.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.

Od 193,317 recenzí, klienti hodnotí našeho pracovníka .NET Developers 4.9 z 5 hvězd.
Zaměstnat .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.

Od 193,317 recenzí, klienti hodnotí našeho pracovníka .NET Developers 4.9 z 5 hvězd.
Zaměstnat .NET Developers

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    29 Nalezené pracovní možnosti

    I need a Windows-based typing application, built to mirror the exact pattern used in Indian government recruitment exams. The program must run smoothly in both online and offline mode so that a candidate can practise anywhere and then sit a timed test even if the internet drops. Core functionality • Practice mode stocked with graded typing exercises. • Full-length mock tests that reproduce the official exam interface, timer and font rendering. • A performance dashboard that tracks speed, accuracy and trend lines over time. Language support All content, UI prompts and result reports should work in English and Hindi from day one. If you architect the system cleanly I can add further regional languages later, so keep strings externalised. Benchmarks Speed and accur...

    €506 Average bid
    €506 Průměr. nabídka
    14 nabídky

    I'm seeking an experienced developer to build a desktop-based fleet management tool for heavy equipment. Key features required: - Real-time tracking of equipment - Maintenance scheduling - Usage reporting Ideal Skills and Experience: - Strong background in desktop application development - Experience integrating API feeds from web and telematics - Proven track record in building similar management tools Please provide: - Detailed project proposals - Examples of past work and relevant experience

    €938 Average bid
    €938 Průměr. nabídka
    152 nabídky

    Pour renforcer ma plateforme de voyage développée en .NET, je souhaite brancher la couche « shopping » de l’API Sabre via leurs webservices GraphQL. L’objectif premier est d’offrir aux utilisateurs une expérience d’achat fluide et rapide, entièrement pilotée en C#. Fonctionnalités attendues • Recherche de prix en temps réel • Consultation de la disponibilité des vols • Déclenchement du paiement en ligne directement depuis le flux Sabre Le code doit être structuré en services réutilisables : idéalement un petit SDK interne (classement par domaines : Pricing, Availability, Payment) accompagné de tests unitaires et d’une document...

    €405 Average bid
    €405 Průměr. nabídka
    38 nabídky

    We are looking for a highly skilled Full-Stack .NET Developer with experience integrating Artificial Intelligence tools into modern web platforms. The goal of this project is to build intelligent digital platforms that combine enterprise software development with AI capabilities such as document analysis, AI assistants, automation workflows, and smart dashboards. The developer will help design scalable architecture and integrate advanced AI APIs into production-ready systems. We are looking for someone who understands both traditional backend engineering and modern AI integration. Responsibilities • Develop backend services using ASP.NET Core and C# • Build secure and scalable REST APIs • Design modular and scalable system architecture • Integrate AI APIs such as O...

    €47 / hr Average bid
    €47 / hr Průměr. nabídka
    75 nabídky

    Je souhaite disposer d’une application de bureau fonctionnant exclusivement sous Windows pour gérer, au même endroit, mon stock et mes fiches clients. Fonctionnalités indispensables • Suivi des niveaux de stock en temps réel : création, entrée, sortie et ajustement des articles. • Rapports des stocks exportables (PDF ou Excel) avec filtres par produit, période et état de réapprovisionnement. • Fiches clients simples : coordonnées, historique d’achats, notes internes. Spécifications techniques attendues – Application 100 % desktop (pas de composant web). – Compatible Windows 10 et versions ultérieures. – Base de données locale (SQLite, SQL ...

    €544 Average bid
    €544 Průměr. nabídka
    14 nabídky

    I need a production-ready backend that powers a multi-tenant School Management SaaS. The stack is fixed—ASP.NET Core 8 Web API with EF Core and SQL Server—so you should be completely comfortable designing clean, modular code in that environment. Core scope • Build the entire API layer only; no front-end work. • Architect true multi-tenancy from day one, separating data per school while keeping shared services efficient. • Implement rock-solid authentication and authorization, plus fine-grained role-based access control. Day-to-day users include Students, Teachers, Parents, School Admins, Platform Admins and other school-specific roles, so permissions must be both flexible and secure. • Model every major domain: school setup/configuration, student/pa...

    €1875 Average bid
    €1875 Průměr. nabídka
    77 nabídky

    I have a desktop solution that mixes C# (WPF, a few ASP-NET-style service layers) and VB.NET (classic Windows Forms). Both stacks matter equally, so code will sometimes jump between the two. Current priorities are: • Robust user-authentication built directly into the client • Smooth, responsive data-visualisation screens (charts/grids) • Reliable file-handling routines for import, export and local storage The existing repository is in Git; each module compiles under the latest stable .NET. I’ll grant access branch-by-branch so we can review pull requests together before merging. Deliverable is a working desktop build with clear, well-commented source that shows the three features above fully integrated and tested on Windows 10/11. If a lightweight service o...

    €126 Average bid
    €126 Průměr. nabídka
    61 nabídky

    I am building a next-generation AI-powered nutrition platform for families that combines mobile applications, intelligent learning systems, IoT smart plate hardware, and machine learning nutrition analytics. Our goal is to help parents develop healthy eating habits for children through interactive learning, meal tracking, and intelligent recommendations. We are seeking a Senior AI / Full-Stack Systems Engineer who can own the most technically challenging aspects of the platform, from AI features and data architecture to IoT integrations and production-grade AI systems. This is a high-impact, hands-on role where you will directly shape the core architecture and intelligence of the product. The Product The platform includes: 1. Parent & Child Mobile Application Parents onboard and ...

    €249 - €748
    Zapečetěný
    €249 - €748
    241 nabídky

    We are looking for a software developer with experience in hardware or fiscal device integrations to build a backend service that exposes the functionality of a Tremol S25 fiscal printer through a secure REST API over HTTPS. The goal of the project is to create a middleware service that allows external applications (POS systems, ERP software, or web applications) to communicate with the Tremol S25 fiscal device using standard HTTP REST requests. Project Requirements: Integrate the official Tremol SDK (ZFPLAB or equivalent) to communicate with the Tremol S25 fiscal printer. Develop a REST API over HTTPS that exposes the main fiscal operations. The service will run on a Windows PC connected to the fiscal printer via USB. Clean architecture and well-structured code. Provide clear API document...

    €428 Average bid
    €428 Průměr. nabídka
    170 nabídky

    We're looking for a motivated Junior-Mid Level Software Engineer who's excited about building real products, learning fast, and working with modern GenAI/OpenAI technologies. This role is ideal for someone early in their career who wants to grow into a well‑rounded engineer with strong technical and communication skills. What You’ll Work On - Contribute to the design, development, testing, and deployment of software features across the full SDLC. - Build and maintain services, APIs, and internal tools that support OpenAI‑driven applications. - Collaborate with senior engineers to understand technical constraints. - Participate in code reviews, write clean and maintainable code, and follow engineering best practices. - Document your work clearly and communicate technical de...

    €19 / hr Average bid
    €19 / hr Průměr. nabídka
    190 nabídky

    I need an experienced .NET and Blazor developer who can give my product a full-time focus—eight hours a day ,starting asap —while working side-by-side with my lead engineer during Indian Standard Time. The codebase is already in production; our goal over the coming weeks is to tidy up rough edges, harden performance, and keep new issues from sneaking in as we roll out incremental updates. Tech stack you’ll touch daily: ASP.NET Core APIs, a Blazor front end that leans on hooks and functional components, JSON-heavy data exchange, and Azure resources provisioned with Bicep. You’ll be handling pull requests, writing clean commits, and jumping on quick Teams or Slack calls whenever a change needs clarification. Expect a straightforward workflow—branch, code, PR, r...

    €551 Average bid
    €551 Průměr. nabídka
    66 nabídky
    Trophy icon Web Carpark Management App
    4 dní left

    I need a browser-based system that lets me run every aspect of our carpark from any Windows PC without installing extra software. The core of the build is flexible customer handling: I must be able to set up and manage short-term, long-term and annual accounts with independent pricing, expiry rules and access limits. For customers who park “on account”, the system has to trigger an automatic email on the 20th of each month containing their balance and payment link, so scheduling and SMTP integration are essential. A live dashboard should surface the three key metrics I use to steer the business—revenue, customer-usage statistics and occupancy rates—with the option to export each report to CSV or PDF. Drilling down into any figure should reveal the underlying tra...

    €50 Average bid
    Zaručené
    €50
    45 příspěvky
    WinLicense Themida 3.x Unpacking
    3 dní left
    Ověřený

    I have a C# application that is now locked behind WinLicense + Themida 3.x. My only goal is to regain access to the project so I can open it in Visual Studio and continue working on it. I do not need a ready-to-run executable; what I’m after is clean, compilable source code. Once unpacked, I want to see: • the full user-interface layout and resources, • the core functionality and algorithms, and • all data-processing and storage routines. A straightforward Visual Studio solution (.sln, .csproj, assets, references) with clear build instructions will be considered a complete delivery. If any sections remain obfuscated, please document the reasons and suggest next steps.

    €377 Average bid
    €377 Průměr. nabídka
    43 nabídky

    I need assistance installing Visual Studio 2022 on Windows 11 and creating an MSI installer for it. I am a Visual Basic developer, but have hit a problem creating an installer and would like some assistance/guidance. I recently updated the application to use Nuget packages and Net 8.0 and am struggling getting the dlls to install correctly. The VS installation creator is picking up the wrong sql server and system dlls. The application includes two extensions, Component One and DevExpress I suspect the problem might be because the extensions are using different versions of the system and sql server dlls. Is this something you can help with please? Requirements: - Create an MSI installer for the setup of a desktop application Ideal Skills: - Experience with Visual Studio 2022 and Ne...

    €29 / hr Average bid
    €29 / hr Průměr. nabídka
    71 nabídky

    I run a project with a large-scale, custom integration to SAP S/4 HANA and now need an expert who knows the Sales and Distribution area inside out. The technical landscape already includes an extensive C# service layer that exchanges data with S/4, so the ideal partner is comfortable discussing both functional SD scenarios and how they translate into .NET code and APIs. Your main focus will be to examine my current SD setup, identify any gaps or mis-alignments with best practice, and guide me through the right configuration or enhancements. Whether the issue lies in pricing, order processing, delivery scheduling, or billing flows, I want pragmatic recommendations I can apply immediately and, when needed, hands-on help inside the system. Experience with the relevant SAP tools—SPRO,...

    €171 Average bid
    €171 Průměr. nabídka
    18 nabídky
    VB.NET Shift Timing Update -- 2
    3 dní left
    Ověřený

    My donation-counter application (VB.NET, ASP.NET, SQL Server) currently treats the day as four 6-hour shifts. I need the underlying logic switched to three 8-hour shifts—nothing else about the feature set is changing and the screens can stay exactly as they are. Core work • Rework the scheduling code so every function that references shift boundaries now recognises 00:00-07:59, 08:00-15:59 and 16:00-23:59 (or equivalent server-time logic). • Update the existing SQL reports and any stored procedures that aggregate by shift so their totals align with the new 8-hour blocks. Acceptance I’ll verify by running a full day’s test data: the counters must roll over at the new cut-off times and all daily/shift reports must balance against those timestamps. This ...

    €71 Average bid
    €71 Průměr. nabídka
    20 nabídky
    Shift Logic Conversion in VB.NET
    2 dní left
    Ověřený

    I have an in-house VB.NET application backed by SQL Server 2008 R2 that currently schedules four 6-hour shifts per day. Operational changes now require three 8-hour shifts instead. The change touches two main areas: • Business logic – all routines that build the daily roster, assign staff and calculate shift boundaries work off the 4 × 6 model. • Database structure – several tables store fixed shift identifiers, start / end times, and downstream references that assume four records per day. Because the scheduling and allocation algorithms drive time-sensitive workflows, any adjustment must keep existing calculation accuracy intact. The user interface itself can stay as is; only back-end logic and schema need attention. What I need delivered 1. Updated ...

    €9 Average bid
    €9 Průměr. nabídka
    12 nabídky

    I’m moving our freight-invoice workflow off a Windows-only desktop utility and into a fully SQL Server–driven pipeline. All business rules live in clear documentation, every data source has been mapped, and I have a year’s worth of validated invoices to prove the expected outputs. Here is the flow I need implemented: CSV files arrive from carriers, they are ingested into staging tables, T-SQL stored procedures match each line to the appropriate rate-card logic, the correct freight charges are calculated, and the results are surfaced through an API. The API’s main purpose is to let our client application migrate data and trigger the stored-procedure processing as needed. To keep us aligned, these are the concrete deliverables: • Schema for raw, staging, and ...

    €27 / hr Average bid
    €27 / hr Průměr. nabídka
    65 nabídky

    Dear Partners, I am currently seeking a fully functional, production-ready white-label neo-banking SaaS platform that can be rapidly deployed and customized with our branding (logo, colors, visual identity). Our objective is to significantly accelerate time-to-market by integrating an existing, mature solution rather than engaging in a long and resource-intensive development cycle. The ideal solution should: Be fully operational and already deployed in live environments Support complete white-label customization Be easily integrable with third-party banking APIs and financial partners Meet high security and compliance standards, particularly PCI DSS compliance Demonstrate strong governance, regulatory awareness, and fintech best practices Offer scalability and long-term technical ...

    €1085 Average bid
    €1085 Průměr. nabídka
    136 nabídky

    We are looking for an experienced Senior .NET Engineer to join our engineering team and help build high-performance data processing solutions. In this role, you will design and develop scalable backend systems, solve complex engineering challenges, and contribute to architecture decisions. You will work closely with product managers, data analysts, and engineers to deliver reliable, efficient, and secure systems. This position focuses on .NET development using C# in a modern microservices architecture. Important: Applicants must already be legally authorized to work in the United States. Visa sponsorship or immigration support is not available for this role. Responsibilities Technical Development Design, build, and maintain scalable microservices using .NET and C#. Develop and optimi...

    €19 / hr Average bid
    €19 / hr Průměr. nabídka
    206 nabídky
    Secure Windows LMS Desktop App
    2 dní left
    Ověřený

    I need a Windows-only desktop application tied to a web-based LMS portal. The core of the job is to let learners access course content on a single, registered machine and to keep that content safe from capture. Key points • Single-device login: once a user signs in with their username and password, the licence is bound to that computer. Any attempt to log in elsewhere must be blocked automatically. • Screen-capture defence: the moment a screen-recording or screenshot tool is detected, the learning window should turn blank until the activity stops. • Course management tools are required inside the LMS so I can upload, organise and retire modules, monitor enrolments and push updates to the desktop client seamlessly. Deliverables 1. Windows desktop client (installer + sou...

    €1160 Average bid
    €1160 Průměr. nabídka
    18 nabídky
    Programador .NET Web Empresarial
    2 dní left
    Ověřený

    Necesitamos un programador .NET que pueda trabajar en la zona de Barcelona para colaborar en el desarrollo de una aplicación web orientada a empresa. Objetivo Colaborar en el desarrollo de una aplicación web empresarial centrada en la gestión administrativa. El proyecto debe cubrir los procesos internos habituales: formularios de datos, permisos, diferentes estados de expedientes, generación de reportes y paneles de control. Alcance del trabajo • Back-end en .NET (preferiblemente .NET 6 o superior) con arquitectura limpia y API REST. • Front-end con Razor Pages, Blazor o similar, manteniendo un diseño responsive. • Gestión de datos en Microsoft SQL Server. • Entorno de desarrollo Microsoft Visual Studio. &b...

    €18 - €36 / hr
    Místní Zapečetěný
    €18 - €36 / hr
    30 nabídky

    I am looking for an ASP.NET developer to continue and finish my current website. I also need a, LMS (learning dashboard) where users can log in and access their courses...etc Only experienced developers please and more details will be shared in private. Technical Requirements Strong experience in ASP.NET / .NET Core Ability to work with custom-built platforms (not WordPress) Experience building LMS / dashboards / membership systems Experience integrating Stripe / PayPal...etc Experience building a blogs. Ability to set up a shop Project Management Requirements Must be available for ongoing support (not only one-time job) Must provide clean documentation so i can modify basic texts. Clear communication in English Ab...

    €418 Average bid
    €418 Průměr. nabídka
    207 nabídky
    Four-Shift VB.NET System Upgrade
    2 dní left
    Ověřený

    I need my existing VB.NET application (currently locked to a three-shift pattern) adapted to run four distinct shifts per day while keeping everything our staff already know intact. What must stay the same • The original shift times and their duration logic • All employee assignment and roster rules • The look, layout and structure of our current reports What must now be flexible • Shift schedules: start and end times should be editable from the UI • Report parameters: date range, department, and any other filters must be user-selectable Reports required • Daily Shift Summary • Shift Attendance Scope of work • Refactor VB.NET code, UI and business rules to recognise a fourth shift without breaking historical data • ...

    €49 Average bid
    €49 Průměr. nabídka
    8 nabídky

    I’ve just purchased a new Windows computer and need all my existing content moved across—roughly 200 GB made up of standard documents, office files, and a collection of photos and videos. Both machines run Windows, so the job is a like-for-like transfer with no OS conversion headaches. What I need from you: • Prepare the new PC so it is ready for everyday use (user account, basic preferences, folder structure, network connection). • Copy every file exactly as it sits on the old machine, keeping the same hierarchy so I can find everything instantly. • Verify that all 200 GB arrives intact—no corrupt images, no missing Word docs—before wrapping up. No additional software installation is required; I’m handling Office and any specialty apps later....

    €129 Average bid
    €129 Průměr. nabídka
    49 nabídky

    I need an expert to improve our SharePoint system. The goal is to centralize document storage, create client pages, and set up our entire intranet. Requirements: - Comprehensive SharePoint setup - Migration of existing documents - User-friendly client pages - Integration to eliminate other software systems Ideal skills: - Extensive SharePoint experience - Strong project management - Excellent organizational skills Please include past work, relevant experience, and a detailed project proposal. I need this done ASAP.

    €22 / hr Average bid
    €22 / hr Průměr. nabídka
    70 nabídky

    I’m overhauling a growing startup’s ASP.NET Core codebase and I need another set of expert hands. The immediate focus is to simplify and clean up the API layer, with special attention to the database-interaction code. We are on SQL Server, hosted in Azure, and wired into Azure DevOps for CI/CD, so solid experience across that stack is essential. Beyond the back-end work, you should feel comfortable dipping into the HTML and lightweight UI touches that surface in our Razor pages. The first milestone is to rebuild the authentication portion of the API; once that is stable we will iterate through the remaining endpoints. To make sure we are a good fit, I’ll start you on a contained trial task. Let me know: • Your hourly rate • The number of hours you can commi...

    €91 Average bid
    €91 Průměr. nabídka
    74 nabídky
    Remote M-Files API Integration
    5 hodiny left
    Ověřený

    I’m looking for an experienced M-Files developer based in India to join us remotely for an initial 3–6 month engagement, with the option to extend if the collaboration goes well. Primary objective • Build and refine API integrations that connect M-Files to our CRM platform. (We already handle basic workflows and configuration in-house; your main mission is clean, reliable data exchange between the two systems.) Day-to-day expectations • Analyse our current M-Files vault structure and CRM data model. • Design the integration flow, mapping objects and metadata appropriately. • Develop .NET/C# code that leverages the M-Files API and the CRM’s REST/SDK endpoints. • Implement secure authentication and robust error handling. • Docum...

    €406 Average bid
    €406 Průměr. nabídka
    103 nabídky

    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]'

    €1054 Average bid
    €1054 Průměr. nabídka
    26 nabídky

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