Switch to English?
Yes
Переключитись на українську?
Так
Переключиться на русскую?
Да
Przełączyć się na polską?
Tak

Serhii Zhiltsov

Ukraine Mykolaiv, Ukraine
3 months 29 days back
Available for hire available for hire
age 28 years
on the service 3 years
  • web developer
  • websockets
  • Apache/Nginx
  • grafana
  • rabitMQ
  • Microservices
  • vue3
  • Minio
  • Redis / PostgreSQL / MySQL
  • socket.io
  • apache kafka
  • React/TypeScript
  • Fullstack developer
  • jenkis
  • Cloud Service

Rating

Successful projects
No data
Average rating
No data
Rating
350
Javascript and Typescript
605 place out of 3449
Web Programming
1660 place out of 6421

Language proficiency level

Русский Русский: fluent
Українська Українська: advanced
English English: intermediate

CV

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.

Skills and abilities

Programming

Design & art

Services


Promotion

Mobile development

Administration

  • DevOps
    from 27 USD for hour

Portfolio


  • 113 USD

    Landing page for Peanut Butter Order

    Web Programming
    The frontend of the single-page landing page implemented by us according to the client's ready-made layout on Vue3.
  • Mailbox

    Web Programming
    MBox - a unique platform created for enjoying music without loss of quality. Here you can listen to audio in FLAC format, enjoy internet radio, and stay up to date with the latest news from the world of music and concert events. MBox will resemble such well-known services as Spotify, Deezer, and Last FM, but our goal is to provide unique opportunities for true music lovers and enthusiasts.