LILT is seeking an experienced native-speaking software engineer to join our efforts in evaluating AI capabilities. In this role, you will design, build, and validate benchmarks for large language models on multilingual software challenges, with a focus on creating high-signal tasks in your native language. AI is changing how the world communicates—LILT's mission is to make the world's information available to everyone, no matter the language they speak.

What You'll Do

Task Engineering: Evaluate and design tests for coding agents.
Asset Creation: Build realistic task environments using datasets and files in your native language.
Prompting & Translation: Identify failure points where AI does not work, specifically in your native language.
Implementation & Verification: Support the development of robust solutions and write highly reliable, deterministic verifier scripts.
Calibration & Execution: Analyze execution logs and calibrate task difficulty using standard Terminal-Bench run configurations against various model tiers.
Quality Assurance: Participate in a rigorous, 4-layer human quality control process alongside automated LLM-based checks.

What We're Looking For

5+ years of industry experience in software engineering.
A proven track record at leading technology companies and/or graduation from top-tier engineering universities.
Native or near-native fluency in Japanese, with a deep understanding of its grammar, register, and phrasing rules.
High proficiency in English.
Strong proficiency in Python, standard shell scripting, and data processing.
Extensive experience with Terminal/CLI-based development workflows and a working familiarity with coding agents.
Deep technical understanding of multilingual text processing pitfalls, including encoding/decoding robustness, Unicode normalization, locale-dependent conventions, text I/O, toolchain interoperability, and safe string operations.

Technical Stack

Python
Shell scripting

Benefits & Compensation

Earn money and get paid quickly and fairly.
Have fun and advance human knowledge.
Work on diverse projects from anywhere, any time you want.
Build your professional network in a supportive community.

Work Mode

This is a global, distributed role.

LILT is an equal opportunity employer. We extend equal opportunity to all individuals without regard to an individual’s race, religion, color, national origin, ancestry, sex, sexual orientation, gender identity, age, physical or mental disability, medical condition, genetic characteristics, veteran or marital status, pregnancy, or any other classification protected by applicable local, state or federal laws.