Денис

Denys Nyzhehorodtsev
Senior Frontend / Fullstack Engineer

Country: Ukraine LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація») Scan for LinkedIn
Phone: [відкрити контакти](див. вище в блоці «контактна інформація») Website: svgforce.dev
Email: [відкрити контакти](див. вище в блоці «контактна інформація») Telegram: @shtrobnik

PROFESSIONAL SUMMARY

Senior Frontend / Fullstack Engineer with 10+ years of experience building scalable, high-performance web applications,
including 5+ years with React. Strong expertise in React, Next.js, TypeScript, frontend architecture, performance optimization,
and product development. Founder of SVGForce — a SaaS product for SVG optimization and component generation. Built and
own the product end-to-end, covering frontend, backend (Node.js with Fastify), PostgreSQL database design, authentication,
billing systems, admin tools, and cloud file storage. Focused on building production-ready systems with clean architecture and
scalability in mind.

TECHNICAL SKILLS

Frontend Frontend Engineering
React, Next.js, TypeScript, JavaScript, Redux, MUI, Frontend Architecture, Component Architecture,
HTML5, CSS3, Sass Performance Optimization, Responsive Design, Cross-
browser Compatibility, SEO

Backend Experience Database & Storage
Node.js, Fastify, REST API, JWT, OAuth, API Integrations PostgreSQL, Prisma ORM, Cloudflare R2 Object Storage

Product / SaaS Tools
Billing Logic, Subscriptions, Admin Panels, Analytics, Git, Figma, Docker basics, CI/CD basics
Access Control

PROFESSIONAL EXPERIENCE

Founder & Product Engineer — SVGForce 2025 – Present
SaaS product for SVG optimization and component generation for modern frontend workflows.
Built and launched SVGForce, a SaaS product that converts and optimizes SVGs into reusable components.
Designed and built the product from scratch, owning architecture, UI/UX, frontend, backend, and core generation logic.
Developed advanced SVG features such as multicolor support, gradients, animations, and dynamic component generation.
Implemented authentication, access control, pricing logic, subscription-based monetization, and billing flows.
Built backend functionality using Node.js with Fastify and PostgreSQL with Prisma ORM.
Integrated Cloudflare R2 Object Storage for storing SVG assets, while keeping file metadata and storage keys in the
database.
Developed an admin panel for managing users, subscriptions, pricing plans, analytics, and manual subscription
adjustments.
Implemented payment provider switching between Paddle and Polar directly from the admin panel without requiring
deployment.

Senior Frontend Engineer — Voll 2024 – 2025
Sole frontend engineer building the rz-playex platform from scratch using Next.js.
Built the rz-playex platform using Next.js (React) as the sole frontend developer.
Designed and implemented frontend architecture from scratch.
Collaborated directly with backend engineers and stakeholders to deliver a production-ready product.
Ensured high performance, SEO optimization, and responsive UI across devices.
Integrated APIs and contributed to product-level technical decisions.
Software Engineer (Frontend) — Freelance Mar 2022 – Present

Delivered scalable React/Next.js applications for international clients, focusing on performance, scalability, and clean
architecture.
Designed reusable component systems and maintained clean application architecture.
Integrated APIs and delivered production-ready features.
Worked directly with stakeholders to translate business requirements into technical solutions.

Frontend Developer — ALLO Oct 2021 – Mar 2022
Internal inventory management system.
Developed frontend functionality for an internal inventory management system.
Built user interfaces and business logic for internal operational tools.
Worked with React in production, building internal tools and user interfaces for operational workflows.

Frontend Developer — Ignited Mar 2020 – Oct 2021
Dating platform.
Developed frontend functionality using React, hooks, and component-based architecture.
Built interactive UI components and client-side application logic for a high-interaction dating platform.
Worked with API integrations and application state.
Focused on user experience, responsive UI, and frontend performance.

Frontend Developer — Century Mobile Mar 2016 – Mar 2020
Cryptocurrency-related web platform.

Developed frontend functionality for a cryptocurrency-related web platform.
Implemented UI and business logic for financial features.
Collaborated with backend developers on API integrations and data handling.
Worked on frontend ownership, architecture, and long-term maintainability.

Frontend Developer — Noosphere Ventures Sep 2014 – Oct 2015
Projects: Price.ua, Mebelini.
Worked on large-scale consumer web products including Price.ua and Mebelini.
Developed and maintained user-facing frontend features.
Improved usability, cross-browser compatibility, and frontend quality.

Frontend Developer — OWOX Nov 2012 – Apr 2014
Projects: Rozetka, Sokol.ua.

Developed frontend features for major e-commerce platforms including Rozetka and Sokol.ua.
Worked with JavaScript to implement interactive UI components.
Created responsive layouts and ensured cross-browser compatibility.

Frontend / Markup Developer — PrivatBank Nov 2011 – Nov 2012
Web platform for VIP clients.

Worked on a web platform for VIP clients.
Developed UI components and page layouts.
Contributed to secure, polished, and performance-oriented interfaces.

EDUCATION

Dnipropetrovsk National University
Computer Networks and Telecommunications
2004 – 2009