Serhii Chaika



Senior Frontend Engineer • Angular Developer • Full-Stack Engineer
Angular • TypeScript • NestJS • PostgreSQL


Location: Zug area, Switzerland
Legally authorized to work in Switzerland (Permit S)

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Professional Summary

    Senior Software Engineer with 14+ years of professional web development experience. Specialized in Angular and TypeScript with additional backend experience using NestJS and PostgreSQL. Experienced in building complex enterprise applications, analytics systems and internal platforms. Comfortable working in international teams and large-scale projects.

Technical Skills

  • Frontend

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


  • Backend

    NestJS, REST APIs, Prisma, PostgreSQL


  • Tools

    Git, Linux, Windows, Docker, VMware, DevOps and infrastructure maintenance



Professional Experience

  • Lead Full-Stack Developer

    SSTS - Ukraine, Jan 2023 - Jun 2025

    Tech stack: Angular, TypeScript, DevExpress, NestJS, PostgreSQL


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

    Miratech - Kyiv, Ukraine, Mar 2019 - Feb 2022

    Tech stack: Angular, TypeScript, DevExpress


    • Developed frontend components for a government tax service platform
    • Implemented enterprise UI using Angular and DevExpress
    • Built complex data entry forms and administrative interfaces
    • Collaborated with distributed international engineering teams

  • Frontend Engineer | Angular Developer

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

    Tech stack: Angular, TypeScript


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

    Flyupstudio - Chernihiv, Ukraine, Mar 2012 - Jan 2017

    Tech stack: HTML, CSS, JavaScript, jQuery


    • 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

    Tech stack: HTML, CSS, JavaScript


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


Education

  • Chernihiv National Technological University
    Computer Systems and Networks
    1998 - 2002 (incomplete degree)
  • National Technical University of Ukraine (KPI)
    Applied Computer Science
    1997 - 1998


Languages

  • English - Professional working proficiency
  • German - Basic, learning in progress
  • Ukrainian, Russian - Native