Hire the Best Ext JS Specialists
in Romania

My name is Ionut. I am a Romanian programmer. I have more than 10+ years of work in developing web and desktop applications. I know 10+ programming languages, advanced algorithms, and math experience, and also I was a 5 star and level 2 fiver developer until I gave up working for Fiverr. Thank you, and I hope we will have a successful collaboration!

As an accomplished IT professional with a wealth of experience, I bring a robust skill set to the table for your coding needs. My specialization lies in crafting resilient and scalable web applications, harnessing cutting-edge technologies. I excel in the configuration of Symfony or Laravel websites using Ansible and Docker, ensuring seamless deployment with Apache or Nginx on both budget-friendly and high-performance VPS platforms. Additionally, I've successfully developed several mobile applications using REACT and Javascript. If you require a complimentary Jira or Confluence environment for your team or your very own mail server, I can swiftly set that up for you. Furthermore, I'm adept at configuring the formidable CSF firewall on your VPS account to safeguard our work. I can also provide scripts for automated database backups using private and public keys, delivering them to your email or other designated devices. My commitment to learning is unwavering, making me a proactive investigator of emerging technologies pertinent to your projects and future endeavors. I trust that you'll discover in me a devoted asset, a adept problem solver, and a diligent team member, dedicated to ensuring smooth and productive workdays.

I'm a full stack JavaScript developer. I have experience working with ReactJS and NodeJS. I'm familiar with the WebExtensions API and I've created a lot of browser extensions. I'm also a Java developer and I'm familiar with the Android SDK.

Full stack software engineer mastering: NodeJS, MySQL, Redis, MongoDB, AWS services for backend and HTML5, CSS3 and Javascript ( reactjs ). I am able to build complex architectures with NodeJS, RestAPI(Express, Koa, Fastify) and GraphQL, MySQL, MongoDB, PostgreSQL, Redis, AWS Services like S3, Cloudfront, SQS, Lambda, API Gateway, Elasticsearch etc. I am very familiar using tools like: Typescript, BabelJS, Webpack, Grunt, Gulp. I can implement various services using serverless architecture with API Gateway, S3, Lambda. Strong experience in optimising MySQL queries and structures.

Senior Design Engineer and Chrome Extension Specialist with 9+ years of experience shipping high-craft, performance-driven web products. Currently working as a Fullstack Design Engineer, while helping select clients build, polish, and launch complex frontend systems and browser extensions. If you need someone who understands pixel-perfect UI/UX craft, browser architecture mechanics, and production backend execution, you’re in the right place. 🧩 CHROME EXTENSION ENGINEERING (17+ SHIPPED | 100% 5-STAR) Building extensions isn't just about writing JavaScript. It’s about navigating browser APIs, Manifest V3 restrictions, DOM isolation, and strict Web Store security audits. • Manifest V3 Expertise: Service workers, offscreen documents, side panels, declarativeNetRequest, and declarative content. • Complex UI Injections: Shadow DOM isolation, floating overlays, context-aware inline widgets, custom sidebars without CSS leakage. • Real-Time & Sync: WebSockets, OAuth2 / SSO authentication, background data syncing, cross-tab state management. • Store Publishing: End-to-end preparation, Chrome Web Store compliance, friction-free security review approvals, and automated updates. 🎨 DESIGN ENGINEERING & FRONTEND ARCHITECTURE I bridge the gap between Figma and production code, ensuring animations feel fluid, design tokens stay clean, and bundles stay light. • Frontend Stack: React, Next.js, Vue 3, Nuxt, Svelte, Angular, TypeScript, Tailwind CSS, Framer Motion • UI/UX Craft: Micro-interactions, accessible UI components (Radix/Headless UI), responsive layout orchestration, design systems • Frontend Performance: Code splitting, microfrontends (Module Federation), Web Vitals optimization, rendering pipeline tuning 🚀 PROVEN TRACK RECORD & CASE STUDIES • Digital Turbine: Architected microfrontends with Module Federation, slashed bundle sizes 6X, driving a 33% CTR lift and $2.4M annual revenue increase. • Devyce: Led VoIP softphone extension & web app engineering with 50,000+ concurrent WebSocket connections, powering 500% user growth in 2 months. • CaseLib: Built legal SaaS end-to-end featuring full-text search across 9M+ documents with sub-300ms response times. • 17 Chrome Extensions: Designed, engineered, and published 17 extensions on Upwork across e-commerce, AI assistants, sales tools, and productivity workflows. ⚡ HOW I DELIVER (AI-AUGMENTED EXECUTION) • 2-4 Week Sprints: Leveraging AI-augmented workflows (Claude Code, agentic automation) to ship in weeks, not months. • Full-Stack Depth: Backends in Node.js, NestJS, FastAPI, PHP, PostgreSQL, GraphQL so your extension or frontend seamlessly integrates with any backend. • Reliable Async Partner: Clean code, daily/weekly updates, clear documentation, zero ghosting. 📩 LET'S CONNECT Ideal for projects $5,000+, full product builds, extension MVPs, UI design system implementations, or rescues. Send a message with your project vision or Figma links. Happy to discuss scope, feasibility, and technical strategy before you commit.

Welcome to My Upwork Profile! I'm Titus Boga, a web developer specializing in full-stack web applications and scalable SaaS solutions. Education & Background I began my programming journey in high school with C/C++ and pursued a degree in Computer Science, laying a strong foundation in software development and engineering. My experience spans over 4 years, moving from low-level C/C++ programming to a focus on building modern web applications. Professional Experience I’ve developed SaaS applications and full-stack solutions that integrate user-friendly frontends with robust backends and scalable infrastructure. Developed two major SaaS applications, involving React, Next.js, Node.js, MongoDB, and MySQL. These projects included integrating secure user authentication, payment systems with Stripe, and managing real-time email notifications. Hands-on experience in server administration, including deploying applications on Linux servers (Ubuntu, Gentoo, CentOS), using Docker to containerize and migrate services, and implementing secure networking with IKEv2 and OpenVPN. Prior work involved C++ for projects utilizing communication protocols like Bacnet and Modbus, managing embedded systems, and optimizing software for multi-environment deployment. Web Development Expertise Frontend Development: Proficient in React and Next.js to create responsive and engaging UIs. Backend Development: Skilled in Node.js and Java, building scalable APIs and server-side applications. Databases: Experience with SQL (MySQL) and NoSQL (MongoDB) to ensure optimal storage solutions. Full-Stack SaaS Development: Complete lifecycle expertise—from concept to deployment—focused on user experience and reliability. Technical Skills Summary System Administration & Networking: Proficient with Linux environments, Docker, and secure network configurations. Complex Protocols & Embedded Systems: Extensive work with Bacnet, Modbus, and IoT protocols, including migrating embedded software to server infrastructures. API Integrations: Successfully integrated third-party APIs such as Stripe for payments and email systems for notifications. Why Work With Me? With my diverse background—from system-level programming to modern web development—I offer an integrated approach that guarantees reliability, scalability, and security. I am currently building my freelancing profile, and I'm eager to deliver top-quality work at competitive rates to establish a strong reputation. Let’s collaborate to bring your web application vision to life—whether you need a full-stack developer, help with SaaS architecture, or integration expertise. Feel free to reach out, and let’s make it happen!