Hire the Best .NET Core Developers in Chernivtsi, UA

I help startups and businesses build scalable backend systems using PHP, Laravel, Symfony, and Java. I specialize in backend development, REST API development, SaaS platforms, CRM/ERP systems, e-commerce solutions, and custom web applications. I build secure, maintainable, and high-performance backend solutions designed to support business growth. My expertise includes: ⚙️ PHP/Laravel/Symfony - custom web applications, SaaS platforms, CRM/ERP systems, e-commerce backends, and complex business logic ☕ Java/Spring Boot - backend services, integrations, microservices, and enterprise-level applications 🔗 REST API Development - secure, well-structured, and documented APIs for web and mobile applications 🗄️ Databases - MySQL, PostgreSQL, Redis, database design, query optimization, and performance improvements 🔐 Security & Authentication - JWT, OAuth2, data validation, secure API design, and OWASP best practices 🚀 Performance Optimization - caching strategies, query tuning, background jobs, and scalable architecture 🔄 Third-party Integrations - payment systems, CRMs, cloud services, and external APIs I follow clean architecture principles, SOLID practices, and write code that is easy to maintain and extend. Why clients choose me: ✅ Clear communication and regular progress updates ✅ Focus on quality, deadlines, and business goals ✅ Ability to work with both new projects and legacy systems ✅ Flexible collaboration: hourly or fixed-price projects Whether you need to build a backend from scratch, improve an existing application, or scale your current system, I can help. Let’s discuss your project.

I am a Senior Fullstack Developer with over 15 years of hands-on experience in building and scaling Java , C# / Net , Angular applications for startups, enterprises, and SaaS platforms. Currently, I’m working as the Chief Technology Officer at InventorSoft, a software development agency specializing in web and mobile solutions. I bring a strategic mix of technical depth, team leadership, and product vision to every project. Why hire me🧐: 📌 Expert in Scalable Java and .Net Architectures - Over 15 years of experience in developing Java, .Net, C#, Angular scalable applications from different domains. - Backend systems built with Spring Boot (15+ years) – Delivered scalable microservices and high-performance business logic for enterprise-grade applications. - ORM & data access with Hibernate – Applied advanced ORM techniques for efficient database interactions, query optimization, and data integrity in distributed systems. - Frontend development with Angular & Thymeleaf Designed and delivered 200+ robust backend systems for SaaS products, e-commerce platforms, and enterprise clients. 📌 Cloud-Native Platform Engineering Specializes in building secure, scalable, cloud-native platforms using leading cloud providers: - 8+ years of production experience with AWS – Deployed scalable, secure, and high-availability applications. - 9+ years of hands-on Azure expertise – Delivered enterprise-grade solutions with Azure App Services, Azure DevOps, and SQL/Azure Storage. - 5+ years of experience on Google Cloud Platform (GCP) – Built and deployed containerized microservices using GKE, Cloud Run, and Firebase. 📌 API-First & Cloud-Native System Design - Strong background in API integration and microservice architecture. - Created high-performance APIs for platforms serving 50K+ users, ensuring seamless third-party integration and scalability. - Experienced in Docker & Kubernetes, enabling CI/CD pipelines and resilient containerized systems. 📌 Full-Stack Leadership & Agile Team Management - Led and mentored teams of 5–25 developers through all stages of the SDLC—requirements gathering to deployment and maintenance. - Specialized in building cross-functional teams for backend-heavy systems, modern UIs (React, Angular, Thymeleaf), and DevOps automation. My latest achievement as a Software Architect: 🤝 Partnered with 45+ SaaS companies to design and deliver secure, scalable platforms using Spring Boot, AWS, and modern cloud services. 🚀 Helped 10 tech startups scale from MVP to production—selecting the right tech stack, defining cloud-native architecture, and assembling strong dev teams. 💼 Enabled 5 client acquisitions through the development of enterprise-grade software that attracted major buyers and investors. 🏭 Led a digital transformation project for a multi-billion-dollar oil company, delivering a secure, API-first platform that automated mission-critical operations. 🧩 Technologies I Specialize In - Languages/Frameworks: Java, C#, .Net, Spring Boot, Hibernate, Thymeleaf, .Net Core - Cloud Platforms: AWS (8+ years), Azure (9+ years), Google Cloud (5+ years) - DevOps Tools: Docker (7+ years), Kubernetes (5+ years) - Integration & Architecture: RESTful API integration, microservices, clean architecture, CI/CD pipelines Clients that I am proud of: 💻 Shoeby – A fashion retail platform focused on modernizing the e-commerce experience with intuitive UI, product personalization, and seamless shopping journeys. 💻 CellRebel – Provides advanced mobile network analytics, helping telecom companies improve coverage and performance based on real user data. 💻 Blade – A technology-powered aviation company offering urban air mobility services, including helicopter and seaplane flights. 💻 Matics – A real-time operational intelligence system for manufacturers, offering production insights and process optimization across the factory. 💻 MedischeScholing – A medical e-learning platform that enables healthcare professionals to access, register for, and track accredited training and certifications. ➡️ Learn more about other projects on the InventorSoft portfolio Keywords: Java, Backend, Developer, Fullstack, Web, Cross-Platform, Mobile, Application, AI, OpenAI, Service, App, Development, Engineer, Integration, Build, Website, Expert, Spring boot, MySQL, Development Team, Integrated, SaaS Platform, remote, Full-stack, Senior, Software, Client Management, GraphQL, API, .NET, Asp.net, Programmer, Technical Lead, Dashboard, MVC, Developers, ASP.NET, AspNetZero, core, software, MAUI, C#, Angular, .Net, Core, Principal, Performance, Scalability, Microsoft, Blazor, SQL, Server, Frontend, React, Ruby on Rails, RoR/React, front-end, Tailwind, feature, TailwindCSS, Technical Staff, JavaScript, ROR

Most clients contact me when a system already exists, the requested change looks deceptively small, and nobody is quite sure what else it might break. That is the kind of work I do best. I help teams understand complex backend behavior, untangle integrations and business rules, and deliver production-safe changes. My recent work has involved payment and payout flows, recurring transactions, multi-currency rules, KYC/PCI processes, external APIs, data reconciliation, and legacy modernization. I can help when you need to: • diagnose a difficult production or data problem; • design or repair an API or payment integration; • modernize a mature backend without rewriting everything; • turn ambiguous requirements into an implementable plan; • take a cross-system change from investigation through production. I bring more than 15 years of software engineering experience, a PhD in mathematical modeling, and over 7,300 hours of Upwork work with 100% Job Success. I work AI-first. I use AI during discovery, design, implementation and verification to challenge assumptions, trace edge cases and shorten feedback loops. It helps me move faster; I remain responsible for the decisions and the result. My deepest implementation experience is in C#/.NET, SQL Server and PostgreSQL. I am not limited to one stack, but I am most valuable where the real problem sits between code, data, integrations and business rules. A good first engagement is often a focused paid review. Show me the system and the problem, and I will help determine what is actually happening, what is risky, and what should be done next.