Develop your mobile and web application with us

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Why Flexum

We have years of experience in software development, and we use it to build solutions that grow your business.

  • Right solution for every problem

    Accurate analysis of your business problem to build optimal in terms of cost and functionality custom solutions.

  • Future-proof software architecture

    Adding new features should not be a costly endeavor that requires significant solution rewrite.

  • Full trust and transparency

    We’re focused on a long-term partnership.

  • Talented professionals

    The experience of countless interviews to hire professionals who know how to do their job efficiently.

  • Smart development

    The best coding practices. Getting most out of available coding instruments.


We provide support in full-cycle software development, and here are our core specialties:

  • Cross-platform mobile apps

  • Front-end web apps

  • Product design

  • Project management

  • Quality assurance

  • Support & maintenance

Our team has professional experience in proven technologies, including:

  • React

  • React Native

  • Progressive Web Applications

  • Web Components

  • Node.js

  • Firebase

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Bring clarity to work every day

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Our approach

We take a holistic approach to creating, delivering, and maintaining quality software with an emphasis on user experience.

  • Discover

    Closely analyzing your idea to get the best understanding of the problem and the solution. We’ll scope and structure your idea and define a product roadmap to get the work done quickly and efficiently.

  • Design

    Crafting a beautiful product that attracts attention and clients. We can develop design, which will satisfy your taste, from scratch. Or, we can develop a product based on your designs and wireframes.

  • Build

    Developing products following the pricing model that suits your budget and goals the most. Whether it’s a short fixed-price project, or a more lengthy Time & Materials endeavor, we’ll choose the cooperation approach that’ll help you to stay in control of all nuances.

  • Test

    Thoroughly testing software to make it bulletproof. We’ll quality assure the product, and make sure we’re not missing any edge case.

  • Deliver & Maintain

    Making sure the product withstands future challenges. We’ll deploy software to your environment (or app stores) and provide our full support in its maintenance.

Who we are

Team of highly experienced and knowledgeable professionals.

We see the bigger picture in everything we do, and that's why we're here to help you. Our focus lies on creating applications with leading-edge technology and a truly unique user experience. It's not just about landing pages, it's about long-term customer engagement through beautifully designed apps that work across all platforms. From concept to completion, we provide exceptional service and elegant solutions at an affordable price. Hire Flexum today!

Myron Mavko

Myron Mavko

CEO & Co-Founder

Anton Chuiko

Anton Chuiko

COO & Co-Founder

Serhii Zhelizniak

Serhii Zhelizniak



Whether you have a project or need a service, we will get the job done right the first time. Our works speak for themselves:

Quality assurance solution for call centers

Using a custom API integration, the platform is able to load phone call records from a call center. Afterward, QA specialists can score these records. As a result, a call center’s manager can see the performance of his or her employees and coach them to increase lead conversion and improve customer retention to drive the business value of his or her company.

Integrated audio player solution for media businesses

A turnkey solution that allows a media business owner to integrate an audio player into his or her website. The visitors of the website can use the player to listen to audio versions of articles on the website. The visitors can sign in, add articles to the queue to listen to later as well as playback them on desktop and mobile devices.

Real estate management platform and CRM

The in-house platform that is used by the company’s real estate agents to match buyers with appropriate properties. Agents can schedule open houses and add new prospective buyers. In addition, admins can monitor agents' performance.

Nautical navigation mobile app

A cross-platform mobile app for sailors and fishermen. The app has cruising and auto-routing features and serves proprietary nautical charts from a private tile server. The app has paid premium features, such as weather forecasts and offline maps.