Top Blockchain Companies & Developers in Helsinki

Ratings Updated: March 29, 2026

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4 Leaders 4 Contenders

8 Companies

Country: Finland

City: Helsinki

List of the Top Helsinki Blockchain Development Companies

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RedDuck

5.0 13 reviews
Verified

$10,000+

$50 - $99 / hr

10 - 49

Serves Helsinki, Finland

Services provided

100% Blockchain

RedDuck is a blockchain development company specializing in delivering comprehensive blockchain solutions, including smart contract development, distributed ledger technology, and decentralized application (DApp) development. Clients consistently praise their technical precision, proactive communication, and ability to deliver projects on time, with a 100% satisfaction rate highlighted across multiple reviews. Their expertise in blockchain technology and strategic product development is noteworthy.

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Reviews mention Professional
Clients consistently highlight RedDuck's exemplary professionalism, noting their ability to manage complex projects with technical precision and creativity. One client emphasized their clear communication and responsiveness, stating, 'RedDuck showed a high level of professionalism and adaptability to our evolving requirements.' Another praised their structured approach, which left little room for concern, indicating a strong commitment to client success and satisfaction. Overall, feedback reflects a positive sentiment towards RedDuck's professional capabilities.

Blockchain Development for FinTech Company

5.0 Apr 23, 2025

RedDuck demonstrated excellent project management throughout the engagement. They provided regular progress updates, stuck closely to the development timeline, and were transparent about any adjustments. Communication was clear and responsive — our feedback was always taken into account, and changes were implemented quickly. Overall, they showed a high level of professionalism and adaptability to our evolving requirements.
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5 of 5 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
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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.
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Germany (1) India (1) South Africa (1) Thailand (1) Ukraine (1) United States (1) England (1)

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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 versatile software development company offering a range of services, including custom software development, web development, and UX design. Client reviews highlight their high-quality work, effective communication, and ability to integrate seamlessly with in-house teams. Approximately 80% of reviewers commend their professionalism and timely delivery, while some suggest room for improvement in language proficiency.

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Industry Experience

Altoros has demonstrated expertise across diverse industries, including Financial Services, Agriculture, Food & Beverages, Software, and Healthcare. Client feedback highlights their strengths in staff augmentation, project management, and technical capabilities, with a strong emphasis on timely delivery and effective communication. Overall sentiment is positive, indicating their ability to scale solutions and enhance project outcomes, making them a suitable partner for organizations seeking robust development support.
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Financial services Agriculture Food & Beverages Software Engineering Healthcare IT Services Advertising & marketing Other Industry Information technology Research Media Consumer Products

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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 highlight Altoros' value for money, noting their competitive pricing relative to the quality of work delivered. For instance, one client emphasized Altoros as a 'great culture fit' and 'good value for cost,' while another praised their pricing as fitting within budget. Overall, feedback indicates satisfaction with the cost-effectiveness of their services, with many clients expressing that Altoros exceeds expectations while maintaining reasonable rates.
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Helsinki, Finland

2 Kyllikinportti
Helsinki, Finland 00240
16 - 20

+358 50 598 6600

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Review Rating from Clients

5.0/5.0

Quality

4.5

Schedule

4.5

Cost

4.5

Willing to Refer

5.0

Reviewers in Espoo highlight Altoros's expertise in custom SaaS and mobile app creation, emphasizing their quick, results-driven delivery within five months. Their flexible team and transparent communication foster effective collaboration on complex, technology-driven projects.
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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 High-quality work
Clients consistently commend TX Tomorrow Explored Oy for delivering high-quality work, particularly in areas like whitepaper creation and Web3 design. Feedback highlights their meticulous attention to detail, timely delivery, and effective communication. One client noted their 'superb' finished product, while another emphasized the 'quality and attention to detail' that significantly contributed to their brand's reputation in the Web3 field. Overall, sentiment regarding the company's work quality is overwhelmingly positive.

Blockchain Development for Blockchain Company

5.0 Mar 31, 2023

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! Not really, all in all they did a great job!
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Web3 Design & Dev Services for Decentralized Data Network

5.0 Mar 16, 2023

By far it has been their quality and attention to detail. This is very important to us and has helped us build our brand around quality and an esteemed professionalism that our community regularly reports back to us as being standout in the Web3 field.
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2 of 2 Blockchain reviews are 5 stars

$50,000 – $199,999 avg. project cost

Blockchain PROJECT HIGHLIGHT

Blockchain Development for Blockchain Company
5.0 — A blockchain company hired TX Tomorrow Explored Oy to draft a whitepaper that memorialized their tokenomics model. Read more
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Industry Experience

TX Tomorrow Explored Oy has demonstrated expertise in the IT Services and Software industries, particularly in blockchain and Web3 technologies. Clients praise their collaborative approach, attention to detail, and ability to refine value propositions. Their strengths include effective project management and a strong understanding of tokenomics and decentralized networks. Overall sentiment is highly positive, making them a suitable choice for projects in logistics, AI, and decentralized data solutions.
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IT Services Software

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Average Project Cost Breakdown

What Clients Have Said
Clients consistently commend TX Tomorrow Explored Oy for their excellent value for money, highlighting their competitive pricing relative to the quality of work delivered. One client noted the company's 'good value for cost,' while another emphasized that their attention to detail and professionalism significantly contributed to project success, saving time and money. Overall, the sentiment surrounding the company's pricing and value proposition is highly positive, indicating satisfaction with the investment made.
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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 is a versatile IT solutions provider, offering services in IT infrastructure assessment, software and web development, mobile app development, and custom CMS solutions. Across the reviews, clients praise Oivan for their flexibility, resourcefulness, and ability to understand business needs, with approximately 90% of feedback being positive. They are noted for delivering practical recommendations and effective communication, though suggestions for improvement include enhancing local expertise and addressing initial communication hiccups.

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Reviews mention Knowledgeable
Clients have consistently praised Oivan for their knowledgeable approach, highlighting their understanding of both technical and business aspects. One client noted that Rami Korhonen, the founder, demonstrated a clear grasp of their business model, providing valuable insights beyond mere software development. The ability to align with client needs and offer sound business advice was deemed impressive, marking Oivan as a knowledgeable partner in their projects.

WordPress Dev for Performing Arts Site

4.5 Sep 26, 2017

It was critical that we be on the same page from the beginning, and they were able to provide good business advice, not just technical knowledge. Fortunately, we had a fruitful start. Based on my discussions with other IT or tech people, this is not typical. Rami understood the business side as well, which was nice.
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Industry Experience

Oivan has received positive feedback across multiple industries, including Financial Services, IT Services, Real Estate, Education, Arts & Entertainment, and Nonprofit sectors. Clients commend their expertise in IT infrastructure, software development, and user experience design. They are noted for their collaborative approach, flexibility in problem-solving, and ability to meet project requirements effectively. Overall, Oivan is seen as a reliable partner, particularly for companies seeking IT solutions, digital platforms, and user-centered applications.
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Nonprofit Financial services IT Services Arts, entertainment & music Real estate Other Industry Education

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

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Review Rating from Clients

4.4/5.0

Quality

4.5

Schedule

4.2

Cost

4.4

Willing to Refer

4.8

Helsinki-based IWA excels in diverse projects, from UX/UI design for startups to complex app development for NGOs and real estate systems. Clients praise their technical expertise, reliable project management, and ability to understand business needs, delivering impactful digital solutions across various industries.
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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

36.7/40.0

17.2/20 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

31.6/40.0

16.4/20 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

23.9/40.0

16.4/20 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 Professional

Blockchain Development for FinTech Company

Blockchain Development for FinTech Company

RedDuck is very responsive

Industry Experience

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Average Project Cost Breakdown

What Clients Have Said

Reviews mention High-quality work

Blockchain Development for Blockchain Company

Web3 Design & Dev Services for Decentralized Data Network

Blockchain Development for Blockchain Company

Industry Experience

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Average Project Cost Breakdown

What Clients Have Said

Industry Experience

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Average Project Cost Breakdown

What Clients Have Said

Reviews mention Knowledgeable

WordPress Dev for Performing Arts Site

Industry Experience

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List of the Top 4 Helsinki Blockchain Development Companies

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