Дмитро

Chernivtsi, Ukraine
Dmytro Lymarenko
Senior Full-Stack Developer | Team Lead
TypeScript • React • Next.js • React Native • Node.js • Express • GraphQL • TanStack Query • TanStack Start
• Supabase • PostgreSQL • Payload CMS • n8n • Anthropic Claude API • Docker • Python • FastAPI • Java
[відкрити контакти](див. вище в блоці «контактна інформація»)
[відкрити контакти](див. вище в блоці «контактна інформація»)
https://github.com/dmytro-lymarenko
PROFILE
Professional Summary
Senior Full Stack Engineer with 10+ years of commercial software development across B2B business
software, healthcare, e-commerce and AI-related products. 10+ years with React/Node.js and 5+ years with
TypeScript. Experienced across web, mobile, backend integrations, shared packages, testing, CI/CD, release
automation and production support.
CAPABILITIES
Technical Skills
Languages: Bash, C#, C++, JavaScript, Elixir, Flow, GDScript, Java, Kotlin, Lua, Nix, PHP, Python, Ruby, Swift,
TypeScript
UI libraries: React, React Native, styled-components, React Hook Form, Material UI, Radix UI
Libs: RxJS, Zod, Express, Axios, Formik, Yup, Zodios
Frameworks: Strapi CMS, Next.js, NestJS, Spring Boot, Angular, Expo, Vite, Expo Router, React Navigation, Node.js
Stores: Redux, Apollo Client, TanStack Query, XState, Zustand
Testing tools: Jest, Cypress, Playwright, Testing Library, React Testing Library
DB: PostgreSQL, MongoDB, MySQL, Prisma, SQLite, Drizzle ORM, Supabase
Tools: Docker, Git, Webpack, Nx, Yarn, npm, ESLint, Prettier, Fastlane, Codex, Claude
Web: HTML5, CSS, Sass, CSS Modules, Tailwind CSS
APIs / Integrations: GraphQL, Socket.IO, WebSockets, MetalPriceAPI, Cloudflare Turnstile, Branch Deep Linking
Mobile / Native: Android, iOS, React Native Firebase, React Native Push Notification, React Native Gesture Handler,
React Native SVG, AsyncStorage
Cloud / DevOps / Monitoring: Azure Pipelines, AWS CodeBuild, Firebase, Firebase Remote Config, Sentry, PostHog
Data / Visualization / Documents: amCharts, Recharts, Chart.js, Leaflet, React PDF, @react-pdf/renderer, jsPDF
React Ecosystem: React Router, React Intl, React Table, React Select, React DnD, i18next, Lingui, GrowthBook
CAREER
Professional Experience
08.2024 - 09.2026
Digitals
DFH Engine 1
Full-Stack developer
Developed an AI-assisted content-learning platform that collects evidence, generates governed LinkedIn content, and learns from human review and
performance.
Refactored the content engine into testable controllers, services, repositories, providers, and weekly workflows backed by request-scoped
dependency injection.
Built governed learning for reviews, hypotheses, experiments, suggestions, learning state, and human-approved strategy changes.
Implemented source ingestion, feed discovery, content enrichment, source management, and a secure Chrome extension for collecting and
uploading articles.
Integrated Anthropic prompts, Supabase/PostgreSQL persistence, Payload migrations, n8n workflows, Docker tooling, and automated tests.

Technologies: TypeScript, React, TanStack Start, Supabase, PostgreSQL, Payload CMS, Anthropic Claude API, Chrome
Extensions, Docker, Vitest
Healthcare Anywhere Administration Platform
Full-Stack developer
Developed an administration platform for configuring and publishing content for the Healthcare Anywhere mobile application.
Built configurable React editors and mobile-style previews for FAQs, symptoms, injections, account actions, themes, fonts, and translations.
Developed reusable screen-editor infrastructure with property panels, UI-state controls, serialization, navigation history, and multi-instance
emulation.
Implemented NestJS APIs, database entities and migrations, configuration assembly, publishing workflows, and automated tests.
Added S3/MinIO configuration storage and Docker Compose environments for the PHP API, NestJS API, MySQL, and phpMyAdmin.
Technologies: TypeScript, React, Vite, Tailwind CSS, NestJS, Prisma, MySQL, PHP, AWS S3, MinIO, Docker
Patient portal mobile app
Expo (mobile) developer
Worked on expo (mobile) project for healthcare related system
Bootstrapped the Expo mobile app with OIDC authentication, tab navigation, theming, SVG support, and main app structure.
Built patient-facing delivery, nursing, account, contact details, address editing, review, stock-days, and reschedule flows.
Implemented delivery management, authentication/session behavior, biometrics, push notifications, remote config, Sentry, and app logging.
Created Android/iOS CI/CD pipelines with Fastlane, code signing, App Store upload handling, native build fixes, tests, and release promotion work.
Technologies: Expo, React Native, TypeScript, Expo Router, React Navigation, Firebase, Sentry, TanStack Query, Fastlane,
Jest
Patient Portal Rewrite
Front-end developer
Rebuilt the legacy Patient Portal as a modern patient-facing Next.js application for prescriptions, deliveries, and account management.
Built the Next.js/TypeScript Patient Portal rewrite for prescriptions, order confirmation, stock checks, delivery tracking, and account management.
Integrated Koncile AI OCR to parse scanned patient prescriptions and extract structured data for backend workflows.
Implemented complex delivery workflows, OIDC authentication, cross-tab session handling, patient/address service integrations, and Leaflet maps.
Developed responsive accessible UI, Lingui internationalization, security headers, error handling, Sentry feedback, Firebase configuration, and Jest
coverage.
Refactored business logic into reusable hooks and view models and modernized Azure DevOps CI/CD, release validation, configuration, and
dependency upgrades.
Technologies: TypeScript, React, Next.js, TanStack Query, XState, Zustand, styled-components, Lingui, Leaflet, OIDC,
Sentry, Koncile AI OCR, Azure Pipelines
Legacy Patient Portal
Full-Stack developer
Maintained old patient portal site
Improved authentication, OTP, session recovery, logout cleanup, account switching, and session timeout behavior.
Traced legacy Java/Spring Boot backend flows, authorization, permissions, and branching logic to accurately reimplement frontend behavior.
Integrated Cloudflare Turnstile, app cache management, request cancellation after logout, and Firebase Remote Config infrastructure.
Built configurable global banners, maintenance migration UI, feature flags, and clinician/patient delivery workflow improvements.
Updated deployment tooling, Azure pipelines, API configuration, monitoring support, TypeScript setup, and build/lint stability.
Technologies: JavaScript, TypeScript, React, Redux, Redux Saga, Material UI, styled-components, Node.js, Java, Spring
Boot, Azure Pipelines, Firebase Remote Config
One Time Link
Full-Stack developer
Worked on One Time Link project for healthcare related system. The system allows patients to confirm their orders and clinicians to manage the
system.
Built and evolved the Next.js/React monorepo, shared packages, static export support, validation pipelines, and generated API clients.
Implemented patient delivery flows for login, orders, ancillaries, delivery confirmation, review, addresses, scheduling, and confirmation states.
Used MongoDB for application data persistence within the One Time Link platform.
Improved address/location handling, production error handling, Sentry/PostHog observability, feedback, banners, and mutation UX.
Maintained delivery scheduling, feature flags, dependency upgrades, CI/CD pipelines, Kubernetes-based deployments, branch promotions, and
production configuration.
Technologies: TypeScript, React, Next.js, MongoDB, Tailwind CSS, TanStack Query, XState, React Hook Form, Sentry,
PostHog, Kubernetes, Azure Pipelines

HoW Cash for Gold
Full-Stack developer
Worked on HoW Cash for Gold project which helps to find out the price of gold, silver etc and give the user ability to buy it
Built and stabilized metal pricing, quote, calculator, purity, unit conversion, and admin-managed pricing-factor flows.
Moved pricing data toward SQLite/Drizzle-backed storage with schema, migrations, seed data, API routes, and cached timeframe data.
Improved quote email templates, project tooling, admin/auth behavior, TypeScript stability, assets, and MetalPriceAPI integration.
Technologies: TypeScript, React, Vite, Node.js, Express, SQLite, Drizzle ORM, Tailwind CSS, TanStack Query,
MetalPriceAPI
08.2021 - 08.2024
Mediapress
E-Commerce websites
Front-end developer
Fast-growing global e-commerce company operating webshops across 16 countries, with distributed teams in Europe and Asia, focused on rapid
innovation and scalable technology solutions.
Integrated Strapi-managed content into ecommerce storefront pages.
Built ecommerce storefront and checkout features across cart, homepage, product pages, promotions, and product discovery.
Developed reusable responsive UI components and integrated GraphQL-backed storefront functionality.
Refactored checkout into a configurable single-page flow with customer address management and region-specific business features.
Improved type safety, build stability, error handling, localization, and feature-flagged rollout across storefronts.
Technologies: Strapi CMS, TypeScript, React, Next.js, GraphQL, Apollo Client, Material UI, React Hook Form,
GrowthBook, Jest, Docker
Community chat mobile app
React-Native developer
Worked as react-native developer by adding new features and maintining the app
Improved onboarding, registration, search, group/private chats, reporting, blocking, and leave-group flows.
Implemented push notifications, device registration, mute controls, permission prompts, deep links, and invitation links.
Introduced React Query for chat data and improved pagination, incoming messages, refresh behavior, performance, and image loading.
Expanded localization, refactored navigation/geolocation/notification handling, upgraded React Native and WebSocket dependencies, and improved
tooling.
Technologies: JavaScript, React Native, React Navigation, Redux, TanStack Query, WebSockets, Firebase Analytics,
Branch Deep Linking, React Native Push Notification, Fastlane
Builder manager
Full-Stack developer
Worked on the Synt website across the React frontend and its Java/Spring Boot backend API.
Implemented internationalization across pages, forms, tables, navigation, PDF documents, language selectors, tooling, and documentation.
Built table exports to CSV, XML, and printable PDF with column selection, date filters, and multiple business export flows.
Developed bookkeeping, financial report PDFs, reminders, mobile banking/payment redirects, document statuses, and role-based controls.
Refactored shared React components, upgraded dependencies/API integrations, and fixed table rendering, dates, PDF formatting, and reload
behavior.
Integrated frontend features with the Java/Spring Boot API and debugged backend code to diagnose and resolve cross-stack issues.
Technologies: JavaScript, Java, Spring Boot, React, Redux, Material UI, React Bootstrap, i18next, React PDF, @react-
pdf/renderer, WebSockets, AWS CodeBuild
08.2018 - 08.2021
Bizbloqs
Front-end developer
Worked on a system that provides a graphical, configurable software platform that empowers business experts to design, execute and update
solutions without the need for a programmer.
Developed the React, Next.js, TypeScript frontend with routing, SSR, authentication, session handling, API integration, and warehouse/order-
management interfaces.
Built reusable tables, forms, popups, navigation, filtering, sorting, pagination, exports, saved filters, and configurable layouts.
Improved workflow designer, helper tours, API request/caching infrastructure, user/role administration, permissions, themes, translations, and
dashboards.
Expanded Cypress/Jest/Playwright testing, modernized Nx/TypeScript/linting/CI tooling, added integrations, documentation, and fixed UI/data-
loading issues.
Technologies: TypeScript, React, Next.js, Node.js, Express, Redux, MobX, TanStack Query, Cypress, Azure Pipelines

08.2015 - 08.2018
Paperflies
Flight Search engine
Full-Stack developer
Worked on system that provides the service to search airlines tickets and build the fly path
Worked on both back-end and front-end parts of the airline ticket search and flight path application.
Built Node.js REST and GraphQL backend functionality, React frontend features, Cypress e2e tests, and Mocha unit tests.
Built a side project using Angular.
Technologies: Node.js, REST API, GraphQL, React, Angular, Cypress, Mocha
04.2015 - 08.2015
Internship
Android app for TV displays
Android Developer
Created android application for TV displays.
Technologies: Java
Website
Java Developer
Worked on a Java web application using Spring Boot.
Implemented several application pages.
Configured the Spring Boot application.
Technologies: Java, Spring Framework, Spring Boot
BACKGROUND
Education
Chernivci National 'Juriy Fedkovyc' University
Bachelor's degree, Applied Mathematics, Graduated with High Honors
September 2011 - May 2015
Chernivci National 'Juriy Fedkovyc¹ University
Master's degree, Applied Mathematics, Graduated with High Honors
September 2015 - December 2017
COMMUNICATION
Languages
Ukrainian
Native
English
B2/C1