Артем

Artem Volok
FRONTEND / FULL-STACK DEVELOPER | REACT NATIVE | EXPO | REACT

PROFILE
React Native developer with 4+ years of commercial experience building mobile and
web products for international clients. Strong in React Native, Expo and TypeScript:
Expo SDK upgrades, a migration from bare React Native to Expo with the New
CONTACT Architecture, StoreKit 2 and RevenueCat subscriptions, HealthKit / Health Connect,
Budapest, Hungary
Mapbox, push notifications and App Store / Google Play releases. Builds on Firebase
[відкрити контакти](див. вище в блоці «контактна інформація») and Supabase, and ships the web side in React and Next.js. After 20+ client products,
[відкрити контакти](див. вище в блоці «контактна інформація») looking to go deep into one product with a long-term team.
[відкрити контакти](див. вище в блоці «контактна інформація»)
EXPERIENCE
WORK STATUS
Viso Software Jun 2024 - Present
Open to remote, hybrid or on-site Frontend / Full-Stack Developer
Employment contract or B2B
Outsourcing company. · Remote
KEY STACK Delivered 20+ client products in healthcare, edtech, social, marketplaces and travel
across web and mobile, in teams of up to 6 engineers or as the sole developer
React Native & Expo (Router, EAS,
config plugins)
communicating directly with clients in English.
New Architecture & SDK upgrades Location-based social voting app (~14 months, team of 5): built map features
In-app purchases (StoreKit 2, with Mapbox, including an H3 hexagon heatmap, pins, animations and rendering
RevenueCat) performance improvements.
HealthKit / Health Connect Contributed to offline mode: cached topics, persisted votes and WebSocket
Mapbox & offline mode reconnection.
Firebase & Supabase
Upgraded the app from Expo SDK 51 to 54 (React Native 0.74 -> 0.81, React 19)
Push notifications (FCM) & deep
and added an iOS App Clip, email-verification deep links and AI-assisted topic
links
App Store / Google Play releases creation.
Health & wellness apps: migrated a production mental-health app from bare React
LANGUAGES Native to Expo with the New Architecture, including custom config plugins and a
English - B2 move to StoreKit 2 for in-app purchases.
Daily written and spoken Co-led a medication tracker on Expo and Supabase: Apple HealthKit / Android
communication with international Health Connect sync, PDF health reports, dose reminders and subscriptions.
clients Built a medication-reminder app as the sole developer with in-app subscriptions and
Ukrainian - Native actionable notifications; handled App Store reviews and rejections.
Built most mobile apps on Firebase: authentication (email with verification, phone
TECHNOLOGY
OTP, Google, Apple), Firestore data models, Cloud Storage for files and photos,
MOBILE: Cloud Functions and push notifications via FCM.
React Native, Expo (Router, EAS, Services marketplace (client and provider apps): orders, offers, calendar and FCM
config plugins), New Architecture,
push notifications on iOS and Android.
Reanimated, Mapbox, HealthKit /
AI travel companion: voice input with simultaneous speech-to-text and audio
Health Connect, push notifications
(FCM), App Store / Google Play recording, a live volume visualizer and a full auth flow (email, phone OTP, Google,
releases Apple).
AI exam-preparation platform (React, Node.js / Express, PostgreSQL):
FRONTEND:
Gemini-based answer scoring and practice-question generation, in-browser voice
React 18/19, Next.js 15/16 (App
Router), TypeScript, Vite, TanStack
recording, Stripe subscriptions and webhooks, JWT-based single sign-on.
Query, Zustand, Redux Toolkit, Freelance (direct client) Aug 2026 - Present
React Hook Form, Zod, Tailwind Freelance Frontend / Mobile Developer (part-time)
CSS, shadcn/ui, MUI
Subscription platform with web and mobile apps. · Remote
BACKEND & DATA: Shaped the product with the client: requirements, user roles (client, beekeeper,
Firebase (Auth, Firestore, Storage, manager) and delivery milestones, working alongside a backend developer.
Cloud Functions, Cloud Messaging),
Built the Next.js web frontend and an Expo mobile app at feature parity with web:
Node.js, Express, REST APIs,
role-based navigation, photo uploads via signed URLs, on-device PDF certificates,
WebSockets (Socket.IO),
PostgreSQL, Supabase (Auth,
Excel export, Google and Apple sign-in.
Storage, Edge Functions), Freelance (direct client) Feb 2025 - Jul 2025
MongoDB
Freelance Frontend Developer (part-time)
PAYMENTS: Telegram Mini Apps (TON). · Remote
Stripe (subscriptions, Checkout, Built a real-time auction Mini App on React and Socket.IO with TON / USDT top-ups
webhooks, coupons), RevenueCat, via TON Connect, and a token launchpad web app with live candlestick charts.
StoreKit 2, TON Connect

AI: Crypto startup Aug 2023 - Oct 2023
OpenAI and Gemini APIs, structured Frontend Developer (part-time)
JSON output, prompt design, Remote
AI-assisted development (Claude Set up the frontend architecture and built a token creation and tracking web app
Code, Cursor, Codex, Copilot)
with React, TypeScript and MUI.
CLOUD:
Vercel, Replit Deployments, AWS
ABCloudz Mar 2022 - Jun 2023
S3, Google Cloud
Frontend Developer
International software company. Joined as an intern in Jul 2021.
TESTING:
Built product features in React and TypeScript in a team of four frontend developers
Manual functional and regression
working alongside backend and DevOps engineers.
testing of features before release,
on real iOS and Android devices Handled debugging and functional testing of new features before release.
and in the browser; debugging
ALSO WORKED WITH
(TASK-LEVEL):
NestJS, Prisma, tRPC, Docker,
AWS ECR, SignalR, Swift / SwiftUI

EDUCATION
M.Sc. Software Engineering
National Aerospace University
"Kharkiv Aviation Institute"
(2024)
B.Sc. Software Engineering
National Aerospace University
"Kharkiv Aviation Institute"
(2022)