Francesco Popescu

Rome, Italy

Hi! there 馃憢 I'm Francesco, a Staff Full Stack Developer from Rome, Italy.

Since 2017, he has focused on creating superior React applications for high-traffic services using leading-edge solutions.
Most of my work consists of leading technical teams, creating an efficient development environment, fixing technical debts, providing best practices, and mentoring developers.
I have delivered a range of products, including front-end architecture for scalability, design systems for global branding across several apps, and launching new applications for startups.

Skills:
HTML, CSS, JavaScript, Typescript, Next.js, React, State Management, Tailwind, Node.js, NestJS, Python, Redis, GraphQL, CI/CD, Git, Docket, Kubernetes

Professional Experience

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Backend Engineer

Intelligems Technologies 路 2024 - 2025

As the first full stack engineer, I helped bring a digital asset management SaaS platform from concept to production.

Booking System

  • Engineered scalable Django APIs for a high-load booking system (1M+ requests/day), supporting microservices architecture.
  • Managed end-to-end containerization with Docker and Kubernetes, reducing infrastructure setup time by 50%.
  • Implemented Redis-based job queues and smart caching, boosting performance and system resilience.
  • Monitored and resolved bugs in the backend pipeline, and supported frontend fixes (Angular).
  • Collaborated on building CI/CD pipelines using GitHub Actions, enabling automated testing, linting, and deployment across staging and production environments.
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Senior Frontend Developer

Crypto Hunters 路 2022 - 2024

At Crypto Hunters, I drove the entire frontend stack of a blockchain-integrated AR gaming platform, merging Web3, gaming, and real-world events.

Marketing Website

  • Spearheaded the frontend architecture and implementation of a blockchain-integrated play-to-earn AR gaming platform, delivering seamless experiences across live events, CRH asset tracking, and player onboarding.
  • Built and optimized a high-performance, SEO-compliant website using Next.js, TypeScript, and SCSS, ensuring cross-browser compatibility, accessibility (WCAG 2.1), and mobile-first responsiveness.
  • Designed and maintained a scalable, reusable React component library, enabling rapid UI development and consistent UX across the company鈥檚 dApp and marketing interfaces.
  • Integrated custom authentication flows and web3 wallet connectivity (MetaMask) to support secure user actions, including asset management and gameplay access.
  • Collaborated closely with backend, blockchain, and product teams in agile sprints to deliver features on time and improve user engagement KPIs across multiple releases.
  • Oversaw code quality through thorough code reviews, CI-integrated linting/testing, and adherence to scalable design principles and performance budgets.
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Senior Frontend Developer | Problem Solver

Midas Solutions LTD 路 2020 - 2022

Led frontend development across multiple Web3 products including an NFT marketplace and a DeFi platform with CEX integration.

NFT Marketplace

  • Led the frontend engineering of a high-traffic NFT marketplace using React.js, Typescript, and Web3.js, integrating fully with MetaMask for minting, bidding, and wallet-based authentication.
  • Designed a smart contract data sync layer by integrating IPFS and on-chain metadata into MongoDB, drastically improving loading speed and platform responsiveness under heavy traffic.
  • Built reusable UI components with React to support dynamic NFT listings, filtering, bidding logic, and user dashboards.
  • Developed AWS Lambda functions to fetch, normalize, and expose NFT metadata via custom APIs for frontend consumption.
  • Launched and scaled the platform to 50,000+ users in the first month, contributing to high user retention through performance-focused engineering and UX polish.

DeFi Platform (CEX Integration)

  • Delivered core frontend architecture for a DeFi staking and yield farming platform supporting multiple EVM-compatible chains.
  • Integrated secure wallet authentication and smart contract interactions using ethers.js, handling token swaps, LP staking, and reward withdrawals.
  • Optimized Web3 data flow by batching on-chain calls and caching key contract states, improving dashboard performance by 40%.
  • Set up and maintained a CI/CD pipeline using GitLab CI, automating test, build, and deployment flows for production releases across multiple environments.
  • Collaborated with blockchain engineers and product teams to align UX design with DeFi mechanics and contract behavior.
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Full Stack Developer

Hilo Labs 路 2017 - 2020

As the first full stack engineer, I helped bring a digital asset management SaaS platform from concept to production.

SaaS platform

  • Developed and launched a responsive web application from the ground up, working closely with designers and backend engineers to deliver a production-grade SaaS platform for managing digital assets.
  • Engineered intuitive, conversion-oriented user flows for depositing and managing assets, conceptually similar to checkout and dashboard systems found in e-commerce platforms.
  • Implemented a scalable GraphQL data layer to efficiently query and render dynamic user data in real time, enhancing UX and reducing frontend load times.
  • Built reusable UI components with React, integrating them with backend APIs and external data sources to ensure consistency and maintainability across the application.
  • Contributed to both frontend development (React, Typescript, SCSS) and backend integration, bridging product logic with database interactions.
  • Focused on performance optimization, accessibility, and mobile-first responsiveness, ensuring a seamless user experience across devices.