Technical Lead, Machine Learning

Seoul, South Korea • Full-time

About the role

Bjak is a foreign-invested AI company with English-language operations typical for international ML teams. Visa sponsorship is likely available for qualified technical talent.

Responsibilities

• Own end-to-end ML system execution: data pipelines, training workflows, evaluation, inference, and deployment.
• Fine-tune and adapt models using LoRA, QLoRA, SFT, DPO, and distillation techniques.
• Architect and operate scalable inference systems balancing latency, cost, and reliability.

Requirements

• Built or shipped real ML systems used by people, not just demos or prototypes.
• Comfortable working with large models and understanding their failure modes.
• Write strong, production-grade code with attention to system correctness.

Visa & Language

• Visa tier (likely): F-2 / F-4 / F-5 / F-6 holders welcome.
• Korean language: Not required.
• English friendliness: High (job description in English, foreigner-friendly signals).