Top-Rated Plus Freelancer | Senior .NET Engineer | API Integrations | Legacy Modernization | AI-Assisted Automation I am a Senior Software Engineer with over 20 years of professional experience helping companies modernize legacy systems, build reliable APIs, and integrate complex business platforms. I started my career working with Visual FoxPro and desktop-based enterprise applications, and later transitioned to the .NET ecosystem, where I have spent many years building scalable backend systems using C#, ASP.NET, and SQL Server. This background allows me to work comfortably with both legacy and modern technologies, acting as a bridge between old systems and new architectures. In recent years, I have also incorporated AI-assisted tools and platforms into my workflow to improve automation, data analysis, and development efficiency, including experience with Abacus.AI for AI-driven insights and process optimization. What I specialize in Legacy system modernization (Visual FoxPro, Delphi → .NET / ASP.NET Core) API development and system integrations (REST & SOAP) ERP and HR system integrations (Epicor, ADP, Workday, SAP) Database-driven applications (SQL Server, Oracle, MySQL) Automation and productivity solutions (AutoIT) AI-assisted automation and data analysis How AI adds value to my work AI-assisted development for faster debugging, refactoring, and optimization Using AI tools to improve reporting, data interpretation, and business insights Supporting automation workflows with AI-driven analysis Enhancing legacy systems with modern, intelligent components Recent work highlights Migrated legacy Visual FoxPro applications to C# and ASP.NET with SQL Server backends Integrated payroll and HR platforms (ADP, Workday) with custom ERP systems Designed and implemented RESTful APIs for multi-system environments Applied automation and AI-assisted tools to reduce manual processes Led small development teams on long-term enterprise projects Technical Skills Languages & Frameworks: C# (.NET, ASP.NET, ASP.NET Core, WinForms, WPF), Visual FoxPro, Delphi, Angular, AutoIT, Java Databases: SQL Server (T-SQL), Oracle (PL/SQL), MySQL APIs & Integrations: REST, SOAP, third-party and internal systems Reporting: SSRS, Crystal Reports ERP & Business Systems: Epicor, SAP, ADP, Workday AI & Automation: Abacus.AI, AI-assisted development, automation workflows Tools: SSIS, Inno Setup, InstallShield I am a reliable, detail-oriented professional who values clean code, clear communication, and long-term collaboration. If you need help modernizing a legacy system, integrating APIs, or enhancing your applications with automation and AI-assisted solutions, I’d be glad to work with you.

Summary of Qualifications 1. Specialist on Mainframe Z/OS, AS/400 iSeries ,Windows Server 2019, UNIX and Linux systems. 2. Mainframe Development COBOL, JCL, VSAM, CICS 3. Development on AS/400 RPG/400, RPG ILE, CL/400, COBOL/400, SQL/400 4. Micro Focus Development COBOL, NetCOBOL, PeopleSoft 5. Data Migration on Mainframe and AS/400 to SQL Server and other Database 6. Development on Visual Studio 2022 - C#, VB.NET, ASP.NET 7. Development on Visual Studio - VB6, Visual FoxPro 9 8. Php/ MySql, ,HTML, XML, JavaScript, jQuery 9. Specialist Implement, maintain and customize ERP Systems (JD Edwards, Baan ERP) 10. Implement and maintain backend and Database of JD Edwards, Baan ERP System - BPCS, JD Edwards, Baan ERP Systems in AS/400 11. Open source Programs (Joomla, Zencart, Magento, Drupal,) 12. SAP/R3, SAP Business One Education: 1. Bachelor of Science in Information Systems - 1991, ACTON University – UK 2. Diploma in Computer System Design National Institute of Business Management (NIBM), Sri Lanka 3. Diploma in Computer System Design DMS Computer Center 4. Diploma in Advance Programming IDM Computer Studies Colombo, Sri Lanka 5. Advance Diploma in Computer Hardware Engineering 6. Advance Programming in JAVA Languages Career History 2009–2014 Acentria Solutions, Dubai, UAE Information Technology Manager- Habitat Hotel, Jeddah. KSA  Implement and maintain backend and Database of JD Edwards, Baan ERP System  Customize of JD Edwards, Baan ERP System reports in AS/400  Development Implement and maintain backend and Database of JD Edwards, Baan ERP System  Customize and Implement Application Software for organization ( RPG/400, RPG ILE, CL 400, Visual Basic .NET 2005, C#)  Monitoring & maintaining the internal network , WLAN & FIBER OPTICAL , Enhancing and operating on WIN 2003 SERVER , ISA SERVER 2006,MAIL EXCHANGE SERVER  Hardware and software maintenance.  MSSQL 2000, ORACAL 9i Servers Maintained and troubleshooting  Developed and enhance PAYROLL System – Developed in Microsoft Visual Studio 2005  Installation and support of systems, networking, devices, software and hardware equipment.  System support on technical and programming solutions. TECHNICALSKILLS  Php/ MySql, ,HTML, XML, JavaScript, jQuery  Open source Programs (Joomla, Zencart, Magento, Drupal,)  Microsoft Visual Studio 2005, 2008 ( VB.NET, C#.NET)  Microsoft MQL Server 2005, 2000  RPG/400, CL/400, COBOL/400, SQL/400  Oracle 9i  SAP/R3  Java  ASP

♛ 𝐓𝐎𝐏-𝐑𝐀𝐓𝐄𝐃 PLUS 𝐅𝐮𝐥𝐥-𝐬𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 – Certified Scrum Master 🥇 100% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 ✔️ 18+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐇𝐚𝐧𝐝𝐬-𝐨𝐧 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 ✔️ 8+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 as Solution/Technical Architect ✔️ 5+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 as Development Project Lead 🕐 32k+ 𝐔𝐩𝐰𝐨𝐫𝐤 𝐇𝐨𝐮𝐫𝐬 ✔️ 40+ 𝐉𝐨𝐛𝐬 𝐒𝐮𝐜𝐜𝐞𝐬𝐬𝐟𝐮𝐥𝐥𝐲 𝐂𝐨𝐦𝐩𝐥𝐞𝐭𝐞𝐝 🏆 Overall 18+ years of experience working: ✔️ DotNetCore ✔️ WEB API ✔️ C#, ASP.NET ✔️ MVC ✔️ FoxPro, VFP ✔️ SQL Server, PostgreSQL, MySQL ✔️ Micro Services, Design Patterns ✔️ SOLID Principles ✔️ Auth Server (created in-house Auth Server) ✔️ Security, Identity Service 🏆 Front-end technologies ✔️ Angular ✔️ Razor Views ✔️ Blazor ✔️ WinForms ✔️ HTML, CSS ✔️ JS, jQuery 🏆 ORM ✔️ Entity Framework ✔️ Dapper 🏆 Third Party Tools ✔️ DevExpress ✔️ Service Stack 🏆 Azure DevOps: ✔️ CI/CD ✔️ Functions ✔️ App Services ✔️ Queues, Containers 🏆 Testing ✔️ NUnit ✔️ Xunit ✔️ MSTest ✔️ Manual Testing 🏆 Version Controls ✔️ Git ✔️ SVN ✔️ VSS 🏆 Domains ✔️ Asset Finance & Leasing ✔️ VisionCare ✔️ Dental Industry ✔️ Banking & Finance ✔️ Migrated more than 5 Visual FoxPro projects to .NET (C#, Web API, ASP.Net, MVC). ✔️ Performance tuning of .NET applications migrated from FoxPro for larger database. ✔️ Quick Learner ✔️ Good analytical & debugging skills. 🏆 Industry Experience Ambit Asset Finance – 7 Years - Technical Lead Create plugins to achieve customer requirements including: ✔️ Validation Plugins ✔️ Aii Plugins ✔️ Flow validations Enterprise/Core Modules: ✔️ Security, User Roles ✔️ Contracts, Parties ✔️ Workflow setup and documentation ✔️ Business Rules ✔️ Custom flows ✔️ Processes Interface: ✔️ Bank Interfaces ✔️ GL Interfaces ✔️ Credit Checks 🏆VisionCareDirect – 3 Years - Solution Architect/Technical Architect Business Portal ✔️ Geo Access ✔️ Eligibility ✔️ Billing & Reports ✔️ Vision Plans Setup Provider Portal ✔️ Claims ✔️ Payments ✔️ Reporting Auth Server - SSO ✔️ In-house Auth server developed using. o Open ID Connect o Authorization Code flow o Password flow o Single Sign On/Out using Session Management Specification o Social Sign in using Google and Facebook ✔️ SSO For Admin, Business, Provider, and other Portals Member Portal ✔️ Download Cards ✔️ Plans and Eligibility ✔️ Reporting 🏆Dentistry Automation – 3 Years - Technical Architect One API, Core Extraction ✔️ Core API to extract data from PMS ✔️ Plugins architecture to extract data from different PMS ✔️ Scheduler to schedule extraction at client systems for on premises PMS ✔️ Configuration based ✔️ Data Loader & ETL services to convert data in generic format from each PMS. Patient Eligibility ✔️ Scrap payor websites to get patient eligibility ✔️ Generate client specific document with eligibility details based on templates configured by client ✔️ Extract data from different exchanges DX, CH, Availity etc. ✔️ Write back document and data into different PMS systems. ✔️ Billing & Reporting RCM & Payment Posting ✔️ Get status of claims by scrapping payor websites ✔️ Update status and post back to the PMS ✔️ Process bank payments ✔️ Reporting

I'm a senior .NET developer with over 12 years on Upwork, specialising in Windows desktop applications, legacy system work, and business integrations across the Microsoft stack. My background is broad, but where I'm most useful is on the harder projects — undocumented codebases, legacy migrations, ERP integrations, and end-to-end delivery of complex Windows software. These are the kinds of projects I've built a reputation around. A recent example: I designed and built a full Windows Assistant platform using WPF — combining video capture, SharePoint content management with a Windows Explorer-style interface, a locally cached SQLite database with a background sync service, and a Web API built on a clean services/infrastructure architecture over Entity Framework Core and SQL Server. The system included SignalR real-time notifications, JWT authentication, and integrations with Vimeo, Twilio, SmileBack and others, alongside a complete MVC admin portal. What I work on: Legacy systems — VB6, Visual FoxPro, VB.NET, WinForms, WPF. I regularly take on codebases other developers decline, and I'm comfortable working in undocumented or inherited code. ERP and business integrations — SAP, SAGE, MYOB, SQL Server, Oracle, Shopify, DocuSign, Amazon API and more. I've worked across insurance, logistics, and enterprise clients and understand how business-critical systems need to behave. I ask the right questions before I start, flag issues early, and deliver on time. Clients tend to come back for that as much as the technical work. Tech I work with: WPF · WinForms · C# · .NET / ASP.NET · WCF · Entity Framework Core · SQL Server · Oracle · SQLite · SignalR · JWT · REST APIs · SharePoint · MS Office Add-ins · SAP · SAGE · MYOB · VB6 · VB.NET · Visual FoxPro · Shopify · DocuSign · Amazon API · Vimeo · Twilio · MVC

Senior Business Analyst, Developer, Database Designer, and Software Architect with a proven record of delivering effective results for complex business problems. Master of business/IT collaboration, object-oriented software development, and problem solving. Conference speaker, author and data dog.

I have programming experience for more than 25 years. Used programming languages: Visual Foxpro, C#, JavaScript. Familiar with VB.Net, Visual Basic, VBA, etc. For the past 7 years, I've been working on the development and support of websites using ASP.NET MVC, HTML5, CSS, Javascript, jQuery, AngularJS, Knockout and other frameworks. I have good skills in working with MS SQL. Familiar with MySQL. I have experience in transforming FoxPro applications to .NET and enhancing the capabilities of VFP applications by creating COM classes using c#. I have already created tools for many web APIs, such as: Amazon MWS, Shopify, BigCommerce, WooCommerce, Intuit QuickBooks. Familiar with Google APIs: GMail, Maps, Vision, YouTube.

As a chief programmer at large company during years, I accumulated essential knowledge in many IT-fields: - Large scale project development: desktop, web and client-server applications; - Making applications for cloud services (AWS, Google Cloud Platform, Azure); - Using AI directly and via API (ChatGpt, Gemini, Copilot); - Database maintenance, scripting (MsSql, MySql, PostgreSql); - Scripting (c#, vb, vba, php, javascript, jquery, perl, python); - MS Office document processing, scripting, converting (interoperability in - .NET, VBA, using office documents in web projects) - Access DB, Excel, MS Project, Word, OneNote, processing and converting of pdf documents. - GIS processing and scripting - ArcGis, Google maps API.

" Rajesh is a perfect 10! I say that without reservation. I am writing this having hired enough programmers to say, 'If you need a job done excellently, Rajesh is your man.' " - Alan Fendrich, AdvancedHiring.com (my first client in my Freelancing career!) Looking for solutions in Foxpro, Visual Foxpro OR Dot Net Platform ? I can design, discuss, develop, prototype and deliver an awesome solutions. You would love it! So, contact me to: * Upgrade VFP applications with advanced features and facilities * Re-write Foxpro, VFP application on latest platforms * Develop Desktop & Web applications

I am a professional Five9 and Call Center Management consultant from Canada with over 20 plus years of experience in the IT industry. During this tenure I have held various positions and developed and honed a wide variety of skills. I am Five9 certified and have good knowledge of the call center Industry, PCI compliance, TCPA regulations, reports and process flow charts and diagrams. • Project and team management • Business Analysis • Contact Center technologies and management • IVR technologies • Report and Data Analysis • Various dialer technologies particularly Five9, SER/EIS, Stratasoft, Ameyo, Connect First • Languages and Applications: VFP, PHP, MySQL, MSSQL, VBA, XML, HTML, JavaScript, ASP, Visio, Lucidchart, Microsoft programs, Excel automation, Google docs/sheets etc. • Project Management Software - Matchware Mindview / Mind Maps and Gantt charts • Software Application Management/development (SDLC) using cloud computing and technologies [SaaS] My goal is to offer varied consultant services with utmost dedication and honesty as I have done in the past with proven track record of exceptional customer satisfaction. I have been able to accomplish all my job assignments with quality service, due to my diverse educational background, unique combination of skills, business sensibilities and experience coupled with dedication, focus and attention to detail. Thank you for taking the time to check my profile and I hope I can be of service to your organization.

An expert translator specializing in HTML/JSON/PO formats, I also excel in translating novels with a detail-oriented approach. I don't over-profile myself but value your time and money. So let's make it clear, I can help you: -Build an English/Chinese website from scratch. -Translate your WordPress website between English and Chinese. -Develop web pages tailored for information collection and inventory, order, and price management. -Assist in obtaining ICP licenses in Mainland China. -Provide recommendations for reliable hosting platforms in China, covering domain name registration and server hosting. -Set up a Linux environment configured for PHP+MYSQL. About translating: I never use software to translate. Feelings and traditions are much more important than words. People communicate not only by words but also by hearts. I'm a native Chinese speaker and live in China. Wanna know about Chinese conventions and traditions? I'm the right person. I REFRAIN FROM SHOWCASING MY PAST CLIENTS' PROJECTS AS I RESPECT EACH CLIENT'S PRIVACY, AND I ASSURE YOU THAT I WILL TREAT YOUR PRIVACY IN THIS MANNER AS WELL. LET'S GET STARTED WITH A FREE 500-WORD SAMPLE RIGHT NOW! About coding: I've been coding for over a decade. I have completed numerous projects for my friends and clients with a strong command of Website design and App/Website localization. I know that perfect projects require a considerable amount of time for optimization,plans may change at any moment due to fresh new ideas. I have the utmost patience to handle such situations. I'm looking forward to working with you!