Middle / Strong Middle NLP / LLM Engineer

#vacancy #jobs #вакансия #nlp #llm #machinelearning #ai #incheon #southkorea #fulltime
Position: Middle / Strong Middle NLP / LLM Engineer
Location: Incheon, South Korea | On-site / Hybrid
Company: HaaS Platform
Employment: Full-time
Salary: Competitive, discussed individually


MIDDLE / STRONG MIDDLE NLP / LLM ENGINEER
Incheon, South Korea | Full-time | On-site / Hybrid

About the Role:
We are looking for a Middle / Strong Middle NLP / LLM Engineer to develop production AI solutions across RAG, LLM applications, AI assistants, document processing and multilingual NLP, working closely with senior engineers.
Key Responsibilities:
-Develop and improve RAG applications: chunking, embeddings, retrieval and reranking.
-Build LLM workflows and agents with LangChain, -LangGraph, LlamaIndex, CrewAI or similar.
-Develop query rewriting, intent classification, routing and structured extraction.
-Integrate LLM APIs/models into production systems.
-Work with OpenAI, Gemini, Hugging Face and PyTorch.
-Contribute to SFT, LoRA, QLoRA, PEFT and LLM evaluation.
-Work with OCR, PDF/DOCX, STT and conversational memory.
-Build APIs with Python / FastAPI and work with Docker, Git, testing and CI/CD.
-Monitor and improve model quality, latency and cost.
-Take ownership of individual features/components with senior-engineer mentorship.
Requirements:
-2–4 years in NLP / ML / Information Retrieval / Applied AI.
-Strong Python skills.
-Hands-on experience with LLM / RAG / AI-agent applications.
-Understanding of transformers, embeddings, prompting, retrieval, chunking and reranking.
-Experience with LangChain / LangGraph / LlamaIndex / CrewAI.
-Experience with Qdrant / Pinecone / Milvus / Weaviate / Elasticsearch.
-Experience with OpenAI / Gemini / Hugging Face and familiarity with PyTorch.
-Understanding of LLM evaluation and hallucination mitigation.
-FastAPI, REST, Docker, Git.
-Multilingual NLP is a plus.
-Professional English.

Nice to Have: SFT / LoRA / QLoRA / PEFT; BM25 / RRF; RAGAS / DeepEval / LangSmith / Langfuse; OCR/STT; Graph RAG; vLLM/TGI/Triton; GPU optimization.
-Korean is a plus.
Visa and relocation support may be available.

📩 Interested? Contact: контакт скрыт