Андрій

ANDRII
SYDORCHENKO
Frontend Engineer
React · TypeScript · Next.js · Vite & Build Tooling ·
Monorepo Architecture

PROFILE WORK EXPERIENCE
Frontend engineer with 4+ years of experience
building production React/TypeScript applications AVENTUS.IT (GG CHEST)
across fintech and marketplace products. On the
Frontend Engineer (Next.js, Typescript, Zustand, Tailwind, React Query)
current team, works within a Feature-Sliced Design
September 2025 - Present time
monorepo — delivering core product flows like
GGChest is a marketplace platform connecting buyers and sellers of gaming digital
authentication and payments, building out the UI
goods — game accounts, in-game currencies, and related items — built as part of a
component foundation, and improving build tooling
pnpm/Turborepo monorepo alongside a shared internal component library.
and developer experience. Strong track record of
owning features end-to-end, Work within a pnpm/Turborepo monorepo, using React, Next.js, TypeScript,
from architecture decisions to implementation, Vite 8, Tailwind CSS, and shadcn/ui, following Feature-Sliced Design (FSD)
while mentoring developers and collaborating architecture.
cross- functionally. Create the login and registration flows and built a new payment system on top
of Primer, giving full control over the checkout experience.
CONTACTS Established the project's typography system and built the foundational library
[open contact info](look above in the "contact info" section) (Telegram/Viber) of reusable UI components, setting the design-system baseline for the team.
Phone:
[open contact info](look above in the "contact info" section) Built a custom Vite plugin using SVGR to automate SVG-to-React icon
Email: [open contact info](look above in the "contact info" section) component generation, replacing a legacy CLI-based workflow, diagnosing
LinkedIn: [open contact info](look above in the "contact info" section) underlying Rolldown file-watcher bugs, and integrating the pipeline natively
-sydorchenko/ into the Vite 8 build.

GitHub: https://github.com/AndriySydorchen
ko FINIK.PRO
Frontend Engineer (React, Typescript, Redux)
LANGUAGE October 2021 - September 2025
Ukrainian - Native
A B2B digital banking platform enabling business clients to manage accounts,
English - Upper-Intermediate (B2+) – confident
communication in international teams payments, and day-to-day financial operations, used by enterprise customers as
their primary banking interface.
KEY SKILLS & TECHNOLOGIES Led frontend development of a scalable B2B banking platform serving enterprise
Languages: JavaScript (ES6+), TypeScript, clients, built with React, TypeScript, and Redux.
HTML5, Drove the migration to strict TypeScript across the codebase, eliminating a
major class of runtime bugs and improving long-term maintainability.
Frameworks: React, Next.js, Qwik
Proposed and planned the migration of a legacy admin console to a
State & Data: React Query, Zustand, Redux microfrontend architecture, laying the groundwork for independent team
Build & Tooling: Vite, Rolldown, Turborepo, ownership of features.
pnpm workspaces, Webpack, Biome, custom build Architected modular, performance-conscious UI components, including role-
based access control, dynamic routing, and encrypted data handling for secure
plugins
banking workflows.
Styling:Tailwind CSS, shadcn/ui, Material-UI, Introduced and enforced a code review process across the team, and mentored
React Bootstrap, CSS3/SCSS junior developers on React and TypeScript best practices.
Architecture: Feature-Sliced Design (FSD), Partnered closely with backend engineers and QA throughout the delivery cycle
to ensure smooth, reliable releases.
monorepo design, microfrontends, component-
Improved application load times through targeted performance monitoring, lazy
driven development, SOLID loading, and code splitting.
Payments: Primer
Testing: Jest, React Testing Library, JUnit, EDUCATION & CERTIFICATIONS
Mockito
FULLSTACK DEVELOPER (REACT, NODE, JAVA) - DAN.IT
Backend: Node.js, Java (Spring, Maven),
Sep 2019 - Feb 2021
Express.js
Databases: PostgreSQL, MongoDB TARAS SHEVCHENKO NATIONAL UNIVERSITY
Tools & DevOps: GitHub Actions (CI/CD), Vercel, Sep2014 - Jun 2016
Institute of high technologies (Magister)
Bitbucket, Jira, ESLint, Prettier, GraphQL,
WebSockets