Marin Begic
Verified Expert in Engineering
JavaScript Developer
Split, Croatia
Toptal member since June 6, 2016
Marin specializes in Chrome extension development and automation. For the past 10 years, he's worked as a full-time freelancer, developing dozens of Chrome extensions and automation systems and building several websites using mainly JavaScript-based technologies. Marin is not limited to web technologies—he has also handled electronics projects, search engine optimization, growth hacking, and affiliate marketing.
Portfolio
Experience
- Automation - 10 years
- Browser Automation - 10 years
- JavaScript - 10 years
- Web Scraping - 10 years
- Chrome Extensions - 8 years
- Affiliate Marketing - 6 years
- Artificial Intelligence (AI) - 2 years
- AI Automation - 2 years
Work Experience
Web Developer, Automation Specialist
Freelance
- Built automated bidding strategies for marketing campaigns.
- Parsed and organized data.
- Automated social networks.
- Developed a system for managing patient data for medical clinics.
- Built websites from scratch using Node.js and MongoDB.
- Scraped data.
- Automated business proceses.
- Boosted rankings on search engines by applying SEO techniques.
- Promoted mobile apps and websites with affiliate programs.
- Ran affiliate campaigns on traffic sources like AdWords, Facebook, ZeroPark, PopAds, and AdCash.
- Growth-hacked social profiles for musicians, eCommerce owners, and personal coaches.
Project History
Backers Directory
AI Automation, Web Scraping, and Chrome Extension
Chrome Extension for Salesforce
Education
Master's Degree in Computer Engineering
University of Split-Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture - Split, Croatia
Bachelor's Degree in Computer Engineering
University of Split-Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture - Split, Croatia
Skills
Libraries/APIs
Chrome API, Social Media APIs, Node.js, jQuery, GCM, Claude API, React, LinkedIn API, WebRTC, Puppeteer, Playwright
Tools
iMacros, Construct 2, Claude, Basecamp, Git, Adobe Photoshop, Microsoft Visual Studio, IntelliJ IDEA, Campfire, Webpack, Google Analytics
Languages
JavaScript, TypeScript, HTML, PHP, Java, CSS, C++, Python
Frameworks
Chrome, Bootstrap, Express.js, Android SDK, Angular, Selenium
Paradigms
Search Engine Optimization (SEO), Automation, HTML DOM
Platforms
Google Chrome, Arduino, Visual Studio Code (VS Code), Salesforce, Google Ads, YouTube, Amazon Web Services (AWS), DigitalOcean, WordPress, Android
Storage
JSON, MongoDB, MySQL, IndexedDB
Other
Automation Software, Automation Scripting, Web Scraping, Proxies, Data Scraping, Scraping, Chrome Extensions, Extensions, Web Extensions, APIs, Web Crawlers, Website Data Scraping, AI Automation, Browser Automation, Browsers, Browser Plugins, Data Fetching, Robotic Process Automation (RPA), UI Automation, Landing Pages, Affiliate Marketing, Fetch API, WebSockets, Crypto, Cryptocurrency, Web Marketing, Agentic AI, Agentic Coding, Voluum, AI Agents, AI Engineering, Full-stack Development, Large Language Models (LLMs), Cloud9, Artificial Intelligence (AI), Reverse Engineering, Supabase, Cryptocurrency Exchanges
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