Completion of an accounting and inventory system (70% completed)

@Microlent

Hello, I am Dr. Rajesh Rolen, PhD in Computer Science & Engineering, with experience of over 20+ years in API Development, Software Development, Web Development, .NET, ASP.NET, C# Programming, WPF As a preferred freelancer in the top 1%, I have done 400+ projects here on freelancer.com, I have 4.9 ratings out of 5 on average, which showcases my quality of work and timely delivery. Key Highlights: - Free Hosting Support on the Cloud or any desired platform. - Free 3 months of post-delivery support to ensure that our client doesn’t face any challenges after the launch of the project. - Free Dedicated tester on projects to ensure quality delivery, so clients don’t need to act as a tester. - 10+ Years experience UI/UX team to ensure intuitive UI. Portfolio: https://www.freelancer.com/u/Microlent Please open the chat and send me a message, so we can have a more detailed discussion about the project to give you the project timeline and cost. Thank you for considering my services. I look forward to engaging in a productive conversation and understanding how I can be of assistance in bringing your project to life. Regards Rajesh Rolen

@shaktistanwar

Hi, I can enhance your existing .NET/C# WPF accounting and inventory application using the available source code without unnecessary rewrites. I can handle: Accounting & inventory module enhancements Reports and print setup/configuration Bug fixing and performance optimization REST API for Web & Mobile applications Offline functionality with automatic synchronization License management system Database and application performance improvements I’ll first review the existing architecture and source code, then implement the required features while maintaining compatibility and stability. I’m ready to start immediately and can work directly with your existing codebase. Best regards, Shakti Singh

@Hubready

Hello!, This is James from Hollywood... I read your project carefully, and the main challenge is clear: the system is already 70% complete, so the priority now is safely finishing the accounting side without breaking the existing inventory workflow. That’s the part I’d focus on first. With the full source code, I’d approach it in phases: 1) review the current .NET/C# WPF structure and find the missing pieces 2) map the accounting additions to the existing database and UI flow 3) implement and test each module step by step 4) verify edge cases, data accuracy, and integration before delivery I’m very comfortable working inside existing codebases, especially where stability and clean handoff matter. I’ve built similar business tools and desktop systems where accuracy, consistency, and maintainability were the priority. A few relevant examples of my work: - a desktop billing and stock tracker for a regional wholesaler - a WPF order management app for a logistics team - an internal accounting dashboard connected to SQL Server - a .NET business app with inventory, invoices, and reporting Quick questions: 1) Which accounting additions are still missing exactly? 2) What database are you using, and are there any APIs or stored procedures I should preserve? 3) Do you want only completion, or also cleanup of any unstable parts I find? If you want, I can start by reviewing the source and giving you a practical completion plan before coding.

@WOFZahid

Hello, I am interested in working on your project. I have strong experience in .NET, C#, and WPF desktop application development** and can work efficiently with your existing full source code. I can assist with all the required areas, including: • Enhancements to the Accounting Module • Improvements and new features for the Inventory Module • Development of custom Reports • Print and printer setup configuration • Bug fixing and troubleshooting • Performance improvements and application optimization • Development of APIs to support future Web and Mobile applications • Offline functionality with automatic data synchronization when the internet connection is restored • Secure License Management System development Since the full source code is available, I can first review the existing architecture and understand the current workflow before implementing the required changes. My approach is to make improvements in a structured way while ensuring that existing functionality is not affected. I focus on clean, maintainable code, reliable performance, and scalable solutions. I can also help prepare the system architecture for future Web and Mobile integration. I would be happy to discuss your current application, requirements, and priorities and suggest the best approach for completing the project successfully.

@vishal1145

Your WPF application will face severe performance degradation if the data synchronization logic isn't optimized for offline-first architecture. Without proper conflict resolution, you'll get duplicate records when multiple users reconnect simultaneously. Quick questions - what's your current database size and expected concurrent user count? And are you planning token-based or hardware-based licensing? Here is the architectural approach: - WPF PERFORMANCE: Implement async data binding with virtualization to prevent UI freezing during large inventory queries under 500ms load time. - OFFLINE SYNC: Build conflict resolution using vector clocks and queue-based sync to handle simultaneous updates without data loss. - API DEVELOPMENT: Design RESTful endpoints with JWT authentication and rate limiting to support mobile clients at 1000+ requests per minute. I've completed 8 similar .NET projects including a multi-tenant inventory system handling 50K SKUs with real-time sync. Let's schedule a 20-minute technical review to validate the existing codebase architecture before finalizing scope.

@corpmember29

EXPERIENCED .NET/C# DEVELOPMENT TO ENHANCE YOUR EXISTING ERP WITHOUT DISRUPTING CURRENT OPERATIONS. Hi, I can work directly with your existing .NET/C# WPF source code and extend the system cleanly while preserving the current architecture. With 12+ years of IT experience, I can handle: • Accounting & inventory module enhancements • Custom reports and print configuration • Bug fixing and performance optimization • REST API for future Web/Mobile applications • Offline-first functionality with automatic sync after reconnection • License management and activation system • Database integration, validation and security Approach: review existing codebase → understand modules/data flow → implement enhancements → optimize → test existing + new workflows → deliver documented source and deployment build. I’ll ensure the API and offline synchronization layer are designed so future web/mobile applications can use the same business logic without rebuilding the core system. I can review the source code and requirements to provide an accurate timeline and fixed/milestone-based estimate.

@Hrolgar

The trade-off worth settling before I touch any code: do I bolt the new API and offline sync straight onto the existing WPF data layer, or spend a day or two first tidying the accounting and inventory tables so sync has something clean to key off. Bolting on gets you moving faster but every quirk already in that schema turns into a sync bug down the line. Tidying first costs a little up front and means the mobile side isn't fighting the same data model the desktop bugs are living in. That's really the decision that matters here, because the reports, print setup and bug fixes are the smaller half of this job. Most bids on a "70% done WPF app" will price it like a finishing job and quote the API, offline sync and licensing as an afterthought. Offline-first with real reconnection handling means every write needs a local queue and a merge strategy, not just a retry loop, and the license system has to hold up under that same offline state without becoming something a user can just copy between machines. I'd keep the API versioned and thin so the mobile client isn't blocked on WPF changes, and use a local SQLite queue on the client for the sync piece. M1: API layer plus auth and the core accounting/inventory endpoints, $250, 5 days. M2: Offline sync engine, conflict handling and reconnection logic, $250, 5 days. M3: License management, new reports, print setup, remaining bug fixes and performance pass, $250, 4 days. 750 total is my opening number off what's posted, the bit that could move it is how many tables actually need to go offline and how printing's wired right now. Send me repo access and I'll have a tighter number back tomorrow.

@denisSolution

Hi, I'm Denis, a full-stack developer specializing in .NET and C# for accounting and inventory systems. You need to complete your 70% finished system by adding accounting/inventory features, reports, print setup, bug fixes, performance optimization, and an API for web/mobile with offline sync and license management. I’ve built similar systems where accounting and inventory workflows had to integrate seamlessly while ensuring data consistency. The API was critical for mobile access, so I focused on clean endpoints, offline handling, and efficient sync. I’d start by reviewing your codebase to understand the current state, then prioritize accounting/inventory additions based on dependencies, followed by reports, print config, and API development. Offline sync would use local storage with conflict resolution, and license management would be a lightweight validation service. Risks include unclear report/print requirements (I’d align early) and offline sync performance (I’d test with realistic data volumes). I can begin immediately—let’s discuss details. Thanks, Denis.

@ozbas

As your project is already 70% completed, I understand the importance of building upon the existing foundation and ensuring a seamless integration of the new enhancements. With over a decade of experience in full-stack software development which includes robust .NET and C# WPF expertise, I believe I am the ideal fit for completing your accounting, inventory system, and much more. My multifaceted skill set also extends to developing reports, print setup configuration, bug fixing, performance improvement, API development and offline functionality - features critical to your project. Where I believe I truly stand out is in my commitment to producing software solutions that are both efficient and scalable. My grasp on various integration processes such as payment gateway APIs and third-party integrations will be valuable in developing an API to support your web and mobile applications. The depth of my skill set combined with a longstanding passion for delivering highly customized software solutions positions me well to tackle any challenges your project present. My track record of successful projects’ completion along with ongoing technical support demonstrates that I don’t just deliver code but solid solutions that transform businesses. Working together we can ensure your accounting and inventory system reflects the unique needs of your business while standing the test of time. Let's connect soon and discuss the next steps!

@naminghn

Hi there, I can enhance the existing accounting and inventory system by adding the specified modules, developing precise reports, and optimizing bugs for superior performance. Additionally, I will set up the API to ensure smooth functionality for both web and mobile applications while implementing offline capabilities with automated synchronization. Your satisfaction is my priority and I guarantee that I will deliver you a high-quality result. Regards, Ali

@ost

As a Senior Full-Stack Web & eCommerce Developer with over 10 years of experience, I have had the opportunity to work on diverse digital projects in various domains and technologies. The broad spectrum of my skillset directly aligns with your project's needs, specifically in terms of .NET, C# WPF, API development and software development. I am well-versed in your technology stack and have an acute understanding of accounting systems and inventory management from my previous engagements. In addition to enhancing the accounting module, tweaking the inventory module, developing reports, and setting up print configurations, I will also bring a lot of value to your project by optimizing its performance and developing an API to seamlessly support your Web and Mobile applications. My expertise in offline functionality with automatic data synchronization would ensure smooth operation even without internet connectivity. I pride myself on delivering clean, scalable, and maintainable code that forms the core of successful projects. Whether it be resolving bugs or putting a licensing management system in place, you can count on me for efficient problem tackling and effective implementation. Continuous client satisfaction through clear communication, attention to detail, timely delivery, long-term support, and ability to handle complete projects sets me apart. Reach out now to turn your imminent completion into a roaring success!

@sf264

Hello, I can complete the remaining part of the project. Kindly share the source code via chat so we can discuss more details. Let's get started, Fahad.

@Prutheus

Finishing someone else's 70% is a different discipline from building fresh — the risk is that "adding reports" quietly breaks the accounting module. So I would read and run the existing code before touching anything. How I would work through your list: - Audit the WPF/.NET codebase and current data model, then order the work: bugs first, then the accounting/inventory additions, then reports and print setup - The API for web/mobile designed against the existing domain model, not bolted on — same rules server-side, no divergent logic - Offline with sync-on-reconnect: conflict rules defined explicitly (last-write-wins is rarely right for stock movements) - Licence management kept simple and offline-tolerant Proof: I build inventory, warehouse and ERP-style systems in production for industrial clients, including offline-capable clients that sync back. Can you share the repo and your prioritised list? I would start with the bugs so the system is usable while the rest is built. Martin

@chiragpipal

⚠️ If you're not happy, you don’t pay. ⚠️ Hi, Thank you for checking my proposal and sharing the detailed project brief. I can build your enhanced accounting and inventory solution using .NET and C# WPF with a robust and user-friendly design. I will deliver: • Additions to the accounting module • Additions to the inventory module • Development of comprehensive reports • Print setup configuration • Bug fixing and performance improvements • Development of an API for web and mobile applications • Offline functionality with automatic data synchronization • License management system You will also receive: • Detailed documentation and support. I am confident I can execute your vision professionally and efficiently. Looking forward to discussing timeline and next steps. Best regards, Chirag Pipal.

@mahads31

As a skilled and experienced technology professional like myself, it sounds like your project and I were made for each other. My proficiency in .NET, C#, and API development are highly applicable to your accounting and inventory system's enhancements. I can competently add the required features, tackle bug fixing, maximize performance, develop insightful reports, configure print setups, and even implement an offline functionality with automatic data synchronization. On top of this, my wide-ranging skills in software development, database management, and web development uniquely equip me for your project. Not only can I focus on optimizing the system's current performance but I can also build a fully-functional API to support your Web and Mobile applications. Aside from improving the system you already have,I will also bring my unparalleled passion for building technology that is scalable,long-lasting,and improves business viability. When we embark on this project together, you're not signing up with just any freelancer - but rather a technology partner committed to your long-term success. Between my adaptable skills and experience,I have proven time and time again that I can create highly efficient systems tailor-made for businesses of any magnitude. So why choose me? Because you need Mahad Sheikh by your side to transform your vision into impactful results that withstand the test of time. Let's make this happen!

@jeanpatrickr8

Hello, I appreciate the opportunity to bid on your project involving enhancements to your accounting and inventory modules using .NET and C# WPF. I understand you are looking to expand functionality, improve performance, and develop a robust API for your web and mobile applications. With over five years of experience in software development, I have successfully delivered similar projects that required complex integrations and optimizations. My expertise in .NET and C# allows me to effectively address your needs, particularly in developing user-friendly reports, implementing print setup configurations, and ensuring seamless data synchronization for offline functionality. To achieve your goals, I propose the following approach: - Review the existing source code to identify enhancement opportunities in the accounting and inventory modules. - Implement necessary additions while ensuring optimum performance and fixing any existing bugs. - Develop a comprehensive API to facilitate integration with web and mobile applications. - Conduct thorough testing to ensure offline functionality and synchronization works flawlessly. I am eager to begin this project and am confident in delivering high-quality results within your timeline. I look forward to discussing further details and how I can best support your objectives.

@tyronet2

You need your existing .NET/C# WPF application extended without disrupting accounting, inventory, or daily operations. My background includes C# and 9+ years of full-stack development, with production e-commerce and payment automation at Poundit. I’d first review the source, database, and current workflows, then agree on incremental changes for reports, printing, bugs, and measured performance bottlenecks. A separate API layer would support future web and mobile clients. Offline changes would use a persistent queue, duplicate protection, and explicit conflict rules so reconnection cannot silently overwrite stock or financial records. Licensing would define activation, expiry, and offline grace behaviour. Each phase would include regression tests and handover notes. Which database and .NET version are in use, and can multiple devices edit the same records offline?

@shawanay

I am an experienced .NET developer skilled in C#, WPF, ASP.NET, accounting/inventory systems, REST APIs, offline synchronization, reporting, and performance optimization. I will do, * Review and extend the existing WPF codebase with the required accounting and inventory functionality while preserving current business logic. * Develop and improve reports, printing configurations, fix existing bugs, and optimize database queries and application performance. * Build a secure ASP.NET API layer for future Web and Mobile applications, keeping the desktop application and backend architecture maintainable. * Implement offline-first functionality with automatic synchronization after reconnection, including conflict handling, plus a secure license management and activation system. Q: Is the current WPF application connected directly to a central database, or does it already have a local database/cache that we can extend for offline synchronization? I can also share relevant .NET/C#, WPF, ERP/accounting, and API development work. Regards, Shawana

@CorporateRD

Hey there, Since the system is already around 70% completed, can you share the current source code and a list of completed versus pending modules? I have strong expertise in .NET, C#, WPF, accounting and inventory systems, ERP development, REST APIs, Web & Mobile integration, offline synchronization, database optimization, reporting, performance improvement, bug fixing, code refactoring, license management, and secure application development. For the remaining accounting work, which features are still missing or not working as expected? Are you looking for new accounting workflows, reports, taxes, invoices, payments, or improvements to existing functionality? I start by reviewing the existing 70% completed source code, database, modules, workflows, and pending functionality to understand exactly where the project stands. Then we complete the accounting and inventory modules, develop reports and APIs, add offline synchronization and licensing, fix bugs, optimize performance, and thoroughly test the complete system before final delivery. Let's jump over an on-site chat or call to walk through everything to avoid confusion. Budget and Duration are placeholders. Kind Regards, Royal Design :)