Top Blockchain Companies & Developers in Helsinki

Ratings Updated: August 24, 2026

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8 Companies

Country: Finland

City: Helsinki

List of the Top Helsinki Blockchain Development Companies

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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.

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Reviews mention Efficient
Nextrope has consistently received positive feedback regarding their efficiency in project execution. Clients noted their 'great efficiency and speed' in conducting audits and delivering services without delays. For instance, one client praised the team for their 'fantastic ability to recognize our needs,' which facilitated a smooth workflow. Another emphasized the 'attention to detail' coupled with rapid delivery of materials, highlighting Nextrope's commitment to timely and effective project management.

Cybersecurity Audit for Blockchain-Based Company

5.0 Dec 8, 2021

Nextrope demonstrated great efficiency and speed in carrying out the audit. There were no unnecessary delays.
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Digital Marketing for Blockchain Conference

4.5 Apr 1, 2020

Attention to detail in delivering materials, with the simultaneous efficiency in doing so very quickly.
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Research & Design for Blockchain Music Streaming Service

5.0 Apr 1, 2020

Nextrope works extremely efficiently and pragmatically. The Nextrope team understood our hosting needs perfectly and recognized the importance of the smart contracts.
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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
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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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RedDuck

5.0 15 reviews

Verified

$5,000+

$50 - $99 / hr

10 - 49

Serves Helsinki, Finland

Services provided

90% Blockchain

10% Web Development

RedDuck is a Blockchain Development company specializing in Distributed Ledger Technology, Smart Contract Development, and Decentralized Application (DApp) Development. Reviews highlight their strong project management skills and responsiveness, with 100% positive feedback on their ability to meet deadlines and adapt to client needs. Clients frequently commend their technical precision and strategic approach, ensuring high-quality deliverables.

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2 of 2 reviews are 5 stars

1 new review for Blockchain services

$50,000 – $199,999 avg. project cost

Reviewed 2 times in the past 6 months
In the last six months, RedDuck has received positive feedback for their project delivery and communication. Clients noted timely completion of projects, with one stating they appreciated RedDuck's attentiveness to needs and ability to meet deadlines. The COO of NYM Technologies praised their straightforward approach and value for cost, while the founder of Hypersimplex highlighted a strong cultural fit and satisfaction with their deliverables. Overall, client sentiment reflects high satisfaction with RedDuck's performance.
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6 of 6 Blockchain reviews are 5 stars

1 new review 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
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Industry Experience

RedDuck has garnered positive feedback across multiple industries, particularly in Financial Services and Telecommunications. Clients commend their expertise in blockchain development, UI/UX design, and project management, highlighting successful implementations in decentralized finance and API solutions. The Gaming and Information Technology sectors also recognize their strong coding skills and adaptability. Overall, RedDuck is well-regarded for delivering timely, high-quality solutions, making them a strong candidate for projects within these sectors.
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Financial services Logistics & Supply Chain Gaming Other Industry Information technology

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More responsive than most other service providers

RedDuck is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
Get in Touch

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Altoros

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.

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Reviews mention Well-executed projects
Clients express strong satisfaction with Altoros's project execution, noting their impressive ability to deliver results efficiently and effectively. One CEO highlighted that Altoros completed tasks in a fraction of the time compared to previous partners, demonstrating exceptional project management and technical skills. The team’s proactive approach, including researching advanced computing methods for scalability, further impressed clients. Overall, feedback indicates that Altoros consistently meets or exceeds expectations, making them a preferred choice for offshore partnerships.

Custom Software Dev for Software Development Company

5.0 Nov 3, 2022

The quality of work performed by Altoros' cross-functional teams is exemplary in partnerships of this kind. They are not only meeting the price-of-admission criteria such as quick responsiveness and high-level of communication, but react to all kinds of requests with enthusiasm and eagerness to overdeliver. And what has always been of the utmost importance in any professional partnership - the team deals with ambiguity with true professionalism and preparation, meaning whenever we requested resources (many times last-minute) - they’ve always provided us with simple and clear next steps and typically fulfilled our staffing needs within 2-3 business days.
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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.
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Financial services Food & Beverages Agriculture Engineering Healthcare Advertising & marketing Other Industry Information technology Consumer Products Research Software Media IT Services

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View projects from:

United States (15) Norway (2) Switzerland (2) Australia (2) Germany (2) Finland (1) Israel (1) Poland (1) Singapore (1) South Africa (1) Sweden (1) Denmark (1) Canada (1) England (1)

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Helsinki, Finland

2 Kyllikinportti
Helsinki, Finland 00240
16 - 20

+358 50 598 6600

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TX Tomorrow Explored Oy

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.

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Reviews mention Well-organized projects
Clients have consistently praised TX Tomorrow Explored Oy for their well-organized project management. One client noted their diligent note-taking and quick turnaround on iterations, which facilitated effective communication and responsiveness to feedback. Additionally, the structured discovery process implemented by the team was highlighted as a key factor in delivering a superb final product that met the client's needs.

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. They ran a specific process for discovery that helped them thoroughly understand what we wanted them to design, and they used that to deliver a finished product that was superb!
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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
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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.
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IT Services Software

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United States (2) Switzerland (1)

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Keytech OY

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.

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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.
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Automotive

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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

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.

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Reviews mention Open to feedback
Overall, Oivan demonstrates a strong openness to feedback, as highlighted by multiple clients. One client noted their project manager was 'open-minded and responsive,' facilitating thorough discussions to ensure understanding of project goals. Another client appreciated how IWA quickly adapted to financial sector requirements and actively sought feedback to enhance project delivery. While there were minor communication challenges initially, Oivan's willingness to learn and improve was consistently recognized, resulting in a positive collaborative experience.

iOS Dev for Investors

4.5 Aug 7, 2017

Even though there were some challenges now and then, the project ran fine. IWA was growing fast as a company during the project. They doubled their personnel, and I can understand what this is like, having worked in startups. When we started, IWA was a reasonably small company, but they’ve come to grow significantly, and have developed their processes quite well. They were always eager to get our feedback and make things smoother and smoother. I have no particular topics to address.
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Responsive Web Dev for Religious Institution

4.0 Apr 6, 2018

The project manager was friendly, open-minded, and responsive. We met nearly 10 times during the engagement. Otherwise, we communicated via email and digital project management platforms.
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Industry Experience

Oivan has demonstrated strong expertise across various industries, including Financial Services, Real Estate, Education, and Arts & Entertainment. Clients commend Oivan for their clear, practical recommendations, reliability, and ability to understand business needs. Overall sentiment is positive, especially in Financial Services and Real Estate, where Oivan's technical skills and project management have received high praise. Their adaptability and collaborative approach make them a suitable partner for startups and established businesses alike.
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Financial services Education Real estate IT Services Arts, entertainment & music Nonprofit Other Industry

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

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Blockchain Business Security Solutions Finland

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.
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Nordivo

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.
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Seita Technologies Oy

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.
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HeyDay Pro

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.
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Ability to deliver

Focus

Proven

Market Leaders

Emerging

Niche

Clutch Leaders Matrix

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

A Clutch Leaders Matrix provides a broad view of the top-performing companies in a particular service or location. Each company featured in a Leaders Matrix is evaluated based on Focus and Ability to Deliver. The size of each circle indicates that company’s size.

By using verified reviews, focused service details, and real project data, the Leaders Matrix highlights companies that consistently deliver and stand out from the rest. Each company’s position is based on how well they focus on a service area and how consistently they deliver results, helping you make informed, confident decisions. Learn More

Focus (x-axis)

Focus accounts for a company’s specialization within a certain service.

Ability to Deliver (y-axis)

Ability to Deliver considers three criteria:

Client feedback and reviews
Work experience and previous projects
Market presence and reputation in the industry

List of the Top 4 Helsinki Blockchain Development Companies

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

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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

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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

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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

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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

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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

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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

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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

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Top Blockchain Companies & Developers in Helsinki

List of the Top Helsinki Blockchain Development Companies

Reviews mention Efficient

Cybersecurity Audit for Blockchain-Based Company

Digital Marketing for Blockchain Conference

Research & Design for Blockchain Music Streaming Service

Blockchain Platform Dev for Real Estate Investment Platform

Average Project Cost Breakdown

What Clients Have Said

Nextrope is very responsive

Reviewed 2 times in the past 6 months

Blockchain Development for FinTech Company

Industry Experience

Select Industry to see insights

RedDuck is very responsive

Reviews mention Well-executed projects

Custom Software Dev for Software Development Company

Industry Experience

Select Industry to see insights

Reviews mention Well-organized projects

Blockchain Development for Blockchain Company

Web3 Design & Dev Services for Decentralized Data Network

Industry Experience

Select Industry to see insights

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Open to feedback

iOS Dev for Investors

Responsive Web Dev for Religious Institution

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

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List of the Top 4 Helsinki Blockchain Development Companies

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