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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 Gold 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

BuildApps is at the forefront of developing innovative digital solutions tailored to automate and address the needs of small and medium-sized businesses. With our headquarters in Ukraine, our full-cycle company excels in transforming ideas into software excellence through expert design and development. Founded by tech leads with extensive professional backgrounds, we provide expertise at every level of our operations. We are passionate about our work and committed to delivering outstanding results. Each project is handled with enthusiasm and precision, ensuring that our solutions effectively meet client needs and deliver significant value.

Innovative IT Software Solutions. TEAM International is a trusted technology partner and IT service provider to industry leaders worldwide. We employ 1000+ creative and talented people in the USA, Colombia, Poland, Portugal, Mexico, Argentina, and Ukraine. At TEAM, we're driven by a clear goal to improve our common tomorrow and our children's future through relevant solutions and innovation. And as an IT service company, we believe that with the right people and approaches, technology can make our lives better. SERVICES Software development outsourcing Intelligent business automation Software QA & testing Microsoft services Professional IT consulting Data analytics services Managed IT services AI & Cybersecurity Studio Data Studio Design Studio Cloud Studio TEAM International was recognized by Clutch as one of the Leading Service Providers globally. Additionally, the company was included in the Software 500 ranking and named one of the Global Outsourcing 100 companies by IAOP for several years in a row. CERTIFICATIONS & PARTNERSHIPS Microsoft Gold Partner since 2011 (12 competencies) Amazon Consulting Partner since 2017 (exclusive cloud-native & hybrid solutions) UiPath Diamond Business Partner since 2010 (superior RPA & hyperautomation tools) YOUR BENEFITS OF WORKING WITH TEAM TEAM is US-owned and -managed, so all contracts are signed with the American legal entity We're a mid-sized company, so we're big enough to deliver but still small enough to care We're interested in stable and long-term partnerships, so clients stay with us for 3+ years TEAM is managed and run by IT industry veterans who have walked a mile in your shoes and understand your challenges well Senior-heavy engineering teams that share your brand values and contribute to your business success High employee retention rate, so we ensure stable delivery, increased productivity, and high engagement

Avenga is an international consultancy and technology partner delivering unique solutions that solve complex business and societal challenges. With 6000+ specialists they operate globally and provide a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX and UI design, managed services, product development, and software development. Avenga serves a wide range of industries, from telecom and satellite operators to banking, manufacturing, automotive, mobility, and healthcare - driving their AI-first transformation.  Their AI capabilities are embedded across all offerings, enabling organizations to drive intelligent automation, accelerate decision-making, and deliver highly personalized user experiences. Avenga is a part of the technology pillar within the family owned KKCG Group.  

Prozori Solutions is a Ukrainian software development and R&D company committed to empowering businesses, startups, and public sector organizations with secure, scalable, and high-performance software solutions. With over 15 years of experience and a team of 80+ professionals, we leverage cutting-edge technologies to drive digital transformation, streamline operations, and foster innovation. Beyond technology, we actively contribute to social impact initiatives, playing a key role in Ukraine’s digital transformation, particularly in Education, Procurement, and Healthcare. Our solutions help modernize public services, improve accessibility, and enhance transparency.

Pecode is a full-cycle development agency focused on creating unique software for game-changing companies. We focus on developing web and mobile applications, from UXUI Design to deploying and maintenance. Our main strength is Quality Assurance. We offer a custom QA strategy and its full implementation. Along with an analysis of functional opportunities and both Manual and Automated testing of the application. Founded in 2017, today Pecode is a community of more than 160 professionals with 7+ years of experience in 10+ industries, and hundreds of successful projects.

Achieve Unparalleled Business Success with Customized Web | Mobile | AI SolutionsFounded in 2015 by a visionary team of 15 strategists, Requestum has grown into a dynamic community of experts dedicated to reshaping the digital landscape and transforming bold ideas into powerful solutions. Today, we boast a team of over 100 professionals, working with clients in 20 countries on 50+ diverse products, earning industry recognition. What Sets Us Apart?Results-Oriented Solutions – We develop future-ready solutions that address critical business challenges and drive measurable success. Strategic Approach & Innovation – Our team applies analytical thinking at every stage, ensuring optimal development efficiency and effectiveness. Uncompromising Quality – We adhere to rigorous standards, delivering reliable, high-performance software that exceeds client expectations.

PayForce is a Ukrainian group of companies that develops ready-to-implement fintech solutions, provides support, tokenization, and transaction services for remote customer service and attracting new customers.  PayForce products are currently used by about 5 million people. Among the company's products is its own online banking system, iBank, which includes more than 20 ready-made modules and has already been implemented in more than 10 banks, including KredoBank, Industrial Bank, Agroprosperis Bank, International Investment Bank, and others. The PayForce platform has open APIs in accordance with the PSD2 standard, which allows its integration not only in Ukraine but also in other countries where this format is standard.  

ImproveIT Solutions is a full-service software development company that builds awesome digital products and strong engineering teams for hi-tech corporations and startups. Сore focuses are custom web/SaaS, AI and mobile app development. We also provide strong DevOps & Cloud engineers (AWS, GCP, Azure). WHAT CAN WE DO?create your own dedicated development team in Eastern Europe and transfer it to you for direct cooperation (buyout option)provide 1 qualified specialist as an ad-hoc team extension on a part-time or full-time basisbuild your product from scratch according to your needsOUR SERVICES:Mobile App Development (iOS, Android, hybrid): Swift, SwiftUI, Objective-C, Java, Kotlin, React Native, FlutterWEB development: React, Vue, Angular, TypeScript, Node, . Net, Python, PHP, JavaAI and ML Expertise: utilizing advanced algorithms and neural networks for business optimizationMVP development developing a cost-effective MVP from scratch according to your business needsUI/UX design: prototyping, branding, UI and UX design for web and mobile productsQuality assurance: our quality control team ensures that code is bug-free before a product release PROVEN EXPERTISE: Travel and HospitalityHealthCare and WellnessMedia and EntertainmentLogistics and DeliveryReal EstateE-commerce and RetailFinTech and accountingEducation and e-learningWHY OUR CLIENTS CHOOSE US:- we are transparent and realistic in our commitments- our portfolio includes solutions used in 75 countries- fast allocation of talents: from 2 days to 2 weeks- 80% of our engineers have 4-20 years of experience- all developers speak English- flexibility in cooperation models: long-term or short-term, part-time or full-time, fixed price or team extension starting from 1 developer. For more details visit our websitewww. improveit. solutionsor contact us viaE-mail: info@improveit. solutionsPhone: +48 459 56 80 65WhatsApp +380502096705

We develop modern web applications and software tools for international companies and startups, and we assist with migrating applications to a world-class level

You’ve got the strategy. We turn it into working solutions. For 20+ years, Sigma Software has worked with Fortune 500 companies, global vendors and technology start-ups. Our mission is to help innovation leaders move critical initiatives forward by aligning teams, systems, and priorities. With 1,800 engineers in AI, data, cloud, embedded, and cybersecurity, we deliver solutions that scale and last, with ISO-certified quality, security, and compliance embedded from day one. Strategic Initiatives we support:AI Adoption – use AI where it brings tangible value, starting from first pilots and scaling to wider use. Digital Product Innovation – create new software or add digital layers to existing products and services, built with security and compliance in mind. Experience Design – shape journeys across apps and portals so users reach the right outcomes with less friction. Regulatory Compliance – navigating the regulatory landscape complexity and translating standards into working processes for audit-ready operations. Operational Efficiency – replace slow or manual work with modern, automated solutions that cut cost and effort. Managed Services – ensure stability, security, and uptime without draining internal teams. Our work goes beyond solution delivery. Sigma Software Labs works with startups to shape and test new ideas. Sigma Software University not only grows future engineers but also helps our clients build internal capabilities through tailored literacy programs and training. Our R&D teams experiment with emerging technologies early, so when they become relevant, our clients can adopt them faster and with less risk. Together, this cycle of delivery, learning, and exploration makes us better partners and strengthens the outcomes we deliver.

North South Tech is a leader in digital and app innovation and a Microsoft Partner, helping businesses harness the power of cloud, AI and automation. North South Tech focuses on digital and app innovation, delivering high-impact solutions across cloud,automation, and AI to drive efficiency, scalability, and business transformation. By connecting world-class engineering talent with enterprises, we accelerate software development, optimize performance, and drive digital transformation. Our expertise in Microsoft (Azure) and other technologies like Amazon (AWS), Google (GCP) that enables organizations to build scalable, high-performing applications that unlock new growth opportunities in an AI-driven world.