.NET is a development framework that enables developers to create applications across different platforms to simplify and speed up development. A .NET Developer can help clients create applications, modernize and update existing code, or produce new code utilizing the .NET framework.

Developers experienced in the .NET suite of technologies and languages such as C#, VB.net, and F# can assist clients with creating web or desktop based applications by taking their project ideas into reality. In addition, these developers also have exprience in building API integrations for various platforms and databases allowing for data imports/exports and storage solutions.

Here's some projects that our expert .NET Developer made real:

  • Automating Outlook emails and splitting messages
  • GraphQL-based API visualizations using .NET platform
  • Database setups and insights from data extracts from PDFs
  • Connecting cloud platforms to support web applications
  • Adapting trading indicators using PineScript for Viewing
  • Developing WinForms for live chart library reactions
  • Enhancing existing SharePoint sites with updates

With the number of projects our expert .NET Developers have helped clients complete, there's no doubt that it is a sought after powerful coding language that works well with modern technologies. Whether you have an idea you would like to bring to life or an application you would like to improve, our experienced developers can help you make it happen with the power of .NET.

Now that you have seen some of the things our expert developers have created, why not post your own project on Freelancer.com today and hire a knowledgeable .NET Developer that meets your particular needs? Our web platform offers secure payment options and quality assurance so you won't be disappointed with what we can do for you.

From 198,549 reviews, clients rate our .NET Developers 4.9 out of 5 stars.
Hire .NET Developers

.NET is a development framework that enables developers to create applications across different platforms to simplify and speed up development. A .NET Developer can help clients create applications, modernize and update existing code, or produce new code utilizing the .NET framework.

Developers experienced in the .NET suite of technologies and languages such as C#, VB.net, and F# can assist clients with creating web or desktop based applications by taking their project ideas into reality. In addition, these developers also have exprience in building API integrations for various platforms and databases allowing for data imports/exports and storage solutions.

Here's some projects that our expert .NET Developer made real:

  • Automating Outlook emails and splitting messages
  • GraphQL-based API visualizations using .NET platform
  • Database setups and insights from data extracts from PDFs
  • Connecting cloud platforms to support web applications
  • Adapting trading indicators using PineScript for Viewing
  • Developing WinForms for live chart library reactions
  • Enhancing existing SharePoint sites with updates

With the number of projects our expert .NET Developers have helped clients complete, there's no doubt that it is a sought after powerful coding language that works well with modern technologies. Whether you have an idea you would like to bring to life or an application you would like to improve, our experienced developers can help you make it happen with the power of .NET.

Now that you have seen some of the things our expert developers have created, why not post your own project on Freelancer.com today and hire a knowledgeable .NET Developer that meets your particular needs? Our web platform offers secure payment options and quality assurance so you won't be disappointed with what we can do for you.

From 198,549 reviews, clients rate our .NET Developers 4.9 out of 5 stars.
Hire .NET Developers

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    33 jobs found

    I need a skilled C++ developer to: 1. Update my existing code from using WMIC to PowerShell. 2. Correct the URL in the code to ensure it displays the correct image. 3. Adjust the login pattern in the code to align with recent updates made by the site.

    $151 Average bid
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    5 bids

    My C# .NET solution used to run flawlessly, but after the last rebuild it dies on launch because the SQL Server connection string can no longer be resolved and several tables are either missing or never get created. I need you to: • inspect the current connection string in appsettings / , repair or replace it, and prove the app connects to the correct SQL Server instance; • trace the Entity Framework / Code-First (or raw SQL) migrations, make sure all expected tables and seed data exist, and clean up any drift; • explain briefly what went wrong so I can avoid the same pitfall at the next deployment. Once the project compiles and the app starts without errors, returning data from every affected table, I’ll consider the task complete. Feel free to work in Visua...

    $206 Average bid
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    141 bids

    We're looking for a Backend Developer – .NET, 100% remote, European CET time Modernization Project within 3-6 months with ongoing support later, flexible working hours, part-time commitment is allowed You will be responsible for the core modernization and reliability of our internal testing application's backend. This system handles critical measurement data from electronic device validation. Your mission is to lead the technical upgrade from a legacy .NET system to .NET 4, and support the migration off the database from MSSQL to PostgreSQL, and build / extend the REST API to support a new, powerful frontend. Key Responsibilities: • Backend System Upgrade: Plan and execute the migration of the existing application backend from an older .NET version to .NET 4/4.8 (or .N...

    $25 / hr Average bid
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    113 bids

    We are looking for a seasoned C# / UI Engineer to take ownership of our application's UI architecture. We are currently modernizing our technology stack and migrating heavily toward Unity UI Toolkit. In this role, you will architect a reactive, scalable UI system that operates seamlessly across both mobile and desktop platforms. While Unity is our core framework, we place greater value on strong C# engineering fundamentals than on traditional “gameplay” scripting. If you come from a .NET/WPF background and want to apply those skills to a high-performance visual application, this role is an excellent fit. Your Responsibilities: • UI Architecture: Lead the implementation of new features using Unity UI Toolkit, replacing legacy UI systems with modern, maintainable standa...

    $3732 Average bid
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    120 bids

    I’m building a custom ASP.NET MVC web application whose centerpiece is an interactive dashboard. The dashboard must surface key metrics with clear visualisations and allow me to drill down, filter and export data-driven insights on demand. Custom report generation is critical: users need to click a button and receive a professionally formatted PDF powered by the iTextSharp library. Your job is to wire up the MVC project, design the views and controllers for the analytics area, and integrate iTextSharp so the same data that feeds the on-screen charts can also be compiled into downloadable reports. I already have a SQL Server schema in place; you’ll connect to it via Entity Framework (Code First or Database First is fine) and shape the queries that drive both the dashboard wid...

    $12 / hr Average bid
    $12 / hr Avg Bid
    73 bids

    I need an AI-driven workflow that starts with raw Excel workbooks and ends with ready-to-present Power BI-embedded PowerPoint files. At its core, the agent must take over repetitive data-entry chores—copying and pasting data between sheets, applying consistent cell formatting, and generating the routine summary reports I currently build by hand. Once the spreadsheets are in shape, the same pipeline should feed that refreshed data straight into Power BI, refresh the visuals, and export the updated dashboards as slides. Here is what I expect to receive: • An autonomous script, service, or low-code bot that opens designated Excel templates, performs the three data-entry tasks above without human clicks, and logs every step for traceability. • Automated refresh of the linke...

    $253 Average bid
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    108 bids

    I run a live production app that combines a .NET 8 microservice back-end with a React Native front end, hosted on Ubuntu servers in AWS. Right now the most urgent need is to deliver new functionality, and nearly all of that work sits squarely on the back end. Your first assignments will centre on extending our microservice architecture and exposing new, well-documented APIs. You’ll be writing C#, containerising services, wiring events through RabbitMQ, and persisting data in PostgreSQL—then shipping the code straight into production. I pay $6/hour for hands-on development only; time spent reading code, researching, or experimenting is on the freelancer. Work independently, own your tasks, communicate clearly, and suggest improvements when you see them. Do that well and there&r...

    $12 / hr Average bid
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    98 bids

    WORKFLOW MANAGEMENT SYSTEM Enterprise UI Development – Blazor C# Web + iOS + Android Mobile Apps January 20, 2026 Key Facts - Platform: Web (Responsive) + iOS + Android (via Blazor Hybrid) - Pages: 9 major pages + 30+ components - API Endpoints: 90+ (backend ready) - Database: SQL Server (35+ tables) - Timeline: 8-12 weeks 1. PROJECT OVERVIEW Seeking a Senior Blazor C# developer to build the UI layer for an enterprise UGC Workflow Management System. Backend is production-ready (.NET 8, 18 controllers, 12 services, 90+ endpoints, JWT/RBAC, PDF/DOCX generation, workflow engine). Goal: modern, responsive UI for Web, iOS, Android with ~90% code sharing. 2. SYSTEM FEATURES (10 CORE PILLARS) 1) Workflow Management: Request lifecycle, multi-stage progression, routing, assignment, approv...

    $3441 Average bid
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    158 bids

    I’m building a cross-platform social media application that will let users create rich profiles, chat in real time, and scroll an algorithm-driven news feed. The front end is planned in React; on the server side I’m open to Python (FastAPI or Django), .NET, or Java—whichever lets you deliver clean, well-documented RESTful APIs quickly. Beyond the core features, I want to embed an AI-powered chatbot that can handle basic customer-support questions inside the app. If you already work with frameworks such as TensorFlow, PyTorch, or Azure Cognitive Services, that experience will be valuable. I’ll handle UI mock-ups and brand assets; you’ll translate them into responsive components, wire them to the backend, and integrate the chatbot so it feels native. I pre...

    $349 Average bid
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    112 bids

    I need a Windows-compatible desktop application built from scratch. At this stage the concept is defined at a high level, so I’m ready to discuss use-cases, UI flow, and the most suitable tech stack—whether that ends up being .NET, C#, C++, or another approach you can justify. Here’s what I expect once we agree on specifications: the compiled installer, well-commented source code, and a concise setup/user guide so I can maintain or extend the program later. Clean architecture, clear documentation, and timely progress updates are important to me, and I’m happy to iterate quickly through milestones to keep everything on track. If you have a strong background in Windows software development and can walk me through the best way to turn the requirements into a reliable...

    $124 Average bid
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    26 bids

    I need a SharePoint site primarily for internal document management and statistics report management Key Requirements: - Implement version control on documents - Set up access permissions for the internal team Ideal Skills: - Experience with SharePoint setup and configuration - Familiarity with version control and access permissions - Strong background in document management systems Looking for a freelancer who can create a structured, user-friendly environment for our internal team.

    $136 Average bid
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    26 bids

    We are looking for a senior SharePoint freelancer (SharePoint Online / Microsoft 365) who is highly experienced in building SharePoint-based data structures, Power Automate flows, and Power BI dashboards. Goal: Create a Group Marketing Dashboard with: One overall Group overview Separate, clickable dashboards per entity (each entity can view its own KPI page, plus Group leadership can see the consolidated overview) Scope / What we need SharePoint data model Create SharePoint Lists (or improve existing ones) to store marketing KPI data KPI categories: Website KPIs (users/visits, sessions, engagement, conversions if available) SEO (impressions, clicks, rankings / GSC metrics if feasible) SEA (spend, clicks, conversions if feasible) Social Media performance (LinkedIn etc.) PR &...

    $801 Average bid
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    73 bids

    I want a lightweight Gen-AI application that lets me write a plain-language prompt and instantly receive a fully populated Autodesk Civil 3D site plan. The generated drawing must respect standard Civil 3D objects and styles and include road-design elements such as intersections, roundabouts, and complete drainage systems exactly as described in the prompt. The flow I’m after is simple: I type something like “Create a 500 m collector road with two T-intersections, one central roundabout, and a curb-and-gutter drainage network that ties into the existing surface,” press enter, and Civil 3D builds the geometry for me. No manual drawing—everything should appear as polylines, alignments, corridors, surfaces, and pipe networks ready for refinement. Core expectations &...

    $945 Average bid
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    21 bids

    I'm operating a care home service in Sweden, currently housing six clients who permanently reside in my establishment. I am not interested in the existing systems on the market, as they are prohibitively expensive and do not meet my needs effectively. They lack integration, proper development, and adherence to standards. What I require is a tailored system for my clients that includes the following features: 1. Implementation Plan: For each of the six clients, the system should cover nine different life areas (such as communication, health, daily life, free time, etc.). Each life area should define a goal, specify WHAT actions need to be taken, identify WHEN these actions should occur, and designate WHO will be responsible for them and HOW. 2. Documentation: This feature will allow...

    $707 Average bid
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    117 bids

    I’m looking to have a full-featured point-of-sale application built for Windows PCs that I can distribute to my own clients. They will install it locally, enjoy a 3-month free trial, and then move automatically to a paid monthly subscription, so licence management has to be baked in from day one. The user must be able to tailor three key areas on their own—interface layout, report generation, and inventory management—without calling a developer each time. Within the sales screen the software should accept Credit/Debit Cards, Mobile Payments, and Cash, storing each transaction type separately for reporting purposes. What I need from you: • An installer for Windows that runs cleanly on standard PC-based POS hardware • A licensing / activation module that start...

    $268 Average bid
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    51 bids

    I need a flow in Microsoft Power Automate that pulls KPI values from our SQL Server tables and turns them into polished, user-friendly PDF reports. The report must rely on a custom-designed template and display information with a mixture of charts, graphs, and tables so non-technical stakeholders can grasp trends at a glance. Our priority metrics revolve around operational efficiency—think throughput, cycle time, and utilisation—so the layout should spotlight those numbers first while still letting me expand to other KPIs later. The ideal solution lets me choose a date range (or other common filters) and then either schedule or trigger the report on demand. Once generated, the PDF should save to SharePoint and email key managers automatically. I am comfortable giving you read ...

    $853 Average bid
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    127 bids
    Windows Vehicle Check-In App
    4 days left
    Verified

    I need a desktop application built exclusively for Windows that streamlines our vehicle turnover process. The program must let staff be able to read information from a PDF document where we pull a list of vehicles going out and coming back in. Dont want to have to manually enter it it. 1 - Vehicles going out PDF - has a lot of fields - attached - also need to be able to mark if the vehicle is clean or not Vehicle coming in (Returning) - be able to right down the odo reading, if its full or not A clean, intuitive interface is important because the users range from mechanics to office staff. I would like straightforward navigation: a dashboard showing current yard inventory, a quick search bar for plate or unit number, and configurable user roles so only authorised users can amend re...

    $146 Average bid
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    116 bids

    Experienced DotNet developer required for Errors removal and Improvement work in thenafter Host on server. Developer should also have knowledge about Merger of sourcecode and database of his done-work with other developer's done-work on GitHub. Website Address - 1st User emailid- userany303@gmail.c Password- kaspersky 2nd User emailid- userany444@gmail.c Password- kaspersky At present, All functionalities of explained in below link- Errors removal and Improvement work which needs to be done explained in below doccument link- For better understanding, Sample of Previous developer's mentioned Tested Results explained in below link - Mention ‘TESTED RESULT' in below doccument link after hosting on ‘Test server’ after completion of 'Errors remo...

    $240 Average bid
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    16 bids

    I need an automated bridge that pulls attendance logs from my ESSL X2008 biometric punch machine and inserts them directly into our on-premise SQL Server database the moment each punch is recorded. The solution must: • Connect reliably to the X2008 using the official ESSL SDK or any proven alternative. • Stream new punch events in real time—no manual export or scheduled batch jobs. • Map every field the device provides (employee code, punch time, in/out flag, etc.) to the corresponding columns already present in my SQL Server table. • Handle network interruptions gracefully and guarantee no duplicate or missed records. • Include a simple configuration file or UI where I can change IP, port, or SQL Server credentials without editing code. Accep...

    $19 Average bid
    $19 Avg Bid
    3 bids

    I’m looking for an experienced developer to build a full-featured desktop application that runs smoothly on modern Windows machines (Windows 10 and 11). The exact feature set will be defined together once you’re on board, but at a minimum I’ll need a clean, intuitive GUI, reliable performance, and straightforward installation for end users. Feel free to recommend the tech stack you know will give the best result—whether that’s C#/.NET, C++ with Win32 or Qt, Python with PySide, or another Windows-friendly framework. What matters most to me is maintainable, well-commented code and an executable that installs without headaches. Deliverables • Compiled installer or MSI ready for distribution • Complete source code with clear inline comments &bull...

    $152 / hr Average bid
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    51 bids

    n8n Automation Google Sheets to PDF Autocrat to ZeptoMail Email Project Type One time project ⸻ Project Description We are looking for an experienced n8n automation developer to set up a simple workflow using self hosted n8n on Hostinger VPS Google Sheets and ZeptoMail. Autocrat PDF generation is already configured and working. The task is only to fetch the generated PDF and send it via ZeptoMail. ⸻ Required Workflow 1. A new row is added in a Google Sheet 2. Autocrat automatically generates a PDF which is already set up 3. n8n should a. Detect the new row or PDF availability b. Fetch the generated PDF from Google Drive c. Send a transactional email using ZeptoMail API d. Attach the PDF to the email ⸻ Tools and Access Provided 1. Self hosted n8n running on Hostinger 2. Google...

    $27 Average bid
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    12 bids

    First, I want the data layer to communicate with external accounting services through a REST-style API. The module should issue authenticated HTTP requests using only the methods I plan to expose—GET, POST and PUT—to push or pull records between the database and providers such as InFakt or Betterfly. I expect clean, asynchronous calls via HttpClient (or another modern .NET approach), clear error handling and concise helper classes that make future endpoint additions straightforward. Second, the system must generate invoice exports. When I select ‘Faktury’ in the UI, the code should collect the relevant rows and create XML files that fully respect the FA(3) KSeF structure. The output has to validate against the official XSD so that I can upload it to KSeF without ...

    $651 Average bid
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    87 bids

    I’m assembling a small, dedicated team of developers who can commit full-time hours to building and maintaining desktop applications. Your day-to-day will revolve around new feature development, refactoring legacy code, squashing bugs, and collaborating closely with me on release planning and UX improvements. Because the role focuses on desktop‐grade performance and cross-platform reliability, hands-on experience shipping production-ready Windows, macOS, or Linux apps is essential. I’m flexible on the specific language or framework you prefer—whether you thrive with Electron, .NET, Qt, JavaFX, or another stack, what matters most is that you can demonstrate polished, stable executables and a solid engineering process. Smooth CI/CD pipelines, clear Git habits, and readable...

    $30 / hr Average bid
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    130 bids

    I'm seeking an experienced .NET developer to assist with bug fixing in my application, specifically around payment processing using the Square Point of Sale SDK. I'm encountering error messages and exceptions during integration. Key Requirements: - Expertise in .NET development - Experience with Square POS SDK - Strong problem-solving skills - Ability to diagnose and fix integration errors Please provide examples of similar work done.

    $723 Average bid
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    82 bids

    ⚠️ Important – Read Before Applying This project requires real, hands-on experience with Tally integrations. Generic ERP developers or copy-paste bidders will be ignored. Write "GOFFY" as first word of proposal. Applications must answer the screening questions at the end of this post. Project Overview We are developing a production-grade middleware application to integrate our custom ERP with Tally. The middleware will: Allow master data mapping between ERP and Tally Handle B2B and B2C sales data separately Push GST-compliant sales vouchers into Tally Receive confirmation/status from Tally for synced transactions This is not a demo or POC. The solution must be stable, auditable, and scalable. Scope of Work (Non-Negotiable) 1. Middleware Architecture Standalone m...

    $447 Average bid
    $447 Avg Bid
    23 bids

    I need a Windows-only desktop application that streamlines my day-to-day data analysis work. At minimum the utility should let me import common formats such as CSV or Excel, inspect and filter the records, run simple statistical summaries (mean, median, standard deviation, counts), and export the results. Clean visualisations—basic line, bar and scatter plots—would be ideal so I can spot trends quickly without jumping to another tool. Responsiveness matters more than flashy UI; native Windows frameworks (WPF, WinForms, Electron, Qt—whichever you are comfortable with) are all acceptable as long as the final build runs smoothly on Windows 10 and 11 without additional installs. I’ll also need the complete, well-commented source code and a brief user guide so future tw...

    $132 Average bid
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    11 bids

    I need a Windows-only desktop application that quietly records how long each program stays active on an employee’s screen, captures the screen in near real-time, and then turns that raw data into clear working-hour, break-interval, and idle-time summaries. Breaks must be detected automatically from keyboard-and-mouse inactivity, without asking the user to click “Start” or “Stop”. Core flow • App launches on system start-up, runs unobtrusively, and stores data locally in an encrypted format. • When network connectivity is present, it should be able to upload the logs and image snippets to our existing server endpoint (REST or WebSocket—happy to follow your recommendation). • A lightweight dashboard is needed for managers to review da...

    $254 Average bid
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    24 bids

    I'm seeking a skilled developer to create an AI web app on the .NET platform. The app will serve as a recommendation system, providing content recommendations based on: - User activity data - External websites - Internal content database Key Requirements: - Develop algorithms for accurate content recommendations - Integrate multiple data sources - Build a user-friendly interface - Ensure scalability and security Ideal Skills: - Experience in AI software development - Proficiency in .NET development - Strong background in sSaaS platform development - UI/UX design experience Looking for a freelancer who can deliver a robust and innovative solution within budget.

    $11823 Average bid
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    42 bids

    I look after the entire IT stack for my company in Sri Lanka—everything from the switches and firewalls to the in-house web apps. Although I handle most of it myself, I now need a reliable partner to step in so I can keep pace with new projects. My first priority is network management. I need an extra set of expert hands to fine-tune our current setup, track down bottlenecks, harden configurations, and keep day-to-day performance solid. Firewalls and virus-guard tools are already in place; your focus will be on the network layer itself—routing, VLANs, traffic analysis, and proactive monitoring. At the same time, I develop in several languages, with ASP.NET being the platform I’m concentrating on right now. If you’re comfortable reviewing C# code, building small mo...

    $677 Average bid
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    32 bids

    Need help fixing the error message, "Compiler Error Message: CS0433: The type 'SitePage' exists in both 'c:windowsMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Filesroot9b6a826f417c9158[login to view URL]' and 'c:windowsMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Filesroot9b6a826f417c9158[login to view URL]'

    $1801 Average bid
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    26 bids

    Saya membutuhkan bantuan untuk merancang dan membangun aplikasi desktop yang berjalan mulus di Windows. Lingkup kerja meliputi: • Menyusun arsitektur dasar dan memilih stack (mis. C#, .NET/WPF, atau alternatif setara). • Mengembangkan antarmuka pengguna yang intuitif serta fungsionalitas inti sesuai spesifikasi yang akan saya jelaskan lebih lanjut. • Menyediakan file instalasi (.exe atau MSI) yang siap dipasang, lengkap dengan panduan singkat instalasi dan penggunaan. • Menyerahkan kode sumber terstruktur beserta dokumentasi singkat agar mudah saya kembangkan di kemudian hari. Saya terbuka mengenai metodologi pengembangan dan alat yang Anda pilih, selama hasil akhirnya stabil, cepat, dan mudah dipelihara di lingkungan Windows terbaru. Jika Anda sudah berpengalam...

    $739 Average bid
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    2 bids

    Je souhaite faire développer un logiciel entièrement sur mesure pour la plate-forme Windows. L’idée générale est déjà définie, mais j’ai besoin d’un·e développeur·euse capable de m’aider à affiner les fonctionnalités, concevoir l’interface, puis coder, tester et empaqueter l’application. Ce que j’attends : • Phase de cadrage : clarification des besoins, choix des technologies Windows les plus adaptées (C#, .NET, WPF, WinUI ou autre). • Conception : maquettes UI simples, schéma de base de données ou architecture si nécessaire. • Développement incrémental : livraisons régulières pour va...

    $754 Average bid
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    33 bids

    SQL veritabanlarını ve ilgili database dosyalarını doğrudan kendi bulut sunucumuza yedekleyecek, web tabanlı çalışan bir uygulama geliştirilmesini istiyorum. Uygulama tam yedekleme mantığıyla çalışacak; manuel veya zamanlanmış görevlerle alınan yedekler güvenli şekilde sunucuda saklanmalı. Rol ve izin yapısı net: • Admin – tüm sistemi, paketleri ve raporları yönetir. • Bayi – kendi müşterileri için paket oluşturur, satış sonrası süreçleri takip eder. • Kullanıcı – yalnızca kendi veritabanı yedeklerini görür ve geri yükleyebilir. Web panelinde bulunması gereken ana modüller: • Yedek yönetimi: yedek oluşturma, geri yükleme, sürüm geçmişi. &bul...

    $612 Average bid
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    29 bids

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