Dmitro

DMYTRO GOLOVASCHUK
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Full Stack Developer (React/Next.js/ReactNative + Node.js) Ukraine, Zhytomyr

PROFESSIONAL SUMMARY
Fullstack developer with 3+ years of commercial experience building production web and mobile applications with React, Next.js,
and Node.js. Hands-on production experience with the Next.js App Router, including SSR, SSG, and ISR rendering strategies. Uses
AI coding agents (Claude, Cursor) as part of the daily development workflow - generation, refactoring, and PR review - always
with careful validation before merge. Delivered 5+ end-to-end products from scratch, with experience across the full stack -
architecture, backend, deployment, and AI feature integration (OpenAI SDK, Vercel AI SDK)

SKILLS

• Frontend: React.js, Next.js (App Router, SSR/SSG/ISR, API Routes), Vite, Tanstack Start, Astro
• Backend: Node.js, Express.js, Nest.js, tRPC, REST, JWT
• Databases: PostgreSQL, MongoDB, MsSQL, SQLite3, Prisma ORM
• AI Integration: OpenAI SDK, Vercel AI SDK, Claude
• Cloud & DevOps: AWS, Vercel, Render, GitHub Actions (CI/CD)
• Mobile: React Native (CLI + Expo), AppStore Connect, Google Console
• State & Tools: Redux, Zustand, Tanstack Query, Turborepo, Figma, Postman
• Languages: Ukrainian - Fluent, English - Intermediate

WORK EXPERIENCE

Fullstack Developer - VISO Software 2024 - Present
• Built 2 products (Next.js, Nest.js, React Native) in a Turborepo monorepo with shared types
• Raised marketing pages' Lighthouse score from ~60 to 90+ (desktop) / 85-90 (mobile) and LCP from ~3.5s to ~1.8s via
SSG/ISR, next/image and a smaller JS bundle.
• Designed stateless Nest.js backend on AWS (ECS/EC2, RDS PostgreSQL, S3 + CloudFront, CloudWatch); k6 load-tested at
300-500 concurrent users / 50-100 req/s, ~99.9% production uptime.
• Shipped 2 AI features to production (context-aware chat with streaming, automated summaries) via OpenAI and Vercel AI
SDKs, cutting a 10-15 min workflow to 2-5 min for 50-100 active users.

React Native Developer (Expo) - Pinta Webware 2023 - 2024
• Migrated legacy React Native app to Expo, reducing build size by ~20% and startup time by ~1.2 sec.
• Shipped AR, 3D, and Maps features with 60fps animations.
• Reduced redundant API requests by ~30% with TanStack Query.
• Mentored junior developers on React Navigation and i18n.

JavaScript Developer - Freelance 2022 - 2023
• Delivered 5+ client projects end-to-end (React.js frontend, Express.js backend, PostgreSQL/SQLite3 databases), building
design-to-deploy workflows from Figma to AWS.
• Implemented JWT authentication and REST API design patterns that became the reusable baseline for subsequent client
projects.
• Built two React Native CLI apps from scratch with map integrations and Firebase analytics, delivering on schedule within
a 6- month engagement.
• Configured Firebase event tracking that gave the product team visibility into key user funnels from day one of launch.

EDUCATION
Computer Academy ITStep - Software Development 2018 - 2022