LINQ Experts in Germany
for cleaner data access, matched in minutes with vetted and available freelancersHire experts who design expressive queries across relational data, collections and APIs, while connecting LINQ with C#, Entity Framework Core and SQL Server. FRATCH finds the right vetted, available freelancer through fast, precise AI matching.
Meet FRATCH Experts in Germany, who have recently used LINQ
Oleg O.
Last position:
Senior Software Developer / BI Integration Developer Power BI, C# at Telecommunications
Embedded Analytics & AI-assisted BI
Design and development of an integrated analytics solution based on ASP.NET Core, Power BI Embedded, and LLM services to provide context-based business information.
Development of an AI agent with Function/Tool Calling for the secure orchestration of REST APIs, SQL data sources, and technical services within defined business processes.
Building automated BI workflows including workspace management, deployment processes, and scheduled refresh via the Power BI REST API.
Implementation of secure service-to-service communication with Microsoft Entra ID and Service Principal, and integration into existing enterprise system landscapes.
Technologies: ASP.NET Core, C#/.NET, Power BI Embedded, Power BI REST API, LLM API, AI Agents, Function/Tool Calling, Entra ID
Tommy H.
Last position:
UX Design Lead / Senior Product Designer at ZEISS Vision Care
Product and interaction design for consultation software and digital commerce. For MyoConsult / EWO: patient onboarding, first visits, overviews, consent and follow-ups, device integration and information architecture connecting consultation workflows. Experience maps, workflow concepts and test prototypes supported revisions.
For Vision Shop / OCS Marketplace: connected frame and lens selection, prescription entry, provider selection, basket and checkout journeys.
Johannes W.
Last position:
Senior Software Engineer at EnBW
The Agent Support Interface is an internally used software application deployed by all 1st- and 2nd-level customer advisors. It displays information about customers and their cases in a centralized and compact format.
The system provides links to other platforms and systems to improve the agent's workflow.
All challenges were handled independently and as a team in an agile SCRUM team.
Consulting in the areas of software architecture, DevOps strategies, and agile development processes.
Supporting the team in decision-making and introducing best practices for test automation and code reviews.
Technologies: Microsoft .NET, Microsoft Azure, C#, MVC, CQRS, Akka.Net, Angular 18, NGXS, Typescript, Cypress/Playwright, Wiremock, CI/CD, DevOps.
Martin H.
Last position:
Software Architect at Hays AG
- C# development .Net 8.0
- Technical responsibility for architecture decisions (DDD, Clean Architecture, Microservices)
- Introduction and systematic evaluation of GitHub Copilot, analysis of efficiency benefits, identification of suitable application scenarios, assessment of code quality
- Development of best practices for using Copilot within the team, support during rollout and coaching of individual developers
- Conducting code reviews, architecture documentation according to Arc42
- Building stable CI/CD pipelines with Azure DevOps, introduction of automated quality assurance with SonarQube and .editorconfig
- Collaboration with stakeholders to continuously optimize technical concepts
- Technologies used: Azure Devops Server, Git, Sonarqube, Visual Studio 2022, Sparx EA 17, Nagios LS, Nagios XI, C#, Resharper 2.24.3, Clean Architecture, DDD, EF-Core, Arc24, Microservices, Angular, MediatR, SignalR, Copilot, OpenAI
Stefan W.
Last position:
Architect/Software Developer at Global Logistics Support GmbH
Tasks
- Further development of a new ERP system with Blazor
- Generation of e-invoices in the XRechnung and Zugferd formats
- UI/UX design Client-server system
- Windows 11 Technology
- Microsoft .NET 9, Git, Azure DevOps, ASP.NET, MSSQL, Blazor Programming languages
- C#, MVVM Development tools
- Microsoft Visual Studio .NET 2022 Database
- MSSQL Industry
- Other
Thorsten L.
Last position:
Senior Security Analyst
- Analysis and remediation of security vulnerabilities in a risk assessment system for energy trading
- System analysis
- Threat modeling
- Decision-making on vulnerability mitigation strategies
- Implementation of vulnerability detection mechanisms
- Security scans
- DevSecOps practices
- Technical environment: Visual Studio Code, JetBrains Suite, MS Threat Modeling Tool, DevSecOps, Git, AWS, DynamoDB, SQL Server, Endur, Snowflake, Orca
- Languages: C#, JavaScript, TypeScript, Python, PowerShell, Bash, Terraform, SQL
Rizwan B.
Last position:
Software Developer/Database/Devops at Sutor Bank
Project:
- Migration of existing VB6 applications to C# (Web API, web app)
- Report development and risk management systems (C#, API interfaces, databases)
- Document archive (API interfaces, databases)
Team size: 9 people
- Reports for Risk and Credit Management Development and maintenance of report structures to support risk and credit decisions, including data modeling, validation, and automated delivery for business departments.
- Migration and maintenance of a legacy system to the latest version of .NET for the asset management system Planning and execution of the modernization of an existing asset management system, including code refactoring, performance optimization, test automation, and sustainable maintenance after migration.
- Replacement of the COM-based archive connection with a REST API Redevelopment of the connection of the document archive (HYPARCHIV) to a REST API based on OpenAPI/Swagger, including archiving with index and stamp fields as well as PDF export into the customer portal.
- Redesign of payment receipt processing Replacement of an existing Oracle PL/SQL process with a new implementation in C# based on a business concept, including business alignment, data modeling, and test coverage.
- Design and implementation of tests, creation of deployment pipelines, and documentation
- Further development and implementation of change requests.
- Regular code reviews within the team as well as optimization of application scalability and stability
Technologies: C#, .NET 10, ASP.NET, Unit of Work, IoC, Three-Tier Architecture, Entity Framework Core, DB First, Web API, Swagger, OpenAPI, Python, Oracle, HYPARCHIV, Azure, PowerBI, DevOps, AKS (Azure Kubernetes Service), GIT, xUnit, NSubstitute, TypeScript, Vue.js, Pinia,
Methods: agile development using Scrum
Andreas G.
Last position:
Senior Fullstack .NET (Core) & Angular Developer at IT Service Provider
- Supporting several agile teams in the new product development of an enterprise CRM and ERP application
- Web frontend development with Angular 17–21 (microfrontends, Domain-Driven Design, MDB-Bootstrap)
- Backend development with C# and .NET 7–10, MongoDB, MassTransit, RabbitMQ, Entity Framework Core, ElasticSearch (microservices, DDD)
- Technical feature design for assigned tasks
- Technical architecture design including forward-looking planning of AI-supported extension options
- Proof-of-concept implementation of AI-supported workflows with n8n and a locally hosted LLM (Ollama)
- Coordination with stakeholders and Product Owners, support with sprint planning
Result: Delivery of production-ready microservices and frontend modules in agile sprint cycles.
Environment: .NET 7–10 · Angular 17–21 · C# · TypeScript · OpenAPI · Microfrontends · DDD · Kubernetes · Docker · Helm · MS SQL Server · PostgreSQL · MongoDB · MassTransit · RabbitMQ · EF Core · ElasticSearch · Kibana · Azure DevOps · KeyCloak · n8n · Ollama
Andreas S.
Last position:
Mobile and Web Portal Full-Stack Development (Freelance)
- Maintained and further developed a web portal and mobile app as a full-stack developer.
- Handled customer requests and fixed bugs.
- Implemented REST APIs and database access using Java Spring.
- Maintained and expanded a web frontend with AngularJS.
- Maintained and expanded an iOS and Android mobile app with Qt/C++/Qml, including updating the app in the respective stores.
- Technologies: Qt/C++/QML, AngularJS, Java Spring, MongoDB, OAuth.
Johannes K.
Last position:
Software Developer at Hoffmann Engineering Services GmbH
- Software development
- Technical design of software architecture and design (considering functional and non-functional requirements)
- Frontend and Backend
- Refactorings
- Code reviews
- Unit tests
- Automated integration tests
- E2E tests
Global Identity Services (GIS) is the identity provider for the Digital Services Platform (DSP). GIS is responsible for authenticating and authorizing end users and other DSP services by issuing security tokens. This includes:
- Identity management (e.g., user registration, password reset and change, user profiles)
- Management of roles and permissions
- Single Sign-On (SSO) across DSP services
- Management of OAuth resources and terms and conditions
Ulrich P.
Last position:
Software Architect at Carl Zeiss SMT
- Development of a modular application framework as the future foundation and for consolidating more than 500 in-house applications.
- Role: Software Architect.
- Process: Scrum, 9-person team, clean code principles.
- Technologies: Visual Studio 2022, Git, C# 12, .NET 8.0, WPF, MVVM, xUnit, WIX-Toolset 4, Visual Studio Templating, Enterprise Architect, REST services, SignalR, SAP, Oracle DB, OAuth 2.0, OpenId.
Vincent R.
Last position:
Freelancer at VINROTLAB.IO
- Consulting and creation of various web applications based on SharePoint and the React framework for different clients
- Development and testing of accessible apps for SharePoint
- Creation of various test cases for test automation
- Development of various solutions based on Azure
- Creation of various web services based on .NET
- Development of various SharePoint Framework solutions
- Development of various UI solutions based on SharePoint
- Consulting and creation of various Power Apps applications and Power Automate for the steel industry and an IT consulting company
- Support, consulting, and development with offshore teams for SharePoint 2013, 2016, and microservices for a logistics company
- Consulting, concept design, and development of microservices and web applications based on Microsoft technology and the React framework for a logistics company
- Consulting, concept design, and development of various SharePoint Framework solutions on SharePoint 2016 for logistics
- Consulting for the migration from SharePoint 2010 to 2016 for an IT consulting company
Moritz F.
Last position:
AWS Developer/DevOps Engineer (Energy Trading) at RWE Supply & Trading GmbH
- Further development and partial new development of a distributed cloud application for providing data in energy trading
- Independent implementation of the infrastructure (IaC)
- Creation of automated CI/CD pipelines, containers, REST APIs, and Lambdas
- Continuous cost and performance optimization
- Collaboration in an international Scrum team and with experts in energy trading
- Technologies: C#/ASP.NET Core; EF Core; PostgreSQL; Terraform/AWS CloudFormation; HTTP; REST/Web API; Swagger/OpenAPI; Azure DevOps; Rider; VS Code; git; Docker; AWS (S3, EC2, Fargate, Lambda, Step Functions, Secrets Manager, VPCs, ALB/NLB, RDS, Cloudwatch, AWS CLI, Amazon MQ); Redis; OAuth; OpenID Connect
- Languages: C#; TypeScript; HCL; Docker; Bash; PowerShell; YML; JSON
Gabriele C.
Last position:
Startup Mentor and Technical Advisor (Volunteer) at Faros Accelerator
- Mentoring startups about technology trends and solutions, business models, market and competition research.
Gavrilo O.
Last position:
Head of Software Development at Davidsmeyer & Paul GmbH
- Strategic project development, realisation, and implementation with internal and/or external development team
- Multi stakeholder management
- Planning new projects, cost calculation, risk calculation
- AI project for the electrical components production
- Building management systems integrations (BACnet, Modbus, etc)
- Inhouse BACring system architecture and development (control system for fire protection and smoke extraction systems)
- Inhouse MES system architecture and development
- Project management
- Agile-SCRUM project development
- Solution architecture and processes analytics (UML)
- Business application development
- Jira project management
- Reporting and documentation
- Recruitment process for the IT staff
- Software architecture, project development, costs, risks
- Education IT staff (internal and external)
- Responsibility for 5 development/DevOps/QA teams
Discover over 15,000 top freelancers
Statistics of experts using LINQ
Aggregated from the professional profiles of matched freelancers.
Experience
26 years
Position duration
2.9 years
Positions per freelancer
19
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Manufacturing, Transportation
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
77%
Master's degree or higher
55%
Doctorate
3%
Certifications per freelancer
4
Most common languages
German, English, French
Speak two or more languages
100%
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Germany are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Germany using LINQ
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
LINQ experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (97%)
- Manufacturing (73%)
- Transportation (62%)
- Healthcare (57%)
- Banking and Finance (54%)
- Automotive (51%)
- Professional Services (46%)
- Education (41%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What LINQ does
LINQ, or Language Integrated Query, is a query syntax and set of APIs in the .NET ecosystem. It lets professionals filter, sort, group and project data with a consistent approach across in-memory collections, relational databases, XML and other sources. Query expressions can stay close to business language while remaining part of strongly typed C# code.
Core capabilities
LINQ supports both query syntax and fluent method chains built around extension methods. Specialists work with deferred execution, lambda expressions, anonymous types, joins, aggregations and projections. They also understand when queries run in memory and when a provider translates them into another language such as SQL.
- Shape data into purpose-built view models and API responses
- Filter and aggregate collections with readable, composable expressions
- Join related records across entities and data sources
- Diagnose deferred execution, multiple enumeration and inefficient queries
.NET ecosystem
LINQ is closely tied to C#, .NET collections and Entity Framework Core. Its providers can translate supported expressions into database queries, while libraries such as MoreLINQ extend common operations. Strong professionals also work with SQL Server or other relational databases, asynchronous data access, nullable reference types and unit testing.
Where companies use it
Teams use LINQ in business applications, APIs, reporting services, integration layers and data-heavy desktop software. It appears in systems for manufacturing, finance, logistics, healthcare and public services, including applications maintained by companies in Germany. The right approach depends on data volume, provider support and the boundary between database and application code.
When freelance expertise helps
Companies often bring in a specialist when queries become difficult to review, database performance changes after a refactor or an application is moving to Entity Framework Core. A professional can improve query translation, simplify repository code, review data-access patterns and create tests around edge cases. Remote collaboration works well when query plans, schemas and reproducible examples are documented; on-site work can help with workshops and wider modernization efforts.
- Review slow or overcomplicated LINQ queries
- Refactor legacy LINQ to SQL or Entity Framework code
- Move filtering and aggregation to the correct execution layer
- Establish conventions for readable, testable data access
What strong professionals bring
A capable LINQ expert does more than produce concise expressions. They verify generated SQL, understand indexes and query plans, recognize provider-specific limits and protect results from accidental client-side evaluation. They explain trade-offs between readability, memory use and database cost, and can communicate clearly with product, data and software teams in German or English when working in Germany.
Frequently asked questions
The facts hiring teams ask for most often when it comes to LINQ.
LINQ is used to query and transform collections, database records, XML and other structured data from .NET applications. Companies use it for filtering, joins, grouping, projections and report or API preparation without switching between unrelated query styles.
LINQ keeps queries inside strongly typed C# and works naturally with application models. Direct SQL can provide finer control and database-specific features, so the choice depends on performance needs, provider translation, query complexity and the value of compile-time checks.
A strong LINQ specialist usually brings C#, .NET, Entity Framework Core and relational database knowledge. Experience with SQL Server, indexing, query plans, asynchronous programming, API design and automated testing is also valuable.
The required depth depends on the work. A simple collection query may need general C# knowledge, while performance tuning, provider translation or a legacy LINQ to SQL migration calls for a professional who can inspect generated SQL and database behavior.
LINQ works with in-memory collections such as arrays, lists and dictionaries, as well as database providers, XML and custom queryable sources. The available operations and execution behavior vary by provider, so specialists check what is translated and what runs locally.
LINQ projects are often well suited to remote collaboration because queries, schemas, tests and execution plans can be reviewed digitally. On-site sessions may still help with architecture workshops or legacy system discovery, while German or English communication should match the company team.
Ask how the professional separates query composition from execution and how they verify the generated SQL. A good LINQ specialist can explain deferred execution, avoid unintended client-side evaluation and show how tests and query plans support the proposed change.
LINQ may be a poor fit when a query relies heavily on vendor-specific SQL features, complex database tuning or operations a provider cannot translate reliably. In those cases, a professional may recommend targeted SQL, a stored procedure or a clear split between database work and in-memory processing.
The average hourly rate of freelancers in Germany who have used LINQ in their recent projects is 95 €, which corresponds to a daily rate of about 757 € based on an 8-hour working day.
Of the freelancers in Germany who have used LINQ in their recent projects, 77% hold at least a Bachelor's degree, 55% hold at least a Master's degree, and 3% hold a doctorate.
On average, freelancers in Germany who have used LINQ in their recent projects have 26 years of professional experience, with a single engagement typically lasting around 2.9 years.
The most common languages among freelancers in Germany who have used LINQ in their recent projects are German (100%), English (97%), and French (19%).
The most common industries among freelancers in Germany who have used LINQ in their recent projects are Information Technology (97%), Manufacturing (73%), and Transportation (62%).
The most common business areas among freelancers in Germany who have used LINQ in their recent projects are Information Technology (97%), Product Development (97%), and Project Management (68%).
Main locations of FRATCH Experts, who have recently used LINQ
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg 
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