Contributors
The people who build JLPT Mastery — writers, native-speaker reviewers, teachers, engineers, and moderators. Every article is written by a named human and fact-checked before it ships, and the product itself is shaped by people who care about getting the details right.
Editorial Team
The in-house editorial team behind JLPT Mastery. We write and fact-check study guides, test-prep breakdowns, and career advice for learners working toward N5 through N1.
Founding Member & Lead Engineer
Founding member of JLPT Mastery who designed the platform's architecture and made the core product and engineering decisions behind it. He built the adaptive practice engine, the streak-based mastery state machine, and the Confusion Intelligence system that targets the exact word pairs each learner mixes up — spanning vocabulary, grammar, and full mock exams across all five JLPT levels (N5–N1). He also shapes the editorial direction and fact-checks the guides that go out under the JLPT Mastery name.
Native Speaker & Reviewer
A native Japanese speaker who reviews vocabulary and grammar entries for natural usage and nuance. Haruka checks example sentences and confusion-pair explanations to make sure they read the way real Japanese is spoken.
JLPT Instructor
A JLPT instructor who has guided learners from N5 through N1. Marco reviews the mock exam question papers and helps shape the study guidance so it matches how the test is actually structured.
Learner & Content Reviewer
A JLPT learner working toward N3 who reviews study material from a student's perspective. Elena flags explanations that are hard to follow and suggests clearer wording for fellow learners.
Engineer & Code Reviewer
A software engineer who reviews pull requests and helps keep the JLPT Mastery codebase clean and reliable. Harshad digs into bugs, catches problems early, and suggests clearer, more maintainable solutions — pairing hands-on coding with careful review.
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Help build JLPT Mastery — writing, review, teaching, engineering, or moderation.
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We welcome help of every kind — writing articles, reviewing Japanese for accuracy, teaching, building the product, or moderating the community. Tell us how you'd like to contribute and, if it's a fit, you'll get a profile right here.
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