I am a senior programmer with an impressive 13-year track record in commercial development, specializing .NET technologies and others. My unwavering commitment has always been to deliver excellence, consistently focusing on delivering high-quality products that exceed customer expectations. Over the course of my extensive career, I have continually refined my skills and expertise to provide innovative solutions that not only meet but also consistently surpass the evolving demands of today's software landscape. Skills overview: ► Programming languages: C#, Action Script 3, Python, C++. ► User Interface: WPF, WinForms. ► IoC: UnityContainer, StructureMap. ► Unit testing frameworks C#: NUnit, Moq. ► Database: SQL, SQLite. ► ORM: Entity Framework, SQLite.Net-PCL. ► Third party WPF libraries: DevExpress, SyncFusion, MaterialDesign. ► Game engines: Unreal Engine 4, Flare3D. ► Continues integration and PM SW: Bitbucket, Jenkins, TeamCity, Azure DevOps, Jira, Trello. ► Versioning: Git, SVN. ► Design patterns: Factory, Decorator, Strategy, Observer ... ► Architectural patterns: MVC, MVVM. ► Frameworks: Prism, Caliburn, MVVM Light. ► Design software: Photoshop. ► Texturing software: Substance Painter. ► 3D Modeling software: Blender. ► ASP.NET Core API. ► ASP.NET Core Web App.

I’m a Software Engineer and Competitive Programming Expert with over 10 years of experience in Algorithms and Data Structures. I hold a Bachelor's degree in Computer Science and have helped many clients with programming projects, assignments, interview preparation, and algorithmic problem-solving. I also work as a Competitive Programming Coach and ICPC Judge/Problem Setter. I’m ranked among the top 1.5% on LeetCode: https:// leetcode. com/ HossamYehia, with extensive experience solving complex algorithmic challenges. You can also find additional competitive programming experience in the “Other Experiences” section of my profile. ### Programming Languages 👉 C 👉 C# 👉 C++ 👉 Go 👉 Java 👉 Python 👉 JavaScript ### Algorithms & Data Structures Expertise 👉 Dynamic Programming 👉 Graph Algorithms (BFS, DFS, Dijkstra, MST, Max Flow, SCC, etc.) 👉 Advanced Data Structures (Trie, Segment Tree, Fenwick Tree, BSTs, etc.) 👉 Binary Search & Ternary Search 👉 Mathematics (Probability, Number Theory, Combinatorics, etc.) 👉 Problem Solving & Optimization ### Competitive Programming Experience ✅ 5000+ solved problems ✅ 200+ created problems ✅ ICPC Judge & Problem Setter ✅ Competitive Programming Coach I am detail-oriented, committed to delivering high-quality work, and capable of learning new technologies quickly when needed. If you are looking for someone with strong problem-solving skills and deep algorithmic expertise, I’d be happy to help. Let’s build something great together!

I don't treat myself as just a contractor completing a checklist. When I'm in your product and I notice something that could be better — a confusing flow, a missed edge case, a process quietly costing your team time — I say something. I've had clients tell me I saved them from launching something that would have damaged their reputation. That's the part of this work I care about most With 20+ years in tech including 10+ years as a remote QA specialist and project manager for US and Australian web development agencies — I've tested and shipped eCommerce platforms, SaaS products, CRMs, mobile apps, and custom web applications. I've worked with brands and international e-commerce brands. My platform expertise spans Shopify, Magento, BigCommerce, WooCommerce, Drupal, and Wix But that's not where my story starts. I began my tech career in 1996 as the sole IT person at a manufacturing company — no training, no manual, no team. Just me and a business that needed systems to run. I designed and maintained enterprise systems across sales, inventory, accounting, manufacturing, and logistics for 18 years across multiple branches. That experience permanently changed how I see software. I don't just check if a button works. I think about the business logic behind it, the edge cases no one thought to write down, and the real person using it under pressure on a difficult day. On the project management side, I've grown and led a 16-person distributed QA and delivery team handling 10+ concurrent web development projects. I write tickets developers actually act on, run sprint reviews that move things forward, and translate technical issues into clear language for clients. I know when to escalate, when to absorb, and how to keep a project on track when things get complicated. I'm based in the Philippines (available US and AU timezones), open to full-time and part-time engagements, and I take long-term partnerships seriously. If you need someone who catches what others miss and genuinely cares whether your product succeeds — let's talk. ────────────────────────────────────── QA COVERAGE Manual & regression testing · Functional & usability testing · Edge case & boundary analysis · End-to-end flow testing · Cross-browser & device testing · Bug reporting with steps, video & severity · UAT facilitation · Requirements → test scenarios PROJECT MANAGEMENT Sprint planning & reviews · Ticket writing & backlog management · Team & client communication · Stakeholder reporting · SOP creation · Risk identification · Deadline & scope management PLATFORMS & TOOLS Shopify · Magento · BigCommerce · WooCommerce · Drupal · Wix · WordPress · Jira · ClickUp · Asana · Trello · Basecamp · BrowserStack · Google Workspace · Slack

Hello, my name is Jerryson Lacson and I'm from Philippines. Innovative and results-driven Technical Lead and Senior Software Engineer with over 15 years of experience designing and delivering scalable software solutions. Proven leadership in guiding cross-functional teams, driving architectural excellence, and ensuring high-quality code. Adept in full-stack development, cloud technologies, DevOps, and microservices architecture. Sincerely Jerryson L.

𝙇𝙚𝙩 𝙢𝙚 𝙩𝙚𝙡𝙡 𝙮𝙤𝙪 𝙬𝙝𝙮 𝙛𝙤𝙪𝙣𝙙𝙚𝙧𝙨 𝙖𝙣𝙙 𝙩𝙚𝙖𝙢𝙨 𝙗𝙧𝙞𝙣𝙜 𝙢𝙚 𝙞𝙣 𝙬𝙝𝙚𝙣 𝙩𝙝𝙚𝙮’𝙧𝙚 𝙗𝙪𝙞𝙡𝙙𝙞𝙣𝙜 𝙎𝙖𝙖𝙎 𝙖𝙣𝙙 𝙈𝙑𝙋𝙨. 🏆 100% Job Success Score ⭐ 1 % Top Rated Plus Freelancer on UPWORK ✅ 15+ Years of Production Experience as a Senior Full Stack Developer ✅ End-to-End Product Ownership & 100+ Websites Delivered As a Senior Full Stack Developer, I’m usually brought in for MVP builds, product rebuilds, and “this is breaking in production” moments. That’s the difference between hiring a Senior Full Stack Developer and hiring someone who only ships features. 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 𝐟𝐨𝐫 𝐘𝐨𝐮 𝐀𝐬 𝐚 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫: 𝟏. 𝐒𝐚𝐚𝐒 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 & 𝐂𝐮𝐬𝐭𝐨𝐦 𝐂𝐌𝐒 Multi-tenant architecture, PHP & MySQL based custom CMS, custom admin panels, advanced user dashboards, role-based access, and dynamic data charts development. 𝟐. 𝐞𝐂𝐨𝐦𝐦𝐞𝐫𝐜𝐞 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 As a Full Stack Developer, I build custom storefronts, WordPress plugins, WooCommerce plugins, and Shopify setups optimized for conversions and performance. 𝟑. 𝐌𝐜𝐥𝐚𝐬𝐬 𝐕𝐏𝐬 𝐅𝐚𝐬𝐭 Got an idea? I'm a Full Stack Developer who owns the entire stack. I leverage robust frameworks like Laravel, CodeIgniter, and CakePHP to take you from wireframe to deployed product in weeks, not months. 𝟒. 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐖𝐞𝐛 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 As a Full Stack Developer working with modern AI tooling, I build advanced AI integrations including ChatGPT and ClaudeAI directly into your product workflows. 𝟓. 𝐀𝐏𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 & 𝐓𝐡𝐢𝐫𝐝-𝐏𝐚𝐫𝐭𝐲 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 Expert implementation of RESTful architectures and complex third-party systems. I connect everything seamlessly, from secure payment checkouts to enterprise automations. 𝟔. 𝐋𝐞𝐠𝐚𝐜𝐲 𝐒𝐲𝐬𝐭𝐞𝐦 𝐌𝐨𝐝𝐞𝐫𝐧𝐢𝐳𝐚𝐭𝐢𝐨𝐧 Slow, outdated codebase? As a Full Stack Developer, I clean up technical debt and migrate legacy monoliths to scalable structures without breaking live systems. 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 & 𝐓𝐡𝐢𝐫𝐝-𝐏𝐚𝐫𝐭𝐲 𝐀𝐏𝐈 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: ✔ Payments & Billing: Stripe, PayPal, CCAvenue, Authorize.net, MangoPay ✔ Communications & Video: Twilio, Twilio Video Conferencing, Zoom, Jitsi ✔ Marketing & CRM Automation: HubSpot, ConnectWise, MailChimp, SendGrid ✔ Data, Location & Surveys: Qualtrics, TextLocal, ID Analyzer, UPS, Google Maps, Google GeoLocation ✔ Security & Monitoring: JWT, Auth0, Google ReCaptcha, Sentry 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: ➤ 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 → ReactJS, VueJS, JavaScript, jQuery, Bootstrap, HTML5/CSS3 ➤ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 → PHP (Laravel, CodeIgniter, CakePHP), NodeJS, Custom MVC ➤ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 → MySQL, 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐓𝐨𝐨𝐥𝐬: ➤ Cursor, Cline, GitHub Copilot, Claude Code ➤ ChatGPT, Gemini, v0.dev, Bolt.new ➤ n8n, Zapier, Make (Integromat) ➤ AI Agent Integrations & Workflow Automation 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐜𝐜𝐜𝐡𝐨𝐨𝐬𝐞 𝐭𝐨 𝐇𝐢𝐫𝐞 𝐌𝐞..? ✅ 𝐅𝐮𝐥𝐥 𝐎𝐰𝐧𝐞𝐫𝐬𝐡𝐢𝐩 - I handle frontend, backend, database, and cloud ✅ 𝐒𝐡𝐢𝐩𝐬 𝐅𝐚𝙨𝐭 - 100+ successful website launches on aggressive timelines ✅ 𝐒𝐜𝐚𝐥𝐞𝐬 𝐖𝐞𝐥𝐥 - Architecture designed for growth and heavy traffic from day one ✅ 𝐂𝐥𝐞𝐚𝐫 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 - Plain English updates, no tech jargon ✅ 𝐒𝐭𝐚𝐲𝐬 𝐀𝐟𝐭𝐞𝐫 𝐋𝐚𝐮𝐧𝐜𝐡 - Available for long-term relationships built on trust and loyalty ✅ 𝐓𝐡𝐢𝐧𝒌𝙨 𝐋𝐢𝗸𝐞 𝐚 𝐅𝐨𝐮𝐧𝐝𝐞𝐫 - I treat your product as a business, not a ticket Please check my UpWork profile, and read other clients' feedback and comments about me. 𝐀𝐕𝐀𝐈𝐋𝐀𝐁𝐋𝐄 𝐅𝐎𝐑 𝐋𝐎𝐍𝐆 𝐓𝐄𝐑𝐌 𝐑𝐄𝐋𝐀𝐓𝐈𝐎𝐍𝐒𝐇𝐈𝐏 𝐖𝐈𝐓𝐇 𝐓𝐑𝐔𝐒𝐓 𝐀𝐍𝐃 𝐋𝐎𝐘𝐀𝐋𝐓𝐘.. Full Stack Developer | PHP Developer | Laravel Developer | CodeIgniter Developer | CakePHP Developer | Senior Web Developer | WordPress Developer | | WooCommerce Developer | Shopify Developer | ReactJS Developer | VueJS Developer | NodeJS Developer | AI Integration Specialist | API Integration Expert | Custom CMS Developer | SaaS Developer | MVP Developer | Backend Developer | Web Application Developer | Frontend Developer | Database Developer | MySQL Expert | Stripe Integration Developer | PayPal Integration Expert | Twilio Developer | AWS Developer | Full Stack Engineer | Senior PHP Developer | PHP Laravel Developer

Top 1pct Expert-Vetted Software Developer with 25 years of experience across various platforms: embedded, desktop, web and mobile. Specialising in C++, Python, C#, PHP, TypeScript and JavaScript. Databases MSSQL, MySQL, PostgreSQL. I'm experienced in code development, software architecture design and project management. I have worked on a wide range of desktop applications for Windows, OS X, and Linux. Participated in the massive commercial projects. Developed numerous web, desktop and mobile apps according to the clients' requirements.

Senior WordPress Developer. Reliable and responsive. Result-oriented work. On time. "Top Rated Plus" Upwork premium freelancer, member of an Upwork PRO group. 14+ years skill in full-stack web site development (prototype, graphic design, front-end, back-end, SEO). Back end experience: PHP (WordPress, Laravel), C# (ASP .NET MVC, Web API, Entity Framework, Orchard, Kooboo, Umbraco). Front end experience: HTML5 / CSS3, SASS, LESS, Bootstrap 5, Html5 animation, JS, jQuery, AJAX, Json, Rest API, Angular 1-2-4, React.js, Vue.js, Node.js, Three.js. Other experience: Windows/Unix Server administration, Git, Azure, AWS and cloud solutions. In terms of WordPress can provide: ✔️ custom theme design or theme/template modification; ✔️ responsive HTML (will pass Google mobile-friendly test, work on any device and OS); ✔️ retina display support; ✔️ HTML5 animation if needed; ✔️ WordPress/Woo back end; ✔️ WordPress multisite and membership, BuddyPress, bbPress; ✔️ custom plugin development; ✔️ 3rd-party services and payment systems API integration; ✔️ SEO, make AMP compliant, setup CDN (Cloudflare); ✔️ support; ✔️ warranty. Great experience with: ✔️ e-commerce; ✔️ payment systems integration (PP, Stripe, Authorize.net and similar); ✔️ Google Maps API (custom design, clusters, routing, radius, speed/time/distances calculation, etc.); ✔️ responsive CRM and dashboards, high-traffic web-projects; ✔️ experience with Microsoft Power BI. Keep the warranty, always available, fast response and turnaround. === TAGS === WordPress Developer ; WordPress expert ; Fullstack developer.

Okay here is the honest review of myself: I use Claude Code and cursor. Cursor only if Claude code somehow exceeded the token limit and I need to finish the task immediately. Great debugger , awesome at communication and Claude Code guy. My only limitation is the Claude Code limitation. Pay me good and we will build things at pace. No, I don't live in US, doesn't mean I cannot overlap your business hours, 4 hours any timezone.

As a Video and Mobile Game Developer, I have successfully shipped 550+ game Projects as a Unreal Engine and Unity Game Developer for IOS, PC and Android platforms. I manage and deliver playable prototypes and marketing trailers for projects that actually make it to the finish line. You can have good time with me in: Complete Game Creation & Prototyping: I write the code that makes characters move, jump, fight, and interact smoothly, spinning up quick playable slices for investor pitches. Game Trailer Production: I capture high-fidelity gameplay footage, time audio transitions perfectly, and deliver polished promo videos or teasers ready for App Store, Google Play, or Steam distribution. Unreal Engine & Unity Expert: I build and structure your project inside the world's leading game software, fixing core physics and mechanic pipelines behind the scenes. Performance Tuning: I optimize dense visual assets and clean up code logic to fix lag, stabilize your frame rate, and prevent device overheating or battery drain. Project Rescue: If a previous developer or freelance team left you with a broken, unoptimized, or unfinished build, I step in to clean up the code and fix it completely. I make the development and video creation process organized, reliable, and stress-free. Let's hop on a quick chat to look over your ideas and create a clear plan to bring your game to life.

Over 10+ years of experience in IT industry, involving in Software Design, Analysis, Development integration and Testing at client and server side in various domains such as transport, finance, etc. My Skills: • Experience in .NET Framework/Core • Experience with C# 10 and .NET 6 and earlier versions • Experience in React, Angular, Node, HTML5, JavaScript and CSS • Windows desktop application development experience • Experience with Windows and WCF services development • Experience in Microservice API and REST services and understanding of containers • Experience with WPF GUI Modular application development • Practical experience using MVVM design pattern and DevExpress WPF controls • Exposure in multi-process .NET applications • Relational database experience MySQL & SQL Server • Understanding of message queues and middleware. • Experience with SDLC tools, like Jira, bitbucket, bamboo Confluence, GIT source control system • XAML-based user interface development experience (e.g., WinUI 3, UWP, WPF) • Experience with LINQ to XML • Understanding of XML schemas (XSD) • Integration with third party softwares like Act, Quick Books, UPS/USPS. • Ability to work independently • Git version control • Solid understanding of testing principles and high-quality software • Excellent written and verbal English communication skills. DEVOPS Experience: 1.) Docker for containerization of projects 2.) GITHUB Actions for CI/CD over Ec2-Instance 3.) AWS CI/CD over S3 bucket 4.) Jenkins for project build and deployment. 5.) Docker-compose for managing and launching micro services using YML compose. 6.) ElasticBeanstalk Worked in an Agile team of .NET developers for a fast-paced software development firm. Worked on 10+ SQL database design projects. Improved speed to complete projects by 35% in 15 weeks. Developed and provided maintenance for 20+ .NET websites/applications, using ASP.NET MVC, jQuery, HTML, and CSS. Achieved 100% client satisfaction and on-time completion. Created remote coding and testing environment with bash and Docker scripts.