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Andrii Pervashov
Frontend Developer (React)
[open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | Košice, Slovakia

SUMMARY
Frontend Developer with 4+ years of hands-on experience building responsive, user-centric web applications with React.js,
TypeScript, and modern JavaScript across fintech and SaaS products.
Skilled at translating wireframes and visual designs into accessible, cross-browser interfaces; comfortable working closely with
UI/UX designers, backend engineers, and product managers in fully remote, distributed teams.
Delivered performance-focused features including a real-time analytics dashboard, a GraphQL data layer that cut API payload
size by 20%, and a custom React table builder that cut processing time by 90%.
Experienced integrating REST/GraphQL APIs and third-party services, writing clean and well-documented code, conducting
code reviews, and mentoring junior engineers; certified in Building with the Claude API (Anthropic).
SKILLS
Frontend: React.js, JavaScript (ES6+), TypeScript, Redux Toolkit, Next.js, HTML5, CSS3, SCSS, TailwindCSS, Material UI
Frontend Practices: Responsive Design, Accessibility (a11y), Cross-Browser Compatibility, Performance Optimization,
Component Architecture
Testing & Quality: Jest, React Testing Library, Code Reviews, Debugging, Performance Tuning
APIs & Integration: REST API, GraphQL, WebSockets, OpenAPI, JWT, Okta, Salesforce API, Shopify APIs
Backend (Working Knowledge): Node.js, Express, Nest.js, Fastify, Python, PostgreSQL, MongoDB
Tools: Git, GitHub Actions, CI/CD, Docker, Figma, AWS, Azure, Redis
AI Tooling: Claude Code (1yr), Cursor (2.5yr), Codex (3yr)
Languages: English, Ukrainian, Slovak
EXPERIENCE
Full-Stack Software Engineer (Frontend-Focused) Jun 2025 – Present
INSART — Fintech / Alternative Investments (2 products, teams of 3 and 15) New York, United States (Remote)
• Reduced document processing time by 90% (10 min → 1 min) by designing and building a custom, reusable React table
component with dynamic filtering, sorting, and inline editing.
• Expanded the investment platform’s UI with end-to-end support for joint transactions, building interactive React views with
parent-child tracking for multi-leg investments.
• Collaborated closely with designers, backend engineers, and product managers in a distributed remote team to translate
wireframes into responsive, cross-browser interfaces.
• Improved application performance and reduced operational costs by $5k/month by implementing user-controlled
cancellation for long-running frontend-triggered executions.
• Contributed to engineering hiring and code review culture by screening 20+ candidates, designing technical interview
questions, and providing written hiring recommendations.
Frontend Software Engineer Oct 2022 – May 2025
SmartFlowLabs — Shopify SaaS Agency Quebec, Canada (Remote)
• Built a dynamic, React-based cart rule engine for merchant-defined stock, payment, and shipping conditions, lifting average
order value by 8% and cutting checkout-related support tickets by 80% across 250+ merchants.
• Engineered gamified, accessible exit-intent UI components (Spin Wheel, Pick-a-Gift) with custom trigger logic, driving a
22% increase in email/SMS capture and a 17% drop in cart abandonment across 300+ Shopify stores.
• Designed and built a scalable A/B testing framework with feature-flagging and a real-time React analytics dashboard,
boosting conversion rates by 23% and cutting experiment setup time from 2 days to 2 hours.
• Shipped post-purchase upsell UI flows powered by purchase-history-based recommendations, raising average order value by
12% and improving offer acceptance rate by 7%.
• Migrated REST endpoints to a GraphQL data layer for all frontend applications, cutting API payload size by 20% and
eliminating overfetching, while improving cross-browser reliability and load performance.
EDUCATION
Technical University of Košice Košice, Slovakia
Master’s Degree in Computer Science 2025 – 2027
Technical University of Košice Košice, Slovakia
Bachelor’s Degree in Computer Science 2022 – 2025