Short version: Rakuten and Mercari hire foreigners at scale into English-first engineering teams, Google, Amazon, and Microsoft pay the highest base salaries in the market, and a fast-growing tier of mid-size scale-ups — SmartHR, Money Forward, Ubie, Sansan — sponsors visas reliably while moving faster than either group in their hiring process. Here's what each tier actually looks like from the inside, and what skills get you in the door.

Why Japan Is Hiring More Foreign Tech Talent

Japan's working-age population has shrunk every year since 1995, and the Ministry of Internal Affairs projects a shortfall of roughly 450,000 IT professionals by 2030. Domestic universities aren't producing enough engineers to close that gap, so companies that used to hire almost exclusively from new-graduate pipelines are now building English-language recruiting tracks from scratch.

That shift shows up differently by company type — a fact that most "top companies" lists flatten into one undifferentiated category. The sections below break out what's actually different about each tier: language requirement, hiring speed, pay band, and how reliably they sponsor.

Major Japanese Tech Companies Hiring Internationally

Rakuten Group

Rakuten made English its official internal working language in 2010 and has kept building on it since — meetings, internal documents, and Slack channels run in English across most engineering teams. It's one of the largest single employers of foreign engineers in Japan, hiring into backend, mobile, data science, and DevOps roles. Visa sponsorship is routine; Rakuten's HR team processes Certificate of Eligibility applications constantly.

Mercari

Mercari's engineering org is English-first by design, not by accommodation — internal documentation, code review, and most stand-ups default to English. It's a flatter, faster-moving culture than Rakuten's, closer to a Silicon Valley startup than a traditional Japanese firm. Mercari hires heavily into mobile development, platform engineering, machine learning, and security, and pays competitively against foreign-capital firms.

LY Corporation

Formed from the 2023 merger of LINE and Yahoo Japan's parent companies, LY Corporation runs one of the largest engineering headcounts in Japan. Language requirements vary sharply by team: LINE's messaging and platform teams retain more English-friendly practices from LINE's Korean roots, while legacy Yahoo Japan teams typically require business-level Japanese. Confirm the specific team's language policy before applying — it is not uniform across the company.

Sony Group

Sony hires foreign talent into AI research, robotics, semiconductor development, and game engineering — particularly at Sony AI and PlayStation's global studios, where English is the working language. Outside those specific divisions, most roles expect JLPT N2-level Japanese for day-to-day collaboration with manufacturing and business teams. Sony's visa sponsorship process is mature and well-documented internally, since it has sponsored international researchers for decades.

Global Tech Firms in Japan

Google Japan

Google's Tokyo office hires into cloud engineering, sales engineering, AI/ML research, and platform operations. Compensation tracks close to global Google bands adjusted for Japan cost of living, making it one of the highest-paying employers on this list. English is the default working language; Japanese helps with client-facing roles but isn't required for most engineering positions.

Amazon Japan / AWS

Amazon's Japan operation spans both AWS (cloud infrastructure, largely English-speaking, global mobility common) and Amazon retail/logistics (more Japanese-dependent, especially in operations roles). Software engineering, data analytics, and supply chain technology are the most active foreign-hire categories. Amazon runs one of the most structured, high-volume interview processes of any employer in this guide — expect multiple technical rounds regardless of seniority.

Microsoft Japan

Microsoft hires into cloud services (Azure), enterprise solutions, and AI research, with a strong contingent of English-friendly roles, particularly in technical pre-sales and cloud architecture. Microsoft's Japan compensation bands sit just below Google's but above most domestic Japanese firms, and its sponsorship process is well-established for both Engineer and HSP visa categories.

Startups and Scale-Ups: Where Foreign Hiring Is Growing Fastest

This is the segment most "top companies" lists underweight, and it's where AI-Recruit sees the fastest-growing share of foreign placements. Companies like SmartHR, Money Forward, Cybozu, Sansan, Paidy, Andpad, and Ubie — typically 50 to 800 employees, well-funded, and product-led — sponsor visas regularly and tend to run shorter interview loops than either large Japanese corporates or FAANG-tier firms.

What makes this tier attractive:

  • English-friendly engineering culture — most run engineering documentation and code review in English even when the broader company is bilingual
  • Faster decisions — offers often land within 2-3 weeks of a final interview, versus 4-8 weeks at larger firms
  • Broader role scope — smaller teams mean more ownership earlier in your tenure

The tradeoff: HR infrastructure varies more by company. A 200-person scale-up with prior international hires sponsors as reliably as a large corporate. A 20-person early-stage startup with no prior foreign hire may stall mid-process simply from inexperience with the Certificate of Eligibility paperwork — not unwillingness.

Most In-Demand Tech Skills in Japan

Across AI-Recruit's database of 2,500+ companies, the skills generating the most foreign-candidate interest are:

  • Backend engineering — Go, Python, Java, Kotlin
  • Cloud and DevOps — AWS, GCP, Azure, Kubernetes
  • AI and machine learning — the single fastest-growing category by job posting volume in 2026
  • Cybersecurity — particularly in finance and e-commerce
  • Data engineering — pipeline and infrastructure roles, not just analytics
  • Mobile development — iOS and Android, especially at Mercari, Rakuten, and Paidy

Japanese language ability is not a hard requirement for most of these roles at the companies listed above, but it materially widens your options — it's the difference between qualifying for English-only teams and qualifying for an entire company.

Visa Sponsorship: What to Expect

Most tech professionals enter Japan under the Engineer / Specialist in Humanities / International Services visa, which requires a four-year degree (or 3+ years of relevant experience for IT-specific roles) and a signed job offer from a Japan-registered employer. If you score 70+ points on Japan's Highly Skilled Professional system — based on age, salary, education, and Japanese ability — you qualify for the HSP visa instead, which fast-tracks permanent residency to 3 years (or 1 year at 80+ points) and grants your spouse work rights.

Large corporates and foreign-capital firms have mature, well-documented sponsorship processes. Funded scale-ups with prior international hires are nearly as reliable. Early-stage startups and small traditional SMEs are the highest-risk category — not because they're unwilling, but because first-time sponsors sometimes underestimate the paperwork and timeline.

Important distinction: "sponsors visas" does not always mean "open to overseas relocation." A company that routinely sponsors visas for foreigners already in Japan (who need a new COE to change employers) may not have the infrastructure or willingness to relocate candidates from abroad. Relocation involves additional costs (flights, temporary housing, relocation allowance) and risk (higher drop-out rate before the start date). Always confirm which type of sponsorship a company offers — don't assume "sponsors visas" on a job board means they'll fly you out.

A note for 2026 applicants: a new language requirement (CEFR B2 / JLPT N2) takes effect in April 2026 for new applications to Category 3 and 4 employers under certain visa subcategories. It does not apply retroactively and does not affect most Category 1-2 employers — confirm your target company's category before assuming it applies to you.

How to Improve Your Chances

  • Tailor your resume to what Japanese hiring teams scan for — a clear, front-loaded skills list reads faster than a narrative-style Western resume
  • Highlight international team experience — it signals you can work across the language and culture gap without hand-holding
  • Show commitment to staying in Japan long-term — visa-related attrition risk is something hiring managers actively screen for
  • Mention any Japanese ability, even basic — it changes how a recruiter reads the rest of your application
  • Apply where sponsorship is confirmed, not just plausible — wasted cycles on companies that aren't actively sponsoring are the single biggest time-sink in a Japan job search

Corporate vs. Startup: Which Fits You

Large corporates and foreign-capital firms (Sony, Google, Amazon, Microsoft) offer stability, structured benefits, and the most predictable visa process. Startups and scale-ups (Mercari, SmartHR, Ubie, Sansan) offer faster hiring, broader role ownership, and quicker promotion timelines, with more variance in company-to-company stability. Your visa timeline matters here: if you need sponsorship to move quickly and can't absorb risk, a mid-size scale-up with an established track record is often the better bet than either extreme.

AI-Recruit's database tags every one of its 2,500+ companies by current sponsorship status and English-friendliness, so you're not guessing which tier a company actually falls into before you apply.

Key Takeaways

  • Japan is actively hiring foreign tech talent to close a structural engineering shortfall
  • Rakuten and Mercari are the most reliable large-scale, English-first employers among Japanese firms
  • Google, Amazon, and Microsoft pay the highest base salaries but run the most competitive interview bars
  • Mid-size scale-ups (SmartHR, Money Forward, Ubie, Sansan) are the fastest-growing and fastest-moving hiring segment
  • Backend, cloud/DevOps, and AI/ML skills see the strongest demand and pay premium
  • Confirm sponsorship status and language requirements before investing weeks in an application

See which companies are hiring on AI-Recruit →

Frequently Asked Questions

What are the best tech companies in Japan for foreigners?

Rakuten and Mercari run English-first engineering organizations and hire foreigners at scale. Google Japan, Amazon (AWS Japan), and Microsoft Japan pay the highest base salaries and operate almost entirely in English. Mid-size scale-ups like SmartHR, Money Forward, and Ubie move faster in hiring and sponsor visas reliably without requiring fluent Japanese.

Do I need Japanese to work at a tech company in Japan?

Not always. Rakuten, Mercari, and most foreign-capital firms (Google, Amazon, Microsoft) run engineering in English. LY Corporation, Sony, and most traditional Japanese enterprises require business-level Japanese (JLPT N2+) outside specific global teams. Japanese ability still raises your salary ceiling and widens which roles you qualify for.

Which tech skills are most in demand in Japan right now?

Backend engineering (Go, Python, Java, Kotlin), cloud and DevOps (AWS, GCP, Azure), AI and machine learning, cybersecurity, data engineering, and mobile development are the most requested skills across AI-Recruit's database of 2,500+ companies. Senior backend and AI/ML roles see the strongest premium for foreign candidates.

Do Japanese tech startups sponsor work visas?

Funded startups with 50+ employees sponsor regularly — companies like SmartHR, Ubie, Andpad, Paidy, and Sansan have established sponsorship processes. Early-stage startups under 30 people sometimes lack the HR infrastructure to complete the Certificate of Eligibility application reliably, so confirm sponsorship status before investing time in the interview process.

Should I work at a Japanese corporate or a startup as a foreigner?

Large corporates and foreign-capital firms (Sony, Google, Amazon) offer stability, structured benefits, and clearer visa processes. Startups and scale-ups (Mercari, SmartHR, Ubie) offer faster English-first hiring, broader role scope, and quicker promotion paths, with somewhat more variance in stability. The right choice depends on your visa timeline and risk tolerance.

How much do foreign tech professionals earn in Japan?

Entry-level foreign professionals typically earn ¥3.5–4.5M per year. Mid-level engineers with 3-7 years of experience and bilingual ability earn ¥5–7M. Senior and specialist roles range ¥8–12M, and director-level positions at foreign-capital firms can exceed ¥15M in total compensation, per doda's 2025 foreign-worker salary data. See our full salary breakdown for ranges by role and company tier.

How do I find which companies are hiring foreigners right now?

Lists of foreigner-friendly companies go stale fast — hiring freezes and budget shifts happen quarterly. AI Recruit's database of 2,500+ companies in Japan is filtered by current English-friendliness and active visa sponsorship, so you see live openings rather than a static, outdated list.

Weighing an offer or deciding which tier to target? AI Recruit's advisors — with executive and VC-level experience in Japan's tech and hiring market — can give you a direct read on where your profile actually fits. Ask an advisor →