimentation, ownership, and impact rule the day.

If you’re ready to jump into real-world AI that delivers tangible outcomes in Global eCommerce, Crossian is your start.

 

WHAT YOU WILL DO

1. Senior AI Engineer

  • Lead development of Agentic pipelines for creative assets generation (images, videos, text)
  • Design, build, operate and maintain RAG systems 
  • Define technical architecture, make key design decisions, and set engineering standards
  • Design and manage the knowledge base supporting AI systems.
  • Design evaluation pipeline to ensure performance and quality.
  • Collaborate with product and business teams to translate requirements into technical solutions

2.Intermediate

  • Build and maintain ecommerce chatbot features and conversation flows
  • Implement agentic pipelines for automated creative generation
  • Integrate LLMs with internal systems and external APIs
  • Write tests, documentation, and support production deployments
  • Continuously improve model performance based on user feedback and metrics

 

WHAT WE ARE LOOKING FOR

Essential Qualifications & Skills

  • Bachelor's degree in Computer Science or a related field.
  • 5+ years in software engineering, 3+ years focused on ML/AI systems
  • Strong Python proficiency; experience with LLM frameworks (LangChain, LlamaIndex, or similar)
  • Hands-on experience deploying LLM-based applications to production
  • Familiarity with image/video generation models (Stable Diffusion, DALL-E, Runway, etc.)
  • Solid understanding of prompt engineering, fine-tuning, and evaluation techniques
  • Expertise in designing RAG systems, Agentic pipeline and managing the underlying knowledge base.
  • Expertise in MCP designing for standardized tool integration and inter-agent communication
  • Experience with ecommerce or conversational AI products
  • Language: Professional English proficiency (written and spoken)

Preferred (Not Required)

  • Experience with hosting, managing and fine-tuning in-house LLM models
  • Background in multi-modal AI systems
  • Experience with data visualization tools, such as AWS QuickSight or Grafana.
  • Familiarity with the Agile toolset, such as GitLab, Jira, Confluence, and Slack.

 

WHAT YOU CAN EXPECT

  • Competitive Compensation: Base salary plus performance bonuses
  • Massive AI Playground: Billions of daily events across text, clickstream, images, and payments ready for experimentation.
  • Rapid Career Growth: Clear promotion pathways, GPU credits for side projects, conference budget, and mentorship from senior ML leaders.
  • High-Impact Shipping: Your models serve live traffic, influence eight-digit revenue decisions, and feature in company-wide OKRs.
  • Ownership Culture: You own your code, experiments, and roadmap and have every opportunity to showcase your capabilities.

Crossian

Crossian is a high-growth, technology-driven retailing business.

Founded in 2020, we have grown over 900% in less than four years, driven by innovation and the passion of our people. What began as a start-up has quickly become a dynamic environment where curiosity, collaboration, and bold ideas thrive.

Today, we are on a mission to build direct-to-consumer brands that go beyond transactions - creating lasting value and genuine connections with customers across the globe.

  • Ha Noi

  • 301-500

  • Founded 2020

  • Product

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