Всеволод

IVANOV VSEVOLOD
FULL-STACK SOFTWARE ENGINEER • React / Next.js / TypeScript / NestJS
Zaporizhzhia, Ukraine | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | github.com/HESYSS |
myspace.in.ua | for.net.ua

PROFESSIONAL PROFILE
Full-Stack Developer with 2+ years of commercial experience building and delivering real-world web products.
Combines hands-on React / Next.js engineering with backend development in Node.js / NestJS, PostgreSQL, and API
design. Has independently owned products from requirements and architecture through integration, deployment,
and ongoing improvements; also delivered complex subscription billing, access-control rules, data pipelines, and
mobile workflows. Effective in both solo ownership and cross-functional teams, with a practical focus on reliable
systems, maintainable code, and business outcomes.

TECHNICAL EXPERTISE
Frontend: React, Next.js, React Native / Expo, TypeScript, JavaScript, React Server Components, SSR / SSG / ISR,
responsive UI, Redux Toolkit, Zustand, TanStack Query.
Backend: Node.js, NestJS, REST APIs, Django REST Framework, authentication, RBAC, payment subscriptions,
webhook integrations, background jobs, data processing.
Databases & infrastructure: PostgreSQL, PostGIS, Prisma, MongoDB, Docker, Nginx, PM2, AWS S3, Firebase, Git.
Product & workflow: technical SEO, metadata / Open Graph, multilingual interfaces, CRM integrations, AI-assisted
development (OpenAI Codex, ChatGPT), cross-functional collaboration.

PROFESSIONAL EXPERIENCE

Halo Lab SL — Full-Stack Developer, Independent Contractor | Apr 2026 – Oct 2026
Delivered features across several client products in collaboration with PMs, designers, QA and frontend/backend
engineers.

Real-estate agent discovery & subscription platform | React / React Native Web · NestJS · Prisma ·
PostgreSQL
Built advanced agent discovery, multi-criteria filters, comparisons, and public profiles, improving the product’s
search and profile experience.
Implemented shareable profile pages with dynamic metadata, canonical URLs, and Open Graph previews.
Owned the Paddle subscription integration end-to-end: checkout, signed webhooks, resilient event handling,
cancellation/resumption and backend authorization based on billing state.

Field-service mobile application (pre-release) | React Native · Expo
Built workflows to submit field-service attempts and synchronize local changes and photos with resilient retries,
persistent operation identifiers, and recovery after app restarts.

Confidential Full-Stack Project | Django REST Framework
Contributed data-discovery and progress APIs, authentication checks, and versioned compliance
acknowledgements in a regulated workflow.

Microfinance Platform — Full-Stack Developer, NDA Contract | Feb 2026 – Mar 2026
Developed React / TypeScript interfaces and Node.js services for financial-document workflows, dynamic forms,
validation, formula recalculation, and PDF previews/downloads.

Outsource Software Agency — Full-Stack Developer | Jan 2025 – Dec 2025
Acted as primary full-stack engineer for client products, taking ownership of architecture, implementation,
integrations, and production delivery.

MySpace — Real-Estate Web Platform | Jun 2025 – Dec 2025
Delivered a production Next.js real-estate platform independently, from initial requirements and application
architecture to production deployment.
Developed SEO-oriented property pages with server rendering, multilingual routing, dynamic metadata and
Open Graph previews.
Built property discovery and map filters backed by NestJS and PostgreSQL / PostGIS geospatial queries;
integrated external CRM data feeds.
Configured deployment infrastructure using Docker and Nginx and supported production delivery.

Fornet — E-Commerce Platform | Mar 2025 – Jun 2025
Implemented catalog, inventory, pricing, and administration features across frontend and backend, including
role-based REST APIs and access permissions.
Designed automated import workflows processing 10,000+ daily SKU updates to keep catalog and inventory
information current.

Additional client work
Developed Telegram bots, scraping / automation utilities, and supporting services for varied product needs.

Enterprise Data & Media Platform — Full-Stack Developer, NDA | Dec 2023 – Sep 2024
Created data collection, normalization, and validation pipelines processing 50,000+ external records per day,
with admin views to track processing status and errors.
Implemented asynchronous media-preview generation and frontend workflows for upload, processing states,
and preview readiness.

PROJECT HIGHLIGHTS
MYSPACE • Real estate discovery platform | myspace.in.ua
FORNET • E-commerce platform and automated catalog operations | for.net.ua

EDUCATION
National Technical University “Kharkiv Polytechnic Institute” | Computer Engineering and Programming | Sep
2021 – Jun 2025