Hire the Best Software Localization Freelancers
in Japan

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
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Hoshun M.

Tokyo, Japan

$40/hr
5.0
234 jobs

I’m Hoshun, a native professional Japanese translator and proofreader who turns large-scale Word (DOCX) / Excel (XLSX)/ PowerPoint (PPTX) / Google Document/Spreadsheet/Slide/XLIFF packages into flawless Japanese—often faster than average. I guarantee exceptional quality at unparalleled speed for tasks that other translators might deem impossible. When quick and meticulous translations are needed, you can rely on me as your steadfast ally. Field: General contents, Fintech, IT, etc. **<My skills>** - Translation, Localization (Word, Excel, PowerPoint, PDF, Google Docs, Google Spreadsheets, Google Slides, XLIFF, json, HTML, CSS, Texts, etc.) - Transcreation - Transcription of Japanese (Audio and video files, mp3, mp4) - Subtitling (SRT) - Proofreading, checking - Voice recording, narration, voice acting <The platform I'm familiar with> Crowdin Qualtrics Phrase **<About subtitling>** I can make SRT files or burn subtitles directly onto a video. - YouTube: Bodd x Disney (Japanese Subtitles) # Examples of my past translation projects **<Apps>** - Smart Meditation: A wellness app offering guided meditation sessions and mindfulness tools - POP guide: A digital guide app providing interactive information for events, museums, or exhibitions - 3D Modeling App: A creative tool for designing and visualizing 3D models - QuitSure: A health app designed to help users quit smoking through behavioral guidance - Toko: English leaning app - Donna: AI song and music maker - IRMO: An AI-powered art and avatar creation app for generating images and visual content - TradingKey: A finance app offering trading tools and resources for investors - Bodd: Automatic fitting app - 5 Minute Pilates: Daily Pilates guide app - Liven: Self-discovery companion app - Ruut: Personalized running & mobility training app - Pushscroll: Fitness motivation app replacing doomscrolling with workouts **<Websites>** - QuitSure: Official website for the smoking cessation app, with resources and user support - Smart Meditation: Website for the meditation app, featuring program details and subscription options - Makkah Digital Coin: A cryptocurrency platform providing digital coin services and blockchain solutions - KOMOJU card: A payment gateway site offering online transaction and e-commerce solutions - INNO SUPPS: A nutrition and supplement brand website showcasing health products - Zact: A fintech website offering digital payment and financial management services - TradingKey: Online platform for trading education, tools, and financial resources - JMarkets: A financial services website focused on market analysis and trading solutions - NEBULA: A personality‑analysis platform providing AI‑driven insights - MyTraitsProfile: An online assessment site offering MBTI‑based personality tests **< Books >** - "Wonderful Day" # Publisher Kidkidos books - "The Traveling Caterpillar" # Publisher: Kidkidos books - "I Am Thankful" By Shelley Admont # Publisher: Kidkidos books - "Under the Stars" # Publisher: Kidkidos books - "Knowing Me, Knowing You - TAKE A WALK WITH ME" by Elizabeth Murphy, Ed.D. - "If You’re not Monitoring, You’re Not Protected" By Dr. James Dean Senger **< Games >** - Passion Eye - The Last Frame **< YouTube >** - Quantum Tech HD - Oscar Hunt: Scaling US Retail Operations with Bodd **< Opera >** - Curlew River by Benjamin Britten **<Voice over, narration>** - P3 Dokument (Swedish Broadcasting Corporation) **<Medical>** - Clinical tests - Charts - Surgery explanations - Cancer study - Discussion Guide for Physicians **<Transportation>** - Fly Lili airport announcement (Air port announcement) - TVM UI Translation - Haneda Airport Parking (Terms and Conditions)

  • Software Localization
  • Localization
  • Subtitles
  • Japanese
  • Transcription Timestamping
  • General Transcription
  • Microsoft Word
  • Translation
  • Japanese to English Translation
  • English to Japanese Translation
  • Website Localization
  • Subtitling
  • Translation & Localization Software
  • Mobile App Localization
  • Marketing Localization
Yuki T.

Kobe, Japan

$25/hr
5.0
13 jobs

Native Japanese speaker fluent in English and Chinese (Simplified & Traditional), with over 30 years of international experience, including 26 years in China and 6 years in the U.S. After 18 years in HR, payroll, and tax compliance at Sony, I am now working as a freelance translator, interpreter, evaluator, and consultant. In addition to translation and linguistic QA, I specialize in video content analysis, video QA, and AI/ML dataset annotation. I have hands-on experience reviewing short-form video content, evaluating cinematography elements (transitions, pacing, camera movement, lighting), and performing detailed frame-level quality checks. I also work extensively with English guidelines and technical instructions for AI training projects. I also work on sourcing and onboarding Japanese contributors for AI audio projects. What I Offer 🌐 Trilingual Translation & Linguistic QA • Japanese ↔ Simplified/Traditional Chinese / English • Translation, post-editing, and proofreading • Machine translation evaluation & ranking tasks • Video QA, content review, and subtitle editing (SRT/SBV) • Subtitling and script translation (TV, video, e-learning, games, anime, etc.) • Marketing, medical, technical, legal, and regulatory content 🎥 Video Content Analysis & AI Data Evaluation • Video QA & annotation (visual quality, transitions, pacing, scene structure) • Cinematography evaluation (camera movement, lighting, framing) • Frame-accurate quality checks for short-form videos • Audio/text data annotation for AI/ML training • Guideline-heavy annotation tasks in English 🧾 China Business & HR Support • Payroll, taxation, labor compliance, visa consulting • NDAs, supplier agreements, employment contracts 🎤 Professional Interpretation • Trade shows, business meetings (JP–EN–CN) • Remote and on-site support 🔍 Market & Supplier Research • China product & supplier research • Market insights and cultural consulting for cross-border business With a unique blend of multilingual communication skills, video QA experience, and evaluation expertise, I provide accurate, reliable, and culturally fluent support for global companies. Whether it’s video content analysis, AI data evaluation, translation/localization, or China HR consulting, I can help bridge the gap between Japan, China, and the world.

  • HR & Business Services
  • Recruiting
  • Mandarin Chinese
  • Japanese
  • English
  • Chinese
Toru O.

Setagaya, Japan

$22/hr
5.0
99 jobs

I have 9 years of translation experience and specialize in JPN to ENG and ENG to JPN in a wide range of industries including but not limited to IT, automotive, life science, tourism, medical, legal, and finance. If you are looking for a translator and proofreader with native Japanese skills, I will be happy to assist you. I also have experience using CAT, such as Phrase, MemoQ, Crowdin, and Wordfast. Please inquire for rates and turnaround time. I offer high-quality translations that emphasize natural expressions and jargon while conveying the original content. I look forward to working with you.

  • Translation
  • Email Communication
  • Japanese
  • English
  • Contract Translation
  • Technical Translation
  • History
  • Blog Writing
  • Video Editing
  • Japanese to English Translation
  • Mobile App Localization
  • General Transcription
  • Technical Manual
  • Legal Agreement
  • Website Localization
Taki M.

Yokohama, Japan

$30/hr
5.0
75 jobs

I help SaaS, fintech, AI, and enterprise teams launch in Japan with native Japanese localization, UX/linguistic QA, and SEO-ready content—grounded in 15+ years of IT delivery. Before Upwork, I spent 14+ years at Nomura Research Institute (NRI), one of Japan’s leading IT consulting firms, leading requirements, architecture, delivery, and cross-border coordination for financial platforms, internet banking, and enterprise analytics across Tokyo, New York, and Shanghai. I bring a systems mindset to localization. I don’t just translate words—I check terminology, product logic, user intent, tone, cultural fit, and implementation risk. Core services • Japanese localization & transcreation: EN/ZH → JA, JA ↔ EN/ZH, business, IT, finance, SaaS, product, and marketing content • UX & linguistic QA: UI strings, onboarding flows, help centers, surveys, discussion guides, app/web copy, terminology, and tone consistency • AI training & evaluation: Japanese LLM output review, prompt testing, model comparison, rubric design, and QA comments • SEO localization & WordPress: keyword mapping, localized page architecture, on-page SEO, internal linking, and clean WordPress publishing • Finance/IT documentation: product docs, specifications, white papers, fintech content, and enterprise communications Why clients choose me • Native Japanese output with fluent English and Chinese communication • 14+ years in enterprise IT and finance delivery • 1,000,000+ words translated on Gengo; Top Scorer and Wordsmith badges • Upwork Top Rated Plus, 100% Job Success, 2,500+ hours, and 69+ total jobs • Clear communication, structured QA, and practical recommendations—not just text delivery Best fit • SaaS, fintech, AI, cybersecurity, e-commerce, and enterprise teams entering or improving their Japanese market presence • Product teams that need Japanese localization plus UX/product judgment • Long-term localization, QA, SEO, and AI evaluation work where consistency matters Workflow 1) Align on scope, audience, terminology, and success criteria 2) Start with a small paid pilot or audit 3) Build a glossary/style baseline 4) Deliver with QA notes, comments, and actionable recommendations Send me your product page, UI strings, content brief, SEO page, or evaluation rubric. I’ll suggest the fastest low-risk pilot to prove fit.

  • Artificial Intelligence
  • AI Development
  • Website
  • WordPress
  • Japanese
  • English
  • Chinese
  • Translation
  • Proofreading
  • Video Editing
  • YouTube
  • Script
  • Blog
  • Article
  • SEO Writing
Yuki S.

Yokohama, Japan

$30/hr
4.9
27 jobs

"Your readers won’t even realize it was translated — they’ll simply feel like it was written just for them." You want to communicate clearly and confidently with your Japanese or English audience — without the risk of awkward phrasing or misunderstood intent. But many translations miss the mark. Whether it’s for technical documentation, marketing content, or live interpretation, even small errors can confuse your audience or dilute your brand’s message. That’s where I come in. I’m a native Japanese translator and interpreter fluent in English (TOEIC:Business English test 960/990), with over 300 completed projects. I’ve worked with brands like BlueStacks, Shokz, and Board Games Maker.com, helping them build stronger connections through culturally precise, audience-aware communication. I’ve also served as an interpreter for The Patient Story (200K+ subscribers) , supporting interviews with cancer survivors — a role that required deep empathy, sensitivity, and clarity. With a background in Mechanical Engineering and hands-on experience in LCD and mechanical design, I bring added expertise to technical translations — making even complex content feel clear and natural to your readers. My Services: • Japanese ↔ English Translation • Onsite & Remote Interpretation • Technical Documentation Translation • Proofreading & Editing Why Clients Work With Me: • Precise, culturally adapted translations • Experience across gaming, tech, and manufacturing • Strong attention to detail and on-time delivery • Proven ability to match tone, style, and target audience Let’s work together to ensure your message doesn’t just translate — it resonates. Feel free to reach out and tell me about your project!

  • Adobe Illustrator
  • Japanese
  • English
  • Word Processing
  • WordPress
  • SEO Content
  • Language Interpretation
  • Translation
  • Live Interpretation
  • Simultaneous Interpreting
  • Translation & Localization Software
  • Business Translation
  • Document Translation
  • Japanese to English Translation
  • English to Japanese Translation
Shavkatbek T.

Machida, Japan

$40/hr
4.8
174 jobs

Top Rated Plus Freelancer | $200K+ Earned | 100% Job Success Looking to expand your business into Japan? I help international companies successfully enter the Japanese market through market research, business development, localization, strategic partnerships, and cross-cultural consulting. With over 10 years of professional experience in Japan, I have helped startups, SMEs, and Fortune 500 companies bridge the gap between global markets and Japan. Having lived and worked in Japan for more than a decade, I understand both Japanese business culture and international business expectations. My clients hire me not just because I speak Japanese—they hire me because I understand how business is done in Japan. Services 🇯🇵 Japan Market Entry ✔ Market Research ✔ Competitor Analysis ✔ Business Strategy ✔ Go-to-Market Planning ✔ Product Validation 🤝 Business Development ✔ Partner Search ✔ Distributor Search ✔ Sales Support ✔ Lead Generation ✔ Cold Outreach ✔ Client Meetings 📈 Market Research ✔ Consumer Research ✔ Industry Reports ✔ Surveys ✔ Interview Moderation ✔ Data Collection 🌏 Localization ✔ English ⇄ Japanese ✔ Website Localization ✔ Software Localization ✔ Marketing Localization ✔ Technical Translation ✔ Business Translation 🎮 Entertainment & Licensing ✔ Licensing Support ✔ Japanese IP Research ✔ Anime Industry ✔ Gaming Industry ✔ OEM Manufacturing ✔ Product Development 📊 Project Management ✔ Cross-border Projects ✔ Vendor Management ✔ Timeline Management ✔ Stakeholder Communication ✔ Japanese Negotiation Industries I have worked with companies in: • AI • SaaS • Cybersecurity • Automotive • Manufacturing • Gaming • Anime • Entertainment • Consumer Products • Technology • Retail Languages 🇯🇵 Japanese 🇺🇸 English 🇺🇿 Uzbek 🇷🇺 Russian Why Clients Hire Me ✔ Top Rated Plus ✔ 100% Job Success ✔ $200,000+ earned ✔ 120+ successful projects ✔ 3,900+ hours completed ✔ Fast communication ✔ Business-focused mindset ✔ Professional documentation ✔ Reliable project management ✔ Strong understanding of Japanese business culture Let's Work Together Whether you need: Market research Business development Japanese localization Product launch support Supplier sourcing Business consulting Translation Licensing support I'm here to help. Let's discuss your project!

  • Japanese
  • English to Japanese Translation
  • Influencer Marketing
  • Social Media Marketing
  • Content Creation
  • Virtual Assistance
  • Marketing Strategy
  • Copywriting
  • SEO Content
  • Business Development
  • B2B Marketing
  • Sales
  • Project Management
  • Licensing
  • Go-to-Market Strategy
  • Lead Generation
  • Legal Negotiation
  • Product Sourcing
  • Market Research
  • International Business

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