Andrii

ANDRII DANYK
Senior Frontend Engineer | React · Next.js · TypeScript | Full-Stack: Node.js · NestJS
[open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section) • Telegram: @danykandrii • Chernivtsi, Ukraine (Remote, UTC+3)
[open contact info](look above in the "contact info" section)

PROFESSIONAL SUMMARY
Senior Frontend Engineer with 8 years of commercial experience building web and mobile products with React and
TypeScript across iGaming, ticketing CRM, workforce management and banking. Focused on Next.js (App Router,
SSR/SSG), frontend architecture and performance: built a reusable Next.js + Strapi template that powers about 10
production sites and raised Lighthouse performance scores from ~45 to 85–90. Migrated a large ticketing CRM frontend
from jQuery/Twig to React and Next.js, owning the Stripe-based checkout and payment flows. Also builds REST APIs with
Node.js and NestJS on PostgreSQL (Supabase, Prisma), and has 3 years of React Native experience for iOS and Android.

TECHNICAL SKILLS
Frontend: React, Next.js (App Router, SSR, SSG), TypeScript, JavaScript (ES6+), HTML5, CSS3, Tailwind CSS, Material
UI, Framer Motion
State & Data: Redux, Redux Observable, Apollo Client, GraphQL, REST APIs, React Hook Form
Architecture & Performance: Micro Frontends, Core Web Vitals, code splitting, lazy loading, virtualization
CMS & Payments: Strapi, Payload CMS, Stripe
Backend: Node.js, NestJS, Python, PostgreSQL (Supabase, Prisma), MySQL
Mobile: React Native (iOS & Android), Xcode, Android Studio
Testing: Jest, React Testing Library
DevOps & Tools: Vercel, Railway, AWS S3, Docker, Git, Jira, Figma, SonarQube
AI-assisted development: Cursor, Claude Code, MCP

PROFESSIONAL EXPERIENCE
Senior Software Engineer, Favbet 06/2024 – Present
• Architect and maintain the company's corporate website, partner portal and promotional landing pages for marketing
campaigns, built on Next.js (App Router, SSR, SSG), React, TypeScript and Tailwind CSS.
• Built a reusable Next.js + Strapi site template that became the foundation for about 10 production sites, letting
non-technical staff manage content through custom CMS dashboards.
• Designed Strapi content models and connected them to Next.js frontends through REST APIs, keeping data contracts
between the CMS and the UI consistent across projects.
• Raised Lighthouse performance scores from ~45 to 85–90 by improving Core Web Vitals through image optimization,
code splitting and lazy loading of pages and media.
• Build REST APIs and backend features with Node.js, NestJS and Python, reducing handoffs between the frontend and
backend teams.
• Set up deployment workflows on Vercel and Railway and integrated AWS S3 for media storage.
• Cover new features with unit and integration tests (Jest, React Testing Library).
• Review code, onboard new team members, and take part in sprint planning, estimation and production debugging.
Team: 1 PM, 1 TL, 3 FE, 2 BE, 1 QA
Tech: Next.js, React, TypeScript, Tailwind CSS, Strapi, Payload CMS, Node.js, NestJS, Python, AWS S3, Docker, Vercel, Railway, Jest,
React Testing Library, Git, Figma, Jira

Frontend Developer, Deloitte 05/2022 – 06/2024
• Migrated the frontend of a large ticketing CRM platform from jQuery and Twig to React, preserving complex business
logic while improving maintainability.
• Fully owned ticket checkout pages and payment forms, integrating Stripe into multi-step booking flows.
• Moved part of the legacy Twig rendering to server-side rendering with Next.js, with content loading progressively on
scroll.
• Built an MVP for hotel booking by reusing CRM components, and handled complex async flows in payment and
booking journeys with Redux Observable.
• Optimized heavy data tables with pagination and virtualization.
Team: 1 PM, 2 TL, 4 FE, 2 BE, 2 QA, 1 DevOps
Tech: React, Next.js, TypeScript, Redux Observable, React Hook Form, Stripe, REST APIs, Figma, Jira, Git

Frontend Developer, Yozmatech 03/2020 – 04/2022
• As the sole frontend developer, built core modules of a corporate communication and work-management platform,
including interview scheduling, employee availability, time-off, vacation and maternity-leave calendar workflows.
• Built cross-platform mobile features with React Native for iOS and Android alongside the web client.
• Built interactive employee profile pages (Framer Motion) and contributed to a micro-frontend architecture integrating
GraphQL APIs.
Team: 1 PM, 1 Designer, 1 FE, 1 BE
Tech: React, React Native, TypeScript, GraphQL, Apollo Client, Node.js, Material UI, Micro Frontends, Framer Motion, Figma, Jira,
SonarQube

Frontend Developer, TechHunt 09/2018 – 01/2020
• Built a banking investor platform for Raiffeisen Bank Aval, enabling streamlined communication between bank
managers and investors.
• Developed the admin panel and cross-platform mobile components, and implemented a calendar system for
investor-manager meeting scheduling.
• Integrated the frontend with backend microservices via REST APIs.
Team: 1 PM, 2 FE, 2 BE, 1 QA
Tech: JavaScript, React, Redux, React Native, Material UI, REST APIs, Jira, Git

EDUCATION
Associate Degree, Chernivtsi Cooperative Professional College of Economics & Law 2017 – 2020

LANGUAGES
English: Upper-Intermediate (B2) | Ukrainian: Native