"I have worked with Mukesh and his programmer team on over 10 web and mobile projects and they always deliver on time - even with tight deadlines and they provide constant daily updates to the code for testing - so you get daily work progress from them and they are quick to fix any issues you find during the testing process. I highly recommend hiring them."..... Andrew "Mukesh Gupta at Colonel Software was fantastic to work with. The speed of completion on their part was extremely fast as well as a great quality. They stayed with us and had a great amount of patience as we were delayed on the project for a little bit on our part, but they were very understanding and still delivered a fantastic product..... Zack Lester Colonel Software is a leading offshore custom software and web development outsourcing company, delivering IT solutions and services to clients across the globe.We provide solutions to enhance enterprise operations and ensure exceptional returns on investment (ROI). We are focused on learning and continuously improving our capabilities to drive improvements in quality and productivity for our customers.Our goal remains to work closely with our client needs and to provide high quality, result-oriented solutions for adding value to our customers. With Colonel Software's offshore development services, clients can expect to get a best balance of performance, increased return on investment and delivery timescales

who can fix critical issues quickly, boost performance, build scalable systems, and ship stable, profitable games, I can help. What I Deliver: End‑to‑end game development from prototype to launch and LiveOps 30–60% FPS improvement on low‑end devices through deep CPU/GPU profiling Up to 90% build size reduction using thin‑client architecture and remote delivery assets Crash‑resistant, modular, secure, unhackable code Performance tuning, memory optimization, loading time reduction Cross‑platform builds for iOS, Android, PC (Steam), WebGL How I Can Help Your Project: Fixing bugs, optimizing performance, refactoring legacy systems Designing scalable game, meta, core systems Adding new features quickly without breaking production Building and releasing games for Mobile, PC, Web, and VR Publishing to App Store, Google Play, and Steam Integrating Ads, IAP, analytics, Firebase, and third‑party SDKs Multiplayer and backend development: Photon (PUN/Fusion/Quantum), Nakama, Mirror, FishNet, Node.js, ASP. NET, Java Why Clients Choose Me: 11+ years of hands‑on Unity and C# experience Deep expertise in LiveOps, optimization, memory and frame‑rate tuning Strong multiplayer background: Photon, Mirror, SmartFoxServer Testing experience across a wide range of devices: iOS, Android, Oculus Quest, Mac Experience in both indie teams and AAA studios (3–100+ developers) Clean, maintainable code following SOLID, KISS, DRY principles Tools and Technologies: Unity: DOTS, Addressables, Zenject, Odin, DoTween, UniTask, UMA, Dialogue System, LevelPlay, Facepunch.Steamworks Backend: Nakama, Mirror, AWS, Firebase, PlayFab, Node.js Languages: C#, JavaScript, TypeScript, Go, Java Client Testimonials: “Delivers clean and bug‑free features fast. Very knowledgeable in Unity architecture and optimization.” “Helped us launch our game across platforms with LiveOps‑ready infrastructure. A+ professional.”

I am a software engineer who works for a security company creating both desktop and web applications that track the video severance and door lock throughout many companies in the world. I got my start working with Excel and Access applications and moved on to C# desktop applications, mainly WPF applications, I now working with web applications. I am vary strong with Sql Server, C#, Angular, Angular 2, Angular 9+, JavaScript, HTML 5, CSS, SASS. XAML and many more.

⚡️Enjoy top service and high quality work, ✨ I'm here to help you succeed. 💎 22+ years of experience I'm a developer with experience in building and deploying applications end-to-end. From front-end, to back-end, including database, user experience and interface, cloud architecture, test automation, etc. It doesn't matter the kind of requirement, problem that needs to be solved, or an entire project up and running, you can count on me. 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 𝑬𝒙𝒑𝒆𝒓𝒕𝒊𝒔𝒆: Web & Desktop Application Development (Frontend: HTML, CSS, JavaScript, React | Backend: PHP, Laravel, Node.js, Python) Mobile Application Development (React Native) Database Design & Programming (SQL, MySQL, optimization) 𝑲𝒆𝒚 𝑻𝒆𝒄𝒉𝒏𝒐𝒍𝒐𝒈𝒊𝒆𝒔: Frontend: HTML, CSS, JavaScript, React Backend: PHP, Laravel, Node.js, Python (Django, Flask) Databases: SQL, MySQL, PostgreSQL, NoSQL Mobile: React Native, Flutter Security: Data encryption, secure development 𝑰𝒏𝒅𝒖𝒔𝒕𝒓𝒊𝒆𝒔 & 𝑺𝒆𝒓𝒗𝒊𝒄𝒆𝒔: SaaS Development (Custom platforms, subscription models) API Development & Integrations Data Scraping & Automation Third-Party Integrations (QuickBooks, Stripe, PayPal, Twilio, AI integrations) 𝑺𝒆𝒓𝒗𝒊𝒄𝒆𝒔 𝑶𝒇𝒇𝒆𝒓𝒆𝒅: Full-stack development (Web, Mobile, Desktop) Database Design & Optimization Troubleshooting & Debugging Consulting & Project Management for enterprises With my extensive experience, I ensure that enterprise-level projects are delivered efficiently and meet business goals. I’m known for my attention to detail, problem-solving skills, and collaborative approach. Let’s work together to bring your project to life!

Do you need IT help for your business but find working with developers difficult? Are you struggling to achieve your business goals with the software you use? I'm here to take this burden off your shoulders so that you can focus on what you do best - your business. Programming, for me, is a tool only - not an objective itself. I will take care of all IT work and make sure it is aligned with your goals. Here are the ways I help companies thrive: • Building XML related systems — many times XML is the best choice for exchanging data, especially when you need to control the structure of nested nodes of data. I'll help you utilize the best of XML technology so it can effectively serve your business needs. • Design of tailored systems — when your business model that needs a boost with an automated, intelligent software. I'll work with you closely to understand the goals and build software that moves your productivity and profits to a completely new level. • Optimization of existing systems — when your software doesn't fully serve your needs. I'll transform it in the most effective way to keep all that is good in it and add the new value you are seeking. • Building a team - when you need to effectively achieve your IT goals. I'll find the best people that can achieve your goals within the budget and time. • Building a website - when you want to improve your online presence. I'll design a beautiful and fast website that brings you more clients and conversions. You will see a major increase in your productivity and profitability, your systems will start bringing you clients and money. With me, you get someone who understands your business and speaks your language - an honest professional whom you can trust. What clients say about my work: "Single handedly the best developer I have ever come across in my 15 years working in this industry. I cannot recommend Jacek enough. His professionalism, quality of work, delivery, communication are all of the highest quality. I will be putting more work Jacek's way." - Richard "I've already scheduled another project with Jacek. It's always a pleasure!" - Cheryl "Designed the page within my guidelines and requirements. Made front end elegant and functional. Back end was clean and user-friendly. Fantastic communication, extensive expertise. Will hire in future" - Vitold Technologies I work with: * XSLT, XPath, XML, XML Schema, exist-db, Apache FOP, Ibex, Xalan, MSXSL, Saxon, Dita, Docbook, EXSLT, XQuery, xsltproc, HTML5, XHTML, SVG, SpreadsheetML, WordProcessingML, lxml * GIS Systems: Google Maps, OpenStreet Maps, Gisgraphy, Geocoding, Leflet, Mapbox, FusionTables, OpenLayers, Geonames * PHP: PHP5, PHP7 * MySQL: optimisation, speed up, complex queries * API's: design and various integrations: Quickbooks, Expedia, Highrise, Airtable, Zapier, Google and many more, * JavaScript, ECMA6, React.js, Canvas * Drupal: Drupal 7, Drupal 8 * Wordpress * Apache SOLR * Chess: Stockfish, * ImageMagick, * CRM, * OSTicket Businesses I am usually a good match for: * Sport: tennis, chess, ski, freeride, snowboard, gym, fitness * Travel: booking engines, travel websites To take this chat to the next level, here's what you should do next: Let's see if we're the right fit. If you're looking for a tailored IT system for your business and a developer that will bring you a productivity boost and more results, we're aligned. To get the conversation started, hit the Hire Now button in the top-right corner. P.S. I travel a lot. No matter what country you are from, feel free to reach out - I may already know how to say 'hello' in your language! :) Jacek Francuz

AVAILABLE NOW! I have a Finance MBA, Project Management Professional Certification (PMP), and over 15 years of data analysis, data modeling, conversion, and building models, analytics, and dashboards using MS Excel and VBA. I also work with Google Sheets for data analysis and reporting. My focus is on Data Conversions, Dashboards, and Automation. Over 400 clients on Upwork have been happy with my work.

Hello 👋, I am Kanny Gill, a Top Rated Plus Shopify, WooCommerce, and WordPress Developer with 16+ years of experience building high-performing eCommerce stores, business websites, custom integrations, and scalable online platforms. I help brands, startups, agencies, and businesses launch, redesign, optimize, and scale online stores with modern design, smooth user experience, strong backend structure, and reliable functionality. My focus is simple: build stores that look professional, load fast, work smoothly, and drive sales. 🛒 𝗦𝗵𝗼𝗽𝗶𝗳𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 ✔ Store setup and customization ✔ Theme development and customization ✔ Shopify Liquid development ✔ Shopify Plus support ✔ Shopify 2.0 sections and templates ✔ Custom product and collection pages ✔ Cart and checkout improvements ✔ App integration and setup ✔ Subscription and membership setup ✔ Product filtering and search ✔ Speed optimization ✔ Store migration ✔ Bug fixing and maintenance ✔ Third-party app customization ✔ Advanced theme tweaks ✔ Custom landing pages ✔ Multi-language and multi-currency setup ✔ SEO-friendly Shopify structure ✔ Conversion-focused UI improvements Experienced with themes like Dawn, Prestige, Impulse, Motion, Debut, Ella, Empire, Warehouse, Broadcast, Symmetry, and more. 🧩 𝗪𝗼𝗼𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲 & 𝗪𝗼𝗿𝗱𝗣𝗿𝗲𝘀𝘀 ✔ WooCommerce store development ✔ WordPress website development ✔ Custom theme development ✔ WooCommerce customization ✔ Product, cart, checkout setup ✔ Payment gateway integration ✔ Shipping, tax, and order setup ✔ Plugin customization ✔ Elementor, Divi, Gutenberg, WPBakery ✔ Astra, Avada, GeneratePress, Kadence, Flatsome ✔ Speed and security optimization ✔ Migration and redesign ✔ Maintenance and bug fixing ✔ Custom plugin development ✔ Membership and booking systems ✔ SEO optimization basics ✔ Performance tuning ✔ Responsive UI design ✔ CMS customization I build business websites, WooCommerce stores, landing pages, membership sites, booking platforms, and custom CMS solutions. 🎯 𝗘-𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗦𝘁𝗼𝗿𝗲𝘀 ✔ Fashion and clothing ✔ Beauty and skincare ✔ Jewelry and accessories ✔ Health and wellness ✔ Food and beverage ✔ Home decor and furniture ✔ Electronics and gadgets ✔ Print-on-demand ✔ Digital products ✔ Subscription stores ✔ B2B and wholesale ✔ Dropshipping ✔ Multi-category and niche stores ✔ High-volume stores ✔ Startup MVP stores ✔ Brand-focused stores ✔ Custom product stores ✔ International stores From new builds to redesigns, migrations, speed fixes, or custom features, I can help. 🔧 𝗖𝘂𝘀𝘁𝗼𝗺 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 ✔ Custom Shopify sections and Liquid coding ✔ Custom WordPress features ✔ WooCommerce custom functionality ✔ API integrations ✔ CRM and email marketing tools ✔ Klaviyo, Mailchimp, HubSpot ✔ Stripe, PayPal, Razorpay, Apple Pay, Google Pay ✔ Inventory and order tools ✔ Shipping and fulfillment integrations ✔ Analytics, Meta Pixel, Google Ads, GA4 ✔ Automation workflows ✔ ERP integrations ✔ Custom dashboards ✔ Data syncing solutions ✔ Third-party service connections ✔ Marketing automation setup ✔ Tracking and reporting tools I ensure your store connects smoothly with your business tools. ⚡ 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 & 𝗖𝗢𝗡𝗩𝗘𝗥𝗦𝗜𝗢𝗡 ✔ Speed optimization ✔ Core Web Vitals improvement ✔ Mobile responsive design ✔ SEO-friendly structure ✔ Product page optimization ✔ Conversion-focused layout ✔ Checkout improvements ✔ Image and script optimization ✔ App cleanup ✔ Tracking and analytics setup ✔ UX improvements ✔ Funnel optimization ✔ Page load reduction ✔ Lazy loading setup ✔ Script management ✔ Technical SEO basics ✔ CRO enhancements A great store should be fast, easy to use, and built to convert. 🏆 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 ✔ 16+ years experience ✔ Top Rated Plus profile ✔ Strong Shopify, WooCommerce, WordPress expertise ✔ Clean and scalable code ✔ Custom themes, plugins, integrations ✔ Focus on user experience and conversion ✔ Clear communication ✔ Reliable delivery and long-term support ✔ Detail-oriented approach ✔ Problem-solving mindset ✔ Business-focused solutions ✔ Long-term collaboration mindset I build complete eCommerce solutions that work for both customers and store owners. 📩 𝗟𝗲𝘁'𝘀 𝗕𝘂𝗶𝗹𝗱 𝗬𝗼𝘂𝗿 𝗦𝘁𝗼𝗿𝗲 If you need a Shopify, WooCommerce, or WordPress expert for a new store, redesign, migration, custom feature, or optimization, I’m here to help. Share your project details, and I’ll suggest the best approach. 𝐊𝐞𝐲 𝐒𝐤𝐢𝐥𝐥𝐬: Shopify Developer, Shopify Expert, Shopify Plus, Shopify Liquid, Shopify Theme Development, WooCommerce Developer, WordPress Developer, E-Commerce Development, Custom Themes, Plugin Customization, Elementor, Klaviyo, Mailchimp, GA4, Meta Pixel, Stripe, PayPal, API Integration, Speed Optimization, Store Migration, Conversion Optimization.

Senior Full-Stack / Platform Engineer and Tech Lead / Architect-Implementer with 18+ years of industry experience, including 4+ years in technical leadership roles, spanning architecture, hands-on engineering, and DevOps. Operating at Staff-level scope across architecture, hands-on engineering, and cross-team technical leadership. A cross-role, cross-stack engineer combining deep execution with product thinking and system- level architecture — consistently delivering high-impact results, owning systems end-to-end from code to infrastructure, CI/CD, and production operations, and ensuring features deliver real customer value, are adopted, and fit naturally within the product. Specialize in rescuing, modernizing, and scaling complex brownfield or legacy systems, applying incremental modernization strategies (e.g., Strangler Fig pattern) and evolving them into maintainable, high-performance architectures using modular monolith, microservices, and event-driven approaches. Operate across the full lifecycle — from greenfield development to architecture, implementation, and production operations, as well as brownfield evolution through incremental modernization approaches. Strong focus on improving and optimizing delivery processes, closing gaps, and eliminating inefficiencies. Building environments where engineers take ownership, move fast, and solve real problems — with room for creativity, initiative, and technical exploration. Emphasis on developer and client experience through clear expectations, fast feedback loops, and bidirectional communication. Processes are shaped to fit the business and product — not copied from “FAANG playbooks” without context. AI-first engineer, using AI as a force multiplier while maintaining strict control over architecture, performance, security, and system integrity.

I design and deploy intelligent AI ecosystems that transform manual bottlenecks into high performance, automated revenue engines. Specializing in Claude Code and agentic workflows, I bridge the gap between raw LLM power and production-ready business logic. 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 & 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐭𝐚𝐜𝐤 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭𝐬 & 𝐑𝐞𝐚𝐬𝐨𝐧𝐢𝐧𝐠: Expert in building autonomous AI Agents using Claude 3.5 Sonnet/Opus and GPT-4. I leverage Claude Code for advanced reasoning, agentic loops, and refactoring complex automation scripts. 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: Powering end-to-end workflows with n8n (preferred), Make, and Zapier. I specialize in connecting CRMs (HubSpot, Salesforce) to custom AI handlers via webhooks and Python scripts. 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐆𝐫𝐚𝐝𝐞 𝐑𝐀𝐆: Designing Retrieval-Augmented Generation systems using Pinecone, Weaviate, and Chroma. I build internal knowledge bases that sync with Notion, Slack, and Google Drive for pinpoint accuracy. 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: LangChain · LlamaIndex · FastAPI · Python · Supabase · Docker. 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 𝐓𝐡𝐚𝐭 𝐒𝐜𝐚𝐥𝐞 Custom Claude Agents: Moving beyond basic prompts to build agents that write code, handle multi-step research, and execute API calls autonomously. 𝐀𝐜𝐭𝐢𝐨𝐧𝐚𝐛𝐥𝐞 𝐒𝐮𝐩𝐩𝐨𝐫𝐭 𝐁𝐨𝐭𝐬: AI assistants that don’t just answer FAQs but trigger real actions—like updating a ticket status or qualifying a lead directly in your stack. 𝐈𝐧𝐭𝐞𝐫𝐧𝐚𝐥 𝐊𝐧𝐨𝐰𝐥𝐞𝐝𝐠𝐞 𝐀𝐬𝐬𝐢𝐬𝐭𝐚𝐧𝐭𝐬: Specialized agents trained on your proprietary docs to provide instant, sourced answers for your team. 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐞𝐝 𝐋𝐞𝐚𝐝 𝐄𝐧𝐠𝐢𝐧𝐞𝐬: Fully automated systems that scrape, qualify, and personalize outreach while you sleep. 𝐓𝐡𝐞 𝐖𝐨𝐫𝐤𝐟𝐥𝐨𝐰: 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 𝐭𝐨 𝐄𝐱𝐞𝐜𝐮𝐭𝐢𝐨𝐧 I don’t just build cool demos; I deliver documented, self-healing systems. My process starts with a deep audit of your current tech debt, followed by the deployment of clean, Claude-verified code and robust error-handling. Whether it’s a custom LLM application or a complex SaaS workflow integration, I ensure every automation is scalable, transparent, and ready for high-volume production. Ready to automate? Let’s discuss how we can layer Claude Code and n8n over your operations to drive measurable efficiency.

I am a senior front-end engineer with over 15 years of experience building products for startups and enterprise clients. Proficient working with HTML, CSS, Javascript, and the latest frameworks like Vue, and Node. Focusing on standards-based, modern, responsive web design practices using HTML5, CSS3, and SASS/LESS. Extensive experience in site optimization on Wix, SquareSpace and landing pages. Taking slow websites and getting scores into the 90s using Google Page Insights.