Dmitriy

Dmytro Herasymenko
Front End Developer
Frontend engineer with over 5+ years of experience in ReactJS, skilled in building modern and user-
friendly web applications. A team player focused on results, performance optimization, and improving
product quality. I enjoy solving complex problems and creating real value for users.

CONTACT WORK EXPERIENCE - 5+ YEARS
 linkedin
 d_herasymenko Face IT | 2022 – 2025 (3.5 years)
 github
Software Engineer (Frontend)
 [відкрити контакти](див. вище в блоці «контактна інформація») 🥇 Achievement: Led the technological stack selection
and architectural design for three large-scale SaaS
 Uman, Ukraine
applications (Next.js 14), while also ensuring high stability
in a separate Web3 project, which collectively increased
LANGUAGES development productivity by 20% and reduced support
load by 30%.
English: Intermediate
Ukrainian: Native Projects:
Web3 / Fintech Projects
SKILLS Stack: React, TypeScript, Tailwind, wagmi, MetaMask,
REST APIs
React.js, Next.js Contribution: Developed secure wallet connection flows
State managers: Redux, Toolkit, and stable crypto transaction handling. Implemented a
MobX, Zustand real-time transaction monitoring admin panel. Optimized UI
Markup and Styles: rendering and introduced reusable component patterns,
CSS3/SCSS/LESS reducing development time for new features. Improved
UI libs: TailwindCSS, Bootstrap, overall product stability and user retention for Web3
AntDesign, MaterialUI, NextUI, operations, contributing to faster release cycles and
Radix UI reduced support load.
Forms libraries: useForm, React
Hook Form SaaS / Real Estate / EdTech Platforms
Interaction with backend: REST Projects: Levi Itzhak Apartments, Edu Tech, Teamgeist
API, Axios, WebSocket Stack: React, Next.js 14, Redux Toolkit / MobX,
Work with dates: Moment.js, WebSockets, Google Maps API, Formik, i18next
DayJS Contribution: Built and structured SPA applications from
Web3: MetaMask, web3-react, scratch, designing scalable architecture and shared
wagmi component libraries. Implemented role-based access
Chart Libraries: ChartJs, Recharts, control, multi-step forms, electronic signing, real-time
Google-Charts, D3.js updates, localization, and custom map routing logic.
Improved maintainability and long-term scalability. Also
Maps: Google Maps optimized address-based routing algorithms, reducing
Backend: Node.js, NestJS, user navigation time and support requests related to route
Express.js, Prisma, PostgreSQL, inaccuracies.
pg, Sequelize, JWT
Version control: Git / GitHub / Marketing & Corporate Websites
GitLab / Bitbucket Projects: FaceIT Team, Catalyst
Stack: Next.js, Tailwind, NextUI
Contribution: Delivered responsive, SEO-friendly
marketing sites with consistent design systems, reusable
UI elements, and smooth animations, ensuring cohesive
user experience and accessibility.
Additionally: Debugging, UI & performance optimization, AI
API integrations for content automation. Authored project
and UI style-guide documentation, conducted code
reviews, and supported the team in maintaining consistent
code quality.

482.solutions | 2021 (8 months)
Software Engineer
🥇 Achievement: Successfully delivered complex Web3
interaction flows (NFT minting, wallet integration) and
engineered enterprise-grade data visualization
dashboards, rapidly deploying production-ready front-end
applications with secure blockchain-backed authentication
within the 8-month tenure.
Projects:
Blockchain / Web3 Prototypes & Production Systems
Projects: Hackathon Prototype, Token NFT, Commercial
Paper, DTEK Energy Data System
Stack: React, TypeScript, REST API, Web3, MetaMask,
IPFS, ERC-721, HyperLedger Fabric, Node.js, Postgres
Contribution: Developed front-end applications from
scratch with seamless API integration and responsive UI.
Built Web3 interaction flows including wallet connection,
client-side hashing, NFT minting UI, and real-time
transaction display. Implemented blockchain-backed data
exchange with secure authentication. Delivered data
visualization dashboards and document/report generation
for enterprise energy management use cases.

Coffee Mobile | 2019 – 2020 (1 year)
Front-End Developer
🥇 Achievement: Spearheaded the UI/UX enhancement
and state management optimization for the catering
platform's E-commerce interfaces, successfully
implementing analytics dashboards (Recharts/amCharts)
and custom WordPress functionality that collectively
boosted overall user usability and conversion rates.
Projects:
Catering Platform & E-commerce Interfaces
Projects: Kavaap Admin Panel, Coffee Mobile Partner
Dashboard, Coffee Mobile Shop
Stack: React, Redux, Axios, Recharts, Bootstrap,
amCharts, WordPress (custom plugins)
Contribution: Developed admin and partner dashboards
with responsive UI and optimized state management.
Integrated APIs, added localization, and built analytics
dashboards with client-side Excel export. Enhanced UI/UX
for daily operational use and improved e-commerce
functionality using custom WordPress plugins to boost
usability and conversion.