Top Blockchain Companies & Developers in Helsinki

Ratings Updated: October 18, 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 Exceeds expectations
Nextrope consistently exceeds client expectations, as highlighted by their thorough analysis and high-quality deliverables. One client noted the impressive standard of their consultancy materials, comparable to top firms, which instilled confidence in internal decision-making. Another client praised the seamless integration of front-end and back-end development, with timely delivery and proactive communication. Overall, clients expressed high satisfaction with Nextrope's professionalism and commitment to meeting and surpassing project goals.

Business Dev Consultancy for Construction Services Startup

5.0 May 27, 2022

Nextrope conducted a very thorough analysis of business cases and problems we brought to them and delivered a detailed workshop, together with MBB-style business consultancy deck. Everything was delivered on time and the final result exceeded our expectations.
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Tokenization Platform for IT Service Provider

5.0 Mar 17, 2022

In addition to a visually appealing interface, their front-end and back-end development were perfectly integrated. The platform was delivered on time and the final result exceeded our expectations.
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Digital marketing for 3D Printing Recycling Company

5.0 Sep 12, 2020

The scope of service offered to clients, both in terms of business and financial sides, as well as the actual web development. As so-far the only project in material sciences as a core of our activity that Nextrope supported, we had doubts that they would be able to give us a tailored solution. However, they proved to be very competent and delivered materials that met our expectations, and even exceeded some of them.
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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 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.
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Information technology Financial services IT Services Education Engineering Retail Media Business services 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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RedDuck

5.0 17 reviews

Verified Clutch Guarantee

$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.

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8 of 8 Blockchain reviews are 5 stars

3 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 has demonstrated notable expertise across various industries, including Manufacturing, Information Technology, Telecommunications, Financial Services, and Gaming. Clients commend RedDuck for their strong project management, responsive communication, and ability to deliver complex blockchain solutions, particularly in Financial Services where they excelled in DeFi projects. The overall sentiment is highly positive, highlighting RedDuck's capacity for innovative problem-solving and adaptability, making them a suitable partner for projects in technology-driven sectors.
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Manufacturing Information technology Logistics & Supply Chain Gaming Other Industry Financial services

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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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$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.
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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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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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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 software development, with a focus on efficient workflows and open communication. Clients value their ability to adapt and find cost-effective, innovative solutions for complex 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 Collaborative
Clients have consistently praised TX Tomorrow Explored Oy for their collaborative approach, highlighting their ability to work closely with teams and maintain open communication. One client noted that they are 'a great team, very collaborative, and detail oriented,' emphasizing the effectiveness of their co-design workshops and strategy sessions. Overall, the sentiment reflects a strong appreciation for the company's teamwork and responsiveness to client needs.

Value Proposition & Design Workshops for Data AI Platform

5.0 Mar 28, 2023

They're a great team, very collaborative, and detail oriented.
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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 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 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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Other industries Financial services Arts, entertainment & music Real estate Education

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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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Review Rating from Clients

4.4/5.0

Quality

4.5

Schedule

4.2

Cost

4.4

Willing to Refer

4.8

Helsinki-based clients praise IWA for their expertise across diverse projects, including app development, UI design, and complex software solutions. They highlight the company's ability to understand business needs quickly, deliver high-quality work on schedule, and maintain strong collaboration and communication.
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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

31.4/40.0

16.2/20 Reviews

10/10 Clients & Experience

5.2/10 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

22.1/40.0

14.6/20 Reviews

3.6/10 Clients & Experience

3.9/10 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 Exceeds expectations

Business Dev Consultancy for Construction Services Startup

Tokenization Platform for IT Service Provider

Digital marketing for 3D Printing Recycling Company

Blockchain Platform Dev for Real Estate Investment Platform

Industry Experience

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Nextrope is very responsive

Blockchain Development for FinTech Company

Industry Experience

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RedDuck is very responsive

Software Development (Ethereum/EVM)

Industry Experience

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Reviews mention Collaborative

Value Proposition & Design Workshops for Data AI Platform

Web3 Design & Dev Services for Decentralized Data Network

Industry Experience

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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

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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