Data Engineer From 2021 till date - to design, develop, and maintain scalable data pipelines and workflows using Python/Perl, MySQL, Flask API - to integrate data from multiple sources into data warehouses and lakes, ensuring quality and consistency; - to monitor, troubleshoot, and optimize data workflows and ETL processes; - to collaborate with analysts, engineers, and product teams to understand data requirements and implement solutions; - to ensure data security, compliance, and governance standards are met; - to participate in code reviews and maintain high engineering standards; - to stay current with emerging data engineering technologies and recommend improvements to enhance data platform quality and scalability. Website Developer - 2011 to 2017 Perl CGI developer in a UK based company. Data Scraper - 2019 till date working as a part time consistent data scraper using Perl techniques

Seasoned technology professional with 20+ years of comprehensive expertise in Linux systems, SQL databases, Perl programming, and data transformation and analysis. Proven ability to write, optimize and troubleshoot complex SQL queries.

Freelance programmer, bachelor of Computer Science, with several decades of programming experience (since 1999), from backend programming (Perl, PHP, nodejs) to front end (HTML/js/ts). Main strengths: - vast area of expertise, from backend to frontend programming using several platforms and their combinations. - fast turnaround (usually same day - if I available - free from current tasks). Flexible in times and terms. - long term support for completed projects (one month free tech support including small design fixes, free bug fixes ) Main skills for now: - Building a browser based web apps on React, Vue js , Angular, mainly visualization oriented projects - 2d,3d, force graphs, tree graphs, complex combined graphs, dashboards...many more) - using mainly D3.js and Three.js. Over 8 years of experience with over 100 completed projects in this area (some are available online, some shown as screenshots) - backend programming (Perl, PHP), with common stacks (Apache and other web servers, Mysql, SQlite, PostgreSQL, MongoDB, NoSQL and some other dbs). - over 15 years of experience (past years) Have some experience working on multi-platform desktop software applications (using Qt library, targeted more for Linux platform). I use AI where this is justified way and helps to speed up development. Also can help fixing various AI generated errors and problems in code.

I have more than 14+ years of experience building Hospitality, Education, Healthcare, E-commerce, and Enterprise Software Solutions. My expertise includes Property Management Systems (PMS), Channel Managers, Booking Engines, OTA Integrations, Price Comparison Engines, Reservation Systems, School Management Systems, Healthcare Management Platforms, and E-commerce Synchronization Solutions, API development/implementation and Backend process management. I have strong experience in API Development, API Architecture, and Third-Party Integrations. I have developed custom APIs and integrated 200+ travel, hotel, payment gateway, CRM, and business APIs, including Booking, Expedia, Airbnb, Tripadvisor, Trivago, Google Hotels, Hotelbeds, and various payment providers. In the hospitality domain, I have developed real-time Channel Management Systems that synchronize reservations, rates, and inventory across multiple OTAs to prevent overbookings and ensure accurate availability updates. I have also built Booking Engines, Widgets, and Hotel Distribution Solutions used by hotels to manage inventory, pricing, reservations, and direct bookings.

🏆 Top Rated Plus (Top 1% Upwork talent) ☕ Started working as web developer in 1999 🔥 Expertise in front-end, back-end, and server administration 🔐Always keeping in mind security and productivity aspects 🎓Master and bachelor degrees in computer science Let's make your project successful! 🚀🚀🚀

A Techno commercial professional working as a Senior Business Development Manager. Responsibility includes collaborating with the clients to gather the business specifications, improving the scope in terms of technicality and user experience by offering suggestions on scope and latest technologies and furnishing clients with all required information about the services offered, my area of expertise, the processes being followed and all other required information related to the project to help make clients an informed decision Open Source: PHP 5, PHP 4, CGI/Perl (Mod_perl/ ActivePerl/ ePerl), Python, Moodle IPhone, Mobile & Handhelds: Apple iPhone development using Xcode and Objective C, Blackberry, Google Android, Microsoft Windows Mobile, J2ME platform CLDC1.1, MIDP1.0, MIDP2.0, Windows7 Phone, Android tablet, Blackberry Playbook. Microsoft Technologies: C#, VB.NET, Visual Studio .Net 2003 / 2005/ 2008, SharePoint services 3.0, MOSS 2007, MOSS 2010, ASP, ISAPI/NSAPI, ASP.NET 1.1/ 2.0 / 3.0 / 3.5. Crystal Reports, SQL Reporting, Microsoft Azure, Silverlight, Microsoft Office Live. Frameworks & CMS: Moodle, Magento, Joomla, Drupal, WordPress, CakePHP, Zend, Symphony, CodeIgniter, OSCommerce, DotNetNuke, ASPDOTNETSTOREFRONT, BVCommerce, CheeryPy, Django, Zope, Plone, Movable Type, CMS Made Simple, TYPO3, CREloaded,Zen Cart,Xcart, Big Commerce, Rainworkx,Sugar CRM,Vtiger. Internet Marketing: Search Engine Optimization, Pay per Click Management, Social Media Marketing, Brand Reputation Management, Social Network Marketing, Content Copywriting, Link Popularity Development and SEO Consultancy for under development sites and portals. Flash & FLEX: Adobe Flash CS4, Adobe Flex, Flash Action scripting (AS 3.0), Flash Gaming, Flash Media Server, Flash Remoting, Rich Internet Applications (RIA), Adobe AIR. User Interface / Graphic Design: Adobe Photoshop, Image Ready, Flash, CorelDraw, Adobe AfterEffects, Fireworks, HTML, XHTML, Dreamweaver. Databases:Oracle, Sybase, MS SQL Server 2000 / SQL 2005 / SQL 2008, MS Access, Postgresql, MySQL 4.x/5.x, NoSQL. Operating Systems: Windows 2003/2008 .NET Server, Linux , Unix, Windows 95, Windows 98, Win ME/XP and Windows NT/2000. WebServer: IIS, Apache, RedHatSecure. Cloud Servers: Amazon EC2, Windows Azure. Third Party APIs: Foursquare, Dimdim, Google Maps, Flickr, Slideshare, Twitter, Facebook, LinkedIN. Miscellaneous: AJAX, XML, JavaScript, Application development for Facebook and Twitter, PayPal integration, Google checkout and other Payment Gateway integration, Database Administration.

🌟 Expert-Vetted Talent - Recognized in Upwork's top 1% of Talent ✅ Established Track Record of Hours and Earnings 🚀 Fastest Response Times 💯 100% Job Success Awarded by Clients 🔝 Top Rated Plus by Upwork, Freelancer and Agency 🔎 Searching for New Opportunities and Problems to Solve Hello and welcome, thank you for considering me for your project. My Upwork profile’s stats clearly demonstrate both my expertise and the value I add to every team that brings me on. The thousands of hours clocked on this platform alone speak to my years of experience in Software Development, and the total earnings shows a glimpse of how valuable that time has been for clients. I am available and ready to answer specific questions about your project’s current problem, next opportunity, or my fit for it. Shall we get to work? Send a message or an invite now and I will be right with you. 𝐖𝐡𝐲 𝗖𝗹𝗶𝗲𝗻𝘁’𝘀 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞: 1. 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗮𝗻𝗱 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: Decades of experience bring a deep understanding of various languages, frameworks, platforms and tools, common and uncommon pitfalls, and alternative solutions. 🗯️ “He was very responsive to our messages and explained what was needed in our project clearly. He is definitely an expert in his work.” 2. 𝗘𝗳𝗳𝗲𝗰𝘁𝗶𝘃𝗲 𝗣𝗿𝗼𝗯𝗹𝗲𝗺 𝗦𝗼𝗹𝘃𝗶𝗻𝗴: I have a proven track record and knack for solving complex problems and providing customized solutions for specific business needs and challenges. 💭 “Isaac was able to quickly discern what I needed and delivered…” 3. 𝗦𝘆𝘀𝘁𝗲𝗺 𝗩𝗶𝗲𝘄 𝗮𝗻𝗱 𝗖𝗼𝗺𝗽𝗿𝗲𝗵𝗲𝗻𝘀𝗶𝗼𝗻: Years of experience and diverse projects have helped me accumulate a broad set of skills and tools. I use this experience to the advantage of my client’s projects in not only accomplishing tasks, but in advising and consulting on potential challenges and opportunities. 💬 “LIFE SAVER!!! I have now use(d) Issac for two separate jobs now and will be bringing him on for some regular hours. Hopefully we get some funding and I can do even more with him. GREAT DEVELOPER” 𝐌𝐲 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: Python|Django|PHP | MySQL | Laravel | WordPress | CodeIgniter | ExpressionEngine | CSS | HTML | JavaScript | Express.js | React.js | Bootstrap | PostgreSQL | NoSQL | Linux | Apache | Nginx | API | Git | SVN | Amazon Web Services | AWS EC2 | 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝗜 𝐎𝐟𝐟𝐞𝐫: 𝐅𝐫𝐨𝐧𝐭 𝐚𝐧𝐝 𝐁𝐚𝐜𝐤-𝐄𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Planning, Design, Documentation, Coding, Testing, Debugging, Deployment, Monitoring, and Maintenance. 𝐒𝐲𝐬𝐭𝐞𝐦 𝐀𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧: Cloud infrastructure Design, Deployment, Optimization, Maintenance, Scaling, Recovery and Backup, Troubleshooting, and Cost Management. 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 Management: Architecting, Optimization, Monitoring, Recovery, Updating, and Merging. 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: Planning, Project Requirements, Task Detailing, Developer Support and Feedback, Problem Resolution, Progress Monitoring, Qualification Testing, and Stakeholder Communication.

PHP / Core PHP / Custom PHP / CodeIgniter / Laravel / LAMP MySql / MariaDb / MongoDB / Neo4j Javascript / jQuery / Puppeteer / Node.js / Vue.js / React.js / Next.js / React Native Python / Django / Flask / Selenium HTML5 / CSS3 Stripe / Stripe Connect / Paypal / Quickbooks Online Airtable / Smartsheet OpenAI GPT-3 / DALL-E API IoT / MQTT Google Maps / ArcGis D3.js / Chart.js / Echarts / Highcharts / Google Charts / Plotly.js AWS Heroku Firebase GSuite / Google Apps Script / Google Cloud Platform / Google Cloud Functions / Google Cloud Firestore / Google Docs API / Google Sheets API / BigQuery Wix.com / Webflow / Hocoos / Low Code / No-Code / FlutterFlow Qualtrics / SurveyGizmo / Alchemer / SPSS Zapier / IFTTT / Integromat / Make.com / n8n Zoho CRM / Zoho Inventory / Zoho API / Zoho Creator Klaviyo / Pipedrive / Zendesk / Freshdesk / Reamaze / Gorgias / Neon CRM / Arengu / Customer.io / Smartlead / Instantly / EmailBison / GoHighLevel / HeyReach / Woodpecker ShipStation / Shopify Video.js / HLS.js / Dash.js / VAST DRM / Fairplay / Widevine / Playready Android / Java / XML / JSON iOS / ObjectiveC / CoreData / Push Notifications FlutterFlow Windows Powershell Perl / Ruby Facebook API / Twitter API / Tweepy / YouTube API / Instagram API / Mandrill API / Braintree Payments Bitcoin / Cryptocurrency Adobe Animate

👋 Looking for a powerhouse full-stack engineer who can bridge Python-based AI innovation with Java-backed enterprise performance? I bring 25+ years of professional full stack software development experience-combining backend architecture, enterprise Java systems, AI/ML engineering, and modern frontend frameworks into scalable, data-rich applications for finance, healthcare, retail, manufacturing, and government sectors. With over 100 full-stack systems delivered, I've built mission-critical platforms and real-time analytics engines handling millions of events per day, while reducing operational costs by up to 65% through infrastructure optimization. 🏆 Why Work With Me? ✔️ 25+ years of enterprise-grade software development ✔️ 40+ Python projects using AI/ML for analytics, automation, and computer vision ✔️ 60+ Java systems modernized to Spring Boot, AWS & microservices ✔️ Built backend systems serving 10M+ users monthly ✔️ AI-based fraud detection systems with 98%+ accuracy ✔️ Scaled apps to handle 1M+ real-time events/second using Kafka, EventBridge, and Spark ✔️ Healthcare-grade imaging tools for tumor classification (TensorFlow + OpenCV) ✔️ 50+ legacy migrations from J2EE/Struts to microservices ✔️ Deployed full-stack apps across 20+ industries, including fintech, eCommerce, telecom, and eLearning ✔️ CI/CD pipelines & Dockerized monorepos for faster dev cycles and better team velocity 🧠 Tech Stack & Core Skills 🖥️ Languages: Python, Java, TypeScript, JavaScript, HTML5, CSS3, SQL, Shell Scripting 🧠 Python AI/ML & Automation: TensorFlow, PyTorch, OpenCV, Scikit-learn, NumPy, Pandas, Matplotlib AI Workflows | Computer Vision | Predictive Analytics | Data Pipelines | Image Recognition | Fraud Detection Automation using Python + Selenium, BeautifulSoup, Scrapy ☕ Java Enterprise Stack: Spring Boot, Spring Cloud, Hibernate, Akka, Play, Grails Java Microservices | RESTful APIs | SOAP | JMS | JPA | Quartz | Lombok Legacy Refactoring | J2EE → Spring Boot | Tomcat | WildFly | WebLogic 📊 Frontend (Full-stack Scope): Angular.js, Vue.js, React.js, Next.js, Svelte Tailwind, Bootstrap, Material-UI | JSP | Thymeleaf | JSF | EJS SPA Development | SSR/ISR | Responsive UI | Webpack, Vite, Gulp 📦 DevOps & Cloud: Docker, Kubernetes, AWS (Lambda, SageMaker, EC2, S3, Kinesis, RDS), GCP, Azure CI/CD: Jenkins, GitLab CI, Travis, Ansible, Terraform Infrastructure as Code | Monitoring | Cost Optimization 📚 Data & Databases: PostgreSQL, MySQL, Oracle, MSSQL, SQLite, MongoDB, Cassandra, Dynamo DB Elasticsearch, Redis, Kafka, RabbitMQ, GraphQL, REST APIs 📌 Python & AI-Focused Solutions 🔹 AI-Based Automation for Workflow Optimization 🔹 Real-Time Object Recognition & Computer Vision Systems 🔹 Predictive Analytics for Retail, Logistics, and Healthcare 🔹 NLP Chatbots and Intelligent Assistants 🔹 Data Crawlers & Scrapers for eCommerce & SEO 🔹 Data Normalization Pipelines Handling 1TB+ Datasets 📌 Java & Enterprise Software Development 🔹 Full-stack Java + Angular/Vue platforms 🔹 Spring Boot Microservices for Finance, Healthcare, SaaS 🔹 Event-Driven Architectures with Kafka & Redis 🔹 Secure Auth (JWT, OAuth2, LDAP, SSO, 2FA) 🔹 Migrating Monoliths to Microservices (Cloud-Native Refactors) 🔹 Server-Side Java with JSP, JSF, and Servlet APIs 📌 Full-stack Projects Built from Scratch 🔹 Inventory Management System (Java + Vue + AWS) 🔹 Medical Diagnosis Dashboard (Python + Django + React) 🔹 Financial Fraud Detection Engine (PyTorch + Kafka) 🔹 Real Estate Listing Platform (Flask + Angular + PostgreSQL) 🔹 ERP Extensions for Manufacturing (Spring Boot + Thymeleaf) 💬 Results That Matter ✅ Built an AI-based inventory forecasting engine reducing stock outs by 42% ✅ Scaled a Java backend to handle 5M+ daily requests for a logistics app ✅ Migrated 3 legacy apps to AWS with 65% infra cost reduction ✅ Automated scraping workflows gathering 10M+ data points weekly ✅ Designed OCR pipeline (Python + Tesseract) for medical record digitization ✅ Delivered HIPAA-compliant image analysis tools with 95%+ detection accuracy ✅ Cut fraud risk 75% for fintech app using real-time anomaly detection 💼 Industries Served 🏥 Healthcare & Diagnostics 💳 Fintech & Insurance 🛍️ eCommerce & Dropshipping 🏗️ Manufacturing & Supply Chain 📚 EdTech & LMS Platforms 🛰️ Gov & Aerospace (including secure environments) 🏢 Enterprise SaaS & Internal Tools Let’s build the next enterprise success story together. 💬 Message me to discuss your backend, AI/ML, or full-stack project! 🧩 Let’s Build Something Powerful If you’re seeking a seasoned backend + full-stack expert who can turn complex business logic into reliable, scalable, and secure digital solutions - I’m your guy. ----------------------

Innovative, passionate, and quick software developer and architect with deep knowledge of programming concepts and internals. 24+ years of hands-on industry experience in programming, designing, managing, & leading software projects & companies. Change agent, problem solver with a passion for technology; skilled in grasping the big picture, conceptualizing, developing & implementing solutions by partnering closely with business leaders. Worked for different type of industries, which includes Health-care Informatics, Lab Informatics, MOOC, Online Education, ERPs, Electronic Design Automation (EDA), Semi Conductor, Heavy mechanical manufacturing, Travel, Pharmaceutical & e-commerce. Skilled in: AI Agents | AI Voice Agents | AI Automation | AI Solutions | Specialized Local Custom AI Models Python | PHP | Apex | Objective C | Java | C/C++ | Flex | ActionScript | JavaScript | Perl | VB6 iPhone SDK | Android SDK | BlackBerry SDK | Flex SDK | Sancha Django | Django REST | Odoo | Web2Py | Zope | Plone | Open edX | CodeIgniter | .NET | Java EE SQL Server | MySQL | PostgreSQL | Sybase | DB2 | SQLite | MS Access Odoo | OpenERP | Salesforce CRM | MS SharePoint git | SVN | CVS | VSS | Unfuddle Scrum | UP | UML | CASE Tools | Poseidon | Rambaugh OMT ASP.NET | ASP | Telerik Visual C++| MFC | Win32 | COM | DCOM | OLE | Multithreading ANT | JDK | Digester| Struts | Servlets | JSP | EJB | WebSphere | Eclipse Web 2.0 | AJAX | CSS | XML | XSD OpenSource | github Knowledge Management | MediaWiki | PHP Health-care Informatics | ICD9 | ICD10 | HIPPA | HL7 SEMI Standards | EFEM | SEMI E87 | SEMI E90 | SEMI E40 | Robotics | SECS/GEM | SCADA Customs ERP | Landing Cost | HS Codes | WTO Standards Lab Informatics | Bika | OLiMS | LiMS | LIS Windows | MacOS | Linux | Ubuntu | Unix | EC2 Windows CE | Micro Controller Programming | Dynamic C