Yuriy Y.

❗️Available for new projects❗️ I’m a Full Stack Developer with 10 years of experience at Volpis, where we build and scale production-ready digital products for startups and established companies. On Upwork, I’ve earned $300K+ across 37 completed jobs and 8,487 hours while maintaining 100% Job Success. Together with the Volpis team, we develop SaaS web applications, admin dashboards, customer portals, and API-driven platforms. We use React and Next.js to build fast, responsive interfaces; Node.js and TypeScript to implement scalable backend logic and APIs; PostgreSQL to manage structured product data; and AWS to deploy, monitor, and scale production systems. We help companies turn complex requirements into reliable, production-ready software. Our strongest experience is in logistics, fleet management, maps and location-based products, HealthTech, marketplaces, and enterprise SaaS. We have delivered products for Rand McNally, Magna International, Sharpen CX, HÖRMANN Intralogistics, and other international companies. We take ownership of technical delivery and cover the complete development cycle: product discovery, UI/UX design, architecture, frontend, backend, database design, integrations, deployment, QA, and long-term product support. What we can build for your business: • For SaaS Development, we create MVPs, subscription platforms, internal tools, and multi-role products designed for future scaling. • For Web Application Development, we build React and Next.js admin dashboards, customer portals, operational systems, and data-heavy interfaces. • For Back-End Development, we design Node.js systems with NestJS or ExpressJS, secure authentication, structured business logic, background jobs, notifications, and real-time functionality. • For API Development, we create documented RESTful APIs and GraphQL services that connect web applications, mobile products, databases, payment providers, analytics tools, and third-party platforms. • For API Integration, we connect products with Stripe, Apple Pay, Firebase, Twilio, Contentful, Algolia, CRM systems, email services, and external business platforms. • For Database Architecture, we design scalable data models with PostgreSQL, MongoDB, MySQL, Redis, and Prisma ORM, focusing on performance, indexing, caching, and data consistency. • For cloud deployment, we configure AWS or Google Cloud infrastructure, Docker environments, CI/CD pipelines, monitoring, and production releases. • For maps and location-based development, we implement Google Maps API, Mapbox, HERE, TomTom, GPS tracking, navigation, geofencing, and fleet management functionality. Our Full-Stack Development approach combines a maintainable React or Next.js frontend with a stable Node.js backend. In React Development, we focus on reusable components, responsive interfaces, predictable state management, and performance. In Node.js Development, we focus on secure APIs, database operations, business logic, integrations, and scalable server-side architecture. Selected results from products delivered with our team: • FleetSu achieved 97% location accuracy compared with dedicated tracking hardware and reduced driver onboarding to under two minutes. • The Holy Quran app reached 1M+ downloads, maintained a 4.7–4.8-star rating, and increased retention by 25% after its redesign. • My-Day, a corporate wellbeing platform for web, iOS, and Android, increased user engagement by 45% and received 5-star store ratings. • We developed SaaS admin systems for reservations, operations, reporting, payments, subscriptions, and customer management. • Through the Volpis team, we have delivered 100+ web and mobile products across logistics, fleet management, HealthTech, marketplaces, SaaS, and enterprise systems. For frontend development, we primarily use JavaScript, TypeScript, React, and Next.js. For backend development, we use Node.js, NestJS, and ExpressJS to implement REST APIs, GraphQL, WebSockets, authentication, and third-party integrations. For data-intensive products, we work with PostgreSQL, MongoDB, MySQL, Redis, and Prisma. For infrastructure, we use AWS, Google Cloud, Docker, Git, and CI/CD workflows. Clients work with us when they need ownership beyond isolated development tickets. We consider the business goal, existing architecture, technical constraints, security, maintainability, and future scaling before recommending an implementation approach. If you are planning a SaaS product, we can define its architecture and take it from MVP to a scalable production platform. If you need a web application, we can build the frontend, backend, database, and integrations as one connected system. If your main challenge is backend or API development, we can improve the architecture, performance, security, reliability, and data flows of your product. Send us your requirements, current architecture, or product roadmap, and we’ll help you identify the most practical next step.