---
title: 'Customer Success Engineer (contract based) at FriendliAI'
canonical: 'https://feeny.ai/job/customer-success-engineer-contract-based-friendliai-seoul-9ang4dybr9c9'
type: 'job'
last_seen: '2026-09-05'
---

# Customer Success Engineer (contract based) at FriendliAI

- **Company:** FriendliAI
- **Location:** Seoul, South Korea
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-04-17
- **Last confirmed live:** 2026-09-05
- **Apply:** https://jobs.ashbyhq.com/friendliai/11f5ea91-9775-48a8-aca6-0438de737fd7

## Job description

## ABOUT THE JOB

FriendliAI is seeking a Customer Success Engineer to act as the technical liaison between our customers and the engineering team behind our large-scale AI inference platform. You’ll help developers and enterprises deploy, scale, and optimize generative and agentic AI workloads running on FriendliAI infrastructure.

In this role, you will act as a trusted technical advisor to our users, ensuring smooth onboarding, ongoing support, and optimal product usage. You will collaborate across product, engineering, and support teams to represent the customer's voice and help shape a delightful developer experience.

[Note] This is a 6-month contract position, and contract extension may be discussed based on performance during the employment period.

## KEY RESPONSIBILITIES

- Guide new users through onboarding, setup, and best practices
- Document technical learnings, common patterns, and solutions derived from real customer interactions
- Transform lessons learned into precise, actionable knowledge for both internal teams and external users
- Create and maintain documentation, tutorials, and sample projects
- Provide technical support via Instant messages, Slack, email, and meetings, helping users troubleshoot and resolve issues quickly
- Collaborate with engineering to debug production issues and prioritize fixes
- Lead customer-facing technical sessions, demos, and Q&As

## QUALIFICATIONS

- 2+ years in a developer-facing or technical support role (Customer Success, Solutions Engineering, etc.)
- Bachelor’s or Master's degree in Computer Science, Computer Engineering, Electrical Engineering, or equivalent
- Strong technical background in backend systems or AI tooling
- Excellent written and verbal communication skills (both Korean and English)
- Proficient in Python and familiar with LLM ecosystems (e.g., Hugging Face, LangChain)
- Experience working with APIs, CLI tools, and deployment workflows
- Ability to explain complex technical concepts clearly and concisely

## PREFERRED EXPERIENCE

- Strong technical writing skills with experience authoring user-facing or internal technical content
- Experience writing developer documentation or educational content
- Prior experience working with enterprise customers or managing technical escalations
- Contributions to developer communities or open source
- Familiarity with model serving platforms and inference workflows
- Hands-on experience building with agentic or autonomous AI frameworks

## BENEFITS

- Flexible working hours
- Daily lunch and dinner provided; unlimited snacks and beverages
- Supportive and highly collaborative work environment
- Health check-up support and top-tier equipment/hardware support
- A front-row seat to the generative AI infrastructure revolution
- Competitive compensation, startup equity, health insurance, and other benefits.

## ABOUT FRIENDLIAI

FriendliAI is building the world’s best AI inference platform that makes large language and multi-modal models fast, efficient, and deployable at scale. We power high-throughput, low-latency AI workloads for organizations worldwide and integrate directly with Hugging Face, giving developers instant access to over 600,000 open-source models.

We are a small, fast-moving team doing work that matters at one of the most exciting moments in the history of technology. With our world-class inference engine, we are building a platform that the AI industry can actually rely on.

## About FriendliAI

## Company Overview
- **One-liner**: FriendliAI is The Frontier AI Inference Cloud, providing a highly optimized platform for deploying, scaling, and monitoring large language and multimodal models with unmatched speed and cost efficiency.
- **Entity Type**: Private (Seed stage; $26.7M total funding)
- **Headquarters**: San Francisco, California, United States (with offices in Seoul, South Korea and Redwood City, CA)
- **Founded**: 2021
- **Founders**: Byung-Gon Chun (CEO) and Gyeong-In Yu (CTO) – the researchers who invented the continuous batching technique now standard in AI inference.

## Core Business
- **Primary industry**: AI Infrastructure / Cloud Inference Platform (Infrastructure as a Service)
- **Target customers**: B2B – enterprises and AI teams deploying generative AI and agent workloads at production scale; focuses on open-weight and custom models.
- **Mission**: Democratize access to production-grade AI so teams can focus on building great products.

## Products & Services
- **[FriendliAI Inference Cloud](https://friendli.ai/)**: A fully managed platform that instantly deploys 580,000+ Hugging Face models (language, audio, vision) with one click. Supports bring-your-own fine-tuned or proprietary models. Key features:
  - Custom GPU kernels, smart caching, continuous batching, speculative decoding, and parallel inference.
  - 2×+ faster inference than standard solutions, up to 3× faster than vLLM.
  - 50% to 90% cost savings relative to closed model APIs.
  - 99.99% uptime SLAs, geo-distributed infrastructure, enterprise-grade fault tolerance.
  - SOC 2 Type II and HIPAA compliant (March 2026).

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metric**: Total funding $26.7M (two seed rounds: $6.7M in 2021 and $20M led by Capstone Partners in September 2025)
- **Notable Investors/Partners**: Capstone Partners (lead investor in latest round), plus two other investors in the first seed round.
- **Growth Signals**:
  - Headcount grew 90% YoY to ~45 employees (as of mid-2026).
  - Active job postings: 19 positions (up 1800% YoY) – strong hiring momentum.
  - Appointed Brian Yoo (former Moloco COO) as Chief Business Officer in April 2026 to drive hypergrowth.
  - Achieved SOC 2 Type II and HIPAA compliance in March 2026, opening regulated markets.
  - LinkedIn followers grew 257% yearly (8,221 followers).

## Competitive Advantages
- **Inventor of continuous batching** – the technique is now industry standard, giving FriendliAI deep technical expertise.
- **Purpose-built inference engine** that constantly evolves for state-of-the-art models, delivering 2–3× speed improvements over alternatives like vLLM.
- **Massive model library** – 580,000+ Hugging Face models deployable instantly with zero manual optimization.
- **Enterprise-grade reliability** – 99.99% SLA, SOC 2 Type II, HIPAA, multi-cloud scaling.
- **Cost leadership** – 50–90% savings vs. closed model APIs, maximizing tokens per dollar.

## Strategic Focus
- **Hypergrowth** – scaling sales, engineering, and solutions architecture teams globally (US and Korea).
- **Compliance and enterprise readiness** – recent SOC 2/HIPAA certification to serve healthcare and regulated industries.
- **Multi-cloud and geo-distribution** – expanding infrastructure footprint for global low-latency inference.
- **Open-weight and custom model support** – enabling model ownership and flexibility for enterprises.

## Why Work Here
- **Culture**: “Boldest innovations come from great teams” – passionate, humble, curious builders. Mission-driven to democratize AI.
- **Work policy**: Hybrid (San Francisco and Seoul offices); some roles are in-office (Seoul) or hybrid (SF). Employees engage in a mix of remote and on-site work.
- **Engineering focus**: Heavy emphasis on AI inference engine, GPU kernels, Python developer tools, AI agents, backend, and platform security. High technical bar.
- **Perks**: Not explicitly listed, but fast-growing startup with significant impact in the AI infrastructure space; opportunity to work on cutting-edge inference optimization.
- **Locations**: San Francisco (HQ), Redwood City, CA, and Gangnam-gu, Seoul – global team with cross-cultural collaboration.

## Sources
1. [friendli.ai](https://friendli.ai/)
2. [friendli.ai/careers](https://friendli.ai/careers)
3. [jobs.ashbyhq.com/friendliai](https://jobs.ashbyhq.com/friendliai)
4. [builtin.com/company/friendliai](https://builtin.com/company/friendliai)
5. [linkedin.com/company/friendliai](https://www.linkedin.com/company/friendliai)

## Other roles at FriendliAI

- [Director of Product Management](https://feeny.ai/job/director-of-product-management-friendliai-san-francisco-vckbhh439mws) — San Francisco, CA
- [Software Engineer - Full Stack](https://feeny.ai/job/software-engineer-full-stack-friendliai-seoul-2kvnfm2hejx8) — Seoul, South Korea
- [Software Engineer – Cloud Infrastructure](https://feeny.ai/job/software-engineer-cloud-infrastructure-friendliai-san-francisco-z8fjtpn12kpn) — San Francisco, CA
- [Software Engineer - Cloud Infrastructure](https://feeny.ai/job/software-engineer-cloud-infrastructure-friendliai-seoul-rf473fpa9850) — Seoul, South Korea
- [Account Executive](https://feeny.ai/job/account-executive-friendliai-san-francisco-z6e1g3bcymfg) — San Francisco, CA
- [Software Engineer – Python Developer Tools](https://feeny.ai/job/software-engineer-python-developer-tools-friendliai-seoul-z74wd9kp8fex) — Seoul, South Korea
- [Software Engineer – GPU Kernel](https://feeny.ai/job/software-engineer-gpu-kernel-friendliai-seoul-yg1eq3ks7m5a) — Seoul, South Korea
- [Software Engineer – AI Inference Engine](https://feeny.ai/job/software-engineer-ai-inference-engine-friendliai-seoul-8pdpe18z4ejk) — Seoul, South Korea
- [Software Engineer - Senior Backend](https://feeny.ai/job/software-engineer-senior-backend-friendliai-san-francisco-h5x2ghcnfrg7) — San Francisco, CA
- [Software Engineer – AI Agents](https://feeny.ai/job/software-engineer-ai-agents-friendliai-san-francisco-7v0cdvt2ded6) — San Francisco, CA