BUILD WITH US
BUILD WITH US
DEDICATED
SOFTWARE
OneApp creates custom software
and programs for start-ups and business
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THE BEST
THE BEST
BODY LEASING IT EXPERTS
We can build any team of IT experts for you.
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Services
Mobile apps
Go mobile with OneApp! Whether it's iOS or Android, smartphones or tablets or wearables, OneApp Experts will help you build the app you need, for any device you need. Contact OneApp and let's see what we can do.
  • iOS
  • Android
  • Cross-platform apps
Mobile apps
Go mobile with OneApp! Whether it's iOS or Android, smartphones or tablets or wearables, OneApp Experts will help you build the app you need, for any device you need. Contact OneApp and let's see what we can do.
  • iOS
  • Android
  • Cross-platform apps
Web apps
Back-end and front-end: our Experts cover both. OneApp developers will help you create highly functional, safe, user-friendly, great looking and very responsive apps.
  • PHP, C# .NET, Java
  • Symfony, Phalcon
  • Angular, VUE JS, React
Web apps
Back-end and front-end: our Experts cover both. OneApp developers will help you create highly functional, safe, user-friendly, great looking and very responsive apps.
  • PHP, C# .NET, Java
  • Symfony, Phalcon
  • Angular, VUE JS, React
Design
Break the mold. Take your project a level UP. OneApp delivers functionality with an amazing graphic design and a convenient interface.
  • UX design
  • App designs
  • Prototyping
Design
Break the mold. Take your project a level UP. OneApp delivers functionality with an amazing graphic design and a convenient interface.
  • UX design
  • App designs
  • Prototyping
Body Leasing
Do you need a single expert or would you prefer a ready team at your sole disposal? You can decide whether they should work with you or remotely from our office. Check our body leasing offer now.

  • Programmers, graphic, testers
  • Scrum teams for hire
  • Flexible availability
Custom development
Potrzebujesz dedykowanych rozwiązań które pomogą osiągnąć Twoje cele? Nasi eksperci przeanalizują, przedstawią możliwe warianty a na końcu zrealizują i wdrożą cały projekt.
  • PHP, .NET, C#, …
  • PHP, .NET, C#, …
  • PHP, .NET, C#, …
Product & Service Design
Looking for innovative ideas to win more customers and boost sales? OneApp Experts will get you there. See how we can help.
  • Innovative ideas
  • Projects per customer demand
  • Ready and tested prototypes
Body Leasing
Do you need a single expert or would you prefer a ready team at your sole disposal? You can decide whether they should work with you or remotely from our office. Check our body leasing offer now.
  • Programmers, graphic, testers
  • Scrum teams for hire
  • Flexible availability
Product & Service Design
Looking for innovative ideas to win more customers and boost sales? OneApp Experts will get you there. See how we can help.
  • Innovative ideas
  • Projects per customer demand
  • Ready and tested prototypes
Our core business
BANKING & FINANCE
From day one, OneApp has been delivering projects for the financial sector, including Getin Bank. OneApp's portfolio features front-end and back-end projects, UX-dedicated design deliverables, and product & service design projects.
  • Vast experience in projects for banking
  • Multi-disciplinary team of experts
  • Prioritized security and lead time
WEB APPS
OneApp boasts years of experience in web solutions, both for large-scale and complex projects (and also for the banking sector) and smaller ones. OneApp specializes in front-end, back-end, and UX design projects.
  • Years of experience
  • A tight team of experts
  • Superior quality of deliver
DESIGN / UX
It is one of OneApp's favorite services in which OneApp Experts can show their true prowess from continuous education and testing of new techniques. The OneApp Experts help deliver every design project.
  • Creativity & understating of the latest trends
  • Experienced design wizards
  • Attention to detail
BODY LEASING
Proven and increasingly popular solution for companies that need to increase IT teams. The Body Leasing service enables faster delivery of appropriate specialists and start the project.
  • The best experts
  • Lower hiring costs
  • Corporate-wide know-how
Case studies
ONEY: HEALTHY DIET ASSISTANT PLATFORM
Oney is a subsidiary of Auchan and a provider of financial and insurance services for Auchan customers. Oney has been suffering lately from a decline in sales.
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Bukovina
- Bajkovina
Building of a new business model for an amusement park based on interactive mirrors, hotel guest services technology, and an aqua park.
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Ciech
- Twoja Sarzyna
Modernizing the business model to build corporate resistance to market changes.
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References
Robert Zalewski
Co-founder of the Wood Lark Group Wood Lark Group
We've been contracting OneApp since 2016 and continue to be 100-percent satisfied with the services. The programmers dedicated to our jobs deliver the projects strictly according to our specs. We can always count on the OneAppers to tell us what can be improved. If you're shy of remote cooperation, I can assure you that the remote communication with OneApp is great and provides nothing but benefits in the long run.

We rate OneApp 10 out of 10! :)
MEET OUR TEAM
Piotr
CEO
Artur
COO
Sylwia
HR Manager
Kamil
Creative Director
Maciej
Code Master
Rafał
Code Master
Albert
Code Master
Sebastian
Code Master
Dariusz
UI/UX Ninja
Łukasz
Code Master
Jarek
Code Master
Michał
Code Master
Magda
Guru Tester
Marcin
Guru Tester
Ania
Genius Analyst
Piotrek
Code Master
Warsaw
ul. Pory 59, 02-757
Warsaw
ul. Wałbrzyska 11, 02-739
Warsaw
ul. Marszałkowska 126/134, 00-008
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