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Industrial Automation Engineer | PLC / HMI / SCADA I design reliable automation systems for industrial processes and production plants. My focus is building stable PLC and HMI solutions that are easy to maintain, expand, and operate in real industrial environments. I have experience in full-cycle industrial automation projects, including: • PLC logic design and programming • HMI visualization and operator interface design • hardware selection and specification • VFD configuration and commissioning • industrial communication setup (Modbus, CANBus, Ethernet and other protocols) I also have experience integrating PLC systems with external software, databases, and higher-level control systems. PLC / HMI platforms I work with (by number of projects) OMRON – CX-One, CX-Supervisor, CX-Designer, NB-Designer Pro-face – GP-Pro EX, Pro-Server EX, GP-Viewer Rockwell / Allen-Bradley – Studio 5000 (Logix Designer), FactoryTalk, FactoryTalk View / Design Viewer Weintek – EasyBuilderPro IMO PLC/HMI Click PLC/HMI Additional technical skills • industrial communication networks (Modbus, CANBus, Ethernet) • VFD configuration and control • PLC integration with external software systems • database integration • PHP, MySQL, C++

Hello! 🖐I'm proud Upwork Top Rated QA Tester with 11+ years of experience in API, web and mobile automated testing. I'm an expert in QA automation, performance testing, manual testing and testing processes. Although as meticulous QA Tester I'm happy to jump on any challenge and technologies / industries, generally I'm focused on providing reliable cost-effective testing solutions for long-term enterprise projects. I have skills and knowledge of how the modern software is built. And I surely use that knowledge to create bug-catching test cases and validate every dark corner of the product!💪🏻 ✅ 11+ years as QA Tester ✅ 30+ successfully validated releases ✅ 5000+ automated test cases developed using QA Playwright, Cypress, Selenium ✅ 95% pass rate in UI framework with almost 2000 tests ✅ 5+ performance testing projects completed using Gatling, JMeter, Locust and k6 ✅ 90% automated tests coverage achieved across critical business applications ✅ 80% reduction in production bugs through comprehensive QA Engineering and QA automation strategies ✅I have 100% Job Success Score on Upwork! Programming languages (that I use in my QA automation job, I'm not a full stack developer): 🔶 Python 🔶 Java 🔶 JavaScript 🔶 TypeScript Frameworks and test runners: 🔶 Playwright 🔶 Cypress 🔶 Selenium WebDriver 🔶 Appium 🔶 Pytest 🔶 TestNG Performance testing 📊: Gatling, k6, JMeter, Locust, website performance. Other experience: 🔹QA Engineer with expertise in API testing, backend integration testing. 🔹QA Automation proficient in test framework design and maintenance. 🔹QA Tester implementing UX testing to ensure optimal user experience across all platforms (UX QA). 🔹SDET with strong technical background in open-source project, working with huge international team. 🔹QA Tester for iOS and Android applications. 🔹QA Lead experience managing teams of 15+ QA testers and automation engineers. 🔹As QA Engineer received ISTQB certification Industries: ✔️ Healthcare Technology: Test Automation Engineer for QA nurse scheduling and patient management systems ✔️ Salesforce QA: Comprehensive testing for 25+ Salesforce orgs and custom applications ✔️ E-commerce & Performance Marketing: as main QA Tetser I optimized testing strategies for high-traffic platforms ✔️ AdTech: Implemented robust QA automation for advertising manager and provider ✔️ Restaurants: lead QA team on quick-service restaurants (QSR) and table-service restaurants (TSR) multiplatform mobile application Why me?🤝🏻 As an Top Rated QA Automation Engineer and QA Tester specialist, I bring a unique combination of technical expertise and business acumen. My role as QA tester evolved into QA Automation Tester and eventually QA Lead, giving me comprehensive understanding of the entire testing lifecycle. Whether you need a Performance Testing expert, SDET for complex integrations, or Automation QA Engineer for your next project, I deliver measurable results that drive business success.

🚀 AI Automation Engineer building production AI agents and end-to-end workflow automation. I leverage Claude Code, Cursor and the broader AI dev stack to ship 3–5x faster — without cutting corners on production reliability. WHAT I BUILD FOR CLIENTS: ✅ Conversational AI Agents (Setters, Lead Qualifiers) Instagram DM, WhatsApp, and SMS AI agents that qualify leads, handle objections, and book calls. Built for high-ticket coaches, agencies, and AI businesses. Flows in Manychat / UChat / ChatBot, powered by Claude / GPT / Gemini, with guardrails that keep responses on-brand and never robotic. Shipped to production in English, Hebrew, and German. ✅ Operations & CX AI Agents Beyond setters: AI agents that triage tickets, score QA, classify severity, route escalations, and draft responses across email, chat, calls, and review channels. Production-grade knowledge bases (tone guidelines, SLA rules, scenario playbooks, QA scorecards). Built on Claude / OpenAI / Relevance AI / n8n. ✅ End-to-End Marketing & Sales Stacks Full automation across GoHighLevel, ActiveCampaign, HubSpot, Pipedrive, Zoho, ClickFunnels — connected with Make, n8n, or Zapier. SDR cadences managing 30,000+ subscribers. Multi-stage lead-gen pipelines (web scraping → enrichment → CRM → AI-personalized outreach). UTM/source attribution, quiz-funnel routing (ScoreApp / Tally / Typeform), CRM hygiene, lifecycle automation. ✅ Custom AI Workflows & RAG Agents RAG knowledge bases (Pinecone, Supabase pgvector). Multi-step AI agents in Relevance AI and n8n. OpenAI / Claude / Gemini API integrations. Voice AI workflows. Document automation with PandaDoc, e-sign, and AI-summarized intake. ✅ Smart Document & Operations Automation Airtable / Google Sheets / Notion as backends. PandaDoc proposals & e-sign. Bill payment flows. Slack / Telegram routing. Browser automation with Playwright when an API isn't available. Custom Next.js / Tailwind when a lead-capture surface needs to do more than no-code allows. Python where appropriate. RECENT WORK (anonymized): 📦 Automotive CX SaaS — Production CX AI-Agent training system. Architected and authored a 35-file operations knowledge base powering ticket triage, severity classification, QA scoring, escalation routing, and AI-drafted responses across email / call / review channels. Tone guidelines, SLA rules, crisis-management playbooks, scorecards — the full layer the AI agent reasons over. 📦 Latam Lead-Gen Agency — 4-stage Make lead pipeline. Apify web scraping → Google Sheets staging → AI email enrichment → Notion CRM with webhook intake → AI-drafted personalized outreach via Gmail. Plus a Twilio SMS real-estate bot (Airtable backend) and an OpenAI-powered contractor-leads classifier. ✅ Sales-Intelligence & Lead-Gen Pipelines Sales Navigator scraping, Apify Google Maps actors, LinkedIn automation, and multi-source enrichment (FullEnrich, BetterContact, Kaspr, Societeinfo, Clearbit). Lead-scoring flows tied to email opens, clicks, LinkedIn replies, and inbound social signals. Pipedrive lifecycle automation: owner-reset, re-engagement, bounce handling, automated relance. AI DEVELOPMENT TOOLS I LEVERAGE TO SHIP FASTER: Claude Code, Cursor, GitHub Copilot, Anthropic Claude API, OpenAI API, Google Gemini, Grok, DeepSeek. I treat AI as an engineering force multiplier — your project benefits from senior judgment + AI-accelerated execution. STACK: Make · n8n (self-hosted) · Zapier · GoHighLevel · ActiveCampaign · HubSpot · Pipedrive · Zoho CRM · ClickFunnels · Manychat · UChat · ChatBot · Relevance AI · Airtable · Supabase · PostgreSQL · Pinecone · Google Sheets · Notion · Slack · Telegram · PandaDoc · Bill · ScoreApp · Tally · Typeform · Twilio · Apify · Playwright · Next.js · Python WHAT YOU CAN EXPECT: 💬 Clear, transparent communication — no jargon, no surprises 🎯 Outcome-focused — I ship working systems, not flowcharts 🔧 Reliable, on-time delivery — backed by 13,000+ hours and 100% Job Success 🤝 Languages: English (Fluent), Russian / Ukrainian (Native), French (Fluent), Polish (Conversational) Send me your goal — I'll respond within 0-4 hours with a concrete approach.

⛔️ Stop losing users due to crashing apps, hidden navigation barriers, and unexpected glitches! ✅ I will find critical vulnerabilities in your Web, Mobile, or Web3 software before they cost you time, money, and reputation. 🎯 CORE STRATEGY & TECHNICAL APPROACH Finding a reliable QA Tester who can dive deep into your product architecture is crucial for a successful launch. I streamline chaotic testing workflows by setting up a clear strategy tailored to your specific business goals, ensuring ✅ 100% requirements coverage across the entire SDLC and STLC. As your QA Tester, I identify: 🐛 Functional bugs & Smart Contract user-flow anomalies 🚦 Performance bottlenecks & Latency issues 🔐 Security threats (OWASP Top 10 & Web3 entry vulnerabilities) — early in the development process to save you time and budget. 📊 PROVEN RESULTS As a results-oriented QA Tester, I focus on tangible impacts and data-driven metrics: 🏆 4+ years of hands-on QA experience delivering high-quality web applications, SaaS, and mobile apps. 🚀 100+ successful releases shipped (including Web3 & AI integrations). 🤖 4,000+ automated tests written and 📝 10,000+ manual test cases designed. 💵 $200,000+ saved for clients through optimized QA automation and early bug detection. ⚡ Optimized CI/CD pipelines to reduce regression cycles from 5 days to 4 hours through parallel test execution. 🚨 1,000+ critical bugs caught pre-release, including memory leaks, race conditions, and SQL injections. 🧩 COMPREHENSIVE SERVICES & EXPERTISE My approach as a versatile QA Tester covers every layer of your application: • 🤖 FULL-STACK AUTOMATION: Built scalable automation frameworks using Playwright, Cypress, and Selenium WebDriver with Page Object Model and BDD practices to ensure your test suite is maintainable and readable. • 🎮 MANUAL QA, GAME & WEB3 TESTING: Whether acting as a methodical manual tester or a dedicated video game tester, I cover mechanics, balance, and UI/UX consistency (Cocos, Unity) alongside standard suites. As a game tester, I ensure bug-free gameplay. Specialize in Web3 testing, verifying dApps, token transfers, and non-custodial wallet interactions. • 🔐 API, AI & SECURITY TESTING: Validation of business logic, authentication tokens, LLM prompt responses, and data integrity using Postman and REST Assured. I conduct security audits based on OWASP standards to protect against unauthorized data access. • 📈 PERFORMANCE & LOAD TESTING: Using JMeter and k6 to simulate high-traffic scenarios (Stress, Endurance, and Spike testing), identifying server-side bottlenecks before they impact users. • 📱 MOBILE APP TESTING: Flawless experience across real iOS (via TestFlight) and Android devices, testing for battery consumption, network switching (4G/5G/Wi-Fi), and interrupt conditions. • ♿ ACCESSIBILITY (A11Y): Guaranteeing WCAG 2.1/2.2 compliance through manual screen reader testing (NVDA, JAWS) and automated audit tools like AXE and WAVE. 📱 REAL DEVICE LAB: Cross-platform verification on real Windows 10/11 laptops, iOS (iPhone via TestFlight), and Android devices. 🛠️ TECHNICAL ECOSYSTEM 📌 Methodologies: Agile, Scrum, Kanban, TDD, CI/CD, DevOps. 🧪 Testing Types: Black-box, White-box, Gray-box, Cross-browser, Localization (L10n), Usability, Integration, and UAT. 💻 Languages: Java, TypeScript, JavaScript, SQL. 🔧 Tools & Web3: Postman, Newman, TestFlight, Metamask, Coinbase Wallet, WalletConnect, Burp Suite, OWASP ZAP, Charles Proxy, Fiddler, Chrome DevTools. ☁️ Infrastructure: Jenkins, GitHub Actions, GitLab CI, Docker, Kubernetes. 📋 Management: JIRA, TestRail, Zephyr, Confluence, Monday, Trello. 🏢 INDUSTRY EXPERIENCE As a QA Tester with deep domain knowledge, I have successfully delivered projects in: 💳 FINTECH, WEB3 & CRYPTO: Secure payment gateways, dApps, DEX/CEX platforms, DeFi protocols, and transaction ledger verification. 🛒 E-COMMERCE: Magento, WordPress, and Shopify platforms with high-load user flows and P2P payments. 🏥 HEALTHCARE & EDTECH: Privacy-compliant systems (HIPAA) and interactive SaaS tools. 🎰 GAMBLING & GAMING: Real-time data processing, social features, and PC/Steam game testing. 🤖 GENERATIVE AI & CMS: Testing data integrity for AI models, AI chat-bots, prompt engineering, and content management flexibility. 💡 WHY MY METHODOLOGY WORKS Choosing me as your QA Tester means getting a specialist who plugs into all stages of the SDLC. I provide developer-friendly logs, videos, and impact assessments to simplify the debug workflow. I adapt fast to changing priorities, update test cases on the fly, and ensure testing stays aligned with your roadmap. I onboarding quickly and ask the right questions to minimize the training you need to provide. ✅ READY TO LAUNCH WITH CONFIDENCE? Don't let a minor bug ruin a major release. 💬 Click the green “Message” or “Invite” button at the top right of this page to discuss how I can help as your QA Tester to make your product stable, secure, and ready for scale!

100% Job Success | 7+ years in backend & automation | I build n8n workflows and AI-powered agents that replace manual work across SaaS, CRM, and payment systems. I specialize in building production-ready automation platforms, AI-powered workflows, and backend systems that reduce manual work, improve operations, and scale reliably. Unlike pure automation freelancers, I bring strong backend engineering experience — which means I don’t just connect tools, I build stable systems behind them. Why Clients Work With Me I combine backend development + workflow automation + AI integrations to build solutions that survive production. I work with startups, SaaS businesses, agencies, and operational teams that need: AI-powered workflow automation CRM & business process automation Payment & subscription systems SaaS backend development API integrations & webhooks Lead handling & internal tools AI agents / voice AI / document automation I focus on: scalability clean architecture secure integrations reliability automation that reduces real operational cost Core Expertise 🔧 AI Automation / n8n / Workflow Systems I design automation pipelines that replace manual business processes. Projects include: AI Lead Qualification & CRM Routing lead verification, enrichment, scoring, routing CRM → Slack → Email automation hubs notifications, alerts, approval flows Order & fulfillment automation Shopify / WooCommerce workflows Webhook-based integration platforms API-first automation layers Subscription & billing workflows retries, failed payments, alerts, churn prevention Internal ops automations status-based triggers, task flows, reporting 🤖 AI Agents / Voice AI / LLM Integrations I build AI-powered tools that connect directly into real workflows. Experience with: AI customer support bots FAQ assistants lead qualification bots AI email reply assistants voice AI integrations CRM-connected assistants AI document parsing workflows Tech & integrations: OpenAI API VAPI 11Labs LLM workflows retrieval-based assistants structured-output pipelines 🧱 Backend Engineering / SaaS Development My strongest technical foundation is backend systems. 7+ years working with PHP ecosystems, mainly building business/admin platforms. Experience includes: Laravel applications CodeIgniter systems multi-tenant SaaS admin panels RBAC / permissions API development auth & access control queue-based workflows file-processing services business logic engines workflow engines cron-based processing 💳 Stripe / Payments / Finance Automation Strong niche expertise in payment-heavy systems. I’ve worked on: Stripe subscription systems Webhooks & event handling failed-payment recovery dunning workflows fraud-safe checkout flows payment validation layers invoice/accounting exports DATEV-style exports recurring billing logic This is especially useful for SaaS and subscription businesses. ⚙️ Integrations & Infrastructure I build stable integrations, not fragile no-code chains. Experience with: REST APIs OAuth2 Webhooks JSON transformations CRM integrations third-party platforms Twilio-based flows Slack / Notion / Airtable Google Workspace APIs Supabase / PostgreSQL Docker-based deployments reverse proxy / SSL server setup queue scaling maintenance & reliability What I Build AI workflow automation systems SaaS backends CRM automation pipelines payment & subscription logic admin panels internal tools voice AI workflows AI-integrated customer support systems webhook orchestration layers secure file-processing pipelines lead generation & enrichment systems business process automation platforms What Clients Get ✔ Backend-first automation engineering ✔ Production-ready systems ✔ Clean architecture ✔ Scalable integrations ✔ Security-focused implementation ✔ Fast communication ✔ Long-term maintainability ✔ Strong business logic understanding ✔ Reliable post-launch support Best Fit Clients I work best with: SaaS businesses subscription platforms startups agencies CRM-heavy businesses payment-heavy products operational teams businesses replacing manual workflows with automation Technical Stack Backend: PHP, Laravel, CodeIgniter, Node.js Automation: n8n, Make, Webhooks, API orchestration AI: OpenAI API, VAPI, 11Labs, LLM integrations, AI workflows Payments: Stripe, subscriptions, invoices, retries Database: MySQL, PostgreSQL, Supabase Infra: Docker, SSL, reverse proxy, server deployments Integrations: Slack, Google Workspace, CRM systems, Twilio Keywords n8n Developer, AI Automation Engineer, Backend Engineer, Laravel Developer, Stripe Integration Expert, Workflow Automation Developer, API Integration Specialist, SaaS Backend Developer, CRM Automation, Webhook Development, AI Agent Development, VAPI Integration, OpenAI API, LLM Workflows, Subscription Billing Automation, Payment Automation, Business Process Automation

👍 RING-RING! ⭐⭐⭐⭐⭐ Top Skilled Freelancer on the phone! ➤ Scale your operations without the manual grind — I build the automation that powers your growth. 📌 Senior Engineer (17+ YoE) | Specialist in n8n Automation, AI Automation & API Integrations The outcomes you get by working with me: ✅ n8n Automation: End-to-end orchestration that turns fragmented tasks into a seamless, 24/7 autonomous engine. ✅ API Integrations: Robust connections (HubSpot, Airtable, Notion) to ensure your data is always synced and accessible. ✅ Database Design: High-performance architecture that stays fast and organized as your business grows. ✅ AI Agents: Intelligent n8n automation that slashes manual work hours and eliminates human error. ⚠️ 𝗠𝗼𝘀𝘁 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗵𝗶𝗿𝗲 𝗺𝗲 𝘄𝗵𝗲𝗻: — data is duplicated or lost between systems — workflows break without visibility — teams waste hours on manual updates — tools (Airtable, HubSpot CRM, Notion, etc.) don’t sync properly I fix this by building production-ready n8n Automation workflows with stable API Integrations. ⚙️ 𝗪𝗵𝗮𝘁 𝗜 𝘁𝘆𝗽𝗶𝗰𝗮𝗹𝗹𝘆 𝗯𝘂𝗶𝗹𝗱: • Lead pipelines → Airtable / HubSpot CRM (no duplicates, real-time sync) • Invoice automation (OCR → AI parsing → approval → accounting) • Data pipelines with validation and error handling • AI-powered workflows inside n8n (routing, scoring, decision logic) 🧠 𝗠𝘆 𝗮𝗽𝗽𝗿𝗼𝗮𝗰𝗵 𝗶𝘀 𝘀𝗶𝗺𝗽𝗹𝗲: — Understand your workflow — Identify bottlenecks — Build n8n Automation with strong API Integrations — Make it stable, scalable, and hands-free 🛠 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗳𝗼𝗰𝘂𝘀: • n8n Automation (self-hosted / cloud) • API Integrations (REST, Webhooks, OAuth) • Airtable, HubSpot CRM • JSON parsing, data validation, deduplication • Error handling, retries, logging Industries Cover Healthcare, Transport, Retail, Asset Management, Real Estate, Dating, Nature/Wildlife, Rental, Food Delivery, Fintech / Finance and Banking, Cryptocurrency, Entertainment, Hospitality, Logistics, Manufacturing, Media and Publishing, Non-Profit, Sports and Fitness, Travel and Tourism, Utilities, Wellness, Medical Dashboard, Marketplace, Advertising, Automotive, Business Innovations, Ecology, Human Resources, LegalTech, Lifestyle, Fashion, Marketing, Navigation, Education, E-learning. Clients feedback: 🗣️ “Igor is an experienced developer who takes the time to clearly understand the problem before implementing a solution. He enjoys tackling complex challenges and has a strong reputation for getting to the root of difficult issues in large-scale global systems. Igor is hardworking, supports the team in successful deliveries, and is a valuable asset to any team.” — Gavin Henderson, MBA, PMP Director, Eskdale Technology Consulting Ltd (UK) 🗣️ “Igor is a highly skilled and dependable developer with a strong understanding of system architecture and complex technical challenges. He consistently delivers high-quality results, pays great attention to detail, and reliably meets project deadlines. Igor also communicates clearly, making complex technical topics understandable for non-technical stakeholders and collaborating effectively with the team.” — Paul Sidelnikow E-Commerce & Digital Marketing Unternehmer (DE) 🗣️ “Igor is one of the few experts who first seeks to understand the purpose behind a solution before starting development. This approach allows him to deliver high-quality software efficiently and cost-effectively. He also drives communication when needed to ensure projects are completed on time and do not delay other client work.” — Michiel Kersten Product Owner, (NL) If you're looking for reliable automation solutions, let's talk. Python, JavaScript, PHP, HTML, CSS, SQL, n8n, Zapier, API Integration, RESTful API, Automation, Marketing Automation, Data Scraping, Data Entry, WordPress, Microsoft Excel, Social Media Marketing, Email Marketing n8n automation | JavaScript | Automation | Airtable | Airtable automation | API Integration | API | JSON | API Development | n8n | Zapier | Python | Web Development | Marketing Automation | Artificial Intelligence | shopify automation | wordpress automation | youtube automation | ai workflow development on n8n | ai automation | zapier automation | Workflow automation | AI AgentsCRM | Email automation | Airtable API | Database Design | Webflow | Make (Integromat) | Automation engineer