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We're building a lightweight Windows desktop agent for our SaaS gym management platform. The agent connects to eSSL/ZKTeco biometric fingerprint devices on the local network and syncs data with our cloud backend. WHAT THE AGENT DOES: - Connects to eSSL devices via TCP/IP (port 4370) using [login to view URL] (COM/ActiveX) - Polls our REST API for pending commands (sync users, set membership expiry dates, enable/disable users) - Executes SDK commands on the device and reports results back to cloud - Runs as a system tray app, auto-starts on boot - Includes a first-run setup wizard (enter API key → auto-discover device on LAN → connect) KEY SDK FUNCTIONS: Connect_Net, SSR_SetUserInfo, SetUserValidDate, SSR_EnableUser, SetDeviceTime2, ReadNewGLogData, SearchDevice, GetSerialNumber, BeginBatchUpdate/BatchUpdate TECH STACK: - .NET 8+ (WinForms or WPF) - C# with COM interop for [login to view URL] - REST API client (HttpClient) for cloud communication - Single .msi/.exe installer (Inno Setup or WiX) WE PROVIDE: - Complete developer brief document (12 sections, all SDK functions documented) - eSSL Standalone SDK v2.3 manual + Communication Protocol SDK with C# samples - Physical eSSL F22 device for testing (can ship to you) - Cloud API endpoints (we build these) - eSSL vendor support contact for SDK issues REQUIRED SKILLS: - C#/.NET desktop application development - COM/ActiveX interop experience - TCP/IP socket communication - Experience with biometric SDKs (eSSL/ZKTeco preferred, not mandatory) TIMELINE: Can be decided Attach your relevant portfolio and let me know if you've worked with eSSL/ZKTeco devices before.
Projekt-ID: 40239758
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26 freelancere byder i gennemsnit ₹34.002 INR på dette job

I have great freelance experience in AI,Open AI, Dot net core, Azure cloud, Devops,CI/CD, Rest API ChatBot,WPF ,MVVM,c#, SQL server, react, MVC, Web API,GIT. In profile I have completed all projects with same tech stack. I can deliver good quality product with in time line.
₹25.000 INR på 7 dage
2,7
2,7

Hi, I can develop your Windows desktop agent in .NET that integrates with your eSSL device/system, handles real-time events, secure data exchange, and reliable API/sync with your backend. I’ll deliver clean, stable code with proper error handling and tested installation so your agent works smoothly on Windows. Regards, Bharti
₹25.000 INR på 7 dage
2,2
2,2

As a seasoned Full-Stack Developer with a diverse range of skills, I am well-equipped to deliver the exceptional outcome you seek for your Windows Desktop Agent project. My familiarity with both WinForms and WPF on .NET 8+ makes me capable of crafting a lightweight, efficient solution tailored perfectly to your needs. Additionally, I have significant experience integrating disparate systems via RESTful APIs using HttpClient. Specifically, my exposure to COM/ActiveX interop coincides directly with your requirement of syncing your gym management platform with eSSL biometric devices. Throughout my 6-year career, I've dealt with various integrations and as such am well-versed in navigating communication protocols and SDK commands, paralleling the intricacies you expect from this undertaking. Though I haven't worked explicitly with eSSL/ZKTeco before, my extensive experience with other biometric SDKs instills in me the swift adaptability that's key for an effective integration. I believe that my comprehensive skillset will enable me to translate your vision for the project into reality while keeping in mind its unique demands and intricacies. What distinguishes me is not only technical proficiency but also an ability to grasp clients' nuances and deliver products that resonate on a deeply functional level. Let's discuss how we can drive your gym management solutions exponentially forward!
₹23.000 INR på 12 dage
0,4
0,4

Hi there, You’re absolutely in the RIGHT PLACE. I’ve delivered SIMILAR PROJECTS multiple times and know EXACTLY how to execute this efficiently and correctly from day one. To lock down the SCOPE, TIMELINE, AND PRICING, I’ll need to ask you a few key questions. Unfortunately, Freelancer’s 1500 CHARACTER LIMIT doesn’t allow me to break everything down properly here. Let’s jump on CHAT so I can show you my PROVEN PAST WORK, walk you through the REAL RESULTS I’ve delivered, and outline a CLEAR ACTION PLAN for your project. You’ll immediately see why my approach is DIFFERENT and EFFECTIVE. If you’re serious about getting this done RIGHT, I’m ready to move forward. Looking forward to CONNECTING and WINNING TOGETHER. Cheers, Ayushmaan Sahu
₹12.500 INR på 7 dage
0,0
0,0

Hello, I'm Kamlesh Kumar With 14+ years of experience across multiple platforms, I've helped build numerous startups through dedication and hard work. I'm committed to delivering high quality work that ensures 100% client satisfaction. Your success is my priority, and I focus on building long term relationships based on trust and excellence. Expertise: Web & App Development - React.js, Node.js, JavaScript, PHP, MySQL, WordPress, Magento, Codelgniter, Shopify, .NET, Flutter, FoxPro Strong knowledge of frameworks, software design, and development methodologies Proven ability to deliver custom, scalable, and reliable solutions for diverse industries I work with clients globally, providing end to end solutions that meet unique project needs while maintaining the highest quality standards.
₹25.000 INR på 7 dage
0,0
0,0

Hi, I’d be happy to work on your project. I have 12+ years of experience in developing customized software tools, web applications, and desktop solutions for both internal teams and external clients. My skills include C, C++, C#, ASP.NET (WinForms & MVC), .NET Core, WPF, Flutter, and database work with MS SQL & MySQL. I’ve also built and integrated RESTful APIs and modern web interfaces using HTML, CSS, Bootstrap, JavaScript, and jQuery. Let’s connect and discuss further.
₹65.000 INR på 7 dage
0,0
0,0

Hyderabad, India
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