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Leobit is a full-cycle . NET, AI, and web application development provider for technology companies and startups primarily located in the US, EU, and the UK. We have representative offices in Austin, TX (USA), Tallinn (Estonia), Kraków (Poland), London (UK) and the development center in Lviv (Ukraine) with 170+ talented software engineers, architects, QA experts, and UI/UX designers. Our Achievements:Microsoft Solutions Partner - Digital & App InnovationISO 9001:2015 and ISO 27001:2022 CertifiedISTQB Platinum PartnerTop . NET Developers in 2025 by ClutchCustomer Service Department of the Year in 2025 by Stevie® AwardsLeobit has successfully delivered over 150 well-designed and well-factored web & mobile applications to technology companies ranging from Fortune 500 firms to Silicon Valley startups. Our Services:. NET software developmentAI/LLM software developmentCustom software developmentDedicated development teamWeb app developmentMobile app developmentCloud developmentSoftware architecture designUI/UX designBusiness analysisQuality assuranceApp support & maintenanceTechnology consultingOur Key Technologies:Microsoft Stack: . NET, ASP. NET, C#, Azure, WCF, Entity Framework, MaUI, BlazorWeb/Frontend: React, Angular, Vue, jQuery, TypeScriptBackend: . NET Core/C#, Ruby, Node, PHP, PythonMobile Technology Stack: iOS, Android, Flutter, Swift, KotlinAI integration

Everlabs is a full-cycle software partner born in Cherkasy, Ukraine and now collaborating with clients and teams across the US and Europe. For 11+ years our cross-functional squad of engineers, designers and PMs has delivered SaaS, e-commerce and logistics platforms that reach millions of users and helped founders like Trainual and GoldAvenue scale or exit successfully. Clients score us a perfect 5. 0 on Clutch for quality, schedule and value.   Ruby on Rails is still our happy place, ReactJS powers our front-ends and Swift/Kotlin keep us native, yet we reach for . NET, NodeJS or serverless whenever that’s the smartest fit. We pair that technical range with lean, transparent workflows and an ownership mindset that treats every project as a product, not just a backlog. Behind the scenes you’ll find a knowledge-sharing culture, professional–development budgets and a flexible hybrid setup — so if you’re a curious engineer, designer or QA looking to work with modern tech and real product challenges, we’d love to meet you. Follow #teameverlabs on Instagram and see how we work! 🚀

About Servus Systems Integration LLCServus Systems Integration LLC (SSI) is your trusted partner for seamless payment processing solutions. With over 20 years of experience in the payment industry, we empower businesses of all sizes to accept payments effortlessly across various POS terminals. Our team of experts leverages this deep understanding to develop and implement robust, brand-agnostic payment solutions. This translates to:Flexibility: Integrate seamlessly with any POS terminal you use, regardless of the brand. Proven Success: Backed by dozens of successful installations, our solutions are reliable and efficient. Peace of Mind: Benefit from our extensive industry knowledge and a team dedicated to your success. We understand that every business has unique needs. That's why we take a personalized approach, tailoring our payment solutions to perfectly integrate with your existing systems and workflows. Ready to streamline your payment processing and unlock new growth opportunities? Contact Servus Systems Integration today!Компанія Servus Systems Integration LLC (SSI) — ваш надійний партнер з питань інтеграції безпроблемних рішень для обробки платежів. Завдяки понад 20-річному досвіду роботи в платіжній індустрії, ми допомагаємо підприємствам будь-якого масштабу легко приймати платежі на різних POS-терміналах. Наша команда експертів використовує ці глибокі знання для розробки та впровадження надійних універсальних платіжних рішень. Це означає:Гнучкість: Безпроблемна інтеграція з будь-яким POS-терміналом, незалежно від бренду. Доведена успішність: Наші рішення, підтверджені десятками успішних інсталяцій, є надійними та ефективними. Спокій: Скористайтеся нашими глибокими знаннями галузі та командою, яка прагне вашого успіху. Ми розуміємо, що кожен бізнес має унікальні потреби. Саме тому ми використовуємо персоналізований підхід, адаптуючи наші платіжні рішення для ідеальної інтеграції з вашими існуючими системами та робочими процесами. Готові оптимізувати обробку платежів та відкрити нові можливості для зростання? Зверніться до Servus Systems Integration вже сьогодні!

Tubik is a digital agency that, since 2013, has been helping both large and small businesses employ design to improve communication with their customers or users and increase sales of products and services. With us, you can create a new visual image for your brand, develop an interface for a mobile application, as well as create and launch a website or a bright marketing campaign. We find ways and solutions to achieve the goals of our clients utilizing design.

 Qream is a design transformation agency that crafts standout websites and brand identities for tech companies, helping them break through market noise with bold, strategic design. Our focus is on creating meaningful design that drives positive change across industries like Web3, Blockchain, MedTech, FinTech, EdTech, and more.

XPAY Group LLC – Digital Payment SpaceXPAY Group LLC (XPAY) combines two main business directions:Payment Service Provider (PSP): Facilitates payment processing and provides services to a wide range of participants in the Ukrainian e-commerce market. Fintech Company: Specialises in the development of innovative products and services for the financial market. Our flagship product is a software and hardware solution designed to facilitate electronic money operations. In less than a year and a half, we have grown from a startup to a financial services provider. Since 2018, the company has successfully operated in the B2B segment, maintaining a stable client portfolio. The company holds the status of a "Technological Operator" of payment services, with its operations authorised by the National Bank of Ukraine (Notification of inclusion in the Register of Payment Institutions: No. 27-0018/33703 dated 19. 06. 2018). XPAY adheres to international security standards, including PCI DSS Level 1, version 4. 0.

At CodeSeek, we create custom web solutions designed to elevate your business 🌐. Fueled by passion and innovation, we’re constantly exploring new industries and technologies to deliver impactful results 💻. Let’s bring your vision to life together! ✨

At Blackbird, we empower startups to thrive. Specializing in Seed and Series A companies, we extend runways by enabling engineering teams to focus on growth-driven features while we take care of everything else. With offices not only in Ukraine but also in Colombia, Spain, and Poland, we bring deep expertise in SaaS, cloud-native products, frontend applications with React, and both native and cross-platform mobile apps—all within a fast-growing tech ecosystem that operates with zero downtime. Want to know how we can help? Reach out! Our team will conduct a comprehensive tech assessment and present tailored options to elevate your startup to the next level.

💬 UniTalk — a customer communication platform in one windowAll-in-one: calls, SMS, messengers, email, CRM, and AI tools•    8+ years on the market•    100+ million phone calls per month•    40+ free integrations•    Clients in 135+ countries•    24/7 customer support

MVP for You Startup: We offer you our professional team with high-quality project management, established processes, and advanced technologies to build a minimum viable product (MVP). Partner with our bespoke MVP development company to create new opportunities for your business . CTO as a Service: With CTO advisory services, you don’t necessarily need to hire one in-house. Access the expertise and strategic guidance of such an expert on a contract basis. Staff Augmentation: 10 Years of providing software development and staff augmentation services have made us experts in creating all kinds of digital solutions for businesses.

Компанія UNITSOFT є офіційним сертифікованим партнером Odooна ринку України та Канади.  Головний офіс компанії знаходиться в м. Київ, другий офіс розташовано в Канаді, в місті Кітченер, Онтаріо.   Наша команда складається з висококваліфікованих фахівців, які вже більше 20 років впроваджують комплексні програмні рішення для великих міжнародних компаній та їх філіалів.

Full-cycle iOS and Android Application development agency from Zaporizhzhya, Ukraine. Website-portfolio: https://cookiedev. com/ Full-cycle means that we provide services at every stage of iOS and Android application development process.  We grow our business by helping our customers to grow theirs.  We build iOS apps (iPhone, iPad) and Android apps (phone and tablet) of any complexity or style (material style, flat style):- delivery and ordering systems related applications- logistics mobile applications- marketplace apps- video and chat applications, WebRTC / VoIP, socket connection- booking mobile apps- online TV applications- educational applications- applications for online stores- cleaning services- in-app purchases and in-app subscriptions related apps- iOS apps with iOS specific features- Android material apps with Android specific features- AndroidTV applications- you tell it - we do it iOS skills include but not limited to:- Swift 3 / Objective-C- iOS SDK, xCodeb- Protocols: JSON-RPC, XML, RPC, SOAP, REST. - Integration with existing social networks: Facebook, Twitter, Vkontakte, G+- 2D games: Cocos2D, Cocos2Dx- E-books (static or interactive), Newsstand- Databases: SQLite, CoreData- BLE 4. 0- Mobile advertisement: iAd, AdMob, AppLeads, Flurry, AdWhirl- Other servises and SDKs: Braintree, Liqpay, Yandex. Money, Branch, Maps (OSM, Google, Apple), LinPhone, FrozenMountain, ooVoo, Flurry Analytic, Google Analytics, Crashlytics, Test Flight, other Android:- Java / Kotlin- Encryption: OpenGPG. - Protocols: JSON-RPC, XML-RPC, SOAP, TCP/IP. - simple applications OpenGL ES- Integration with social networks (Facebook, Twitter, Vkontakte, MailRu, Odnoklassniki), Google services (e. g. Youtube, Google Cloud Printing), Payment gateways (Braintree, PayPal, Liqpay, Yandex. Money)- Interaction with external devices (BLE 4. 0/SPP/USB). - Android SQLite- Google Billing, in-apps- VoIP and WebRTC integrations React Native skills:- TypeScript- Node. JS (MERN stack)- JavaScript- ES6+- MongoDB- HTML5, React, CSS- Redux- Material UI Web technologies stack:- React. js,- Angular. JS, Angular 2+- Laravel (PHP framework),- Symfony (PHP framework),- Node. JS,- VueJs- Express. js,- Bootstrap,- Jquery- Integration with social networks (Facebook, Twitter, Vkontakte, MailRu, Odnoklassniki), Google services (e. g. Youtube, Google Cloud Printing), Payment gateways (Braintree, PayPal, Liqpay, Yandex. Money)- Protocols: JSON-RPC, XML-RPC, SOAP, TCP/IP and much much more.  You come to us with an abstract idea and after time we’ll submit a fully functional app to AppStore or Google Play Market. We create Tech Specs documentation, mockups, app designs, development itself, application updates as well as upgrades, along with many other services more or less connected with iOS and Android development.