Hire the Best ANTLR v4 Professionals

I am a Software Engineer specializing in enterprise data infrastructure and large-scale web automation systems. With 4+ years of engineering experience, I architect robust, maintainable data pipelines that power business intelligence at scale. 🎯 Core Competencies: • ETL Architecture: Designing production-grade data pipelines (Python/TypeScript) with automated validation, schema enforcement, and error handling • Anti-Detection Engineering: Bypassing enterprise-grade protections (Cloudflare, Akamai, DataDome) with 95-99% success rates • Data Infrastructure: Building distributed scraping architectures capable of handling 10M+ daily requests with auto-scaling, queue management, and real-time monitoring • Cloud Integration: Seamless data delivery to BigQuery, PostgreSQL, AWS S3, Snowflake, and data warehouses with optimized loading strategies 🛠 Technical Stack: • Languages: Python (Scrapy, AsyncIO), TypeScript/Node.js • Automation: Selenium Grid, Puppeteer Cluster, Playwright with stealth plugins • Data Engineering: Apache Airflow, dbt, Pandas, custom ETL frameworks • Infrastructure: Docker, Kubernetes, Redis, RabbitMQ, rotating residential proxies • Storage: BigQuery, PostgreSQL, MongoDB, AWS S3, Google Cloud Storage 💼 Ideal For: • Companies needing reliable, long-term data extraction infrastructure • ETL pipeline development and data warehouse integration • Complex automation requiring custom browser engineering • High-volume scraping requiring distributed worker architectures and SLA guarantees Why Enterprise Clients Choose Me: ✓ Engineering-First Approach: I write clean, documented, version-controlled code not brittle scripts ✓ Scalability by Design: Systems built to grow from thousands to millions of records without rewrites ✓ Data Integrity: Automated quality checks, deduplication, and schema validation at ingestion ✓ DevOps Ready: CI/CD integration, containerized deployments, and comprehensive logging

I build production-grade Python-based data extraction and Web Scraping systems that survive where others fail. Projects range from focused data extraction tasks to large-scale Anti-Bot resilient infrastructures — each engineered for stability, performance, and long-term reliability. Over 12+ years, I’ve designed extraction systems processing 1B+ structured records across marketplaces, aggregators, AI/ML platforms, competitive intelligence systems, and enterprise catalogs. My systems are built using Python, Scrapy, Playwright, and Selenium — combining Web Scraper development, Data Mining, API Integration, and ETL pipeline design into stable, production-grade architectures. Whether you need a targeted scraping solution or a high-volume distributed pipeline, I architect the right system. When data becomes mission-critical — reliability matters more than code. ────────────── What I Build ────────────── • Custom Python Web Scraper and Data Extraction systems aligned with business logic • Scalable web crawlers handling anything from selective datasets to millions of pages • Continuous update pipelines (batch & incremental ETL workflows) • Queue-based distributed processing • High-concurrency execution models • API-based data extraction and system integrations • Clean ingestion into PostgreSQL / MySQL / APIs / cloud storage • Automated validation, deduplication & anomaly detection • Structured Data Mining pipelines for growing datasets You receive structured, business-ready datasets — not scripts to babysit. ────────────── Anti-Bot & Protection Layers ────────────── Modern platforms are protected.I work inside environments guarded by: - Cloudflare (403 / 429 / Turnstile) - DataDome behavioral detection - Akamai Bot Manager - PerimeterX - Reverse engineering of detection vectors & TLS/JA3 fingerprint alignment - Headless & browser fingerprint detection - hCaptcha / reCAPTCHA v3 Enterprise - Sustainable session & token lifecycle management This is not proxy swapping. This is controlled, sustainable access engineering. ────────────── Scale & Cost Control ────────────── As volume increases, scraping typically fails in two ways: 1) Stability collapses 2) Infrastructure & proxy costs explode I optimize concurrency models, routing logic, batching strategy, request distribution, and traffic patterns to maintain high throughput with controlled infrastructure load. Where relevant, I reduce proxy and infrastructure costs by up to 30% while preserving system stability. Result: High uptime. Predictable performance. Controlled margins. ────────────── Future-Proofing ────────────── Websites evolve. Structures change. Protection layers update. I implement structural drift monitoring and heartbeat systems that detect site changes before pipelines fail — shifting from reactive recovery to proactive control. Most developers fix scraping after it breaks. I design systems that minimize breakage from the start. ────────────── Who This Is For ────────────── • Founders building data-driven products • AI/ML teams requiring proprietary datasets • Businesses automating competitive intelligence or market tracking • Companies where reliable data access supports growth ────────────── Confidence Check ────────────── If needed, I can provide a working sample before full engagement to demonstrate data quality and bypass stability. To get started, send: - Target website(s) - Required data fields - Expected volume - Update frequency - Preferred output format Whether you're starting with a focused scraping task or building a large-scale data infrastructure — let’s build it properly.

⭐⭐⭐⭐⭐ 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 🏆 𝗥𝗮𝗻𝗸𝗲𝗱 𝗶𝗻 𝘁𝗵𝗲 𝗧𝗼𝗽 𝟱% 𝗼𝗳 𝗙𝗿𝗲𝗲𝗹𝗮𝗻𝗰𝗲𝗿𝘀 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 Greetings! I’m 𝗛𝗮𝗿𝘀𝗵𝗶𝗹 𝗕𝗼𝗱𝗮𝗿𝗮, a 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 specializing in 𝗔𝗜-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝗪𝗲𝗯, 𝗠𝗼𝗯𝗶𝗹𝗲 and 𝗦𝗮𝗮𝗦 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 with 𝟱+ 𝘆𝗲𝗮𝗿𝘀 of experience building scalable, user-focused products from concept to deployment. I combine strong engineering with AI-assisted development using 𝗖𝘂𝗿𝘀𝗼𝗿, 𝗥𝗲𝗽𝗹𝗶𝘁, 𝗖𝗼𝗱𝗲𝘅, 𝗟𝗼𝘃𝗮𝗯𝗹𝗲, 𝗚𝗼𝗼𝗴𝗹𝗲 𝗔𝗜 𝗦𝘁𝘂𝗱𝗶𝗼, 𝗪𝗶𝗻𝗱𝘀𝘂𝗿𝗳 and 𝗖𝗼𝗽𝗶𝗹𝗼𝘁 to accelerate delivery while maintaining clean, production-ready code. 🧠 𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: 🤖 𝗔𝗜 𝗧𝗼𝗼𝗹𝘀: - Cursor, Lovable, Replit, Codex, Google AI Studio, Windsurf, Copilot(Github), Locofy, Codia, ChatGPT as per client requirement 🎨 𝗨𝗜/𝗨𝗫 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀: - HTML5, CSS3, SASS/LESS, TailwindCSS, Material UI, Ant Design, Vuetify, React-Bootstrap, BlueprintJS ⚛️ 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 & 𝗠𝗼𝗯𝗶𝗹𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: - ReactJS, Next.js (SSR), Vue.js, Nuxt.js, Angular - React Native, Flutter, Ionic Framework, Android & iOS - State Management: Redux, MobX, Thunk, Saga 🛠 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: - Node.js, Express.js, NestJS, MVC architecture - GraphQL, REST APIs, gRPC/tRPC, WebSockets (Socket) 🗃 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: - MongoDB, PostgreSQL, MySQL, Firebase, DynamoDB (SQL & NoSQL), Redis ☁️ 𝗖𝗹𝗼𝘂𝗱 & 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: - AWS, GCP, Firebase Functions, Hasura, Heroku, Netlify, Vercel, Cloudflare 🔧 𝗧𝗼𝗼𝗹𝘀 & 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄: - Git, GitHub, GitLab, Bitbucket - Project Management: Jira, Trello, Asana 🏆 𝗞𝗲𝘆 𝗔𝗰𝗰𝗼𝗺𝗽𝗹𝗶𝘀𝗵𝗺𝗲𝗻𝘁𝘀 - Built and launched 35+ full-scale web applications across diverse industries - Improved performance by 70% for a large-scale healthcare platform - Led complex API integrations and third-party service implementations - Co-developed a full-featured social media platform with live interaction and streaming ✅ 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲? - Highly responsive and easy to communicate with - Passionate about cutting-edge technologies and continuous improvement - Focused on clean, maintainable code and scalable architecture - Proven track record of on-time, in-budget delivery - Committed to client success and long-term partnerships If you're seeking a skilled, reliable, and forward-thinking full-stack developer to bring your ideas to life, I'm here to help. Let's build something amazing together. 📩 𝗙𝗲𝗲𝗹 𝗳𝗿𝗲𝗲 𝘁𝗼 𝗿𝗲𝗮𝗰𝗵 𝗼𝘂𝘁 𝘁𝗼 𝗱𝗶𝘀𝗰𝘂𝘀𝘀 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝘁𝗼𝗱𝗮𝘆. Thanks!

You need a real engineer - not a no-code automation guy. I build production AWS systems that scale. I'm Kamran, an AWS-specialized Full Stack Engineer with 5+ years delivering SaaS platforms, serverless backends, and AI-integrated applications - all built natively on AWS. --- 🏆 What I've delivered: - SaaS platforms with multi-tenancy, billing, and RBAC on AWS - AI-powered chatbots and automation using Bedrock, Lex, Comprehend, Polly, Textract - Browser automation systems with Playwright running on ECS Fargate + SQS - Document intelligence pipelines - extract, summarize, classify at scale - Enterprise HCM platforms serving Middle East organizations on AWS - Infrastructure as Code with CDK - clean, auditable, repeatable --- 💡 You should hire me if: - You're building a SaaS product and need solid AWS architecture - You need AI features built into your product - chatbots, document processing, summarization, transcription, ai processing - You want serverless that actually works in production, not just demos - You need an engineer who owns the problem end to end --- 🔹 AWS Stack: Lambda · Step Functions · CDK · API Gateway · DynamoDB · Aurora · Cognito · EC2 · ECS · ECR · S3 · SQS · SNS · EventBridge · IAM · Bedrock · AgentCore · Lex · Comprehend · Textract · Polly · Transcribe · Rekognition · CloudWatch · Amazon Connect · AgentCore · RDS · ElastiCache · Athena · Glue · Kinesis · Redshift · VPC · Route 53 · CloudFront · ACM · WAF · Secrets Manager · Parameter Store 🔹 Supporting Tech: Node.js · NestJS · Python · FastAPI · React · Next.js · PostgreSQL · Kafka --- Quality, Commitment, and Trust — on every project. 📩 Tell me what you're building. Let's ship it on AWS.

🚀 Need a QA expert who does more than just “testing”? I help SaaS, E-Commerce, and AI companies fix flaky automation, secure authentication flows, and deliver stable, release-ready applications. When tests are unreliable, CI is failing, or bugs escape to production — I fix the root cause, not just the symptoms. 🔍 What I Specialize In: • Flaky Playwright/Selenium test stabilization • CI/CD pipeline reliability (GitHub Actions, Jenkins) • Critical flow testing: Authentication, APIs, onboarding, payments • Security-focused QA: OAuth, JWT, WAF, Burp Suite, input validation • SaaS & E-Commerce end-to-end testing 🔧 Core Skills: • UI Automation: Playwright, Cypress, Selenium, WebdriverIo • API Testing: Postman, Hurl • Security: OAuth, JWT, WAF, Burp Suite, access control • CI/CD: GitHub Actions, Jenkins • Reporting: Jira-ready, developer-friendly bug reports 📊 Proven Results: • 80% reduction in test execution time • Fixed CI failures from auth/session handling • Identified high-risk API & authentication bugs pre-release • Improved release confidence for SaaS & E-Commerce platforms 🤝 My Approach: • Focus on business-critical risks, not just test cases • Clear, actionable reports • Help teams release faster with confidence Ready to stabilize your QA pipeline? Invite me to your job post — let's discuss how to secure your next release.

I'm a rare mix: a full-stack engineer who also builds and scales anti-detect, multi-account, and automation systems, and actually worked inside the tooling as a developer at Multilogin. With 5+ years of hands-on experience, I specialize in Java/Spring Boot, Angular, and modern full-stack development, delivering clean architecture, optimized performance, and production-ready systems. ✔What I bring to your project: • Robust REST APIs & Microservices (Spring Boot, JPA, Security) • Scalable Frontend Applications (Angular, Vue, MERN/MEAN) • Secure Authentication Systems (JWT, OAuth 2.0, SSO, Azure AD) • High-performance Database Design & Optimization (MySql, MSSql, MongoDB) • Seamless API Integrations & Messaging (RabbitMQ, Azure service bus) ✔AI & LLM Integrations • RAG systems • Claude, GPT & multi-LLM integrations • n8n AI workflow automation • Custom AI chatbots & assistants • AI + backend integration (Spring Boot APIs) • Document AI (PDFs, invoices, data extraction) • AI-powered internal tools & dashboards ✔Anti-detect & multi-account specialist, Multilogin developer • Anti-detect browser & cloud phone setups • 100+ accounts, zero cross-linking • Fingerprints & proxy configuration • Account warmup flows • Secure automation & web scraping ✔How I Work (This is what sets me apart) • I don’t just code features, I think in systems and long-term impact • I identify potential issues before they become expensive problems • I focus on clean architecture, not quick hacks • I communicate clearly, no confusion, no guessing • I deliver work that you won’t need to redo later ✔Why clients choose me: • Clean, maintainable, and efficient code • Strong focus on performance & scalability • Clear communication & fast response time • Reliable delivery, on time, every time If you’re looking for someone who can build it right the first time, not just “make it work”, let’s talk. Keywords : Java, Spring Boot, Spring Security, Hibernate, JPA, REST API, Microservices, RabbitMQ, Azure Service Bus, Angular, Vue.js, React, TypeScript, MEAN stack, MERN stack, full-stack development, JWT, OAuth 2.0, SSO, Azure AD, Keycloak, MySQL, MSSQL, PostgreSQL, MongoDB, database optimization, Docker, AWS, Azure, CI/CD, API integration, LLM integration, RAG, OpenAI API, Claude API, GPT integration, AI chatbot, AI agent, n8n, workflow automation, document AI, PDF extraction, AI automation, LangChain, Multilogin, GoLogin, AdsPower, Dolphin Anty, Octo Browser, Kameleo, antidetect browser, browser fingerprint, anti-detection, residential proxy, mobile proxy, SOCKS5, browser automation, Selenium, Puppeteer, Playwright, web scraping, multi-account automation, account warmup, multi-accounting, ad verification