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Top Smart Contract Development Companies in Japan

Ratings Updated: April 2, 2026
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0 Leaders 4 Contenders

4 Companies

Country: Japan
Blockchain Focus: Smart Contract Development

List of the Top Japan Smart Contract Developers

  • AMELA Technology Logotype

    5.0 24 reviews
    Verified
    $5,000+
    < $25 / hr
    250 - 999
    Koto City, Japan

    Services provided

    10% Blockchain
    35% Web Development
    20% Mobile App Development +3
    15% IT Staff Augmentation
    10% AI Development
    10% Custom Software Development

    Focus Areas

    40% Smart Contract Development
    35% Web3
    15% Metaverse Development +2
    5% Ethereum Development
    5% Initial Coin Offering Consulting

    AMELA Technology is a distinguished Blockchain Development company known for its expertise in building decentralized systems and blockchain solutions. The reviews are overwhelmingly positive, highlighting the company's technical prowess and efficiency, with 100% of the feedback praising their project management and timely delivery. Notably, their ability to develop secure and scalable blockchain networks is highly commended.

    See all 24 projects

    Reviews mention Helpful

    Clients have expressed that AMELA Technology demonstrates exceptional professionalism and technical expertise, often exceeding expectations. One CEO highlighted their effective communication and project management, noting that the development team quickly addressed issues within hours. The collaboration was described as extensive, ensuring that all requirements were met, resulting in a successful app launch. Overall, clients appreciate the value offered at reasonable costs, with no significant areas for improvement identified.
    • Web & Mobile App Dev for Custom Software Dev Co
      5.0 Nov 13, 2023

      Their administration is incredibly nimble and lean. We exchanged emails with reports and spoke over Skype once a week. In a matter of hours, the AMELA development team swiftly fixed any issues we encountered.

      Read Full Review
    • Web & Mobile App Dev for Custom Software Dev Co
      5.0 Nov 13, 2023

      Their technical proficiency and professionalism were impressive. They also went above and beyond to help and counsel us so that we could offer the best options at the most reasonable costs. That is very important to me.

      Read Full Review
    Read All Reviews
    1 of 1 Blockchain reviews are 5 stars
    1 new review for Blockchain in past 6 months
    $50,000 – $199,999 avg. project cost

    Blockchain PROJECT HIGHLIGHT

    App Dev, Blockchain & IT Staff Aug for Business Services Co

    5.0 — AMELA Technology has provided staff to develop a Layer 1 EVM-compatible decentralized blockchain with a hybrid PoSA consensus mechanism for a business services company. The team has done a Read more
    Read 1 Review

    Industry Experience

    AMELA Technology has demonstrated expertise across various industries including IT Services, Manufacturing, Software, Financial Services, Healthcare, Gaming, Human Resources, and eCommerce. Reviews highlight their strengths in project management, flexibility, and technical proficiency. Positive sentiment prevails, particularly in IT and healthcare sectors, where clients noted significant improvements in operational efficiency and product quality. Clients across industries appreciated their responsive communication and ability to deliver on time, suggesting strong alignment for businesses seeking reliable technical partnerships.

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    Select Industry to see insights

    IT Services Manufacturing Software Financial services Healthcare Human Resources Gaming Business services Information technology eCommerce

    Koto City, Japan

    302, 5-chome-36-2, Kameido, Koto-ku, Tokyo, Japan
    Koto City, Japan 136-0071

    6 - 9

    (+84) 968 698 219

    See All Locations (2)
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  • SORAMITSU | 2016-2025 Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Shibuya, Japan

    Services provided

    20% Blockchain
    10% Application Testing
    10% Blockchain Marketing +6
    10% Corporate Training & Coaching
    10% Cybersecurity
    10% DevOps Managed Services
    10% Digital Strategy
    10% Marketing Strategy
    10% UX/UI Design

    Focus Areas

    50% Smart Contract Development
    50% Web3

    SORAMITSU | 2016-2025 is a Blockchain company. Founded in 2016, the firm focuses on Blockchain and Marketing Strategy.

    Read more
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  • BlueOC Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    50 - 249
    Shibuya City, Japan

    Services provided

    10% Blockchain
    20% Mobile App Development
    20% Web Development +4
    15% AR/VR Development
    15% IoT Development
    10% AI Development
    10% Cybersecurity

    Focus Areas

    100% Smart Contract Development

    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

    Shibuya City, Japan

    〒150-0002 TOKYU REIT Shibuya R Building B1, 3-10-13 Shibuya, Shibuya-ku
    Shibuya City, Japan 150-0002

    6 - 9

    +84 946668889

    See All Locations (2)
    View Profile

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  • SOTATEK JSC Logotype

    5.0 47 reviews
    $10,000+
    $25 - $49 / hr
    1,000 - 9,999
    Chuo City, Japan

    Services provided

    45% Blockchain
    15% Custom Software Development
    10% AI Development +3
    10% CRM Consulting and SI
    10% Mobile App Development
    10% Web Development

    Focus Areas

    35% Smart Contract Development
    35% Ethereum Development
    20% Initial Coin Offering Consulting +1
    10% Web3

    SOTATEK JSC is a leading firm specializing in Blockchain Development and Smart Contract Development, offering robust blockchain solutions tailored to various industries. Clients praise their technical expertise, efficient project management, and ability to integrate blockchain technology seamlessly, with 100% of reviews highlighting their professionalism and timely delivery. Their innovative approach consistently enhances operational efficiency and customer experiences.

    See all 47 projects

    Reviews mention Openness

    Clients consistently praised SOTATEK JSC for their openness and proactive communication throughout projects. One CEO highlighted their 'highly responsive' nature, stating that the team promptly addressed any issues, which contributed significantly to project success. Additionally, the commendable project management ensured timely delivery of items, reflecting a commitment to transparency and collaboration. Overall, the sentiment regarding SOTATEK's openness is overwhelmingly positive, with no noted areas for improvement.
    • Home System Dev for Software Engineering Company
      5.0 May 30, 2023

      The project management was commendable. The team consistently delivered items on time, ensuring a smooth workflow throughout. They were highly responsive to our needs, promptly addressing any issues or concerns that arose. Their proactive approach and open communication greatly contributed to the project's success.

      Read Full Review
    Read All Reviews
    3 of 3 Blockchain reviews are 5 stars
    1 new review for Blockchain in past 6 months
    $10,000 – $49,000 avg. project cost

    Blockchain PROJECT HIGHLIGHT

    Blockchain Development for Travel Platform

    5.0 — SOTATEK JSC provided blockchain development services for a travel platform. The team created and integrated smart contracts and a secure payment gateway to streamline the client's booking and Read more
    Read 3 Reviews

    View projects from:

    Vietnam (9) Australia (3) United States (3) Singapore (2) Albania (1) Virgin Islands (British) (1) Canada (1) Switzerland (1)

    Chuo City, Japan

    4F Matsuoka Ginchi Building, 7-17-14 Ginza, Chuo-ku
    Chuo City, Japan 104-0061

    6 - 9

    See All Locations (8)
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List of the Top Japan Smart Contract Developers

  1. SORAMITSU | 2016-2025 Logotype

    SORAMITSU | 2016-2025

    Undisclosed
    Undisclosed
    50 - 249
    Shibuya, Japan

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    20% Blockchain
    50% Smart Contract Development
    80% Other
    View Profile Visit Website
  2. AMELA Technology Logotype

    AMELA Technology

    $5,000+
    < $25 / hr
    250 - 999
    Koto City, Japan

    Ability to deliver

    35.3/40.0
    18/20 Reviews
    8.7/10 Clients & Experience
    8.5/10 Market Presence

    Service focus

    10% Blockchain
    40% Smart Contract Development
    90% Other
    View Profile Visit Website
  3. BlueOC Logotype

    BlueOC

    Undisclosed
    < $25 / hr
    50 - 249
    Shibuya City, Japan

    Ability to deliver

    4/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4/10 Market Presence

    Service focus

    10% Blockchain
    100% Smart Contract Development
    90% Other
    View Profile Visit Website
  4. SOTATEK JSC Logotype

    SOTATEK JSC

    $10,000+
    $25 - $49 / hr
    1,000 - 9,999
    Chuo City, Japan

    Ability to deliver

    36.4/40.0
    16.8/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

    45% Blockchain
    35% Smart Contract Development
    55% Other
    View Profile Visit Website

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Specialties

Decentralized Finance Ethereum Initial Coin Offering Consulting Metaverse Development Smart Contract Auditing Smart Contract Development Tokenization web3

Popular Locations in Japan

Smart Contract Development in Tokyo
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