Overview

About Selleo Labs

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, Elixir, NodeJS, ReactJS, React Native, EmberJS).

Extend your in-house team

Whenever you want to handle a new project, deliver essential features or need a staff with specialized skills or industry expertise, our full-stack developers help you to increase overall productivity. We work in collocated agile teams crafting web and mobile applications with an entrepreneurial sense of ownership.

Embrace tech stack complexity

Our expert developers have not only the current capabilities you need but also the ability to build new ones rapidly. With the vast diversity of skills required and partnership with other specialized companies, we can deliver even the most technologically challenging software solutions.

Industry Expertise

Through the years we have gathered a broad spectrum of specialization in the development of custom SaaS and cloud-based business process management tools, digital dashboards, LMS and e-learning services, AdTech and marketing platforms, data analytics and processing solutions. We enable clients to efficiently optimize and innovate processes, products, and business ventures by developing single-page applications, designing microservices architecture and crafting web and mobile applications.

What clients say

Review Analytics of Selleo Labs

Every review is verified through Goodfirms before it's published.

4.918 Verified Reviews
Quality4.8
Schedule & Timing4.9
Communication4.9
Overall4.9
Review Summary
Summarized from 18 verified reviews · Updated August 2026
Clients consistently praise Selleo Labs for strong technical execution, reliable communication, and collaborative partnership. The team is noted for delivering high-quality code, meeting project timelines, and remaining responsive to feedback and change requests. Reviewers highlight transparency, trustworthiness, and genuine investment in project success across web development and design work.
✦ AI-generated summary. May not reflect every review.
Detailed Reviews of Selleo Labs
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What reviewers mention most

Rob Anderson
Rob Anderson, CTO and co-founder at B4B PaymentsVerified Review
Posted on Dec 18, 2019

We recommend the Selleo team

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software Development

We have worked with Selleo's development team for the past three years. They have been consistently diligent and reliable, and they have produced high quality code for us. We have no hesitation in recommending them to other companies looking to outsource some or all of their development work.

Kristoffer Persson
Kristoffer Persson, Founder at HumlyVerified Review
Posted on Nov 29, 2019

Selleo is a perfect tech partner!

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Mobile App DevelopmentSoftware DevelopmentDevOps

We have worked with Selleo for several years and can highly recommend them as a software development partner. Time to time we need to find good, near shore developers to help us build our platform. The team works hard, writing good code and completing all work punctually and to a high standard. They are able to work on their own initiative and take responsibility for their tasks. Selleo has been a team that has proven they're dedicated to completing innovative projects and offering useful direction for our software.

Jamie Engel
Jamie Engel, Founder & CEO at NeutopiaVerified Review
Posted on Nov 18, 2019

Excellent Service

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software Development

I began working with Selleo in 2014 and have continued through to the present. Selleo excelled at the interpersonal parts of software design as well as the technical elements. They used daily communication to keep the project in check. They build to a very high standard of quality. Their company culture clearly nurtured an energetic and informal working environment. What sets Selleo apart is the enthusiasm and care taken on the project beyond scope. We have a spirit on the team that’s definitely in the culture at Selleo, very similar to the type of culture I try to foster as a teacher. I look forward to our meetings, it’s always fun as well as productive. The guys are really into the project and I know they really care about its success. I believe Selleo chooses very good people and has an excellent company culture. I’m very happy to be working with a company that shares my values and that has made the whole experience work very well.

Focus

Service Focus of Selleo Labs

How the team's effort is distributed across services.

25%25%20%20%10%

Industries Focus

20%10%10%10%10%10%10%10%

Client Focus

Small Business50%
Medium Business50%
Selected Work

Client Portfolio of Selleo Labs

Where their work concentrates - by industry, budget, and timeline.

Project Industry

Education25%
Gaming4%
Hospitality4%
Fintech4%
Advertising & Marketing4%
Legal & Compliance4%
Healthcare4%
Productivity7%
Other7%
Entertainment4%
Retail4%
Business Services11%
Nonprofit4%
Utilities4%
Travel4%
Other Industries7%
Food & Beverage4%
Major industry focus
Education

Project Cost

$50001 to $10000075%
Not Disclosed25%
Common project cost
$50001 to $100000

Project Timeline

Ongoing18%
1 to 25 Weeks43%
26 to 50 Weeks32%
51 to 100 Weeks7%
Typical timeline
1 to 25 Weeks

Portfolios: 28

Where we are

Locations (1)

Offices where Selleo Labs operates.

Headquarter
Poland

Poland

Powstancow Slaskich 3
Bielsko-Biala, Silesian Voivodeship 43-300