Freelance C# jobs

131 live freelance, contract and interim C# roles, collected daily from recruitment-agency desks around the world — the postings that rarely make it to the big job boards.

131 live131 freelance16 remote
Dynamics 365 Technical Consultant
Freelancehybrid🇵🇱 Poland📍 Krakow, Poland⏱ 12 months + extensionDynamics 365C#JavaScript.NET
QA Engineer QA Automation Test Engineer
Freelancehybrid🇬🇧 United Kingdom📍 Glasgow⏱ 1 yearC#.NETWindows ServicesWPF
Application Security Engineer Software Financial Services Greater London
Freelancehybrid🇬🇧 United Kingdom📍 Greater LondonPythonJavaScriptC#PowerShell
Senior Quality Assurance Engineer
Freelancehybrid🇳🇱 Netherlands📍 Den Haag⏱ 12 monthsC#.NETPlaywrightGherkin
Developer Regie op Berichten
Freelancehybrid🇳🇱 Netherlands📍 Utrecht⏱ 12 months + extensionC#.NETAzureAzure Service Bus
Senior Full Stack Angular Net Developer Detavast
Freelanceonsite🇳🇱 Netherlands📍 Amsterdam⏱ 6 months + extensionAngularTypeScriptC#.NET
net/C Developer
Freelancehybrid🇺🇸 United States📍 Austin, TXC#.NET.NET CoreAngular
Quality Assurance Engineer (Integraties) – COAInterim job
Freelancehybrid🇳🇱 Netherlands📍 Den Haag⏱ 12 monthsC#.NETPlaywrightAzure DevOps
Senior Backend Net Developer Utrecht Overheid
Freelancehybrid🇳🇱 Netherlands📍 Utrecht⏱ 6+ months + extensionC#.NETREST APISQL Server
Team Lead Développeur .NET
Freelanceonsite🇱🇺 Luxembourg📍 Luxembourg, Luxembourg⏱ 4-6 monthsC#JavaScriptTypeScriptGit
NET Developer
Freelancehybrid🇵🇱 Poland📍 Warsaw, Poland⏱ 12 months + extensionC#.NET Framework 4.xSQL ServerT-SQL
Expert en Ingénierie de Données Snowflake
Freelancehybrid🇫🇷 France📍 Paris, France⏱ 3 yearsSnowflakePythonDBTAirflow
VAGA EXTERNAGame Developer (USD-based pay)Micro1Remoto
Freelanceremote🇧🇷 BrazilC#C++UnityGodot
Senior Net Developer Noord Holland
Freelancehybrid🇳🇱 Netherlands📍 Noord-Holland⏱ 12+ monthsC#.NETMicrosoft AzureWeb API
Senior sitecore developer - 100 %
Freelancehybrid🇫🇷 France📍 France⏱ 12 months + extension.NETASP.NET MVCC#jQuery
Fullstack Developer (.NET & Angular)
Freelancehybrid🇵🇱 Poland📍 Warsaw, Poland⏱ >12 months.NETAngularC#ASP.NET
Tester Automatyczny
Freelancehybrid🇵🇱 Poland📍 Warsaw, Poland⏱ 12 months + extensionC#TypeScriptSeleniumJava
Senior systemutvecklare – Fullstack med fokus på frontend
Freelance🇸🇪 SwedenReactC#.NETASP.NET Core
Teknisk kravanalytiker – digitala kundmöten
Freelance🇸🇪 SwedenReactREST APIsOptimizelyContentful
Senior Net Developer Noord Holland
Freelancehybrid🇳🇱 Netherlands📍 Noord-Holland⏱ 12+ monthsC#.NET Core.NET FrameworkEntity Framework
Développeur .NET
Freelancehybrid🇫🇷 France📍 Paris, France⏱ > 12 monthsC#.NETASP.NET CoreAWS
Software Engineer
Freelanceremote🇵🇹 Portugal📍 Portugal⏱ > 12 monthsC#.NETReactTypeScript
Senior .NET Developer
Freelancehybrid🇵🇱 Poland📍 Warsaw, Poland⏱ > 12 months.NET 10C#ASP.NETAngular
Developpeur Fullstack Sur Paris
Freelanceonsite🇫🇷 France📍 ParisAngularTypeScriptC#.NET
Développeur .NET WPF confirmé sur Grenoble
Freelancehybrid🇫🇷 France📍 Grenoble⏱ 6 months + extension.NETC#Windows Communication Foundation (WCF)Windows Presentation Foundation (WPF)
Senior Software Development Engineer in Test - C#
Freelanceonsite🇺🇸 United States📍 Dallas, TexasC#.NETSeleniumAppium
Softwaretester Koeln
Freelancehybrid🇩🇪 Germany📍 CologneSAPJavaC++C#
Data engineer
Freelanceonsite🇳🇱 Netherlands📍 RotterdamSQLMicrosoft FabricOneLakePower BI
Backend Developer (C# / .NET 8.0) - Banking
Freelancehybrid🇵🇱 Poland📍 Lodz, Poland⏱ 12 months +C#.NET 8.0MS SQLEntity Framework
DevOps Engineer
Freelanceonsite🇬🇧 United Kingdom📍 GlasgowAWSC#.NETDevOps
C Net Software Engineer Etrading Greater London
Freelanceonsite🇬🇧 United Kingdom📍 Greater LondonC#.NETAzureBicep
Software Developer Senior Southlake
Freelancehybrid🇺🇸 United States📍 Southlake, TX⏱ 6 months.NETC#SQL ServerREST API
Developpeur C Net Sur Paris
Freelanceonsite🇫🇷 France📍 Paris⏱ 3 months + extensionC#.NET Framework 4.8Windows ServicesSQL Server
AI Engineer
Freelanceonsite🇺🇸 United States📍 Ann Arbor, MIPythonJavaC#TypeScript
Anwendungsentwickler C#/.NET (Blazor)
Freelancehybrid🇩🇪 Germany📍 Munich, Germany⏱ 24 monthsC#.NETBlazorPowerShell
Developpeur Power Apps Sur Paris 15
Freelanceonsite🇫🇷 France📍 Paris 15⏱ long-termPower AppsDynamics 365.NETC#
DevOps Engineer
Freelancehybrid🇺🇸 United States📍 Westlake, TXGrafanaDatadogLinuxWindows Server
Senior .NET Engineer - SmartGrants
Freelanceremote🇵🇱 Poland📍 Poland⏱ > 12 monthsC#.NETASP.NET CoreAzure
Software Developer Engineer Test
Freelanceonsite🇺🇸 United States📍 Ann Arbor, MIPythonJavaJavaScriptTypeScript
AI Software Engineer Ann Arbor
Freelancehybrid🇺🇸 United States📍 Ann Arbor, MI⏱ 6 months + extensionPythonJavaC#TypeScript
AI Software Test Engineer Ann Arbor
Freelancehybrid🇺🇸 United States📍 Ann Arbor, MI⏱ 18 monthsPythonJavaJavaScriptTypeScript
Testautomatisierer / Software Tester
Freelancehybrid🇩🇪 Germany📍 Heimertingen, Germany⏱ 12 months + extensionC#SeleniumCypressDocker
Test Engineer
Freelancehybrid🇩🇪 Germany📍 Gilching, Germany⏱ 12 months + extensionAppiumC#REST APIsAndroid Auto
DevOps Engineer
Freelancehybrid🇬🇧 United Kingdom📍 Glasgow or Northampton⏱ 12 monthsAWSC#.NETCI/CD
Test Automation
Freelancehybrid🇬🇧 United Kingdom📍 Glasgow or Northampton⏱ 12 monthsC#.NETWPFWindows Services
Ingenieur Developpement Cybersecurite
Freelancehybrid🇫🇷 France📍 Grenoble⏱ 3 months + extensionPythonC#PKIMicroservices
Developpeur Ms Dynamics 365 Power Platform
Freelancehybrid🇫🇷 France📍 Les Mureaux⏱ 3 months + extensionDynamics 365Power PlatformPower PagesPower Automate
Konsulentoppdrag · Utvikler med fokus på sikkerhet, Oslo
Freelanceonsite🇳🇴 Norway📍 Norway⏱ 12 months + extension.NETC#AzureOAuth
Medior stecore developer
Freelancehybrid🇫🇷 France📍 Paris⏱ 24 months + extension.NET.NET COREASP.NETASP.NET Core
Senior power platform developer
Freelancehybrid🇧🇪 Belgium📍 Bruxelles⏱ 24 months + extension Microsoft Copilot StudioC#DataversePower Apps
Développeur(se) Fullstack C# / Angular
Freelancehybrid🇫🇷 France📍 Paris⏱ 1 year + extensionAngularC#
Développeur VBA/.Net et Analyste Fonctionnel RPA - Finance
Freelancehybrid🇫🇷 France📍 Paris⏱ 1 year + extension.NETC#Microsoft ExcelRPA (Robotic Process Automation)
Konsulentoppdrag · Senior fullstack-utvikler, Oslo
Freelanceonsite🇳🇴 Norway📍 Norway⏱ 12 monthsC#.NET CoreAngularTypeScript
Trading Engineer Zurich
Freelanceonsite🇨🇭 Switzerland📍 Zurich⏱ 12 monthsPythonPandasExcel VBASQL
Senior Full Stack Engineer
Freelanceremote🇵🇱 Poland📍 Poland⏱ 12+ months + extensionC#.NETOracleSQL
C Dot Net Developer With SQL Brighton Brighton
Freelanceonsite🇬🇧 United Kingdom📍 Brighton⏱ 6 monthsC#.NETSQL ServerPL/SQL
C Dot Net C .Net And SQL Developer City London City London
Freelancehybrid🇬🇧 United Kingdom📍 London⏱ 6 monthsC#.NETSQL ServerASP.NET
Trading Engineer Zurich
Freelanceonsite🇨🇭 Switzerland📍 Zurich⏱ 12 monthsPythonPandasSQLExcel VBA
Consultant expert - Sénior
Freelance🇫🇷 France📍 Paris⏱ 1 year + extension.NETC#
Microsoft Dynamics 365 CE / CRM Developer
Freelanceremote🇵🇱 Poland📍 Poland⏱ 12 months + extensionMicrosoft Dynamics 365 CEC#.NETAzure Function Apps
Développeur C#
Freelancehybrid🇫🇷 France📍 Paris, France⏱ > 12 monthsC#.NET.NET CoreREST API
C Developer
Freelanceremote🇬🇧 United Kingdom📍 England, United Kingdom⏱ 3 monthsC#.NETSQL ServerREST API
RPA & Software Developer (C#/.NET, Azure DevOps, Blue Prism)
Freelancehybrid🇵🇹 Portugal📍 Lisbon, Portugal⏱ > 12 monthsC#.NETAzure DevOpsBlue Prism
Ei C Software Application Engineer Visp
Freelanceonsite🇨🇭 Switzerland📍 Visp⏱ 12 months + extensionC#VBAPowerShellSQL
Ei C Software Application Engineer Les Breuleux
Freelanceonsite🇨🇭 Switzerland📍 Visp⏱ 12 months + extensionC#VBAPowerShellSQL
Développeur FullStack .NET C# Flutter
Freelancehybrid🇫🇷 France📍 Île-de-France⏱ 6 months + extensionAzureCQRSFlutterMicrosoft SQL Server
NET Developer
Freelanceremote🇷🇴 Romania📍 Romania⏱ 10-12 monthsC#.NET.NET CoreEntity Framework
Full Stack Developer
Freelancehybrid🇬🇧 United Kingdom📍 London⏱ 12 monthsAzureC#.NET 10Vue.js
Platform Integration Software Engineer Toronto
Freelancehybrid🇨🇦 Canada📍 TorontoPythonJavaC#.NET
Authorization Principal Consultant
Freelancehybrid🇬🇧 United Kingdom📍 London, United Kingdom⏱ 4-6 monthsC#JavaRBACReBAC
Lead Etrm Systems Developer Houston
Freelanceonsite🇺🇸 United States📍 Houston, TexasRightAngleSQL ServerT-SQLSSIS
Developpeur Se C Experimente E Clermont Ferrand 63
Freelance🇫🇷 France📍 Clermont-FerrandC#.NETHTMLCSS
Consultant Task - Senior T24 Architect – Core Banking (2026.09.23)
Freelancehybrid🇸🇪 Sweden📍 Sweden⏱ 3 monthsTemenos T24Temenos TransactREST APIsMicrosoft Azure
Dynamics 365 and Power Platform Consultants
Freelancehybrid🇵🇹 Portugal📍 Lisbon, Portugal⏱ 6 months + extensionDynamics 365Power PlatformC#.NET
Principal Etrm Systems Developer Houston
Freelanceonsite🇺🇸 United States📍 Houston, TexasRightAngleSQL Server.NETT-SQL
C# Backend Engineer
Freelancehybrid🇬🇧 United Kingdom📍 London, United Kingdom⏱ > 12 monthsC#.NETOAuthOIDC
Développeur .NET Biztalk
Freelancehybrid🇫🇷 France📍 Ivry-sur-Seine, France⏱ > 12 monthsC# .NET Framework 4.8C# .NET CoreBizTalkSQL
Trading Systems Integration Engineer - FIX 4.4 Expert
Freelancehybrid🇵🇱 Poland📍 Poland - WarsawJavaSpring Boot.NETC#
Experienced Backend Developer (.NET / AWS) - Warsaw and Surrounding Areas
Freelancehybrid🇵🇱 Poland📍 Warsaw, Poland⏱ > 12 monthsC#.NET CoreEntity FrameworkAWS
Expert AI
Freelanceonsite🇫🇷 France📍 Puteaux⏱ 36 monthsAzure OpenAIAzure FunctionsAzure AI SearchC#
Developpeur C Net Entity F H
Freelanceonsite🇫🇷 France📍 MontpellierC#.NETWPFEntity Framework Core
Technicien Test Validation Mecatronique F H
Freelanceonsite🇫🇷 France📍 MontpellierC#SolidWorksOffice 365
NET developper
Freelancehybrid🇧🇪 Belgium📍 Bruxelles⏱ 12 months + extension.NET.NET COREAzureC#
Développeur Web Service – Front End et Back End
Freelancehybrid🇫🇷 France📍 Aix-en-Provence⏱ 1 year.NETAngularC#CI/CD
Developpeur C#, .net, AvaloniaUI, Python
Freelancehybrid🇫🇷 France📍 Corbeil-Essonnes⏱ 3 months + extensionC#Python
Senior C# / .Net Developer
Freelanceonsite🇧🇪 Belgium📍 BrusselsC#.NET 6/8+ASP.NET CoreEntity Framework Core
Software Engineer · NET & Angular Full Stack
Freelanceonsite🇦🇪 United Arab Emirates📍 Abu Dhabi.NET 8ASP.NET CoreC#Angular
Senior Software Developer
Freelanceremote🇵🇱 Poland📍 Poland⏱ 3 years + extensionC#.NETReactJavaScript
Application Security Engineer
Freelancehybrid🇵🇹 Portugal📍 Lisbon, Portugal⏱ > 12 monthsJavaSpring BootC#.NET
Senior Testmanager IT/OT für Maschinen- und Anlagenlösungen
Freelancehybrid🇩🇪 Germany📍 Oberkochen, Germany⏱ 24 monthsJiraAzure DevOpsPolarionSiemens TIA Portal
Développeur Full Stack Angular / .NET
Freelancehybrid🇫🇷 France📍 Aix-en-Provence⏱ 3 years + extension.NETAngularC#
Senior Full Stack Engineer C React Native
Freelanceremote🇺🇸 United States📍 LATAM⏱ 6-12 monthsC#React NativeJSONTCP/IP Sockets
Fullstack Fintech Regular
Freelanceremote🇵🇱 Poland📍 WarsawC#.NET CoreAngularJavaScript
Application Security Engineer Cyber London
Freelancehybrid🇬🇧 United Kingdom📍 LondonAzure DevOpsGitHubPythonJavaScript
Senior Data Engineer
Freelanceonsite🇩🇰 Denmark📍 Copenhagen, Denmark⏱ 4-6 months + extensionAzureKafkaEvent HubSQL
D365 Solution Architect
Freelanceonsite🇬🇧 United Kingdom📍 City of LondonD365 CEPower PlatformAzureSQL Server
Software Developer
Freelancehybrid🇩🇪 Germany📍 Jena, Germany⏱ > 12 monthsC#.NETC++MSBuild
Konsultuppdrag – Senior Systemutvecklare .NET / React
Freelancehybrid🇸🇪 Sweden📍 Sweden.NETC#ReactTypeScript
Sr · Dynamics 365 Engineer
Freelanceremote🇧🇪 Belgium📍 Argentina⏱ 6 to 11 monthsDynamics 365Power PlatformAzure DevOpsC#
senior data engineer
Freelancehybrid🇬🇷 Greece📍 AthensMS SQL ServerT-SQLSSIS.NET

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