Staff Engineer, Multilingual Data & Language Pipelines

Visa Hunt; San Francisco (CA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Top-tier compensation

Stock options

Health & wellness

Meals provided

Life & family benefits

Vacation days

Job summary

Visa Hunt is seeking a data-driven research engineer to design and operate large-scale multilingual data pipelines for language models. You will define quality bars across multilingual corpora, run experiments, and lead small projects while collaborating with broader teams.

The role focuses on improving multilingual data efficiency and requires hands-on experience with distributed processing, evaluation, and cross-language work. Join a fast-moving team advancing multilingual AI at scale.

Qualifications

• Strong software engineering fundamentals and comfort processing web-scale datasets in distributed environments.
• Experience building large-scale data pipelines for language models, machine translation, speech, or search — ideally covering more than one language.
• Fluency or working proficiency in at least one language other than English, and genuine curiosity about how languages differ.
• A rigorous, measurement-first mindset: you prove a data change helped rather than assuming it did.
• Navigate trade-offs between research objectives and practical engineering realities.
• Comfortable with ambiguity and high ownership in a small, fast-moving team. Passionate about advancing the frontier of intelligence.

Responsibilities

• Design and operate large-scale multilingual data pipelines across languages, including sourcing, cleaning, deduplication, language identification, and script normalization.
• Define and enforce quality bars for multilingual corpora, including translation quality, cultural fidelity, toxicity, and contamination checks.
• Design and run scientific experiments to advance understanding of scaling language models to improve multilingual data efficiency.
• Lead small research projects independently while collaborating on larger initiatives.
• Build evaluation sets and diagnostics to expose where model behavior degrades by language, register, or domain.
• Work with pre-training, mid-training, and post-training teams to land measurable improvements in multilingual capability.

Skills

Large-scale data pipelines

Multilingual NLP

Distributed systems

Quality measurement

Research collaboration

Tools

Python

Spark

SQL

ML frameworks

Job description

Visa Hunt is seeking a data-driven research engineer to design and operate large-scale multilingual data pipelines for language models. You will define quality bars across multilingual corpora, run experiments, and lead small projects while collaborating with broader teams.

The role focuses on improving multilingual data efficiency and requires hands-on experience with distributed processing, evaluation, and cross-language work. Join a fast-moving team advancing multilingual AI at scale.