Codex Applied AI Engineer - Tokyo (Hybrid, Relocation)

OpenAI; United States; Hybrid; USD 76,000 - 114,000; Full time

Benefits offered by this job

Relocation assistance

Hybrid work model (3 days in-office)

Job summary

OpenAI in Tokyo, Japan, seeks an Applied AI Engineer focused on Codex to partner with leading engineering teams to design, build, and deploy AI-powered coding workflows.

You will work hands-on in code, evaluate models, and help customers scale deployments while ensuring safety, reliability, and measurable productivity improvements. The role offers relocation assistance and a hybrid schedule with three days in-office.

Qualifications

• Experience designing and delivering AI/software systems in enterprise environments.
• Strong Python development skills and familiarity with JS/TS.
• Able to translate customer needs into practical development workflows.
• Excellent collaboration with product, security, and engineering teams.

Responsibilities

• Partner with engineering leaders to identify high-value Codex opportunities.
• Design and deploy AI-powered software development workflows.
• Build prototypes, evaluation harnesses, and production accelerators.
• Help customers move experiments to reliable production workflows.
• Evaluate AI coding systems with representative tasks and signals.
• Lead deep dives and enablement sessions for adoption.

Skills

Python

JavaScript/TypeScript

AI systems

Tools

Codex

Evaluation harnesses

Job description

OpenAI in Tokyo, Japan, seeks an Applied AI Engineer focused on Codex to partner with leading engineering teams to design, build, and deploy AI-powered coding workflows.

You will work hands-on in code, evaluate models, and help customers scale deployments while ensuring safety, reliability, and measurable productivity improvements. The role offers relocation assistance and a hybrid schedule with three days in-office.