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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

    • 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.

    • 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.

    • High-Quality Technical Output

      Clients frequently highlight the high quality of Selleo’s technical work, noting their ability to deliver reliable, maintainable, and well-tested code. Their proficiency in technologies like Ruby on Rails, React.js, and Python is particularly noted.

    • 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.

    • 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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    Project cost

    Software and Web Development for Employment Platform

    • Custom Software Development
    • $200,000 to $999,999
    • Dec. 2016 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    “We’re really happy to give them free rein to follow their instincts when solving things.”

    Jan 15, 2018
    CTO, Studentvikarie
    Henrik Lindberg
    Verified
    • Education
    • Goeteborg, Sweden
    • 51-200 Employees
    • Phone Interview
    • Verified

    Selleo worked on the development of a web application, building the platform’s second version from scratch. The work used Ruby on Rails and React for the frontend, as well as HTML, CSS, and JavaScript.

    Mobile App Development for Greeting Card Company

    • Mobile App Development
    • $10,000 to $49,999
    • May 2017 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    “They have a great deal of empathy for what we’re trying to accomplish and for a startup, that’s important.”

    Dec 7, 2017
    CEO, Documobi
    Peter Lancaster
    Verified
    • Other industries
    • Harrogate, England
    • 1-10 Employees
    • Phone Interview
    • Verified

    Selleo developed an iOS and Android mobile app using Apache Cordova. They used an existing backend infrastructure using Ruby on Rails, and offered additional security for the app's use in financial services.

    Web App for Health Services Company

    • Web Development
    • Confidential
    • Dec. 2015 - June 2017
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    “I’ve been quite impressed with Selleo’s work — they built a beautiful product with outstanding code.”

    Jun 30, 2017
    Senior Software Engineer, Hospital & Healthcare Company
    Anonymous
    Verified
    • Other industries
    • New Jersey, United States
    • 201-500 Employees
    • Phone Interview
    • Verified

    Selleo is developing a communication app that allows doctors to collaborate on cardiovascular cases while following HIPAA standards. The team continues to test and optimize the app, except for the iOS version.

    Rails Development for Payment Solutions Company

    • Web Development
    • $10,000 to $49,999
    • Dec. 2016 - Ongoing
    5.0
    Quality
    4.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "I was very impressed with the quality of the frontend work they did, their professionalism, and their organization."

    Jun 30, 2017
    CTO, Payment Card Solutions
    Rob Anderson
    Verified
    • Financial services
    • London, England
    • 1-10 Employees
    • Phone Interview
    • Verified

    Selleo helped maintain a large code base, and helped build new systems on Ruby on Rails. They incorporated HTML, improved security and reliability, and also contributed some frontend and graphic design work.

    e-Commerce Development for Online Apparel Company

    • E-Commerce Development
    • $200,000 to $999,999
    • Sep. 2016 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    5.0

    "Selleo has certainly contributed to our recognition as a market leader."

    Jun 29, 2017
    COO, SquadLocker
    Keith Roberts
    Verified
    • Retail
    • Warwick, Rhode Island
    • 11-50 Employees
    • Phone Interview
    • Verified

    Selleo provides full-stack development for a sports gear e-commerce platform, customizing store-building, promotional, and purchasing functionalities to ensure an efficient UX/UI in an expanding partnership.

    Web Development for Real Estate Company

    • Web Development
    • $50,000 to $199,999
    • Aug. 2016 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.5
    Willing to Refer
    5.0

    "They’ve been very receptive to using our tools and offer valuable opinions."

    Jun 27, 2017
    CTO, Private Equity Real Estate Firm
    Mike Miklavic
    Verified
    • Real estate
    • Boston, Massachusetts
    • 11-50 Employees
    • Phone Interview
    • Verified

    Selleo conducts full-stack Ruby on Rails development across multiple web applications, streamlining real estate data and creating internal/public-facing platforms to support investment strategies. 

    Development for SaaS Learning Platform

    • Web Development
    • $50,000 to $199,999
    • Jan. - Dec. 2016
    5.0
    Quality
    4.5
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They delivered to the highest level of quality."

    Jun 7, 2017
    Founder, SaaS Learning Platform
    Anonymous
    Verified
    • Other industries
    • New York City, New York
    • 11-50 Employees
    • Phone Interview
    • Verified

    Selleo developed web app features on multiple platforms to support content management and e-learning design, providing 3–5 engineering resources to augment the internal team.

    Custom Development for e-Learning Company

    • Custom Software Development
    • Confidential
    4.5
    Quality
    5.0
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    5.0

    "What sets Selleo apart is the enthusiasm and care taken on the project beyond scope."

    Jun 4, 2017
    CEO, Neutopia
    Jamie Engel
    Verified
    • Education
    • Sydney, Australia
    • 1-10 Employees
    • Online Review
    • Verified

    Selleo provided frontend and backend development, as well as design and technical support, for an engaging e-learning software project. Additional features include playlists and Pinterest-esque posting.

    Conference Management Platform for Training Company

    • Web Development
    • $10,000 to $49,999
    • Feb. 2014 - Mar. 2015
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "[W]ith Selleo’s professional approach, the work was easy and even enjoyable."

    May 23, 2017
    Vice Chairman of Advisory Board, Training Company
    Anonymous
    Verified
    • Other industries
    • Warsaw, Poland
    • 1-10 Employees
    • Online Review
    • Verified

    Selleo developed an event-focused web CMS solution with corresponding mobile apps (iOS, Android, and Windows Phone), incorporating user behavior analytics and feedback features to boost participation.

    Web App Development for Business Services Company

    • Web Development
    • Confidential
    • June 2025 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their capacity to understand our business needs and convert those into developments is impressive."

    Dec 22, 2025
    Co-Founder, Business Services Company
    Anonymous
    Verified
    • Business services
    • Luxembourg
    • 1-10 Employees
    • Online Review
    • Verified

    Selleo has developed a web app for a business services company. The team has built the platform from scratch, implementing custom features and conducting testing and deployment support.

    Showing 21-30 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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