Serhii Chaika

Professional Summary

IT Specialist with 14 years of web development and 25 years of overall commercial IT experience. Specialised in Angular, TypeScript, NestJS, and PostgreSQL. Proven ability to own and deliver large-scale frontend architectures, build backend APIs, and maintain production infrastructure. Experienced with Git, Docker, VMware, CI/CD pipelines, and Linux/Windows server environments. Works effectively both independently and within distributed international engineering teams.

Technical Skills

• Frontend

  Angular, TypeScript, JavaScript, HTML5, CSS3, SASS, LESS, DevExpress, Bootstrap

• Backend

  NestJS, REST APIs, Prisma, PostgreSQL

• Infrastructure

  Linux, Windows, Docker, VMware, CI/CD pipelines, Git, server administration, network configuration

• Hardware

  PC assembly, hardware troubleshooting, OS installation and configuration, component testing

Professional Experience

• Full-Stack Developer - Personal projects

  Self-employed - Switzerland, Aug 2025 - Present

  JavaScript • Forge • React • Java

  
  
  • Developed Jira plugins using Atlassian Forge and Server/DC frameworks
  • Built web applications for personal productivity and tooling
  • Testing and evaluation of AI-assisted development tools and workflows

• Lead Full-Stack Developer

  SSTS - Ukraine, Mar 2022 - Jul 2025

  Angular • TypeScript • DevExpress • NestJS • PostgreSQL

  
  
  • Led development of a brigade-level analytics platform for operational data collection and reporting
  • Designed and owned the architecture of a large Angular application with 80+ functional modules
  • Developed backend APIs and data models using NestJS and PostgreSQL
  • Built analytics dashboards and complex data processing interfaces
  • Maintained deployment environments and server infrastructure (Linux and Windows)

• Senior Frontend Engineer | Angular Developer

  Miratech - Kyiv, Ukraine, Mar 2019 - Feb 2022

  Angular • TypeScript • DevExpress

  
  
  • Developed frontend for a government tax service platform used at national scale
  • Implemented enterprise UI components using Angular and DevExpress
  • Built complex data entry forms and administrative interfaces
  • Managed CI/CD pipelines and deployment automation
  • Worked in Scrum teams with distributed international engineers

• Frontend Engineer | Angular Developer

  Amadeus Ukraine - Kyiv, Ukraine, Feb 2017 - Mar 2019

  Angular • TypeScript • Twig • PHP

  
  
  • Developed a web platform for travel agent reward programs
  • Implemented an agent portal (25+ pages) and a full administration interface
  • Built Angular frontend features and reusable UI components

• Frontend Engineer

  Flyupstudio - Chernihiv, Ukraine, Mar 2012 - Jan 2017

  HTML • CSS • JavaScript • jQuery • PHP

  
  
  • Delivered 150+ commercial websites and web applications across multiple industries
  • Designed and implemented frontend architecture and responsive layouts

• Web & Print Designer

  CBIT | Freelance - Kyiv, Ukraine, 2003 - 2012

  HTML • CSS • JavaScript

  
  
  
  
  • Web design, frontend markup, banners, and digital graphics for client projects
  • Print design across various media formats

Education

• Chernihiv National Technological University
  "Computer Systems and Networks: Specialized Computer Systems" - Chernihiv, Ukraine, 1998 - 2002
• National Technical University of Ukraine (KPI)
  "Applied Informatics of Physical Processes, Fields, and Systems" - Kyiv, Ukraine, 1997 - 1998

Languages

• English - B2 more or less (professional working proficiency)
• German - A2 Goethe Certified, B1 in progress (currently learning)
• Ukrainian, Russian - Native