T-SQL Experts in Dusseldorf
in minutes with vetted, available specialistsHire experts who write clear T-SQL for SQL Server, tune stored procedures and views, and fix reporting queries without breaking production systems. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Dusseldorf, who have recently used T-SQL
Thorsten Lenzen
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
Younes Hadrous
Last position:
Senior Backend Developer at PTA
- Development and maintenance of database-driven applications for managing supplier and food contracts, using Oracle PL/SQL extensively for complex business logic and data processing
- Optimization of PL/SQL procedures, functions, and triggers to ensure the performance and scalability of Oracle database solutions
- Ensuring adherence to best practices in PL/SQL development and implementing standards for code quality and data integrity
- Close collaboration with backend and frontend teams to ensure seamless integration between the Oracle database, C#-based APIs, and Azure cloud services
Olga Methner
Last position:
External IT Consultant BI and DWH at Telefónica Deutschland
- Implement the BI solution and replace the old BI landscape
- Sub-project lead for Sales Bonus Plan: Extend the existing solution and migrate to Azure
- Sub-project lead for Cognos migration: Expand the existing data warehouse based on MS technologies
- Analyze business requirements and create the technical solution
- Expand the relational DWH database
- Develop the ETL processes (SSIS)
- Develop the multidimensional database (OLAP cubes/SSAS)
- Use of MS SQL Server 2016 (SSMS, SSIS, SSAS, SSRS), MS SQL Server PDW, Oracle, Power BI, Delta Lake, Databricks, Synapse
Andreas Grutz
Last position:
Senior Fullstack .NET (Core) & Angular Developer at IT service provider
- Supported an agile team in the development of a new CRM tool
- Web frontend development (Angular 17 with MDB-Bootstrap, microfrontends, DDD)
- Backend development (C# & .NET 7-9, MongoDB, MassTransit, RabbitMQ, Elasticsearch, microservices, DDD)
- Coordination with stakeholders & product owners
- Assisted in sprint planning
Mohamed Abd-El-Hamid
Last position:
Full Stack Data Professional (Freelance) BI Expert Data Engineer BI Strategy at Alpha Calcit GmbH
- Harmonized multi-entity data models
- Unified, governed Power BI reporting
- Implemented Microsoft Fabric, Tableau, Excel, T-SQL, Teradata, R, Python and Qliksense
Ronny Herold
Last position:
Förderbank Deutschland
- Extraction and transformation of relevant data from the SAP system developed for the bank and consolidation into the existing reporting environment
- Integration of the data into the existing BI model (extending the star schema to a galaxy schema) for generating the funding committee report and the business development report
- Ensuring data quality
- Knowledge transfer to department staff (SAP, SQL database, Power Pivot, DAX)
Discover over 15,000 top freelancers
Statistics of experts using T-SQL
Aggregated from the professional profiles of matched freelancers.
Experience
23 years
Position duration
2.2 years (Germany: 3 years)
Positions per freelancer
18 (Germany: 17)
Top business areas
Information Technology, Business Intelligence, Product Development
Top industries
Professional Services, Information Technology, Energy
Certification focus areas
Information Technology, Business Intelligence, Product Development
Bachelor's degree or higher
100% (Germany: 83%)
Master's degree or higher
50% (Germany: 51%)
Certifications per freelancer
6 (Germany: 3)
Most common languages
German, English, Arabic
Speak two or more languages
100% (Germany: 95%)
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Dusseldorf are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Average rates of experts in Dusseldorf using T-SQL
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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
What T-SQL does
T-SQL, or Transact-SQL, is the SQL dialect used with Microsoft SQL Server and related Microsoft data tools. It is used to query data, shape reporting layers, and control how database logic runs inside the server.
Common delivery work
- Write and refine SELECT queries for reporting and analytics
- Build stored procedures, views, and functions
- Support ETL and data cleanup tasks
- Troubleshoot slow queries and locking issues
- Keep business logic close to the data layer
Where it fits
T-SQL appears in internal business systems, finance tools, ERP add-ons, and data services that depend on SQL Server. In Dusseldorf, it often matters in teams that need dependable reporting, clean interfaces to applications, and stable database changes.
Ecosystem around it
Strong specialists know SQL Server, SSMS, execution plans, indexing, query tuning, and basic database design. They often work with Power BI, SSIS, SSRS, Azure SQL, and version control for database scripts.
When to bring in help
Bring in freelance support when a database feels slow, a migration needs careful script work, or a reporting query has become hard to maintain. Companies also call in experts when a team needs help reviewing existing T-SQL before release.
What strong specialists look like
Good T-SQL specialists write code that is clear, safe, and easy to support. They think about performance, indexing, transaction behavior, and edge cases, and they explain trade-offs in plain language.
Frequently asked questions
The facts hiring teams ask for most often when it comes to T-SQL.
T-SQL is used to query data, automate database logic, and support reporting inside Microsoft SQL Server environments. Companies rely on it for stored procedures, views, data fixes, and performance-sensitive queries that sit close to the data.
T-SQL adds Microsoft-specific features on top of standard SQL. It includes procedural logic, variables, error handling, and server-side programming that are important in SQL Server work.
Hire a T-SQL specialist when the main work is inside SQL Server scripts, procedures, query tuning, or reporting logic. If the project is mostly about application code or cloud setup, a broader specialist may be better.
A strong T-SQL freelancer usually knows SQL Server tools, indexing, execution plans, and basic database design. Experience with SSMS, SSIS, SSRS, Azure SQL, and source control is often useful too.
Yes, T-SQL remains central in Azure SQL because the query language and much of the database logic still matter. The main difference is often in deployment, scaling, and platform features around the code rather than the language itself.
A T-SQL specialist works best with clear table structures, sample data, business rules, and examples of slow or failing queries. Good context saves time and helps the specialist avoid fixes that solve one issue but create another.
Most T-SQL work can be done remotely because the core tasks are script review, testing, and query tuning. On-site time in Dusseldorf can help when a team needs fast access to stakeholders, sensitive systems, or live incident coordination.
Look for clear query logic, careful handling of joins and transactions, and evidence that the person thinks about performance, not just correctness. A strong T-SQL freelancer can explain why a query is slow, what index or rewrite helps, and what the side effects might be.
The average hourly rate of freelancers in Dusseldorf, Germany who have used T-SQL in their recent projects is 101 €, which corresponds to a daily rate of about 810 € based on an 8-hour working day.
Of the freelancers in Dusseldorf, Germany who have used T-SQL in their recent projects, 100% hold at least a Bachelor's degree and 50% hold at least a Master's degree.
On average, freelancers in Dusseldorf, Germany who have used T-SQL in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Dusseldorf, Germany who have used T-SQL in their recent projects are German (100%), English (100%), and Arabic (33%).
The most common industries among freelancers in Dusseldorf, Germany who have used T-SQL in their recent projects are Professional Services (100%), Information Technology (83%), and Energy (67%).
The most common business areas among freelancers in Dusseldorf, Germany who have used T-SQL in their recent projects are Information Technology (100%), Business Intelligence (83%), and Product Development (83%).
Main locations of FRATCH Experts, who have recently used T-SQL
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.
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