Senior/Lead AI Engineer (Legal Platform)

Masan Group is digitizing and standardizing how core corporate functions operate across the Group and its subsidiaries (WinCommerce, Masan Consumer, Masan MEATLife, Phúc Long, WinX). The Legal Transformation program is building a centralized legal technology platform — contract lifecycle management, entity and corporate records, matter management, compliance tracking, and document automation — for a high-volume, multi-entity, bilingual legal function.

You will be the AI engineer of this program: the person who decides where AI genuinely adds value in legal workflows, builds it, and gets it adopted. You work independently — there is no AI team behind you on this program. That means full ownership from problem framing to production, and it means your judgment carries real weight.

Key responsibilities

• Own the AI workstream of the Legal Transformation program end-to-end: identify high-value use cases with legal stakeholders, scope them, build them, ship them
• Design and build LLM-powered capabilities for Legal: contract review and risk extraction, clause comparison, document drafting assistance, legal Q&A over Group knowledge, compliance monitoring
• Build RAG pipelines over a bilingual (Vietnamese/English) legal corpus — OCR and parsing of scanned contracts, chunking, embedding and retrieval quality, citation grounding
• Own evaluation and guardrails: build eval sets with legal SMEs, control hallucination, set accuracy thresholds appropriate for legal content, design human-in-the-loop review
• Integrate AI capabilities into the legal platform stack (CLM, document repositories, e-signature) alongside the program’s software and vendor teams
• Handle sensitive data properly: access control, confidentiality safeguards, audit trails
• Communicate across both worlds: run discovery workshops with lawyers, explain AI capabilities and limits to business leadership in plain language, and work technical details with engineers and vendors — in both Vietnamese and English.

Requirements

• 5+ years in software/ML engineering, including 2+ years building LLM applications in production (not prototypes) — RAG, agents, or fine-tuned systems with real users
• Proven ability to work as the sole AI engineer: you’ve owned an AI capability end-to-end (framing → build → deploy → iterate) without a team of peers to lean on
• Strong Python; hands-on with LLM APIs, orchestration frameworks, and vector databases
• Evaluation discipline: you can show how you measured quality and controlled hallucination — not just that you “used GPT/Claude”
• Production engineering fundamentals: CI/CD, monitoring, latency and cost optimization
• Excellent communication in both Vietnamese and English — you can present to non-technical legal and business leaders, run requirement discussions with lawyers, and hold technical conversations with engineers, comfortably in either language

Bonus Points

• Document AI experience: OCR, layout-aware parsing, information extraction from contracts or forms
• Exposure to legal, contract, or compliance workflows, or LegalTech/CLM platforms
• Vietnamese NLP experience
• Work in regulated or high-confidentiality environments (banking, insurance, healthcare)

Why this role

• Your work becomes the standard. You are not implementing someone else’s blueprint — the processes, data model, and delivery playbook you shape here will define how Legal operates across Masan’s entire ecosystem, and will be reused as the Group digitizes its next functions.
• Breadth few AI roles can offer. You work at the intersection of law, technology, and business across retail, consumer goods, F&B, and more — with direct exposure to senior leaders at both Group and subsidiary level.
• A roadmap, not a project. The Legal platform is the first of several function-transformation platforms. For someone who thrives on new challenges, this role is designed to grow — from one platform to the broader transformation agenda.