Senior Full-stack AI Engineer

This is a remote position.

Location: Vietnam (Remote)

Employment Type: Full-time

On behalf of our client we are hiring a Full-Stack AI Engineer to join an innovative product team building next-generation AI-powered customer experiences.

Our client is a fast-growing technology company focused on conversational AI intelligent automation and customer engagement solutions. This role offers the opportunity to work on cutting-edge AI applications that combine large language models (LLMs) real-time voice interactions and modern web technologies to create impactful user experiences at scale.

As a Full-Stack AI Engineer you will be responsible for designing and delivering AI-powered products end-to-end from agent orchestration and backend services to real-time user interfaces and embedded web experiences.

• Design single/multi-agent systems (OpenAI & Anthropic) with robust routing tool calling state and recovery logic primarily using Vercel AI SDK.
  

• Build low-latency real-time voice pipelines (streaming STT/TTS emotion-aware responses sub-second turn-taking and clean barge-in handling).
  

• Operate the WebRTC-based real-time transport layer (audio rooms agent workers and session lifecycles).
  

• Build Model Context Protocol (MCP) servers/clients to securely connect databases; implement agentic browser automation to execute real-world tasks.
  

• Deliver end-to-end features using (TypeScript) and React/Svelte streaming agent states over AG-UI and shipping embeddable widgets.
  

• Tune for latency cost and reliability (streaming caching fallbacks) ; set up tracing (Langfuse OpenTelemetry) implement prompt-injection & PII defenses and run online A/B tests.
  

• 5 years of production experience in and TypeScript.
  

• Hands-on LLM experience (tool calling structured outputs multi-step orchestration context management) ideally with Vercel AI SDK.
  

• Production experience in real-time voice/streaming media (STT/TTS turn detection latency tuning) and WebRTC infrastructure.
  

• Familiarity with agent protocols (MCP AG-UI) and agent-driven browser automation.
  

• Strong React or Svelte skills with advanced TypeScript and comfort building framework-agnostic embeddable components.
  

• Grasp of prompt engineering agent evaluation non-deterministic debugging and security-first development (input validation prompt-injection defense secrets management least-privilege).
  

• Bachelors degree in Computer Science Engineering or equivalent
  

• Background in conversational commerce personalization or consumer web CRO.
  

• Deployment experience on AWS and Vercel serverless/edge runtimes.
  

• Familiarity with RAG vector databases and retrieval pipelines.
  

• Experience embedding JS into third-party funnels and multi-tenant environments.
  

• LLM observability (Langfuse OpenTelemetry) and online A/B testing.
  

• Experience with model routing fine-tuning and model cost-benefit trade-offs.
  

• Knowledge of WCAG AA accessibility for voice and conversational UIs.
  

• Competitive salary paid in USD via (EOR model).
  

• Social insurance coverage in accordance with Vietnamese regulations.
  

• 20 annual leave days plus 10 public holidays per year.
  

• Company-provided laptop.
  

• 100% remote working environment.
  

• Sponsored training workshops and industry conferences.
  

• Clear career growth opportunities with support from both local & international teams.
  

Send your updated resume to

For more details contact:
Ngoc Tran (Ta Hy) - Recruitment Consultant

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• Zalo/Phone number: 84 (0)