One source

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One Source - The efficient solution

Cover all of your needs by hiring a single specialist team from Once Source.
Our knowledge and deep expertise in Edtech along with our proven successful methodologies make creating products from scratch much quicker. We can verify product ideas and implement the desired functions in next to no time.
ENJOY OUR TEAM

PRODUCTS

4500
+

worldwide clients

2000

years of experience

110

engineers

1000
+

Our plans for future

Growing our teams and expanding expertise

We are looking to add extra professionals to our staff to provide bigger teams for larger projects.

Increasing number of key long-term accounts

Building relationships and partnerships that last, helping small clients grow into larger-scale businesses through long-term support.

Enhancing expertise in VR & AR and cloud computing

We are focused on the future of product development and know VR, AR and cloud computing will play a large part in what is to come so we are expanding upon our skills in these areas.

We’re interested in forming partnerships with

Agencies (business or marketing)

Other software development companies on the market

You’re in safe hands

Leonid Yastremskiy

Co-Founder, CEO

Serhiy Nikolskiy

Co-Founder, COO

Edvard Lazorskiy

Head of Business Analysis

Igor Fomenko

Head of Marketing

Dmitriy Andriukov

Head of Sales

Yuliy Shcherbak

Seniour Backend Developer

Our office

Kyiv

  • Mon - Fri: 10am - 18pm
  • 41, Mashynobudivna
    Kyiv, Ukraine

Vilnius

  • Mon - Fri: 10am - 18pm
  • Headquarters Treniotos g. 2-12
    Vilnius, Republic of Lithuania

See what our clients have to say

“While the development process, GNS IT specialists demonstrated high level of proficiency, strong expertise and good quality of service. We had ongoing communication process, and got all our wishes and needs implemented. Now, we are fully happy with our new business tools and have already noticed their efficiency and improvements in our customer service.”

Stepan Kharchenko

Gofit Founder

“We had a lot of synergy with the development team creating and brainstorming, drawing the links and accesses. As a result we have a reliable solution that covers all the processes, clients, relations, financial flow, administrating, KPI’s and other operations. This solution assists our everyday operational tasks and brings the business to the higher level of maturity.”

Miroslav Bykov

CEO of it education academy

“Working on the project we appreciated the level of communication and team’s deep involvement. The end product turned out better than expected, particularly due to implementation of several modern technologies. We appreciate its quality services and recommend GNS as a reliable IT partner.”

Adam Hummell

DailyRoto LLC Co-Founder

“During the work process we communicated with manager and developers. All of them showed their competency, expertise, and professionalism through explaining all the details, sharing ideas and suggestions to extract information for satisfaction of our needs. All the communications were smooth and quick, which is a big advantage during the work.”

Asel Baitassova

Director of “Common Factor” LLP

“While the development process, GNS IT specialists demonstrated high level of proficiency, strong expertise and good quality of service. We had ongoing communication process, and got all our wishes and needs implemented. Now, we are fully happy with our new business tools and have already noticed their efficiency and improvements in our customer service.”

Stepan Kharchenko

Gofit Founder

“We had a lot of synergy with the development team creating and brainstorming, drawing the links and accesses. As a result we have a reliable solution that covers all the processes, clients, relations, financial flow, administrating, KPI’s and other operations. This solution assists our everyday operational tasks and brings the business to the higher level of maturity.”

Miroslav Bykov

CEO of it education academy

“Working on the project we appreciated the level of communication and team’s deep involvement. The end product turned out better than expected, particularly due to implementation of several modern technologies. We appreciate its quality services and recommend GNS as a reliable IT partner.”

Adam Hummell

DailyRoto LLC Co-Founder

“During the work process we communicated with manager and developers. All of them showed their competency, expertise, and professionalism through explaining all the details, sharing ideas and suggestions to extract information for satisfaction of our needs. All the communications were smooth and quick, which is a big advantage during the work.”

Asel Baitassova

Director of “Common Factor” LLP

“While the development process, GNS IT specialists demonstrated high level of proficiency, strong expertise and good quality of service. We had ongoing communication process, and got all our wishes and needs implemented. Now, we are fully happy with our new business tools and have already noticed their efficiency and improvements in our customer service.”

Stepan Kharchenko

Gofit Founder

“We had a lot of synergy with the development team creating and brainstorming, drawing the links and accesses. As a result we have a reliable solution that covers all the processes, clients, relations, financial flow, administrating, KPI’s and other operations. This solution assists our everyday operational tasks and brings the business to the higher level of maturity.”

Miroslav Bykov

CEO of it education academy

“Working on the project we appreciated the level of communication and team’s deep involvement. The end product turned out better than expected, particularly due to implementation of several modern technologies. We appreciate its quality services and recommend GNS as a reliable IT partner.”

Adam Hummell

DailyRoto LLC Co-Founder

“During the work process we communicated with manager and developers. All of them showed their competency, expertise, and professionalism through explaining all the details, sharing ideas and suggestions to extract information for satisfaction of our needs. All the communications were smooth and quick, which is a big advantage during the work.”

Asel Baitassova

Director of “Common Factor” LLP

Contact us today!

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