Top Blockchain Companies & Developers in Helsinki

Ratings Updated: June 17, 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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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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Industry Experience

Nextrope demonstrates strong expertise across various industries, including real estate, business services, financial services, and education. Clients commend their agility, proactive communication, and ability to deliver high-quality, innovative solutions tailored to specific needs. In real estate, they excelled in developing blockchain-based platforms, while in financial services, they contributed to tokenization and secure transaction systems. Overall, feedback highlights Nextrope's reliability and commitment, making them a suitable choice for companies seeking technology solutions in these sectors.
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Business services IT Services Financial services Education Engineering Retail Information technology Media Real estate Manufacturing

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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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Poland (11) United Arab Emirates (2) Estonia (1) Norway (1) England (1)

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RedDuck

5.0 13 reviews

$5,000+

$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 Proactive
Clients have consistently praised RedDuck for their proactive approach, noting their effective communication through daily stand-ups and timely deliveries. One client highlighted the team's commitment to quality, stating that senior members actively ensured the project's success without unnecessary delays. Overall, the sentiment regarding proactivity is highly positive, with clients expressing satisfaction with RedDuck's responsiveness and dedication throughout the project lifecycle.

Platform Development for Financial Services Company

5.0 Jul 31, 2023

RedDuck has been very productive in their time management and has always delivered on time. They have been very proactive in communication with daily stand-ups and managers holding the junior devs responsible for the delivery timeline promised. The senior guys Mark & Dmytro really show care about the quality of the work their team delivers and step in as and when required. What is also very refreshing to see that the team delivered without fuss and unnecessary delays.
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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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Industry Experience

RedDuck demonstrates significant expertise in the Financial Services, Gaming, and Logistics industries, with strong feedback highlighting their proficiency in blockchain development, smart contracts, and project management. Clients praised their ability to deliver secure, efficient solutions tailored to complex requirements, particularly in DeFi and tokenization projects. Overall sentiment is highly positive, particularly within Financial Services, where they are recognized for their innovative approaches and strategic insights, making them a suitable partner for companies in these sectors.
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Financial services Other Industry Logistics & Supply Chain Gaming

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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 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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Reviews mention Unique expertise
Clients consistently praised Altoros for their unique expertise and the quality of their specialists. One client noted the 'quality and expertise of software development staff' as impressive, while another emphasized their ability to provide specialists that precisely meet project requirements. Overall, the sentiment reflects a strong appreciation for Altoros' capability to deliver high-caliber professionals, with clients highlighting their flexibility and client-oriented approach as key strengths.

Staff Augmentation for Software Dev Company

5.0 May 14, 2023

The quality and expertise of software development staff at Altoros was particularly impressive. This was a staff augmentation model, and so Altoros team was managed by us. The deliverables were generally met on time with high quality.
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SaaS Portal Design for Data Analytics Company

5.0 Apr 11, 2022

We were impressed by the subject-matter skills and creativity provided by Altoros with their UX consultant. We would recommend him to any customer. Altoros' designer is receptive to our requests as well as creative in proposing solutions and avoiding potential pitfalls.
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Product Deployment for Digitalized Commodity Company

5.0 Mar 25, 2021

Altoros seem to be very good at providing specialists who really meet our requirements. This is a rather rare vendor quality based on my experience. If you ask them for certain specialists, they understand what qualities the specialist needs to have.
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Mobile App Dev for Weather Monitoring Device Co

4.5 Oct 18, 2019

What’s noteworthy is that they've really experienced developers. We’ve actually chosen to work with the highest quality developers even though we pay them a higher rate. Their team’s efforts have been worthwhile.
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Retirement Plan Tool Development for Financial Services Co

5.0 Oct 10, 2019

Altoros took it upon themselves to research parallel computing capabilities, multiple processors, and timing so that the tool will be able to meet our client’s needs and our requirements. Their ability to analyze problems quickly is impressive.
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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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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 praise Altoros for their high-quality SaaS and mobile app solutions, emphasizing their agile development process and proactive communication. Their team efficiently managed complex projects, ensuring timely delivery and innovative features, making them a reliable partner for tech-driven initiatives.
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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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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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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 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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Industry Experience

Oivan has demonstrated extensive expertise across diverse industries including Financial Services, Real Estate, Education, and Arts & Entertainment. Clients commend their ability to deliver tailored IT infrastructure solutions in Financial Services, effective project management in Real Estate, and user-friendly app development in Education and Arts sectors. Overall sentiment reflects a strong capability in understanding client needs, providing innovative solutions, and maintaining collaborative communication, positioning them as a suitable partner for companies in these fields.
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Financial services IT Services Arts, entertainment & music Real estate Education 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
Client feedback indicates that the company's pricing is generally perceived as fair and offers good value for money. One client noted, 'the budgeting was spot on' and felt they received 'good value' for their investment. Another client highlighted a 'very good deal' for a project costing around $6,000. Overall, clients appreciated the quality of work relative to costs, often mentioning the effective communication and flexibility of the team as key strengths that enhanced the overall value.
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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 demonstrates strong expertise in software development, UI design, and system architecture. Clients highlight their collaborative style, timely delivery, and capacity to adapt to evolving project requirements, producing high-quality digital products for sectors such as real estate, finance, and social support.
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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

Blockchain Platform Dev for Real Estate Investment Platform

Industry Experience

Select Industry to see insights

Nextrope is very responsive

Reviews mention Proactive

Platform Development for Financial Services Company

Blockchain Development for FinTech Company

Industry Experience

Select Industry to see insights

RedDuck is very responsive

Reviews mention Unique expertise

Staff Augmentation for Software Dev Company

SaaS Portal Design for Data Analytics Company

Product Deployment for Digitalized Commodity Company

Mobile App Dev for Weather Monitoring Device Co

Retirement Plan Tool Development for Financial Services Co

Blockchain Development for Blockchain Company

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

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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