Expert Software Developer with 30 years of proven experience. Expert on Telephony, Streaming, MVC and Web Services and Alexa Skills. Expert Loan Origination Expert - Encompass, Calyx Point, Avista. Integration of these with other applications. Also team of expert loan processors available. Expert Kronos Consultant on UKG Pro, Pro WFM, WorkForce Dimensions, WorkForce Ready and WorkForce Central. Expert Workday Consultant on Soap, REST, RASS and WQL. SetUp and Configuration of Security Profiles and Implementations. Deep knowledge of UKG Kronos API and Setup and Configuration. More details here - mcl.in/ukg

My primary skill is web and desktop automation. Over the last 15 years, I have developed a wide range of applications using Python, PHP, C#, Google Apps Script, different APIs, frameworks, Zapier, Make etc. Most of my work is done using Python but I can work with Perl, C#, PHP, VBA, VB.NET too. Also I have worked a lot with Zapier and some of my workflows / zaps are really complex: including dozens of steps and different APIs / app. I have created several hundreds of web scrapers, spiders and different parsers (CSV, XML, XSLT, JSON, text logs etc). I can work with different database engines (MySQL, Postgres, MS SQL Server etc) and other output formats (CSV, Excel, XML, JSON). Usually my work starts with a simple (and free) demo version which my client can evaluate. My rates are not the cheapest but my code is really good and I'm always prioritize code quality over cost, resulting in robust and maintainable solutions.

As a seasoned freelance programmer with a strong foundation in security and Unix systems, I bring a wealth of expertise to the realm of software development. With a passion for tackling complex challenges, I specialize in full-stack development, reverse engineering, and imparting knowledge through tutoring. Technical Proficiency: - Programming Languages: Proficient in a diverse range of languages including Python, Java, Ruby, Perl, C, JavaScript, and more! - Security Expertise: Extensive experience in identifying and mitigating security vulnerabilities. Adept at conducting penetration testing, threat modeling, and implementing robust security measures. - Unix Mastery: In-depth understanding of Unix-based systems, with a focus on Linux. Capable of optimizing system performance and ensuring the security and stability of Unix environments. Full Stack Development: - Frontend: Skilled in crafting responsive and user-friendly interfaces using HTML, CSS, and JavaScript frameworks such as React and Angular. Backend: Experienced in developing scalable server-side applications with proficiency in Node.js, Django, and Flask. Database Management: Proficient in designing and implementing databases using MySQL, PostgreSQL, and MongoDB. Reverse Engineering: - Binary Analysis: Expertise in reverse engineering and analyzing binaries to uncover vulnerabilities and enhance software security. Tutoring and Mentorship: - Educational Background: Possessing a comprehensive understanding of programming fundamentals, security concepts, and Unix systems, I am adept at conveying complex ideas in an accessible manner. - Mentorship: Committed to fostering the growth of aspiring developers through personalized guidance, code reviews, and hands-on mentorship. Additional Skills: - DevOps: Proficient in implementing CI/CD pipelines, containerization (Docker), and orchestration (Kubernetes) for streamlined development and deployment processes. - Networking: Knowledgeable in networking protocols, firewall configurations, and VPN setups to ensure robust and secure communication. - Cloud technologies: AWS, GCP, and Azure. Professional Approach: - Problem Solver: Known for my analytical mindset and creative problem-solving skills, I thrive in dynamic environments and excel at finding innovative solutions to intricate challenges. - Collaborative Team Player: Effective in cross-functional collaborations, I communicate technical concepts to both technical and non-technical stakeholders, fostering a cohesive and productive working atmosphere. With a commitment to continuous learning and a track record of delivering high-quality solutions, I am well-equipped to contribute to projects requiring a versatile and experienced freelance programmer with a focus on security and Unix environments.

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.

Senior Full-Stack Developer • Performance Optimization Expert Java, Kotlin, JavaScript (frontend/backend), C++, Python, PHP, Perl SQL/NoSQL, Web/Desktop apps, Automation, Web Scraping I help companies make their software faster, lighter, and more efficient. 20+ years of hands-on experience in system performance tuning, profiling, solving bottlenecks, and refactoring legacy systems. If your application is slow, unstable, memory-hungry, or needs deep analysis — I can fix it. ⸻ 🧩 My Core Expertise • Performance optimization (Java/JVM, databases, backend services) • Query optimization, memory leak detection, code profiling • Refactoring legacy code, stabilizing old systems • Full-stack development (Java/Kotlin + JS, Python, PHP, Perl, C++) • Web automation & scraping • Systems analysis, debugging, complex issue resolution ⸻ 🚀 What I Deliver • Faster request processing • Reduced memory & CPU usage • Significantly improved database performance • Clean, maintainable, well-structured code ⸻ 🤝 Availability Open to long-term or part-time collaboration (30–40 h/week). Also interested in innovative startups: your idea — my implementation. ⸻ Let’s make your software fast, stable, and scalable!

Senior Software Engineer | AI Integration & LLM Systems | AI Video Pipelines | Full-Stack & Technical Consulting I build things most developers can't — from production AI agents and LLM pipelines to real-time video processing infrastructure, WebRTC systems, and full-stack web applications. With 22+ years of hands-on engineering experience, I operate across the full stack of abstraction: from x86/ARM assembler up to React/Next.js, and everything in between — including the cutting edge of applied AI. Where I add the most value: AI Integration & LLM Systems — My current primary focus, and one of the fastest-growing needs on the market. I design and build practical AI systems that go beyond API wrappers: autonomous code agents, voice recognition pipelines, LLM integrations using LlamaCpp and HuggingFace, Retrieval-Augmented Generation (RAG) architectures, and reinforcement learning feedback loops. If you have an existing product and need AI capabilities embedded into it properly — not bolted on — this is where I thrive. AI-Powered Video Pipelines — A rare combination: deep AI knowledge paired with deep video engineering expertise. I build the infrastructure behind AI video tools — real-time processing, generation pipelines, and streaming architectures using FFmpeg (API and CLI), Media Foundation, and custom SDKs. Whether you're building an AI video editor, a live AI-enhanced stream, or a 250–360° panoramic solution, I can own the full pipeline from capture to output. WebRTC & Real-Time AI — Real-time communication systems enhanced with AI capabilities: live transcription, translation, moderation, and analysis. Proficient in WebRTC end-to-end, with the AI layer built in from the ground up rather than patched in afterward. AI Chatbot & Agent Development — Building production-grade conversational agents and autonomous systems with custom backends, memory, tool use, and real integrations — not no-code wrappers or off-the-shelf demos. Technical Leadership & Team Consulting — Sometimes the most valuable thing a project needs isn't more code — it's the right direction. I help clients assess their engineering teams, audit existing codebases, and evaluate software stacks and architectures before committing to a costly build. Whether you're choosing between competing technology approaches, need an independent expert to validate a technical decision, or require a fractional technical lead — I can step in as a trusted advisor. I also form and coordinate small teams of specialists when a project scope requires it, matching the right engineers to the right problems. Low-Level & Systems Programming — Custom HTTP servers, Nginx modules, WebSocket implementations, eBPF, ICMP and raw IP protocols, OS kernel work, and hardware device drivers. This foundation is what allows me to optimize AI inference performance and video pipelines at a level most engineers simply can't reach. Cross-Platform Native Development — 12 years with OpenGL, plus Metal, Vulkan, and DirectX across macOS, iOS, Windows, and Linux. Experienced with Raspberry Pi and embedded/specialized devices. Web & Full-Stack — 15 years of JavaScript (React, Next.js, TypeScript, Node.js, Three.js, WebGL), 10 years of PHP (Laravel, CakePHP, MySQL), and Python/FastAPI for backend services. Additional languages & tools: C# / MSSQL, Java, Python, Qt/PyQt, Perl — all with 5+ years of production use. I'm equally comfortable building an AI agent from scratch, architecting a real-time video pipeline, advising a CTO on a critical technical decision, or assembling the right team to deliver a complex product. If your project sits at the intersection of AI and real engineering — not just prompting — let's talk.

I have 12+ years of experience in SQL Server 2008/2012/2016 for database handling, database maintenance, and report generation using SSIS and SSRS. I have also worked on Oracle Eloqua, HubSpot, Salesforce, Saleslogix, and Salesforce Marketing Cloud (SFMC) for marketing automation, CRM operations, campaign execution, and reporting. In addition, I have experience with Snowflake Cloud and D365 CRM cloud data migration, along with hands-on work in web scraping, data extraction, and tracking using Perl, Python, and JavaScript. Marketing Automation / Digital Marketing: 1. End-to-end email campaign execution and deployment 2. Landing page, form, and campaign asset creation 3. Lead nurturing and automated workflow support 4. Audience segmentation and personalized targeting 5. Campaign operations, testing, and scheduling 6. Quality assurance and troubleshooting support 7. Social media and integrated digital campaign assistance 8. Campaign reporting, tracking, and optimization support Data Cleansing/Data Entry: 1) Automated Data cleansing form Data entry tools and also done de-duped with Fuzzy string match. 2) Automated Data entry work via Excel, Python and Perl. Data Scraping Projects in Python/Perl: 1) Scarped and verified company information with site(:) concept using different search engines (Google,bing,etc) 2) Collected Management and Board Members details from different websites through keywords provided. 3) Extracted More than 200K data from multiple directories using Membership login and URL framing. 4) Extracted Job Listing information from different Job portals with Email scrapping. 5) Extracted Automobile parts information from different websites using part numbers. 6) Handled firewall protection and blocking issues using web proxies and Proxy IP rotation. 7) Scrapped Ajax websites with JSON File content 8) Windows job scheduled done to scrape data every day and stored into SQL tables. MS SQL Server 2008R2/2016 | SSIS | SSRS| D365 CRM | Snowflake Cloud: 1) Developed Data Warehouse for SSRS Reporting by integrating CRM data, ensuring efficient reporting capabilities. 2) Implemented Business Logic using stored procedures and functions to streamline operations and improve accuracy. 3) Optimized Queries and resolved performance issues in complex joins and queries to enhance data processing speed. 4) Revamped Legacy Procedures, simplifying them based on updated business logic to improve maintainability and performance. 5) Conducted SQL Code Reviews to ensure new business rules were integrated without disrupting existing logic. 6) Worked on Snowflake Cloud to integrate data from multiple sources (Oracle, MySQL, Postgres, Vertica) for a unified reporting platform. 7) Utilized SSIS Fuzzy Match and Token Algorithms for data clustering and de-duplication, ensuring data quality. 8) Migrated HubSpot Data to CRM via Python and SSIS, supporting the development of new marketing strategies. 9) Extracted Zoom Data (meeting ID, registrants/participants) using Python and SSIS, presenting key metrics in dashboards. 10) Developed Sales KPIs in SSRS to support sales and R&D teams in meeting targets. 11) Deployed SSIS and SQL Procedures via SQL Server Agent with XML configuration and Integration Service Catalog. 12) Implemented Exception Handling with automated email alerts to ensure issue detection and resolution. 13) Automated Monthly Report Creation in SSRS, providing management and business development teams with real-time sales insights. 14) Over the course of a few days, we dedicated our efforts to establishing a seamless connection to CRM Dynamics using an SSIS package. We explored the process of creating API credentials for connecting to Dynamics CRM through the KingswaySoft tool in SSIS. After extensive testing and validation, we successfully established the connection and began transferring data from CRM Dynamics to MS SQL Server. Additionally, we integrated the data into a new, centralized Dynamics database, ensuring that all entities from CRM Dynamics were accurately loaded. 15) Replicated Snowflake Data Across Regions and created stored procedures for task scheduling and business logic implementation.

- 🛠️ macOS/iOS Development: 10+ apps shipped using Swift/Swift UI/Objective-C - 🤖 VBA Automation: Delivered various macros/automation for clients. - 🚀 Full-Stack Capability: Type Script & Python (Flask/Django) & C++ backend integration Technical Arsenal: 🖥️ macOS/iOS Development - Swift/Swift UI: 10+ years, 10+ apps shipped - Objective-C: Legacy system migration expertise - Core Frameworks: AppKit, Core Data, Combine - macOS Code Signing and Notarization 🤖 Automation Engineering - VBA: 10+ years, enterprise-grade solutions - AppleScript: Seamless macOS integration - Python Automation: Selenium, Pandas integration ⚙️ Backend & Integration - Python: Flask/Django REST APIs - C++: High-performance computing modules - Cloud Integration: AWS S3, iCloud Sync My Commitment to Clients: I don't just write code - I deliver solutions that drive real business results. Whether it's automating tedious workflows or building mission-critical macOS/iOS applications. Let's build something extraordinary together.

🏆 $3M+ Earned on Upwork — Placing Me Among a Very Small Percentage of Freelancers on the Platform Looking for a veteran full-stack web development team to bring your CMS, CRM, ERP, SaaS, marketplace, or data platform to life? We don’t do quick hacks or throwaway code. We build systems that last. We are a senior team of full-stack engineers with 25+ years of hands-on web development experience and 600+ successful projects delivered across 40+ industries. We focus on long-term, production-grade systems where architecture, performance, and business logic truly matter. We operate as web developers, React developers, WordPress developers, mobile app developers, and backend engineers, delivering full-cycle product development using PHP, JavaScript, and Python. Our stack includes Laravel, Symfony, Vue, React, Angular, Node.js, Next.js, TypeScript, jQuery, MySQL, PostgreSQL, Redis, and modern API-first architectures. Whether you need a full-stack developer (PHP, JavaScript, Python), a Python full-stack developer, or a PHP Laravel Angular combination, we cover the entire lifecycle end to end. As front-end full-stack specialists, we build high-performance dashboards, SPAs, PWAs, and data-heavy interfaces using React, Vue, Angular, Next.js, and TypeScript. Our React team focuses on performance, scalability, and UX logic, while our backend engineers design robust systems with REST and GraphQL APIs, multitenant architectures, role-based access control, billing engines, reporting pipelines, and audit trails. We also work as software developers and full-stack AI engineers when projects require machine learning, automation, or advanced data processing. Our Python full-stack teams build data pipelines, AI-assisted workflows, and automation systems that reduce operational overhead and deliver measurable business value. This includes AI-enabled backends, LLM integrations, and ML-driven platforms. As WordPress developers, we build custom plugins, headless CMS architectures, and React or Vue frontends. As mobile app developers, we deliver iOS and Android applications using React Native and native stacks, tightly integrated with scalable backends. As PHP full-stack developers, we handle both greenfield builds and complex legacy modernization. We regularly work as: - full-stack web development teams on SaaS, ERP, CRM, POS, LMS, and Web-to-Print platforms - full-stack squads on marketplaces, fintech, and data platforms - Python full-stack teams on automation and analytics pipelines - PHP Laravel Angular teams on enterprise systems - React and front-end full-stack teams on complex UI platforms - full-stack AI teams on ML-powered products Our experience includes: - 100+ SaaS and CRM platforms launched from scratch - 300+ automation tools built - 150+ POS, Web-to-Print, and location-aware applications delivered - platforms serving 20M+ users with 99.99% uptime - ERP systems reducing operational overhead by 40%+ - web automation saving 1,000+ hours per month per client We handle the full spectrum: system architecture, development, DevOps, CI/CD, Docker, AWS, GCP, Apache, Nginx, and long-term maintenance. We design systems that scale in production, survive real-world usage, and support sustainable business growth. Whether you need a web developer to extend your platform, a React developer to rebuild your frontend, a WordPress developer for custom CMS logic, a mobile app developer to complement your product, or a full-stack AI team to connect data, automation, and intelligence, we bring decades of hands-on experience and production-grade delivery.

I'm a highly skilled backend developer with over 15 years of experience delivering innovative solutions. My core expertise lies in Perl and Python, but I'm also proficient in Go, C#, PHP, VB and C++. Recently, I've been focusing on building robust backend systems using .NET Core and Golang. I have strong database knowledge (MySQL, Oracle) and a passion for crafting clean, efficient, and maintainable code.