Middle AI Research Engineer (Focus LLM)

ABOUT WIGIN AI:
Wigin is a product-led AI company powered by a team of leading engineers across the artificial intelligence and technology sectors. The company specializes in building production-grade solutions that transform frontier AI research into reliable, scalable systems engineered to deliver real, measurable value for businesses. Rather than just creating theoretical models, Wigin focuses on engineering practical products that win at scale and optimize how businesses actually run.
The company operates across three core domains:
(1) AI Services
(2) AI Investment Intelligence
(3) AI Products
ABOUT THE ROLE:
We are looking for a Full-time AI Engineer to join our team and work on projects involving Large Language Models (LLMs) and Generative AI.
You will work closely with a technical team to design, fine-tune, evaluate, optimize, and deploy advanced language models for real-world applications. This is a great opportunity for candidates who want to work deeply with frontier LLMs, Retrieval-Augmented Generation (RAG) architecture, AI Agent systems, and large-scale GPU infrastructure
WHAT YOU'LL DO:
Research, develop, and apply state-of-the-art Large Language Models (LLMs) and Generative Text/Multimodal AI models.
Build, optimize, and evaluate advanced LLM applications, including RAG (Retrieval-Augmented Generation), AI Agents, and workflow automation systems.
Design, pre-train, fine-tune (SFT, LoRA/QLoRA), and align (RLHF/DPO) open-source LLMs for domain-specific tasks.
Optimize model latency, throughput, and inference cost using modern frameworks and techniques.
Read research papers, experiment with new methods (Prompt Engineering, Context Extension, Function Calling), and apply them to practical AI products.
Collaborate with backend and product engineering teams to integrate LLM pipelines into scalable production systems.
Monitor model safety, hallucinations, performance, and continuously improve model quality.