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Result-Driven Process ⭐ 150+ Successful Projects ⭐

For over ten years Selleo has delivered professional services on more than 150+ software development projects for clients from Europe, the US, Canada, and Australia, designing and building a number of applications throughout a wide spectrum of business domains, industries, and technologies (Ruby on Rails, ReactJS, React Native, EmberJS, Elixir).

Extend your in-house team

  • Min project size
    $10,000+
  • Hourly rate
    $25 - $49 / hr
  • Employees
    50 - 249
  • Locations
    Bielsko-Biała, Poland
  • Year founded
    Founded 2005
  • Languages
  • Timezones

1 Language that we service

  • English

1 Timezone that we service

CET
Central European Time (CET)

2 Locations

  • Bielsko-Biała , Poland
  • Bielsko-Biała , Poland

No have been added yet...

    Pricing Snapshot

    Min. project size $10,000+
    Avg. hourly rate $25 - $49 /hr
    Rating for cost 4.5 /5

    What Clients Have Said

    Selleo provides competitive pricing with good value for cost, as noted by clients. Project costs range from $20,000 to over $500,000, depending on scope and client size. Clients appreciate Selleo's quality, communication, and project management, often highlighting their ability to deliver on time and within budget.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    $50,000 - $199,999 based on 23 reviews
    < $49,999 $50,000 - $199,999 $200,000 - $999,999 > $1,000,000

    Select a service to see pricing information

    Selleo Review Insights

    Overall Review Rating

    4.7
    • Quality 4.6
    • Schedule 4.5
    • Cost 4.5
    • Willing to Refer 4.7

    Top Mentions

    Review Highlights

    • Strong Project Management Skills

      Many clients commend Selleo for their effective project management, timely deliveries, and clear communication. They employ agile methodologies and maintain regular updates through tools like Slack and Trello, ensuring alignment and responsiveness.

    • Focus on Long-term Partnerships

      Selleo is noted for their focus on building long-term relationships with clients. Their approach to training and retaining in-house talent contributes to sustained quality and continuity in client engagements.

    • Effective Communication and Collaboration

      Selleo is recognized for their excellent communication skills and ability to integrate seamlessly with client teams. Their openness and transparency foster a collaborative and productive working environment.

    • Commitment to Client Success

      Selleo's team is praised for their dedication and proactive approach to understanding and meeting client needs. They are seen as invested partners, often going beyond scope to ensure project success and client satisfaction.

    • Room for Improvement in Estimating Procedures

      Some clients suggest that Selleo could enhance their estimating procedures and deepen their understanding of certain business markets to better support client objectives and timelines.

    • Responsive and Adaptive to Client Needs

      Clients appreciate Selleo's responsiveness and adaptability, highlighting their ability to quickly adjust to changing requirements and challenges. This flexibility is seen as a key strength in their service delivery.

    Selleo Reviews

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    Event Mgmt Platform's Web & Mobile App Dev for Software Co

    • Custom Software Development Mobile App Development UX/UI Design
    • Confidential
    • Nov. 2024 - Mar. 2025
    4.5
    Quality
    4.5
    Schedule
    4.0
    Cost
    4.0
    Willing to Refer
    4.5

    "Overall, I highly value them as a long-term partner."

    Feb 19, 2025
    Manager, Articulate Entertainment
    Anonymous
    Verified
    • Arts, entertainment & music
    • Boston, Massachusetts
    • 1-10 Employees
    • Online Review
    • Verified

    Selleo has built a live event management platform for a software company. The team has designed and developed a web app and an iOS app to streamline event scheduling and artist and venue management.

    Custom Software Development for Engineering Company

    • Custom Software Development IT Staff Augmentation Web Development
    • Confidential
    • Jan. 2024 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    4.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They are responsive to our needs, making necessary adjustments promptly to accommodate changing requirements."

    Sep 27, 2024
    Senior Machine Learning Engineer, PhysicsX
    Matthew Brennan
    Verified
    • Other industries
    • City of London, England
    • 51-200 Employees
    • Online Review
    • Verified

    A software engineering company has hired Selleo to implement a web platform. The team has integrated navigation features, secure authorization protocols for user management, and dynamic tables.

    Platform & AI Features Dev for Real Estate FinTech Company

    • AI Development Custom Software Development UX/UI Design
    • $50,000 to $199,999
    • Feb. 2024 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0
    "Selleo's communication skills, expertise, and excellent language proficiency ensure clear and effective interactions."
    Aug 7, 2024
    Co-Founder, Real Estate FinTech Company
    M K
    Verified
    • Real estate
    • United Arab Emirates
    • 1-10 Employees
    • Online Review
    • Verified

    Selleo has been hired by a real estate fintech company to develop a platform for property-related activities. The team integrates admin-verified listings, oversees agency operations, and implements AI features.

    App Development for Grey Market Detection Platform

    • Application Testing Custom Software Development UX/UI Design
    • Confidential
    • May 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "The Selleo team is a pleasure to work with."

    Aug 18, 2023
    VP Engineering, GreyScout
    Kenneth Kerrigan
    Verified
    • Other industries
    • Dublin, Ireland
    • 11-50 Employees
    • Online Review
    • Verified

    A grey market detection platform has hired Selleo for application design and development. The team is implementing new features and modern designs; key technologies include React.js and TypeScript.  

    Staff Aug, UI/UX Design & Dev Services for Learning Platform

    • Custom Software Development Graphic Design IT Staff Augmentation UX/UI Design
    • Confidential
    • July 2020 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "The team at Selleo cares about delivering good software, and it shows in all aspects of their work."

    May 25, 2023
    Director of Engineering, Qstream
    Douglas Reynolds
    Verified
    • Other industries
    • Burlington, Massachusetts
    • 51-200 Employees
    • Online Review
    • Verified

    Selleo provides staff augmentation services for a learning platform. Selleo's team supports the client with UI/UX accessibility improvements and custom development using React.js and RESTful API.

    Learning Platform Dev for Educational Services Provider

    • Application Testing Custom Software Development UX/UI Design Web Design Web Development
    • Confidential
    • June 2020 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "The team is extremely engaged and delivers a full picture of the project status, and this builds extraordinary trust."

    Apr 14, 2023
    CTO, Educational Services Provider
    Rob Eifler
    Verified
    • Education
    • Chicago, Illinois
    • 11-50 Employees
    • Online Review
    • Verified

    Selleo designed and developed a career learning platform for an educational services provider. The team integrated the new platform with the legacy platform.

    Development for Solution Provider Company

    • Web Development
    • $10,000 to $49,999
    • Oct. 2019 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their technical skills and knowledge of new technologies are impressive."

    Apr 13, 2021
    CEO, Kubed AS
    Genevieve Hart
    Verified
    • Other industries
    • Oslo, Norway
    • 1-10 Employees
    • Online Review
    • Verified

    Selleo updates a software solution provider's web application. The team also created additional features to improve the client's management process. 

    UI/UX Design & Audit for Digital Ads Distributor

    • UX/UI Design
    • $10,000 to $49,999
    • May 2020 - Ongoing
    4.5
    Quality
    4.5
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    4.5

    "I highly recommend them as a trustworthy software development partner."

    Sep 8, 2020
    CTO, Guidle AG
    Drazen Nikolic
    Verified
    • Advertising & marketing
    • Baar, Switzerland
    • 11-50 Employees
    • Online Review
    • Verified

    A digital ads distributor hired Selleo to assist in UI/UX design, auditing, and project implementation.

    App Dev for Community & Social Organization

    • Web Development
    • $50,000 to $199,999
    • Jan. 2020 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They have strong leadership, offer a good value, and they're flexible."

    Apr 29, 2020
    CEO, Better Off Social
    Chris Mitchell
    Verified
    • Arts, entertainment & music
    • New York City, New York
    • 1-10 Employees
    • Online Review
    • Verified

    Selleo developed a web app; they set up the architecture and created the solution, which involved DevOps.

    Showing 1-10 of 35 Reviews

    Clutch verification provides an additional layer of data to help you make the right purchasing decision of business services.

    Learn More
    Verified Client Reviews
    35
    Overall Review Rating
    4.7
    Source
    Clutch
    Last Updated
    December 22, 2025

    Business Entity

    Business Entity Name Selleo Labs Sp. z o.o.
    Source Central Statistical Office of Poland
    Jurisdiction of Formation Poland
    Date of Formation October 13, 2021
    Status Active
    Last Updated July 8, 2025
    ID 0000925982

    Credit Report Results

    International Credit Risk Assessment Low Risk
    Source Creditsafe
    Last Updated July 8, 2025
    Learn More About The Clutch Verification Process

    Locations (2)

    Powstańców Śląskich 3 Bielsko-BiałaPoland 43-300

    50 - 75

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