Senior Full-stack AI Engineer (Vietnam based only)

Category: Technology

Location:

Location: Vietnam (Remote)

Employment Type: Full-time

About the Opportunity

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.

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Key Responsibilities

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

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

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

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

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

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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.

Requirements

Technical skills:

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5+ years of production experience in Node.js and TypeScript.

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

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

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

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

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

Preferred Qualifications:

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Bachelor’s degree in Computer Science, Engineering, or equivalent

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Background in conversational commerce, personalization, or consumer web CRO.

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Deployment experience on AWS and Vercel serverless/edge runtimes.

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Familiarity with RAG , vector databases , and retrieval pipelines .

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

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

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

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Knowledge of WCAG AA accessibility for voice and conversational UIs.

Benefits

- Competitive salary paid in USD.

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Social insurance coverage in accordance with Vietnamese regulations.

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20 annual leave days plus 10 public holidays per year.

- Company-provided laptop.

- 100% remote working environment.

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Sponsored training, workshops, and industry conferences.

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

How to Apply

Send your updated resume

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

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ngoc.tran@sunbytes

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Zalo/Phone number: +84 (0) 945 555 790

Details

Originally posted on Himalayas