Meet people behind Collaboration
Software Development

I am a full-stack software developer creating effective and efficient technical solutions. I write clean, maintainable, cohesive code using EmberJS and ReactJS, eagerly taking up back-end challenges in Ruby on Rails. I took part in several international projects where I had an opportunity to develop products and features that improved my clients’ lives. I am passionate and enthusiastic about emerging technologies and continues to develop my programming skills.
Marzena Orawczak
Mateusz Dobija
Mateusz Skrobiś
Robert Harężlak
Adam Woźny
Bernadetta Fryczkowska
Dawid Damek

We are Fast & Curious inspiring others to reach for more.

We believe that our success is equivalent to the client's business success, which is why we encourage them to implement best practices and find satisfaction in finding new solutions that allow for better product fit to the market. What connects us is continuous development, motivation to act, and a willingness to take on new challenges.

Engaging People

Engaging People

We believe in collaborative leadership, and trust-based relationships encouraging people to take risks and follow their ideas.

Assuring Success

Assuring Success

We proactively engage with clients by assessing users’ needs, gathering feedback and monitoring competitors to ensure competitive advantage.

Fostering Communication

Fostering Communication

We lead by example actively communicating our concerns, obstacles and successes.

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## We tackle challenges with a** well-communicated plan** and buy-in from all team members.
Client and Team Lead

We tackle challenges with a well-communicated plan and buy-in from all team members.

We believe that continuous change is the path to development, and assume that everything is possible if it helps us achieve our sprint goal.

Robert Harężlak
Robert Harężlak
Client and Team Lead
Avarage seniority
Retention Rate
Service quality
OUR EXPERTISEHow we helped clients grow their businesses

Project #1 Orchestrating work around SAP implementation

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Piet, a founder of the 9teams, needed a team to design and develop the entire SaaS platform. After an online selection, based on predefined criteria he decided to choose Selleo. We were responsible for app architecture, choosing the right technology stack (EmberJS, Elixir), UX design and SaaS development.

Project #2 Automating operations for $1+ bn. bookings prepared on web platform

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Being referred to Selleo by one of our business partners, Nate wanted to create a web and mobile app. Our developers became part of his team, performing a variety of development work. We adjusted to software development processes used by the internal team and discussed together design, code performance & quality.

Project #3 Synchronizing teams to increase productivity and accountability

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With the need to grow users base and implement feedback from the current users, Samewave wanted to extend its existing mobile-based platform and develop the web version of its business management software. They looked for experienced software developers with solid industry knowledge.

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Awards & Certificates

reviewed on
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  • Top 1000 Companies Global 2021
  • Top Development Company Poland 2021
HR dream team
  • 2020 HR Dream Team Award
  • 2016 Employer Branding Featured
  • 2015 HR Dream Team Award
ISO CertificateISO CertificateAWS Certificate
  • Information Security Management System compliant with PN-EN ISO/IEC 27001
  • Business Continuity Management compliant with ISO 22301
  • AWS Certified Solutions Architect - Associate