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Techstack company is an international strategic technology partner with strong Ukrainian roots, delivering comprehensive digital transformation services worldwide. We unite nearly 200 experts across borders, combining staffing, engineering, and optimization services into one powerful offering. With over a decade of excellence, we’ve become a trusted partner for global businesses — 30% of which are $1B+ enterprises — delivering full-stack teams and empowering software engineering leaders. Rooted in our Ukrainian engineering heritage and strengthened by our international presence, Techstack unites the best of Eastern European technical excellence with global business practices, making us a partner capable of both precision in execution and vision in strategy. 💫 The Techstack Difference
Strategic Partnership:- Engineering with product ownership, aligned with your goals- Strong technical leadership and proactive delivery planning- Long-term scalability built into every architectureProfessional Excellence:- Senior-level expertise across all technologies- Cross-functional teams with diverse skill sets- Proficiency with modern tech stacksTransparent Communication: - Regular updates and detailed reporting- Direct access to your dedicated team- Clear project roadmaps & milestone trackingQuality-First Approach:- Rigorous code reviews and comprehensive testing protocols- Strict coding standards adherence- Industry best practices in every deliveryBusiness Value Focus:- Transparent pricing with no hidden fees- Resource optimization strategies- Value-driven development aligned with your goals- Scalable architecture design- User-centric development methodologyModern Technical Capabilities: - Cloud-native solutions- AI & ML integration|- Automated workflows- Agile methodology- Advanced DevOps practicesWe align with your product and business strategy, bring disciplined engineering practices, and build solutions designed for scalability, resilience, and long-term growth. Let’s build something that lasts! 

The InterLink company started its history in 1998 with several enthusiastic people. Their cooperation established InterLink company in 2000. We have experience building own products and working with our customers throughout the world on their ideas making them happen. We were one of the first companies that joined the Agile manifesto and actively use agile processes like Scrum and Kanban.  Among our customers are entrepreneurs with ambition startup ideas and well-known corporations (Nokia, Siemens, Xerox, BMW, Dell).  We know how to build fast for startups and how to build robust and long-living applications for enterprises.

ENG: Anima is an innovative neurotechnology platform for psychological assessment and mental health support. We combine web-based technology, evidence-based psychology, and neurobiology to deliver objective, personalized insights into a person's emotional and cognitive state through eye movement analysis. Our expertise lies in integrating science and technology. Anima uses attention bias assessment and eye-tracking to capture unconscious visual responses to emotionally charged stimuli. This enables the early detection of anxiety, burnout, and cognitive fatigue before these conditions manifest behaviorally. We have field-proven results. Anima is already used by thousands of individual users and is currently being tested in medical and corporate environments. We also participate in international innovation support programs such as Brave1 and Seeds of Bravery. We help organizations make mental health support part of everyday work. Anima is a science-based, user-friendly, and confidential tool that enables regular psychological monitoring and timely intervention. UA: Anima — це інноваційна нейротехнологічна платформа для психологічної оцінки та підтримки ментального здоров’я. Ми поєднуємо вебтехнології, доказову психологію та нейробіологію, щоб надати об'єктивну, персоналізовану інформацію про психоемоційний стан людини через аналіз руху очей. Наша експертиза зосереджена на поєднанні науки і технологій. Anima використовує методику аналізу упередженості уваги та айтрекінг для фіксації несвідомих реакцій на емоційні стимули. Це дозволяє виявляти ранні ознаки тривожності, вигорання та когнітивного виснаження ще до того, як вони стануть помітними у поведінці. Ми маємо підтверджені результати. Anima вже використовується тисячами індивідуальних користувачів і тестується у медичних та корпоративних середовищах. Ми також беремо участь у міжнародних програмах підтримки інновацій Brave1 і Seeds of Bravery. Ми допомагаємо компаніям інтегрувати підтримку ментального здоров’я у щоденну роботу. Anima — це науково обґрунтований, зручний і конфіденційний інструмент для регулярного моніторингу психологічного стану працівників та своєчасного надання підтримки.

Vignette ID is a system and revolutionary application that simplifies the process of paying for road usage in Europe. The first multi-state road payment app in nine European countries, it allows you to buy a vignette for multiple cars and countries at once. The application is easy to use and helps you pay for roads in Slovenia, Austria, Switzerland, Slovakia, Czech Republic, Hungary, Bulgaria, Romania, Moldova and tunnels in Austria in just a few minutes.

Smplfy unlocks expertise for business solutions through IT Staffing. Our specialization spans Talents on Demand, Dedicated Engineering Teams, High-End IT Consulting, and efficient IT Recruiting Services. When to partner with us:Expertise Shortage Solution: Rely on our expert developers and teams to bridge the knowledge gaps, handling everything from application architecture to robust IT infrastructure.  Rapid Growth Support: Trust us for the swift onboarding of skilled developers. We take charge of hiring, documentation, insurance, and offboarding, reducing HR complexities.  

R&D teams for any challenge. Crunch is a digital partner for global organizations that want to grow their business fast or strengthen their software development capabilities. Our expertise gives companies in the US, UK, Canada, Switzerland, Germany, Netherlands, Denmark, and Norway a competitive edge to achieve business goals. Our expertise includes end-to-end software development, digital services and consulting, AI&ML development, DevOps and cybersecurity competencies. Why companies choose us: Full-cycle development from a rough idea to ongoing support and maintenance; Effective recruitment process allows us to build dedicated teams faster than other IT companies do; Assemble the team of middle and senior qualified software engineers nearshore; Proven DevOps expertise that allows organizations to automate core processes. Technologies we work with: Backend: Python, Java, C#, . NET, Ruby on Rails, Node. js, C++, Scala Frontend: Angular, React, Vue. js, jQuery, Ember, TypeScript Mobile: React Native, Xamarin, Ionic, Kotlin, Swift Just drop us a line, we are ready to implement all your bold ideas!

Nova Digital is a Ukrainian IT company that is one of the largest providers of system solutions for manufacturing, logistics, and infrastructure companies. The company has extensive expertise in these industries. Nova Digital creates and maintains software products that process 30,000 transactions per second.   

Intsurfing is an engineering team focused on backend and data systems. We’ve been delivering for U. S. and EU markets since 2016, working with data-driven companies that need stable, long-term solutions. Our services include:- Scheduled data ingestion from external sources- ETL pipelines and large-scale data processing- Backend systems and API development- Legacy system modernization and migration- Data quality, validation, and monitoring- Data extraction from websites, images, PDFs

Founded in 2018 in Geneva, Switzerland, Software Service & Innovation (SSI) has grown from a small startup to a recognized provider of IT services. We specialize in bespoke software development, complex IT solutions, and cutting-edge digital transformation, delivering Swiss-quality precision and result-driven solutions to businesses of all sizes. Our expert team is committed to clarity, quality, and responsibility, ensuring that every project we undertake is executed with technical excellence and innovation. Whether you need custom software, cloud solutions, or DevOps expertise, SSI delivers tailored, high-performance solutions designed to maximize your business potential.  Partner with SSI for innovation, reliability, and success in your digital journey! 🚀

Link The World To Digital. We are a leading software development company based in Ukraine, specializing in delivering tailored software solutions and top-notch IT consulting services globally. Our expert technical team, headquartered in Kyiv, consists of highly skilled web and mobile developers, inquisitive business analysts, talented UI/UX designers and QA engineers, and dedicated project managers. As a software outsourcing company and web development agency, we thrive on unlocking new opportunities for start-ups and establishment businesses that are looking to drive innovation and growth. Our main values are high-quality work, agile development methodologies, and excellent communication with clients at all stages of work. We assist our clients in achieving digital transformation by serving as a strategic partner, which results in the enhancement of their products, acceleration of service delivery, optimization of operational efficiency, and expansion into new markets. We are rapidly implementing AI and machine learning solutions into our clients' products and evolving as an AI development company. Our services include: Discovery stage (Business analysis) UX/UI design Mobile App Development Web App Development QA and testing DevOps IT consulting Our holistic approach ensures that we address every aspect of your project, from concept to deployment, to provide you with the most effective digital solutions. Proudly recognized as an Upwork Top Rated Agency, we've consistently proven our commitment to delivering excellence and innovation in every project we undertake.