Oleksandr

OLEKSANDR SMIIAN
Front-end developer
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EXPERIENCE SUMMARY
Front-end developer Front-End Developer with experience building
complex interfaces and scalable architectures
Struktura from the ground up. Fully developed the front-
end of a SaaS product — including component
01/2023 - Present Kyiv, Ukraine design, performance optimization, responsive
•Improved frontend performanceby optimizing page load speed, layouts, REST API integration, and building
implementing image compression, and adopting modern formats, marketing funnels and high-conversion landing
resulting in a 20 PageSpeed score increase and moving the project pages using Next.js. Experienced in render
into the green zone. optimization, code refactoring, and maintaining
•Developed analytics with asynchronous loading to reduce main- clean, modular codebases. Skilled in setting up
thread blocking and enhance overall responsiveness. CI/CD pipelines, handling asynchronous data
•Implemented a complete analytics system, including custom tracking flows, and enhancing UX through a
via Web Workers for non-blocking event processing. performance- and stability-driven approach.
•Integrated Growth Book Visual Editor for client-side A/B testing,
enabling non-technical teams to launch experiments without code
changes.
•Developed marketing funnels and high-conversion landing pages LANGUAGES
using Next.js, focusing on performance, UX, and scalable
architecture. English
•Contributed to WordPress blog development by customizing Intermediate
templates, configuring plugins, and integrating ACF and Contact
Form 7.
•Maintained Docker-based local environments, handled bundle Ukranian
updates, executed migrations, and resolved development issues. Native
•Implemented automated testing and CI/CD pipelines with Jenkins,
deploying to staging and QA environments.
•Integrated RESTful APIs, ensuring stable data flow, robust error SKILLS
handling, and optimized caching.
•Applied TypeScript for strict typing, improving code reliability,
React WordPress JavaScript
maintainability, and internal documentation.
•Conducted code reviews, enforced coding standards, and ensured
consistency across the codebase. HTML CSS Webpack Docker
•Optimized Webpack configuration by enabling code splitting, tree
shaking, and caching strategies to reduce bundle size and speed up Twig PHP Jenkins AB Testing
builds.
•Developed reusable utility functions and scalable UI components in
Next.js, with SSR, Context API, and full i18n support. REST TypeScript Caching
•Actively used Jenkins CI/CD , Jira, Postman, Swagger, Sentry,
Crowdin, and Mastic in daily team workflows. Next.js JIRA Postman

Swagger Sentry
EDUCATION
Bachelor
UkrainianState University of Railway
2014 - 2018 Kharkiv, Ukraine
•TransportFacultyof"Information and Control Systems and
Technologies"

Master
KharkivHigher education
2018 - 2019 Kharkiv, Ukraine
•Departmentof "TransportCommunication"