Hire the Best Oracle ATG Web Commerce Specialists
in Ukraine

Hi, my name is Taras. I have more 8 years experience using of Oracle products(RDBMS, OAF, Form Builder, BI Publisher, OBIEE, ADF) and more 15 years experience in IT in total. Also, my experience includes customization ERP(OeBS, JD Edwards). Created client-server tools for devices(scales, mobile barcode terminals, scanners) and ERP. My primary skills: PL/SQL, SQL, T-SQL, pgPL/SQL BI Reporting, XML/BI Publisher, Grafana, Tableau Visual Studio, Form Builder, OAF, ADF C++(MFC,STL),Java, Javascript

✅ 28,000+ worked hours and 280+ projects completed exclusively at Upwork ✅ Shopify Expert ✅ Adobe Certified Master – Adobe Commerce Architect ✅ Magento Certified Developer Plus I specialize in connecting ecommerce ecosystems - synchronizing product catalogs, inventory, pricing, and orders across platforms in real time. With 15 years in ecommerce and data integration, I design and build reliable pipelines between Shopify, Magento, Odoo, SAP, Salesforce Commerce Cloud, Amazon, eBay, Tradebyte, and custom APIs. If your business runs across multiple channels, warehouses, or ERPs and you need data to stay consistent, fast, and accurate - that's exactly what I do. Commerce Platform Migrations: Adobe Commerce → Shopify Adobe Commerce → SFCC Adobe Commerce → Composable Microservices Shopify → Composable Microservices What I build: - Multi-channel inventory and order sync: Amazon, eBay, Walmart, Tradebyte, shopping feeds - ERP / PIM integrations: Odoo, SAP, SFCC (Salesforce Commerce Cloud) - Product catalog pipelines: bulk imports, real-time price and stock updates, feed generation - Payment and checkout integrations: Stripe, Klarna, custom payment gateways - Async data processing: queue-based pipelines (SQS, Redis, RabbitMQ) for high-volume flows - Data scraping, transformation, normalization, and distribution - Magento 2 backend modules, APIs, and custom connectors To help my clients resolve issues with existing code and build new state-of-the-art technology projects. Technical stack: Python · Shopify · Magento 2 · SFCC SFRA / Site Genesis · NextJS · React · Node.js · NestJS · AWS · GCP · Docker Integrations: Odoo · SAP · SFCC · Amazon SP-API · eBay · Tradebyte · M2E Pro · Pipe17 · Klarna · REST API · GraphQL · Shopping Feeds (Google, Facebook, Bing) Marketing Data: Klaviyo · Amplitude · FB Pixels · GTM Infrastructure: AWS (SQS, Lambda, S3, EC2) · GCP · Nginx · Redis · MongoDB · PostgreSQL · Memcache Monitoring: Datadog · Logzio · Cypress · PyTest · NewRelic Focused on US and European projects. Full business hours coverage for London and New York time zones.

I'm an E-commerce expert with 18+ years of experience, Technical lead, and CTO of Alva Commerce company. Our company is east European leading e-commerce and custom web development company with a proved success experience. We are providing full cycle projects delivery and technical support for our clients.

✅ 20+ years of enterprise engineering expertise ✅ 100% Traceability & 0% Double-Allocation Inventory Ecosystems Manual tracking, spreadsheet discrepancies, and fragmented multi-channel orders drain up to 30–40% of operational efficiency, creating massive supply chain bottlenecks. We help mid-market manufacturers, B2B wholesale distributors, and global e-commerce brands eliminate siloed workflows by architecting unified digital operating systems. Specializing in high-impact operations automation, we design and build bespoke, multi-tenant cloud SaaS platforms, advanced Warehouse Management Systems (WMS), and robust Enterprise Resource Planning (ERP) tools that safely handle heavy operational scale without adding headcount. ⚙️ What We Do Best & Our Impact Metrics: Custom ERP & WMS Platform Development: Engineering complete multi-role web architectures and secure mobile apps from scratch. Result: Replaced systems like Floorzap and legacy tools to drive 10x higher processing throughput for operations teams. Multi-Channel & Multi-Tenant Integrations: Developing deep, automated sync pipelines between core databases and external environments. Result: Seamlessly managed over 400+ active SKUs via real-time Shopify Plus, Amazon SP-API, Faire, and QuickBooks Online financial networks. Advanced Inventory Tracking & FEFO/FIFO Logic: Implementing granular lot tracking, expiration monitoring, serial numbers, and physical bin/shelf location mapping. Result: Reduced manual data capture errors by 45% and established total stock compliance in regulated spaces. Automated Fulfillment & Shipping Workflows: Custom engineering sequential label printing, weight scale/dimensioner data capture, and AI exception-tracking. Result: Automated real-time CSV extraction directly to warehouse APIs, reducing administrative overhead by ~50%. Hardware & Scan Integration Engine: Building native and hybrid mobile applications (React Native) utilizing DataWedge APIs for rugged Zebra PDA devices and real-time UPC barcode workflows. Result: Boosted on-the-floor sorting and dispatch validation speeds by 150%. 🔄 Our Proven Operational Process: Scope Discovery & Architecture Mapping: We analyze your existing workflows (including reviewing complex 20+ page specification documents, legacy DB architectures, and internal spreadsheets) to build an ironclad technical roadmap detailing milestones, data entity diagrams, and risk assessments. Custom Execution & Clean Engineering: Building on top of secure, high-performance tech stacks (Next.js, Node.js, Supabase, PostgreSQL). We build scalable database schemas featuring Row-Level Security (RLS) for complete multi-tenant data isolation and continuous server health logging. Deployment, QA & Infrastructure Scale: We ship code iteratively using strict GitHub PR reviews and automated Docker CI/CD pipelines to AWS, Vercel, or custom cloud servers, completing full functional validation inside sandboxed testing loops before turning systems live. 🛠️ Domain & Technology Expertise (Proven Results): Platform & Architecture: Custom ERP, Multi-Tenant WMS SaaS, B2B Work Order Engines, Client Portals against Floor Plans. Automations & Workflows: n8n, Zapier, Webhooks, Multi-Carrier API Integrations (ShipStation, UPS, FedEx, USPS), OpenClaw AI frameworks, ShipStation API Integration Data & Logistics Core: PostgreSQL, Supabase RLS, Secure OAuth/M365 Integrations, Automated PDF Quotation Engines. Frontend & Native Mobile: Next.js 14 (App Router), React, Tailwind CSS, Shadcn/ui, React Native (iOS & Android). Whether you need to scale your operations to thousands of monthly movements, replace a legacy system without disrupting live trade, or deploy a commercial WMS SaaS platform to market, we turn messy logistics into clean code.

Expert Oracle & SQL Database Developer | Schema Design & Performance Tuning With 24+ years of experience in database engineering, I specialize in Oracle PL/SQL, PostgreSQL, and MySQL development. I design complex schemas, build and optimize procedures, packages, and triggers, and deliver high‑performance solutions for enterprise‑scale systems in billing, CRM, and financial domains. My work has included full database migrations, query optimization for millions of records, and partitioning strategies that ensure scalability and reliability. 🔹 Key Expertise: ✅ Oracle PL/SQL, PostgreSQL, MySQL ✅ Schema Design, Query Optimization, Partitioning ✅ ETL Development, Data Migration, API Integrations ✅ Reporting Tools & Custom Data Solutions ✅ Enterprise Systems in Finance, Telecom, and SaaS Clients value my ability to deliver precise, efficient, and reliable database solutions that support mission‑critical processes. I am available for both short‑term consulting and long‑term development projects.

𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 | 𝗛𝗶𝗴𝗵-𝗟𝗼𝗮𝗱 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 | 𝗼𝘀𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲 • 𝗟𝗮𝗿𝗮𝘃𝗲𝗹 • 𝗘𝗹𝗮𝘀𝘁𝗶𝗰𝘀𝗲𝗮𝗿𝗰𝗵 I build and optimize e-commerce platforms that scale. My focus: reliable, fast, secure systems handling millions of products, complex integrations, and real-world traffic. ⬜𝐖𝐡𝐚𝐭 𝐈 𝐝𝐞𝐥𝐢𝐯𝐞𝐫 ☑️Custom e-commerce architecture for high-traffic operations ☑️Platform optimization: search performance, Core Vitals, conversion rates ☑️Security infrastructure: DDoS protection, bot prevention, compliance ☑️Technical migrations: code modernization, infrastructure upgrades, complex integrations ☑️Ongoing support and optimization as you grow ⬜𝐖𝐡𝐨 𝐈 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 Retailers scaling from thousands to millions of SKUs. Established e-commerce businesses optimizing for performance. Enterprise teams building custom marketplace solutions. ⬜𝐓𝐡𝐞 𝐫𝐞𝐚𝐥𝐢𝐭𝐲 A poorly built platform hemorrhages customers at scale. I design for real constraints - millions of products, concurrent users, inventory syncs, payment processing, search latency. I've done this 175+ times over 11 years. ⬜𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬 ✅High-Load E-commerce Systems - built platforms handling 2M+ product catalogs with custom product matching logic, Elasticsearch-powered search, and multi-language support. Managed real-time inventory sync across multiple channels, CRM integration, and complex pricing structures. ✅Performance & Security - optimized stores for Google Core Vitals (LCP, CLS, FID). Implemented Cloudflare + custom DDoS mitigation. Hardened servers against traffic spikes and bot abuse. Modernized legacy code (PHP 5.x → 8.x) on live platforms without downtime. ✅Custom Solutions - bulk product ingestion with intelligent aliasing. Multi-tier pricing and OEM-specific filtering. PDF generation from product specs. Non-standard catalog architectures. Real-time CRM/ERP data exchange. Elasticsearch integration across complex product hierarchies. ⬜𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 → Savat-auto | Automotive parts (2M+ SKUs) Custom nomenclature system + product aliasing at scale, Cloudflare DDoS protection. Handles peak traffic reliably. → Mirpola-dekora | Home decor (60K+ products) Elasticsearch search rebuild, bilingual support, performance tuning. Improved search speed 10x+, Core Vitals optimized. → Officell | B2B office supplies (20K+ SKUs) PHP 5.x → 8.x migration, DDoS infrastructure, load testing, custom functionality. Now secure and scalable. → Ltx-led | LED/lighting products (8K+ SKUs, 3 languages) Custom architecture with intelligent search, PDF generation from specs, bot protection. → Dream-group-toys & Dm-opt | Linked B2B/B2C (10K+ products) Custom data exchange layer between two stores, CRM sync (customers, orders, pricing), multi-tier pricing. ⬜𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 E-commerce Architecture & Design | High-Load System Optimization | Performance Tuning (Core Vitals, speed, SEO) | Security & DDoS Protection | Elasticsearch Integration | Multi-Language Setup | CRM/ERP Integration | Code Modernization | Post-Launch Support | Architecture Consulting ⬜𝐒𝐤𝐢𝐥𝐥𝐬 ✔Platforms: osCommerce, Laravel, Wordpress, Magento ✔Backend: PHP, Laravel, Symfony, MySQL, Elasticsearch, Redis ✔Frontend: Vue.js, JavaScript, HTML/CSS, responsive design ✔Infrastructure & DevOps: Cloudflare, DDoS protection, Docker, server optimization, load testing ✔Tools & Systems: Git, GitHub, API integration, Google Analytics ⬜𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐑𝐞𝐭𝐮𝐫𝐧 ✔11+ years shipping e-commerce at scale ✔175+ completed projects, 100% Job Success ✔Understand both code and business impact ✔Proactive problem-solving, not just task execution ✔Transparent communication, realistic timelines Last updated: August 17, 2026