Вадим

Vadym Havryliuk
 Phone number: [open contact info](look above in the "contact info" section)  Email address: [open contact info](look above in the "contact info" section)
 Telegram: https://t.me/havryluke

ABOUT ME

Full-Stack Developer with 2 years of experience focused on building high-performance frontend applications, Web3 platforms,
and scalable backend services. Strong expertise in React, TypeScript, and browser extensions, with hands-on experience in
Node.js development, real-time systems, and AI-powered workflow automation / agent engineering. Experienced in delivering
production-ready features independently and optimizing complex data-intensive interfaces.

SKILLS

Frontend Core

React / JavaScript (ES6+) / TypeScript / Next.js / HTML5 / CSS3

State Management

Redux / Redux Toolkit / MobX / TanStack Query (React Query)

Forms & Validation

React Hook Forms / Formik / Yup

UI & Styling

Tailwind / Styled-Components / CSS Modules / Material UI / SCSS

Testing

Jest / RTL (React Testing Library)

Backend & APIs

Node.js / Express / REST API / WebSockets

Databases

PostgreSQL / MongoDB

AI & Automation

AI Agent Engineering / LLM Integrations / AI Workflow Automation

CMS & PHP Ecosystem

WordPress (PHP) / ACF / WPBakery

Blockchain & Web3

Web3.js / Ethers.js

Browser Extensions

Chrome Extension MV3

Cloud & Infrastructure

AWS (EC2, S3) / Git
WORK EXPERIENCE

 Bit Cher (Web3 outsourcing company)

Full-Stack Developer

[ 11/2024 – 03/2026 ]

• Contributed to the development and maintenance of several production Web3 applications, including an NFT marketplace, t
oken exchange interface, and internal KYC/AML moderation dashboard using React, TypeScript, Next.js, and Node.js.
• Increased development and operational efficiency by implementing AI-assisted automation workflows and agent-driven
tooling for repetitive moderation and data-processing tasks.
• Improved initial page load performance and NFT collection discoverability by developing a scalable Explore page using Next
.js SSR/ISR rendering for large dataset browsing.
• Optimized rendering performance and improved browsing experience for large NFT collections by implementing
debounced search, infinite scrolling, virtualization, and advanced filtering flows with Redux Toolkit and TanStack Query.
• Implemented reusable Web3 integrations, including wallet connection flows, network switching, token balance validation,
and blockchain transaction handling
• Reduced user-side validation errors and improved transaction flow reliability by designing a token exchange interface with
dynamic validation, balance-checking hooks, and optimized UX interactions.
• Built an internal KYC/AML admin dashboard for moderation teams with advanced data tables, filtering, search, and
pagination, enabling faster review and management of user verification workflows.
• Improved perceived application responsiveness and reduced redundant API requests by integrating TanStack Query
caching, background refetching, and remote state synchronization strategies.
• Improved reliability of analytics and third-party integrations by developing and maintaining Express.js backend services for
REST APIs and real-time data communication.
• Contributed to backend performance improvements by adding MongoDB indexes and optimizing frequently accessed
portfolio and analytics queries for real-time dashboard features.
• Increased stability of critical application flows by introducing unit and integration test coverage for Redux reducers, filtering
logic, and key user interactions using Jest and React Testing Library.

 SimilarWeb

Frontend Developer (Contract)

[ 05/2024 – 11/2024 ]

• Developed and maintained a WordPress-based blog section for marketing and SEO content delivery, supporting fast
publishing workflows for non-technical editorial teams.
• Reduced development time for new landing pages and blog sections by building a reusable component-driven architecture
with custom WPBakery elements.
• Improved maintainability and scalability of the WordPress codebase by designing modular PHP component abstractions
with clear separation of configuration, data preparation, and rendering logic.
• Implemented dynamic content management workflows using Advanced Custom Fields (ACF), enabling content managers
to configure layouts, banners, CTAs, and article sections without developer involvement.
• Reduced cross-page styling conflicts and improved long-term UI maintainability by developing reusable frontend modules
with isolated component-scoped styles and scripts.
• Refactored tightly coupled legacy template logic into reusable and configurable component abstractions, improving
maintainability of existing WordPress functionality.

EDUCATION AND TRAINING

Bachelor's Degree in Software Engineering (121)
NATIONAL TECHNICAL UNIVERSITY OF UKRAINE “KYIV POLYTECHNIC INSTITUTE” [ 2019 – 2023 ]

Master's Degree in Software Engineering (121)
NATIONAL TECHNICAL UNIVERSITY OF UKRAINE “KYIV POLYTECHNIC INSTITUTE” [ 2023 – 2025 ]

LANGUAGE SKILLS

Mother tongue(s): Ukrainian
Other language(s): English - B2