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Top Blockchain Companies & Developers in Helsinki

Ratings Updated: September 19, 2026
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8 Companies

Country: Finland
City: Helsinki

List of the Top Helsinki Blockchain Development Companies

  • Featured

    What are Featured Providers?

    Nextrope Logotype

    Nextrope

    5.0 18 reviews
    Premier Verified
    $25,000+
    $50 - $99 / hr
    10 - 49
    Serves Helsinki, Finland

    Services provided

    70% Blockchain
    30% Custom Software Development

    Nextrope is a Blockchain Development company specializing in Blockchain Solutions, Smart Contract Development, and Crypto Application Development. All reviews highlight their proactive approach, adaptability, and strong sense of ownership, with 100% positive feedback on their ability to align technological and business strategies effectively. Their expertise contributed to a 60% reduction in manual work and faster investment processes.

    See all 18 projects
    1 of 1 Blockchain reviews are 5 stars
    $10,000 – $49,000 avg. project cost

    Blockchain PROJECT HIGHLIGHT

    Blockchain Platform Dev for Real Estate Investment Platform

    5.0 — Nextrope developed a blockchain-based real estate tokenization platform for a real estate investment platform. The team designed the system's core architecture and developed the front- and backend. Read more
    Read 1 Review

    Industry Experience

    Nextrope has garnered positive feedback across multiple industries, including Real Estate, Business Services, Financial Services, Education, and Information Technology. Their expertise in blockchain solutions, project management, and adaptability has been highlighted, particularly for developing platforms and consulting on tokenization processes. Clients praised their proactive communication, timely delivery, and ability to provide tailored solutions. Overall, sentiments are highly favorable, suggesting that they are well-suited for projects in technology-driven sectors, particularly those involving blockchain and digital platforms.

    Read All Reviews

    Select Industry to see insights

    Information technology Financial services IT Services Education Engineering Retail Media Business services Real estate Manufacturing

    Average Project Cost Breakdown

    $10,000 to $49,000 (10) Less than $10,000 (4) $50,000 to $199,999 (2)

    What Clients Have Said

    Nextrope is frequently noted for providing excellent value for money, with clients highlighting their cost-effectiveness relative to the quality of service delivered. For instance, one CEO mentioned selecting Nextrope for their 'good value for cost,' while another emphasized the 'high quality of work' achieved within a 'reasonable budget.' Overall, clients express strong satisfaction with Nextrope's pricing, describing their services as both affordable and of high quality, contributing to successful project outcomes.
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    More responsive than most other service providers

    Nextrope is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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    View Profile Visit Website
    RedDuck Logotype

    RedDuck

    5.0 16 reviews
    Verified
    $5,000+
    $50 - $99 / hr
    10 - 49
    Serves Helsinki, Finland

    Services provided

    90% Blockchain
    10% Web Development

    RedDuck is a Blockchain Development firm specializing in Smart Contract Development, Distributed Ledger Technology, and Decentralized Application Development. They consistently receive positive feedback for their technical proficiency, with approximately 95% of reviewers commending their project management and responsiveness. Clients particularly appreciate their strategic vision and ability to deliver comprehensive blockchain solutions that align with business objectives.

    See all 16 projects
    3 of 3 reviews are 5 stars
    2 new reviews for Blockchain services
    $50,000 – $199,999 avg. project cost

    Reviewed 3 times in the past 6 months

    RedDuck has received positive feedback over the past six months, with clients highlighting their effective communication and timely project delivery. One client praised their ability to meet deadlines while being attentive to needs, and another noted RedDuck's proactive problem-solving approach. Additionally, a client emphasized the successful deployment of complex blockchain solutions, showcasing RedDuck's technical expertise. Overall, clients express satisfaction with RedDuck's performance and the quality of their deliverables, indicating a strong fit for collaborative projects.
    Read 3 Recent Reviews
    7 of 7 Blockchain reviews are 5 stars
    2 new reviews for Blockchain in past 6 months
    $50,000 – $199,999 avg. project cost

    Blockchain PROJECT HIGHLIGHT

    Blockchain Development for FinTech Company

    5.0 — RedDuck developed a DeFi platform for a financial technology company. The team built the client's smart contracts, backend infrastructure, frontend app, user dashboard, landing website, and a Read more
    Read 7 Reviews

    Average Project Cost Breakdown

    $50,000 to $199,999 (7) $10,000 to $49,000 (1)

    What Clients Have Said

    RedDuck has received positive feedback regarding its overall value for money. Clients frequently highlighted the good value for cost, with one stating they chose RedDuck for its pricing fit within their budget. Another client emphasized that RedDuck delivered a full-featured solution within the agreed budget and timeframe, while several reviews noted satisfaction with timely deliveries and high-quality work. Overall, the sentiment reflects that clients feel they received significant value relative to their investment.
    Read All Reviews
    $6,400 Allocation of an ethereum smart-contract developer $9,600 Allocation of a senior ethereum developer RWA/DeFi $12,800 Allocation of a tech-lead developer RWA/DeFi/Web3

    Software Development (Ethereum/EVM)

    Development of Blockchain/Web3 software focusing on smart-contracts / DeFi / RWA on Ethereum network.
    View Packages
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  • Altoros Logotype

    4.8 34 reviews
    $25,000+
    $50 - $99 / hr
    250 - 999
    Helsinki, Finland

    Services provided

    40% Blockchain
    25% Custom Software Development
    10% Enterprise App Modernization +4 services
    10% Web Development
    5% IT Staff Augmentation
    5% Microservices Architecture Services
    5% Mobile App Development

    Altoros is a software development company specializing in custom software solutions, including web and mobile development, UX design, and staff augmentation. The reviews are overwhelmingly positive, with 90% highlighting their professionalism and effective communication. Clients commend Altoros for their timely delivery, adaptability, and high-quality work, although there is a suggestion for improved transparency in cybersecurity compliance.

    See all 34 projects

    Industry Experience

    Altoros has garnered positive feedback across various industries, notably in Financial Services, Software Development, and Media. Clients commend their expertise in fintech solutions and mobile app development, highlighting timely communication, project management, and technical proficiency. In Financial Services, they excel in creating automated workflows and SaaS applications. In Software Development, their team complements existing resources effectively, while in Media, they contribute significantly to user-centric tools. Overall, Altoros is recommended for clients seeking reliable technology partners across these sectors.

    Read All Reviews

    Select Industry to see insights

    Financial services Food & Beverages Agriculture Engineering Healthcare Advertising & marketing Other Industry Information technology Consumer Products Research Software Media IT Services

    Average Project Cost Breakdown

    $200,000 to $999,999 (8) $50,000 to $199,999 (6) $10,000 to $49,000 (4) $1,000,000 to $9,999,999 (4) Less than $10,000 (1)

    What Clients Have Said

    Clients consistently express satisfaction with Altoros' pricing and overall value. Feedback highlights 'good value for cost' and 'impressive pricing' as significant factors for selecting Altoros. One client noted that Altoros delivered quality work under budget and ahead of schedule, while another emphasized their ability to provide high-quality engineers at reasonable rates. Overall, clients appreciate the balance of cost and quality, often remarking that Altoros offers exceptional service compared to competitors.
    Read All Reviews

    Helsinki, Finland

    2 Kyllikinportti
    Helsinki, Finland 00240

    16 - 20

    +358 50 598 6600

    See All Locations (11)

    Review Rating from Clients

    5.0/5.0

    Quality

    4.5

    Schedule

    4.5

    Cost

    4.5

    Willing to Refer

    5.0

    Local clients highlight Altoros's ability to develop custom SaaS products efficiently, with a focus on clear workflows and collaborative feedback. They appreciate their proactive communication, technical skill, and commitment to meeting tight deadlines in high-priority projects.
    Read Local Reviews
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  • TX Tomorrow Explored Oy Logotype

    5.0 3 reviews
    Undisclosed
    $100 - $149 / hr
    10 - 49
    Helsinki, Finland

    Services provided

    50% Blockchain
    25% Blockchain Marketing
    25% UX/UI Design

    TX Tomorrow Explored Oy is a Blockchain Development company specializing in blockchain solutions, tokenomics, and smart contract development. Client feedback highlights their meticulous project management and quality of deliverables, with 100% of reviews praising their attention to detail and effective communication. Clients appreciate their structured discovery process, leading to successful outcomes in decentralized system development.

    See all 3 projects

    Reviews mention Open to feedback

    Clients have expressed a positive sentiment regarding TX Tomorrow Explored Oy's openness to feedback. One client noted their diligence in documenting conversations and their responsiveness to changes, highlighting a quick turnaround on iterations. The company's structured discovery process was praised for its effectiveness in understanding client needs, resulting in a superb final product. Overall, clients appreciate the collaborative approach and adaptability displayed throughout the project.
    • Blockchain Development for Blockchain Company
      5.0 Mar 31, 2023

      They kept diligent notes of our conversations, made changes according to feedback, and had a quick turn around on iterations.

      Read Full Review
    Read All Reviews
    2 of 2 Blockchain reviews are 5 stars
    Unknown avg. project cost

    Blockchain PROJECT HIGHLIGHT

    Web3 Design & Dev Services for Decentralized Data Network

    5.0 — A decentralized data network has hired TX Tomorrow Explored Oy for Web3 design and development services. They work on product design, blockchain interaction, smart contract development, and token Read more
    Read 2 Reviews

    Industry Experience

    TX Tomorrow Explored Oy has garnered positive feedback across several industries, including blockchain logistics, AI platforms, and software development. Clients commend their expertise in Web3 design, tokenomics, and project management, emphasizing their detail-oriented approach and strong collaboration skills. Overall sentiment is highly favorable, particularly in blockchain-related sectors, where their impact is noted for enhancing project clarity and quality. Potential clients in tech-focused industries, especially those involving decentralized solutions, would find them a fitting partner.

    Read All Reviews

    Select Industry to see insights

    IT Services Software

    Average Project Cost Breakdown

    What Clients Have Said

    Clients consistently praise TX Tomorrow Explored Oy for their excellent value for money and cost-effectiveness. One client highlighted the company's 'good value for cost,' while another noted the significant savings achieved through their expertise. Overall, the sentiment reflects satisfaction with the pricing relative to the quality of service provided, with clients emphasizing timely delivery and attention to detail as key factors enhancing the perceived value.
    Read All Reviews
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  • Keytech OY Logotype

    5.0 1 review
    $10,000+
    $50 - $99 / hr
    10 - 49
    Helsinki, Finland

    Services provided

    10% Blockchain
    50% Mobile App Development
    20% IoT Development +2 services
    10% E-Commerce Development
    10% Web Development

    Keytech OY is a web and mobile app development company known for its effective project management and cost-efficient services. With a small team of 2-5 employees, 100% of reviewers highlight their experienced team and ability to integrate with existing software. However, 100% of reviewers also suggest improving communication regarding project updates.

    See all 1 projects

    Industry Experience

    Keytech OY has garnered positive feedback in the automotive industry, specifically for their web and mobile application development services. Clients highlight their expertise in enhancing operational efficiency and communication within car service companies. The overall sentiment reflects satisfaction with their project management and value for cost, though suggestions for improving communication on deliverables were noted. This indicates that potential clients in the automotive sector can expect a reliable partnership focused on technological improvements.

    Read All Reviews

    Select Industry to see insights

    Automotive

    Average Project Cost Breakdown

    $50,000 to $199,999 (1)

    What Clients Have Said

    Keytech OY is noted for providing good value for cost, as highlighted by a client who appreciated their pricing fitting within budget constraints. The client emphasized the company's effective project management and the positive outcomes, including time and cost savings. Overall, sentiment regarding pricing and value indicates satisfaction, though there is a suggestion for improved communication about project updates.
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  • Oivan Logotype

    4.5 13 reviews
    $10,000+
    $50 - $99 / hr
    50 - 249
    Helsingfors, Finland

    Services provided

    10% Blockchain
    25% Web Development
    15% Custom Software Development +5 services
    15% Cybersecurity
    15% Mobile App Development
    10% Application Management & Support
    5% Cloud Consulting & SI
    5% UX/UI Design

    Oivan, a versatile IT services company, specializes in IT infrastructure, operations, and software development. The majority of reviews highlight Oivan's exceptional expertise and flexibility, with 100% of clients praising their project management and communication skills. Their ability to customize solutions to meet specific business needs is frequently noted, making them a respected partner in technology-driven projects.

    See all 13 projects

    Reviews mention Team players

    Client feedback highlights Oivan's team-oriented approach, emphasizing their ability to collaborate effectively. A notable instance includes a client remarking that Oivan's team 'really got into our solution,' demonstrating a deep understanding of the project's challenges. Additionally, the client appreciated the team's willingness to brainstorm and express interest in the service, indicating a strong partnership. Overall, the sentiment reflects a positive view of Oivan as a dedicated and engaged team player in project execution.
    • UI/UX Design for Sustainable Startup
      4.5 Mar 16, 2020

      IWA really got into our solution, the problem it solves, and the challenges we face. Their team even expressed interest in using our service, identifying themselves as ideal customers of the platform. Whether they meant it or not, that really helped in the project.

      Read Full Review
    Read All Reviews

    Average Project Cost Breakdown

    $10,000 to $49,000 (4) $50,000 to $199,999 (4) Less than $10,000 (2) $200,000 to $999,999 (1)

    What Clients Have Said

    Oivan's clients generally express satisfaction with the company's cost and value for money. Feedback highlights that their pricing is reasonable, with one client noting a project cost of around $6,000, which they deemed a very good deal. Another client mentioned being on budget and on schedule, emphasizing the fair pricing for the services provided. Overall, clients appreciate the clarity and practicality of Oivan's recommendations, indicating that they receive good value relative to their investment.
    Read All Reviews

    View projects from:

    Finland (10) Saudi Arabia (1) Thailand (1)

    Review Rating from Clients

    4.4/5.0

    Quality

    4.5

    Schedule

    4.2

    Cost

    4.4

    Willing to Refer

    4.8

    Local clients commend IWA for their comprehensive project management, innovative approach, and ability to adapt quickly to changing requirements. They appreciate the company's close collaboration, technical proficiency, and consistent delivery of high-quality digital products that meet their strategic goals.
    Read Local Reviews
    View Profile
  • Blockchain Business Security Solutions Finland Logotype

    Not yet reviewed

    $100,000+
    $300+ / hr
    2 - 9
    Helsinki, Finland

    Services provided

    100% Blockchain

    Blockchain company Blockchain Business Security Solutions Finland was founded in 2022. The team focuses on Blockchain and is based in Helsinki, Finland.

    Read more
    View Profile
  • Nordivo Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    10 - 49
    Helsinki, Finland

    Services provided

    100% Blockchain

    Nordivo is a small Helsinki, Finland-based Blockchain company. Their services include Blockchain.

    Read more
    View Profile
  • Seita Technologies Oy Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Helsinki, Finland

    Services provided

    40% Blockchain
    20% Custom Software Development
    10% E-Commerce Development +3 services
    10% IT Managed Services
    10% IT Strategy Consulting
    10% Mobile App Development

    Seita Technologies Oy is a Helsinki, Finland-based Blockchain company. Launched in 2012, the team provides Blockchain and Custom Software Development.

    Read more
    View Profile
  • HeyDay Pro Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    10 - 49
    Helsinki, Finland

    Services provided

    25% Blockchain
    25% AR/VR Development
    20% BI & Big Data Consulting & SI +2 services
    15% AI Development
    15% IoT Development

    Established in 2000, HeyDay Pro is a small Helsinki, Finland-based AR/VR development company. Their team provides AR/VR development and Blockchain.

    Read more
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Rollover to see company insights or click a company below for more details.

1 Altoros
2 TX Tomorrow Explored Oy
3 Keytech OY
4 Oivan

List of the Top 4 Helsinki Blockchain Development Companies

  1. Altoros Logotype

    Altoros

    $25,000+
    $50 - $99 / hr
    250 - 999
    Helsinki, Finland

    Ability to deliver

    35.7/40.0
    16.2/20 Reviews
    10/10 Clients & Experience
    9.5/10 Market Presence

    Service focus

    40% Blockchain
    60% Other
    View Profile Visit Website
  2. TX Tomorrow Explored Oy Logotype

    TX Tomorrow Explored Oy

    Undisclosed
    $100 - $149 / hr
    10 - 49
    Helsinki, Finland

    Ability to deliver

    31.4/40.0
    16.2/20 Reviews
    9.9/10 Clients & Experience
    5.3/10 Market Presence

    Service focus

    50% Blockchain
    50% Other
    View Profile Visit Website
  3. Keytech OY Logotype

    Keytech OY

    $10,000+
    $50 - $99 / hr
    10 - 49
    Helsinki, Finland

    Ability to deliver

    23.7/40.0
    16.2/20 Reviews
    2.2/10 Clients & Experience
    5.3/10 Market Presence

    Service focus

    10% Blockchain
    90% Other
    View Profile Visit Website
  4. Oivan Logotype

    Oivan

    $10,000+
    $50 - $99 / hr
    50 - 249
    Helsingfors, Finland

    Ability to deliver

    23.4/40.0
    14.6/20 Reviews
    3.6/10 Clients & Experience
    5.2/10 Market Presence

    Service focus

    10% Blockchain
    90% Other
    View Profile Visit Website
  5. Blockchain Business Security Solutions Finland Logotype

    Blockchain Business Security Solutions Finland

    $100,000+
    $300+ / hr
    2 - 9
    Helsinki, Finland

    Ability to deliver

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

    Service focus

    100% Blockchain
    View Profile Visit Website
  6. Nordivo Logotype

    Nordivo

    $10,000+
    $50 - $99 / hr
    10 - 49
    Helsinki, Finland

    Ability to deliver

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

    Service focus

    100% Blockchain
    View Profile Visit Website
  7. Seita Technologies Oy Logotype

    Seita Technologies Oy

    Undisclosed
    Undisclosed
    10 - 49
    Helsinki, Finland

    Ability to deliver

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

    Service focus

    40% Blockchain
    60% Other
    View Profile Visit Website
  8. HeyDay Pro Logotype

    HeyDay Pro

    $5,000+
    $100 - $149 / hr
    10 - 49
    Helsinki, Finland

    Ability to deliver

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

    Service focus

    25% Blockchain
    75% Other
    View Profile Visit Website

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