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aimlroles

Full-time - Senior Research Engineer for Natural Language Processing

Sonyjapan Open · verified Nov 1, 2026
Tokyo Full-time Senior AI Research

At a glance

Senior AI Research role at Sonyjapan. Tokyo · full-time.

Pay not stated AI Research salary

RoleAI Research
SenioritySenior
LocationTokyo
EmploymentFull-time
PostedOct 28, 2026 · 4d ago
Role brief

aimlroles summary, based on the employer's posting.

What you'll do

  • Build machine-translation systems end to end for localizing anime, games and films
  • Develop translation models, create training data and devise ways to measure translation quality
  • Turn research into deployed technology, including model compression and production-system integration when needed
  • Submit research with strong academic potential to leading conferences when appropriate

What you bring

  • A master's degree in NLP, AI, machine learning or a related area, or equivalent practical experience
  • At least three years using Python, C/C++ and Linux or Unix
  • At least two years in machine learning and NLP with frameworks such as PyTorch or TensorFlow
  • Research contributions shown through conference papers, open-source work or other scientific activity
  • Experience developing large language models and applying supervised fine-tuning and reinforcement learning to downstream tasks

Who this fits

This senior research role suits you if you combine NLP and machine-learning expertise with hands-on model development and research contributions. The position is based in Tokyo, Japan.

From the employer

Technology Field
Natural Language Processing
Machine Learning

Position Summary
Our department conducts research and development in speech and language technologies that contribute to content creation and distribution. In particular, our team focuses on developing machine translation technologies for content such as anime, games, and films. Our goal is to lower the barriers to multilingual content distribution and deliver content to more people, more quickly.

We are advancing the development of machine translation technologies with characteristics not found in conventional industrial translation. These include translations that preserve the worldbuilding and creative intent of the original content, as well as translations that take into account the cultural nuances of the target language. We are seeking talented individuals who can help accelerate this development.

Responsibilities
You will be responsible for the end-to-end development of machine translation technologies that support the localization of entertainment content, including anime, games, and films. Your responsibilities will include model development, the design of evaluation metrics, and data development.

For research outcomes with strong academic potential, we may consider submitting papers to top-tier conferences. Depending on the stage of collaboration with business groups, you may also be responsible for a wide range of tasks required for technology deployment, including model optimization techniques such as model compression, as well as integration into production systems.

Required qualifications
■ Master’s degree in natural language processing, artificial intelligence, machine learning, or a closely related field, or equivalent practical experience.

■ 3 years of experience with Python, C/C++, and Linux/Unix.

■ 2 years of experience in machine learning and NLP, using common frameworks such as PyTorch or TensorFlow.

■ Proven research ability, demonstrated by a track record of conference publications, open-source software contributions, or other scientific activities.

■ Knowledge of and experience in LLM development, as well as applying LLMs to downstream tasks using supervised fine-tuning and reinforcement learning.

Preferred qualifications
■ A Ph.D. student specializing in natural language processing, artificial intelligence, or machine learning is preferred.

■ At least 3 years of experience in computer science, AI/ML, or a related field is required.

Product, Service
Anime/Game/Film (content localization, content creation support).

Development Environment
■ OS: Linux and Windows

■ Programming Languages: Python, C/C++, etc.

■ PC, Server, Cloud Computing

Application Requirements
Essay: Not Required

Coding Test: Not Required

Required Skills:

Optional Skills:

Opportunity

AI Research work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

AI Research

Find me work

By the team behind aimlroles.

Find me work
Opportunity

AI Research work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Find me work

By the team behind aimlroles.