Hire the Best Payment Gateway Integration Specialists
in Serbia

Experienced Full-Stack Web Developer with a strong background in building scalable web applications. Tech stack includes PHP (Laravel), C# (.NET), JavaScript, Bootstrap, jQuery, Git, GitLab, and Jira. Specialized in payment systems, with experience integrating 50+ payment gateways across multiple companies and platforms. API integration specialist with experience working on complex systems, including financial services and forex trading platforms. Proud creator and maintainer of steamdrops.net. Let's connect!

Hi, I’m Goran — a WordPress & WooCommerce specialist focused on urgent fixes, migrations, and store setup. If your website is down, your checkout is broken, or something “suddenly stopped working,” I can jump in fast, diagnose the real cause, and fix it safely. I also build clean, reliable WooCommerce stores and handle large product transfers end-to-end. WHAT I CAN HELP YOU WITH: Urgent WordPress fixes: Critical Error / White Screen, plugin & theme conflicts, broken layouts, update issues, 500 errors WooCommerce troubleshooting: checkout/payment/shipping problems, pricing rules, tax/shipping setup, performance bottlenecks Migrations & product imports: moving from another platform to WooCommerce, bulk imports/exports, variations, attributes, categories, images, data cleanup Store setup: new WooCommerce store setup (theme + essentials), multilingual setups, required pages, basic SEO structure HOW I WORK: Quick diagnosis (logs + conflict isolation) Fix + testing (staging when needed) Short report: what happened, what I changed, and how to prevent it I’m highly responsive (CET / GMT+1) and I keep communication simple and clear — you’ll always know what I’m doing and what the next step is. If you message me with the issue and your setup details (hosting + WordPress/Woo versions + recent changes), I’ll tell you the fastest and safest way to solve it.

I’m a developer who loves a good challenge and takes pride in delivering high-quality work. No matter the size of your project, I’ll give it my full attention from start to finish and make sure everything runs smoothly - on time and hassle-free. I work with PHP, MySQL, HTML, CSS, and JavaScript, as well as Node.js and any JavaScript-based frontend or backend framework. Whether it's building from scratch, maintaining, or optimizing, I’ve got you covered. Experienced in integrating a wide range of APIs, including Salesforce, HubSpot, PayPal, Opayo, Worldpay, Moneris, Google, Facebook, Amazon, SparkPost, Mailgun, TripleSeat, EZTexting, PrintNode, PushCrew, and more. Full-service WordPress/WooCommerce expertise, including: Consulting, development, hosting, and website setup Maintenance, optimization, and debugging Custom plugin development and theme customization Seamless integration with external services and APIs If you need someone who can figure things out and get the job done right, let’s chat! Check out my work history below for client testimonials and project samples.

I build and rescue revenue-critical e-commerce systems—especially where the storefront must stay synchronized with ERP, warehouses, physical stores, inventory, couriers, payments, invoicing, and analytics. I bring more than 20 years of continuous hands-on development. Programming has been a daily discipline for me since age 10. I am the owner and technical lead of ECOM01 DOO, the specialized Serbian software company that grew from ECOM Profit, established in 2019. ECOM01 is officially listed by BizniSoft as an integration partner, and on Upwork you work directly with me as the accountable technical lead. I can help with: • Custom B2B and B2C e-commerce systems • WooCommerce, WordPress, PHP, Laravel, and CodeIgniter 3 development • ERP/BizniSoft integrations for products, prices, inventory, customers, orders, and documents • Multi-store, warehouse, WMS/PDA, barcode, picking, packing, and stock-transfer workflows • Courier, payment gateway, invoicing, reporting, REST API, and webhook integrations • MySQL, PostgreSQL, and Microsoft SQL Server architecture and optimization • Core Web Vitals, caching, database, server, and checkout performance • Linux, Docker, deployment automation, monitoring, backups, and production troubleshooting • GA4, GTM, Meta CAPI, server-side events, and attribution connected to real business workflows Selected outcomes: • Connected an e-commerce operation with 9 stores and a central warehouse, including approvals, stock transfers, WMS/PDA, packing, and courier delivery • Reduced stocktaking from roughly 7 days to about 3 hours using 5 PDA devices integrated with ERP workflows • Helped a WooCommerce operation reach up to 450 parcels per day with 2 warehouse workers, compared with an earlier manual pace of roughly 30 parcels per day for one experienced worker I am strongest when a project has operational complexity and needs someone who understands both the code and the business process behind it. I focus on clearly scoped fixed-price work: integrations, performance improvements, legacy modernization, technical rescue, and new modules for existing systems. If the problem is not fully understood yet, start with a paid diagnostic milestone. I will map the current flow, identify the root cause and risks, and define the practical implementation plan before development begins. To get a useful first response, send: 1. What happens now 2. What should happen instead 3. Your stack and connected systems 4. Relevant errors, logs, screenshots, or URLs

🚀 YOU MAKE IT! Looking for a Professional WordPress Website for your business? Do you need a Modern, Secure, and SEO-Friendly website that will help you grow online? 👉 You’re in the right place! I specialize in WordPress Website Development and Web Design using Elementor. Whether you need a new website, redesign, banking integration, or advanced website protection, I will create a solution that is fast, reliable, and tailored to your business goals. 💌 Invite me for a free interview – we’ll discuss your project and the best way to achieve success. 🔧 Services I Provide: ✅ WordPress Website Development (from scratch) ✅ Elementor Pro Expert – Custom Design & Layouts ✅ Business Website Design (corporate, portfolio, service-based) ✅ Website Redesign & Revamp of Old Sites ✅ Landing Pages & Lead Capture Pages ✅ E-commerce & Bank Payment Gateway Integration (Visa, MasterCard, PayPal, Stripe, etc.) ✅ Website Security & Malware Protection (firewalls, malware cleaning, hack prevention) ✅ Website Speed Optimization & Performance ✅ SEO Optimization (on-page, structure, metadata, speed) ✅ Ongoing Website Maintenance & Support 🌍 Types of Websites I Build: ☑️ Business Websites ☑️ Blogs & Personal Websites ☑️ Portfolios & Photography Sites ☑️ Arts & Culture Websites ☑️ Landing Pages for Marketing Campaigns ☑️ E-commerce Stores with Full Payment Integration Why Work With Me? ✔️ 7+ years of experience in WordPress & Web Design ✔️ Hands-on experience with banking integrations and payment systems ✔️ Advanced website security and malware protection ✔️ Worked with startups and established businesses ✔️ Focused on User Experience (UX) and conversions ✔️ Clean, elegant, and modern design tailored to your brand ✨ Let’s build a website that makes your business stand out and stay secure. 📩 Send me a message today and let’s get started!

I help e-commerce businesses connect WooCommerce with the systems they already rely on ERP, accounting, inventory, CRM and automate the workflows in between. 14 years of full-stack development (PHP, JavaScript, Node.js), with deep specialization in the WooCommerce REST API. What I typically solve: Two-way sync between WooCommerce and ERP systems: orders, stock levels, pricing, invoices Custom REST API integrations where off-the-shelf plugins fall short or don't exist AI-powered automation for order processing, product catalogs, and customer communication Custom WooCommerce plugins built for reliability on high-volume stores Payment gateway and shipping integrations (Stripe, NestPay, regional carriers) Recent work includes connecting WooCommerce stores to ERP systems for retailers, eliminating hours of daily manual data entry, and building AI automations that handle repetitive back-office tasks end to end. Recent work: connected a 6,000-product WooCommerce store to the client's ERP real-time stock and order sync that replaced ~8 hours/week of manual entry." I work best with businesses that need a long-term technical partner for their e-commerce operations not a one-off plugin install. If your store and your back office don't talk to each other properly, let's fix that.