S

Sergiusz Kamianiok

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Warsaw, Masovian Voivodeship, Poland

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  • Visa
    Senior Software Engineer (UI)
    Visa
    Feb 2024 - Current (2 years 7 months)
    • Led the module release process from scratch, including security assessments and manifest creation. • Set up TypeScript configuration in the existing project and converted modules to TypeScript. • Extensively leveraged AI agents such as Cline (integrated with Jira, Wiki, and GitHub MCP servers), Claude Code, and GitHub Copilot on a daily basis to enhance productivity and code quality. • Authored memory banks for Cline to optimize contextual understanding and workflow automation, and implemented end-to-end (E2E) tests using Cline for improved reliability and coverage.
  • Olx Group
    Frontend Engineer
    Olx Group
    Dec 2023 - Mar 2024 (4 months)
    • Developed new features using Vue 3, including the Composition API. • Wrote automation tests using Playwright. • Worked with the NestJS framework and AWS serverless architecture.
  • OpenX
    Software Engineer IV (UI)
    OpenX
    Nov 2022 - Mar 2023 (5 months)
    • Migrated app modules from Formik to React Hook Form. • Converted the legacy Angular 2 portion of the application to React. • Created 10+ pages and 30+ components, including forms, using React Hook Form. • Used GitLab for version control, and GitHub Actions for CI/CD.
  • RSM US LLP
    Senior JavaScript developer
    RSM US LLP
    Oct 2021 - Sep 2022 (1 year)
    • Designed and implemented a micro-frontend architecture using the Webpack Module Federation plugin. • Integrated OCR form tools (an open-source Microsoft project) into a separate micro-frontend. • Set up a Dockerfile to integrate with an Azure pipeline.
  • V
    Remote Frontend Engineer (part-time)
    Vivus tech
    Nov 2020 - Jul 2024 (3 years 9 months)
    • Converted the legacy app from jQuery/BigCommerce to NextJS/Strapi CMS. • Converted Figma designs into semantic Liquid templates using Shopify. • Converted numerous Figma designs into a NextJS app. • Developed the company portfolio website using Django and JavaScript.
  • F
    Software Engineer (UI)
    Fieldcode
    Sep 2020 - Sep 2021 (1 year 1 month)
    • Designed and implemented a separate data visualization module using the Victory chart library. • Designed and implemented a Broadcast Channel API and RxJS notification system. • Created 10+ pages, 30+ components including forms. Integrated the app with 10+ REST APIs.
  • EPAM Systems
    JavaScript developer
    EPAM Systems
    Dec 2018 - May 2020 (1 year 6 months)
    • Implemented a complex "wizard form” component from scratch, featuring extensive business logic, including validations and page transitions. • Set up the project pipeline with Docker and Jenkins. • Created 5+ pages and 30+ components including a React data grid.
  • SaM Solutions
    Junior frontend developer
    SaM Solutions
    Nov 2017 - Nov 2018 (1 year 1 month)
    • Designed app architecture using ES6 classes and the factory pattern. • Designed a CSS architecture using a modular approach with SCSS and the BEM methodology. • Integrated WebSockets into the auction module. • Converted multiple Figma designs into code.