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Home Software Developers Kotlin Finland Helsinki

Top Kotlin Developers in Helsinki

Ratings Updated: April 3, 2026
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4 Leaders 1 Contenders

5 Companies

Country: Finland
City: Helsinki
Programming & Scripting: Kotlin

List of the Top Helsinki Kotlin Development Services

  • Halo Lab Logotype

    4.9 94 reviews
    Premier Verified
    $10,000+
    $25 - $49 / hr
    50 - 249
    Espoo, Finland

    Services provided

    10% Custom Software Development
    10% Application Management & Support
    10% Branding +7
    10% Graphic Design
    10% IT Staff Augmentation
    10% Low/No Code Development
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design
    10% Web Development

    Focus Areas

    10% Kotlin
    10% Ember.js
    10% HTML5 +7
    10% JavaScript
    10% Redux
    10% Ruby
    10% SQL
    10% Typescript
    10% backbone.js
    10% jquery

    Halo Lab is a Custom Software Development company that excels in tailored software solutions, offering services such as UI/UX design, frontend and backend development, and branding. Their reviews reflect outstanding project management and communication skills, with 100% of reviewers praising their responsiveness and professionalism. Clients consistently highlight Halo Lab's ability to deliver quality results promptly and their commitment to exceeding project milestones.

    See all 94 projects
    7 of 7 reviews are 5 stars
    $10,000 – $49,000 avg. project cost

    Reviewed 7 times in the past 6 months

    In the past six months, client feedback for Halo Lab has been overwhelmingly positive, highlighting their effective project management and high-quality deliverables. Clients like the CEO of Speedy Sticks praised their ability to translate complex services into a cohesive website experience. Similarly, the Digital Transformation Lead at Stay commended their attention to detail in user flows. Overall, clients noted responsiveness, timely delivery, and strong brand alignment as key strengths, with no significant areas for improvement identified.
    Read 7 Recent Reviews
    5 of 5 Custom Software Development reviews are 5 stars
    $50,000 – $199,999 avg. project cost

    Custom Software Development PROJECT HIGHLIGHT

    UI/UX Design & Mobile App Dev for Wellness App Co

    5.0 — Halo Lab provides UI/UX design and mobile app development services for a wellness app company. The team is tasked with creating custom UI/UX designs per the client's requirements. Read more
    Read 5 Reviews

    View projects from:

    United States (40) Canada (7) England (5) Australia (4) Germany (3) Sweden (2) Ireland (2) Taiwan (1) Netherlands (1) India (1) Finland (1) Japan (1) South Korea (1) Morocco (1) France (1) Portugal (1) Singapore (1) China (1) Switzerland (1) North Macedonia (1) Bulgaria (1) Austria (1)

    This provider is fluent in 3 languages:

    • English
    • Russian
    • Ukrainian

    This provider is available in 4 time zones:

    • Gulf Standard Time (GST)
    • Central European Time (CET)
    • Eastern European Time (EET)
    • Eastern Standard Time (EST)

    Espoo, Finland

    4 Komentajankatu
    Espoo, Finland 02600

    1

    +358456308713

    See All Locations (27)
    View Profile Visit Website
  • Siili Solutions Logotype

    4.9 7 reviews
    $50,000+
    $50 - $99 / hr
    250 - 999
    Helsinki, Finland

    Services provided

    15% Custom Software Development
    25% Web Development
    15% AI Consulting +3
    15% AI Development
    15% IT Staff Augmentation
    15% UX/UI Design

    Focus Areas

    10% Kotlin
    10% ASP.NET
    10% C# +7
    10% Java
    10% JavaScript
    10% Other programming & scripting languages
    10% Python
    10% SQL
    10% Swift
    10% Typescript

    Siili Solutions is a distinguished provider of custom software development services, specializing in tailored and full-stack software development. The company has received overwhelmingly positive feedback, with clients highlighting their excellent project management, deep domain expertise, and proactive collaboration. Approximately 90% of reviewers emphasize Siili Solutions' ability to deliver high-quality, cost-effective solutions and their seamless integration with client teams.

    See all 7 projects
    2 of 2 reviews are 5 stars
    2 new reviews for Custom Software Development services
    Unknown avg. project cost

    Reviewed 2 times in the past 6 months

    Recent client feedback for Siili Solutions reflects a strong overall sentiment, highlighting their effective communication and professionalism. A COO noted the successful delivery of a middleware API project, praising the developer's responsibility and client care. Meanwhile, a product owner from KONE Corporation commended their full-stack application development, emphasizing the positive impact on digitalization and service adoption. Both clients reported no areas for improvement, reinforcing Siili Solutions' value and alignment with client goals.
    Read 2 Recent Reviews

    Industry Experience

    Siili Solutions has demonstrated expertise across various industries, including Hospitality & Leisure, Supply Chain and Logistics, Manufacturing, and Automotive. Feedback highlights strengths in project management, effective communication, and a commitment to delivering high-quality solutions. Clients have praised their ability to enhance operational efficiency, develop digital services, and provide value-driven support. Overall sentiment is highly positive, making Siili Solutions a strong candidate for projects within these sectors.

    Read All Reviews

    Select Industry to see insights

    Hospitality & leisure Supply Chain, Logistics, and Transport Software IT Services Manufacturing

    Average Project Cost Breakdown

    What Clients Have Said

    The feedback regarding Siili Solutions' cost and value for money is predominantly positive. Clients frequently noted that Siili provided excellent value relative to their pricing, with one stating they chose Siili due to their 'good value for cost' and another highlighting that their 'pricing fit our budget.' Overall, clients appreciated the quality of service and expertise provided, indicating that the cost was justified by the successful outcomes and effective project management.
    Read All Reviews

    More responsive than most other service providers

    Siili Solutions is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
    Get in Touch
    View Profile
  • Wunderdog Logotype

    4.5 2 reviews
    $10,000+
    $100 - $149 / hr
    50 - 249
    Helsinki, Finland

    Services provided

    25% Custom Software Development
    20% IT Strategy Consulting
    20% Web Development +7
    10% IT Staff Augmentation
    10% UX/UI Design
    5% E-Commerce Development
    5% Mobile App Development
    2% Enterprise App Modernization
    2% Other Application Development
    1% Application Testing

    Focus Areas

    10% Kotlin
    10% Ember.js
    10% Java +7
    10% JavaScript
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% Swift
    10% Typescript
    10% UnrealScript

    Wunderdog is a custom software development company known for its tailored solutions and expertise in software engineering. The reviews highlight their ability to provide well-fitting solutions, with 100% positive feedback emphasizing their impact in accelerating project timelines and effectively addressing staffing challenges in specialized roles. Their approach is characterized by seamless integration and strong team collaboration.

    See all 2 projects

    Reviews mention Professional

    Wunderdog received positive feedback regarding their professionalism, particularly in communication and project management. A client noted the impressive arrangement of regular meetings with a delivery manager who actively sought feedback throughout the project. The interim CTO provided valuable support during a critical period, allowing ongoing development to proceed smoothly. Overall, the sentiment reflects a high level of satisfaction with Wunderdog's professional approach and responsiveness.
    • Staff Augmentation for Event Venue & Service Company
      4.5 Aug 17, 2022

      I was impressed by the way they arranged regular meetings. It is with a delivery manager who would ask continuous feedback about the project.

      Read Full Review
    Read All Reviews
    0 of 1 Custom Software Development reviews are 5 stars
    $50,000 – $199,999 avg. project cost

    Custom Software Development PROJECT HIGHLIGHT

    Staff Augmentation for News & Discovery Platform

    4.5 — Wunderdog augmented the in-house AI team of a news and discovery platform. They helped develop and implement key features for the client's app. Read more
    Read 1 Review

    Average Project Cost Breakdown

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

    What Clients Have Said

    Clients generally perceive Wunderdog as providing good value for money, noting their ability to deliver skilled professionals promptly. One client highlighted their satisfaction with a developer who helped expedite project timelines, emphasizing that the right talent was available when needed. Another client appreciated the company's effective communication and ongoing support, which contributed to seamless project management. Overall, the sentiment reflects a positive view of cost-effectiveness and the quality of service provided.
    Read All Reviews

    Review Rating from Clients

    4.5/5.0

    Quality

    4.5

    Schedule

    5.0

    Cost

    4.0

    Willing to Refer

    4.5

    In Helsinki, Wunderdog is recognized for delivering skilled development support, including interim CTO services for large platforms. Clients value their consistent communication, project management, and ability to maintain development momentum without predefined deliverables.
    Read Local Reviews
    View Profile

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  • Emphasoft Nordic Logotype

    4.8 2 reviews
    $10,000+
    $50 - $99 / hr
    50 - 249
    Espoo, Finland

    Services provided

    90% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    20% Kotlin
    50% Python
    30% Swift

    Emphasoft Nordic offers bespoke software development, with a focus on tailored software solutions including backend platforms and native applications. Reviews consistently highlight their ability to meet tight deadlines, excellent communication, and strong partnership values. Clients appreciate their expertise and integration into the team, deeming them a valuable asset for custom software development projects.

    See all 2 projects

    Industry Experience

    Emphasoft Nordic has demonstrated expertise primarily within the Information Technology sector, particularly in developing consumer software focused on internet privacy and productivity. Feedback highlights their strengths in delivering high-quality front-end applications and backend services, with a commitment to timely project completion and effective communication. Overall, clients express satisfaction with their collaborative approach and value, suggesting that they are well-suited for technology-driven projects emphasizing user privacy and data management.

    Read All Reviews

    Select Industry to see insights

    Information technology

    Average Project Cost Breakdown

    What Clients Have Said

    Clients have praised Emphasoft Nordic for providing high-quality work at a reasonable cost, highlighting the company's good value for money. One review specifically noted the 'good value for cost' in their decision to hire Emphasoft Nordic. Additionally, while overall sentiment is positive regarding pricing, a suggestion for improvement was made regarding more flexible pricing options, indicating that while clients are satisfied, they see potential for further enhancement in this area.
    Read All Reviews
    View Profile
  • Unikie Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    250 - 999
    Helsinki, Finland

    Services provided

    20% Custom Software Development
    20% Web Development
    15% Cybersecurity +4
    15% Mobile App Development
    10% AI Development
    10% Cloud Consulting & SI
    10% UX/UI Design

    Focus Areas

    10% Kotlin
    10% C
    10% C# +7
    10% C++
    10% Java
    10% JavaScript
    10% Objective C
    10% PHP
    10% Python
    10% Swift

    Founded in 2015, Unikie, a midsize software development company, is located in München, Germany and Tampere, Finland. Their services include Custom Software Development and Web Development.

    Read more

    Helsinki, Finland

    Itämerenkatu 1, 3rd floor
    Helsinki, Finland 00180

    41 - 49

    See All Locations (12)
    View Profile

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1 Siili Solutions
2 Wunderdog
3 Emphasoft Nordic
4 Halo Lab

List of the Top 4 Helsinki Kotlin Development Services

  1. Siili Solutions Logotype

    Siili Solutions

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

    Ability to deliver

    30/40.0
    18.6/20 Reviews
    5.6/10 Clients & Experience
    5.8/10 Market Presence

    Service focus

    15% Custom Software Development
    10% Kotlin
    25% Web Development
    60% Other
    View Profile Visit Website
  2. Wunderdog Logotype

    Wunderdog

    $10,000+
    $100 - $149 / hr
    50 - 249
    Helsinki, Finland

    Ability to deliver

    22.8/40.0
    14.6/20 Reviews
    2.7/10 Clients & Experience
    5.5/10 Market Presence

    Service focus

    25% Custom Software Development
    10% Kotlin
    20% Web Development
    5% Mobile App Development
    2% Enterprise App Modernization
    48% Other
    View Profile Visit Website
  3. Emphasoft Nordic Logotype

    Emphasoft Nordic

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

    Ability to deliver

    18.8/40.0
    14.8/20 Reviews
    0/10 Clients & Experience
    4/10 Market Presence

    Service focus

    90% Custom Software Development
    20% Kotlin
    10% Other
    View Profile Visit Website
  4. Halo Lab Logotype

    Halo Lab

    $10,000+
    $25 - $49 / hr
    50 - 249
    Espoo, Finland

    Ability to deliver

    39.3/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    10% Custom Software Development
    10% Kotlin
    10% Web Development
    10% Mobile App Development
    10% Application Management & Support
    60% Other
    View Profile Visit Website
  5. Unikie Logotype

    Unikie

    Undisclosed
    Undisclosed
    250 - 999
    Helsinki, Finland

    Ability to deliver

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

    Service focus

    20% Custom Software Development
    10% Kotlin
    20% Web Development
    15% Mobile App Development
    45% Other
    View Profile Visit Website

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