Serhii Zhiltsov

Welcome to A.S.I! 

We are a dynamic and ambitious team of freelancers united under ASI, specializing in end-to-end full-stack development. From idea to launch, we transform concepts into reliable, scalable, and beautifully designed digital solutions. Our mission is simple: deliver top-quality results that meet client requirements precisely while ensuring efficiency, security, and innovation at every stage of development.We also welcome partnerships with other freelance teams to collaborate on larger projects, share expertise, and expand opportunities together.

What We Do?

Frontend Development

• Modern, adaptive, and responsive interfaces.

• Smooth, user-friendly UI/UX implementation.

• Seamless API integration with backend services.

• Cross-browser and mobile-first optimization.

Backend Development

• Flexible architectures: monoliths, modular systems, or microservices.

• Robust RESTful API development and database design.

• Secure integrations with external services & authentication providers.

• Focus on performance, scalability, and data protection.

UI/UX & Web Design

• Tailor-made designs crafted in Figma, Adobe XD, Photoshop.

• Interactive prototypes and user-centered UX flows.

• Complete UI Kits: typography, palettes, components, and states.

• Optimized assets (SVG, PNG, WebP) ready for production.

• Pixel-perfect responsiveness across devices.

• Design reviews ensuring flawless execution.

SEO Optimization

• On-page and advanced technical SEO.

• Smart site structure and best practices for ranking growth.

DevOps & Infrastructure

• CI/CD pipelines: automated build, test, and deployment.

• Cloud and server deployment with ongoing support.

• Hosting, VM, and infrastructure setup and maintenance.

• Monitoring, incident response, and backup strategies.

• Scalable, secure, and future-proof systems.