Mandarin-speaking: Customer Success Engineer (Contract)

Retell AI•San Francisco, CA

9d•$6,000 - $7,500•Remote

About The Position

Retell AI is seeking a Mandarin-Speaking Customer Success Engineer on a long-term 1099 contract basis to assist enterprise clients in successfully deploying and scaling AI voice agents in production. This role involves working directly with customers to build AI voice agents, design integrations, troubleshoot deployments, and resolve technical challenges. The position operates at the intersection of software engineering, customer success, and AI deployment, requiring close collaboration with Engineering, Product, and Customer Success teams, as well as direct partnership with customer technical teams.

Requirements

Must be able to read, write, and speak in Mandarin and English.
Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, or a related technical field.
2-8 years of professional software engineering experience, with a strong backend focus (e.g., building and maintaining services, APIs, and data pipelines in production).
Strong backend fundamentals: ability to write clean, working code (Python, Node.js, or similar), design and integrate REST/webhook APIs, work with databases, and understand system design, authentication, and error handling.
Able to pass a hands-on backend technical assessment (live coding or take-home) without relying on AI tools.
Proven ability to debug complex issues across systems by reading logs, tracing requests, and isolating root causes in customer integrations.
Excellent communication skills: ability to explain technical concepts clearly to both engineers and non-technical stakeholders, and work directly with customers to scope and build solutions.
Must be available to work some overlapping hours with our Pacific Time-based team and customers.

Nice To Haves

Prior Solutions Engineering, Forward Deployed Engineering, or Customer Success Engineering experience.
Experience with AI, LLMs, or Voice AI.
Startup experience.
Enterprise customer experience.
Willingness to travel occasionally for customer launches or onsite work.

Responsibilities

Support technical onboarding and deployment for enterprise customers.
Help customers launch and scale AI voice agents.
Build trusted relationships with customer engineering teams.
Build AI voice agents alongside customers.
Design conversation flows and deployment strategies.
Debug APIs, webhooks, SIP, telephony, authentication, integrations, and latency issues.
Troubleshoot production deployments and technical issues.
Work directly in customer codebases when needed.
Identify product gaps through customer feedback.
Translate customer needs into actionable product improvements.
Work closely with Product and Engineering teams.
Help customers launch new AI use cases.
Identify opportunities to expand product adoption.
Become a trusted technical partner to enterprise customers.