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Serhii Chaika

Serhii Chaika



IT Specialist • Senior Software Engineer • Frontend developer • Full-Stack
Angular • TypeScript • JavaScript • NestJS • PostgreSQL • Windows • Linux


Menzingen, Zug, Switzerland
Ukrainian, male, married, no bad habits
Legally authorized to work in Switzerland (Permit S)
Available immediately

Contact

Professional Summary

IT Specialist with 14 years of commercial web development, 25 years overall IT commercial experience, 30 years of hands-on hardware practice. Expertise as a Senior Software Engineer - Angular, TypeScript or JavaScript, NestJS, PostgreSQL. Able to PC assembly, BIOS configuration, OS installation (Windows / Linux), hardware troubleshooting, network configuration, and server maintenance. Experienced with Git, Docker, VMware, and CI/CD infrastructure. Works effectively both independently and within international engineering teams.

Technical Skills

  • Systems & Infrastructure

    Windows, Linux, Docker, VMware, CI/CD pipelines, server maintenance, system administration, network configuration, DevOps, infrastructure maintenance, Git

  • Hardware & IT Support

    PC assembly, hardware troubleshooting, component testing, software installation, OS installation and configuration, peripheral setup, hardware cleaning, and maintenance

  • Frontend

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

  • Backend

    NestJS, REST APIs, Prisma, PostgreSQL

Professional Experience

  • Full-Stack Developer

    Coding own projects - Switzerland, Aug 2025 - present

    JavaScript • Forge • ClaudeCode (React + Java)


    • Developed Jira plugins (Forge-based and Server/DC-based) and webapps for self usage
    • Testing and evaluation of Claude plugins and skills
  • Lead Full-Stack Developer

    SSTS - Ukraine, Jan 2023 - Jul 2025

    Angular • TypeScript • DevExpress • NestJS • PostgreSQL


    • Maintained deployment environments and server infrastructure (Linux / Windows)
    • Led development of a brigade-level analytics platform for operational data collection
    • Designed and implemented core parts of the application architecture
    • Owned architecture of a large Angular application with 80+ functional modules
    • Developed backend APIs using NestJS and PostgreSQL
    • Built analytics dashboards and data processing interfaces
  • Senior Frontend Engineer | Angular Developer

    Miratech - Kyiv, Ukraine, Mar 2019 - Feb 2022

    Angular • TypeScript • DevExpress


    • Managed CI/CD pipelines and deployment automation
    • Developed frontend for a government tax service platform
    • Implemented enterprise UI using Angular and DevExpress
    • Built complex data entry forms and administrative interfaces
    • 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 web platform for travel agent reward programs
    • Implemented agent portal (25+ pages) and administration interface
    • Built Angular frontend features and UI components
    • Worked in Scrum teams
  • 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
    • Worked with HTML, CSS, JavaScript, and CMS platforms
  • Web & Print Designer

    CBIT | Freelance - Kyiv, Ukraine, 2003 - 2012

    HTML • CSS • JavaScript


    Web Designer BCIP

    • Web design, banners, frontend markup for client websites
    • Print design and digital graphics

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/C1 (professional working proficiency)
  • German - A2/B1 (currently learning)
  • Ukrainian, Russian - Native