Top 30 Java Development Companies in Japan

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Top 30 Java Development Companies in Japan

The Best of December 2025

Looking for a top Java developer in Japan?

Getting started with the Java programming language can be difficult, especially when you go at it alone.

To assist you in your search for a partner, we’ve compiled this list of the top Java development companies in Japan. 

List of the Best Japan Java Developers

  • 1
    (4 Reviews) 4.9

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    4.9
    $10,000+
    10 - 49 employees
    Shimizu, Japan

    MaeBe co., Ltd is an app development company. They are located in Shimizu, Japan and Numazu, Japan and have a small team. Their services include mobile app development, web development, enterprise app modernization, e-commerce development, and more.

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    Industries

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  • 2
    (2 Reviews) 5.0

    Timeliness

    4.8

    Service Excellence

    4.5

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    50 - 249 employees
    Minato City, Japan
    IT managed services company Fusion Systems Japan is headquartered in Minato City, Japan. They focus on IT managed services, IT strategy consulting, Custom Software Development, and other IT consulting and SI and were launched in 1989.
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  • 3
    (1 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    Undisclosed
    10 - 49 employees
    Chuo City, Japan
    Located in Chuo City, Japan, SBWorks is an ERP consulting and SI company. They provide ERP consulting and SI, IT staff augmentation, Web Development, Artificial Intelligence, and more and were launched in 2016.
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    Industries

  • 4
    (0 Reviews)

    Not yet reviewed.

    $10,000+
    50 - 249 employees
    Yokohama, Japan
    Hikesiya USA Inc. Is a midsize custom software development company launched in 2001. Their services include Custom Software Development and ERP consulting and SI.
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  • 5
    (3 Reviews) 5.0

    Timeliness

    4.7

    Service Excellence

    4.7

    Value

    4.7

    Would Recommend

    5.0
    $5,000+
    1,000 - 9,999 employees
    Minato City, Japan

    Since being founded in 2012, Rikkeisoft has provided global outsourcing and development services to clients from its headquarters in Hanoi, Vietnam. Their team of about 1200 employees focuses on custom software development, web development, and mobile app development.

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    Clients

    Panasonic USMH KDDI

    Industries

  • 6
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    50 - 249 employees
    Taito City, Japan
    LIG inc. Is a website development company established in 2007. Their services include Web Development and Mobile App Development.
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    Industries

  • 7
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    2 - 9 employees
    Hachioji, Japan
    Interactor Ltd. Is a software development company. Launched in 2020, the company is based in Hachioji, Japan. Their services include Custom Software Development and Web Development.
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    Industries

  • 8
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    10 - 49 employees
    Ichikawa, Japan
    Launch Lab is an Ichikawa, Japan-based branding agency. Their services include Branding and Content Marketing.
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  • 9
    (5 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    5.0

    Would Recommend

    4.9
    $5,000+
    50 - 249 employees
    Fukuoka, Japan

    Vauldex is a website development firm. Their midsize team is based in Fukuoka, Japan and Cebu City, Philippines. The firm offers Web Development, Mobile App Development, Blockchain, Enterprise App Modernization, and more.

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    Industries

  • 10
    (0 Reviews)

    Not yet reviewed.

    $100,000+
    Freelancer employees
    Koto City, Japan
    Founded in 1977, PERSOL PROCESS & TECHNOLOGY is a custom software development firm. The large team offers Custom Software Development and cloud consulting & SI.
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    Industries

  • 11
    (1 Reviews) 4.5

    Timeliness

    5.0

    Service Excellence

    4.0

    Value

    4.0

    Would Recommend

    4.0
    $5,000+
    50 - 249 employees
    Chiyoda City, Japan
    Dipro Tech is a midsize Da Nang , Vietnam-based custom software development firm. They focus on Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more and were launched in 2021.
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    Clients

    SEASTAR PENTA OCEAN STEP TRAVEL DIOR

    Industries

  • 12
    (1 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $10,000+
    250 - 999 employees
    Dhaka, Bangladesh

    BJIT Group is a software development agency headquartered in Dhaka, Bangladesh with additional locations in Tokyo; Palo Alto, Calif.; Espoo, Finland; Downtown Core, Singapore; and Skane lan, Sweden. Since 2001, their global team of 400+ employees has provided mobile app, web, and custom software development to businesses of all sizes.

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    Clients

    Sony

    Industries

  • 13
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    1,000 - 9,999 employees
    Shinjuku City, Japan
    Headquartered in Ha Noi, Vietnam and Shinjuku City, Japan, VTI is an application development company. They focus on Mobile App Development and IoT development and were launched in 2017.
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    Industries

  • 14
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    1,000 - 9,999 employees
    Yokohama, Japan
    Founded in 2017, CMC Global is an IT staff augmentation company. The firm offers IT staff augmentation and Custom Software Development, and is large.
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    Clients

    Samsung SDS

    Industries

  • 15
    (6 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $25,000+
    250 - 999 employees
    Fukuoka, Japan
    IT staff augmentation company TECHVIFY was founded in 2018. The midsize team specializes in IT staff augmentation, Custom Software Development, IoT development, Artificial Intelligence, and more. The company is headquartered in Hanoi, Vietnam; Fukuoka, Japan; Danang, Vietnam and Ho Chi Minh, Vietnam.
    Read More

    Industries

  • 16
    (1 Reviews) 5.0

    Timeliness

    4.5

    Service Excellence

    5.0

    Value

    4.0

    Would Recommend

    5.0
    $1,000+
    250 - 999 employees
    Hanoi, Vietnam
    DEHA Vietnam is a Staffing company launched in 2016. Their midsize team is located in Hanoi, Vietnam; Singapore; Chuo City, Japan and Ho Chi Minh City, Vietnam. The agency provides Staffing, Mobile App Development, Web Development, Custom Software Development, and more.
    Read More

    Industries

  • 17
    (0 Reviews)

    Not yet reviewed.

    $10,000+
    50 - 249 employees
    Sendai, Japan
    Lanex Australia is a midsize software development firm headquartered in Brisbane City, Australia and Cebu City, Philippines. The team offers Custom Software Development and Web Development.
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  • 18
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    50 - 249 employees
    Minato City, Japan
    In Jung-gu, South Korea and Minato City, Japan, Asiance is a midsize custom software development firm. Their services include Custom Software Development and Digital Strategy.
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    Industries

  • 19
    (24 Reviews) 5.0

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.9

    Would Recommend

    5.0
    $5,000+
    250 - 999 employees
    Koto City, Japan

    AMELA Technology, a web development company, was established in 2019. The midsize team focuses on Web Development, Mobile App Development, IT staff augmentation, Artificial Intelligence, and more. The company is in Hanoi, Vietnam and Koto City, Japan.

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    Clients

    Skystree

    Industries

  • 20
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    250 - 999 employees
    Kawasaki, Japan
    Luvina Software JSC is a cloud consulting & SI company headquartered in Hanoi, Cau Giay, Vietnam and Danang, Vietnam. They focus on cloud consulting & SI and CRM consulting and SI.
    Read More

    Clients

    SI

    Industries

  • 21
    (0 Reviews)

    Not yet reviewed.

    $25,000+
    1,000 - 9,999 employees
    Yokohama, Japan
    NTQ SOLUTION, a custom software development company, was launched in 2011. The company provides Custom Software Development and IT staff augmentation, and is large.
    Read More
  • 22
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    Shibuya City, Japan
    BlueOC is a website development firm. Their midsize team of employees is located in Hanoi, Vietnam and Shibuya City, Japan. Their team focuses on Web Development and Mobile App Development.
    Read More
  • 23
    (9 Reviews) 4.8

    Timeliness

    4.8

    Service Excellence

    4.9

    Value

    4.7

    Would Recommend

    4.9
    $10,000+
    250 - 999 employees
    Seoul, South Korea
    In Hanoi, Vietnam; Mountain View, California; North Sydney, Australia and Seoul, South Korea, Savvycom Software is a midsize software development company. Established in 2009, the team focuses on Custom Software Development, IT staff augmentation, Web Development, Mobile App Development, and more.
    Read More

    Clients

    North America & Europe: TaylorMade

    Industries

  • 24
    (13 Reviews) 4.9

    Timeliness

    4.7

    Service Excellence

    4.4

    Value

    4.3

    Would Recommend

    4.5
    $50,000+
    250 - 999 employees
    Yokohama, Japan

    InApp was founded in 2000 and currently has 300+ employees. Headquartered in Trivandrum, India, their services include web development, custom software development, and mobile app development. They also have another location in Palo Alto, Calif.

    Read More

    Industries

  • 25
    (26 Reviews) 4.7

    Timeliness

    4.5

    Service Excellence

    4.7

    Value

    4.5

    Would Recommend

    4.8
    $25,000+
    250 - 999 employees
    Minato City, Japan
    Robosoft Technologies Inc. Is a San Francisco, California-based app development company. They offer Mobile App Development, UX/UI Design, Web Development, Custom Software Development, and more and were launched in 1996.
    Read More

    Clients

    Warner Bros. Discovery HSBC McDonalds Mercury Finance

    Industries

  • 26
    (46 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.8

    Value

    4.9

    Would Recommend

    4.9
    $25,000+
    1,000 - 9,999 employees
    Kawasaki, Japan
    TatvaSoft is a custom software development company headquartered in Ahmedabad, India; Murphy, Texas; Melbourne, Australia and London, England. Established in 2001, the large team focuses on Custom Software Development, Web Development, Mobile App Development, cloud consulting & SI, and more.
    Read More

    Clients

    Anglo American

    Industries

  • 27
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    København, Denmark
    Custom software development firm Star is located in Sunnyvale, California and San Francisco, California. Their services include Custom Software Development and Mobile App Development.
    Read More

    Industries

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