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Find experienced SQL Developers in Germany matched in minutes from over 15,000 CVs with the power of AI.

Need help with complex joins, query tuning, stored procedures, ETL logic, or database reporting? Work with SQL Developers who can support Oracle, Microsoft SQL Server, PostgreSQL, MySQL, and data-heavy application teams. Get fast, precise matching with vetted, available freelancers.

About the role

SQL work that ships

SQL Developers build and improve the database logic behind reporting, applications, and data pipelines. They write queries that are correct, maintainable, and fast enough for real use. They also clean up existing SQL that has become hard to read or slow to run.

  • Write complex queries, views, and stored procedures
  • Tune slow statements and reduce database bottlenecks
  • Support ETL and data transformation logic
  • Build reporting queries for BI and analytics teams
  • Review database code for quality and consistency

Skills that matter

A strong SQL Developer understands data models, query plans, indexing, transactions, and constraints. They know when to keep logic in SQL and when to move it into an application layer. They also write code that other developers can maintain without guesswork.

Common tools and environments include Oracle, SQL Server, PostgreSQL, MySQL, SSMS, DBeaver, and data warehouse stacks. Depending on the project, they may work close to Power BI, Tableau, Python, or an application backend team.

When companies bring one in

Freelance SQL Developers are a good fit when an internal team is overloaded, a release is blocked by database work, or a reporting layer needs urgent fixes. They also help during migrations, audits, performance reviews, and data cleanup projects.

In Germany, this often comes up in enterprise IT, manufacturing, logistics, finance, and SaaS teams that need reliable database support without adding a permanent hire. Remote work is common, but on-site sessions can help when data access, stakeholder alignment, or legacy systems are involved.

What good looks like

Strong SQL people do more than write working queries. They ask about data volume, locking, refresh cycles, and downstream use before they start.

  • They document assumptions and edge cases
  • They keep queries readable and reusable
  • They test with realistic data and check execution plans
  • They understand schema changes and release risk
  • They communicate clearly with analysts, backend engineers, and database admins

Adjacent titles

Searches for this role often include SQL programmer, SQL engineer, database developer, and database programmer. In practice, these titles usually point to the same hands-on work around query design, database logic, and performance.

The exact title matters less than the assignment. A freelance SQL Developer should be able to step into your schema, understand the business rules, and improve the database code without slowing the team down.

Choosing the right freelancer

The best choice is someone who has solved problems like yours before. If the work is mainly reporting, look for strong analytical SQL and clear communication. If it is platform work, choose someone who is comfortable with schema design, deployment, and performance tuning.

For teams in Germany, language skills and working style can matter as much as technical depth. The right freelancer fits the collaboration model, handles documentation well, and can work effectively with developers, analysts, and business users.

Meet FRATCH SQL Developers

Any-Arlene Niyubahwe

Any-Arlene Niyubahwe

Data Analyst · SQL · Python · Tableau · Power BI

München

Last position:

Co-Founder · Data Engineering & Backend at zirikana (Kirundi Bible Web App) – Civic Technology

  • Built a Python pipeline that converts lectionary web content into structured daily JSON, applying liturgical-calendar rules for accurate weekday and Sunday coverage.
  • Shipped a read-only FastAPI REST API with shared Pydantic models and delivered a Kirundi-first web client for browser and mobile use.
  • Owned the data layer and backend architecture, collaborating closely on system architecture and interfaces while automating refreshes with GitHub Actions and validating the ETL with pytest.
  • Impact: Created a reliable, API-driven source of truth for daily Bible readings in Kirundi, enabling consistent access to previously unstructured content.
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Daniel Martinez Maqueda

Daniel Martinez Maqueda

Founding Database Engineer

Berlin

Last position:

Founding Database Engineer at tonbo.io

  • Working on the next iteration of tonbo to make it the most flexible in-process analytical database in the market that scales and is operated with strong availability

  • Introduced object scope cache to the remote storage layer to avoid I/O churn

  • Working on refactoring WAL to support remote storage

  • Taking care of the health of the systems as well as designing the operational story and bringing them to production

  • Technologies: LSM, WAL, Arrow, Parquet, Rust

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Judith Beyrle

Judith Beyrle

Power BI / Tableau / SQL / GA4 Data Analyst & BI Developer

Frankfurt am Main

Last position:

BI & Analytics Consulting

  • Analysis of web and campaign performance to derive actionable insights for marketing and growth optimization
  • Implementation and maintenance of tag management solutions to ensure reliable and consistent data collection
  • Continuous development and optimization of reporting structures with a focus on scalability and data quality
  • Conducting regular deep-dive analyses and leading monthly stakeholder sessions to present findings and align on optimization measures
  • Designing and managing end-to-end data flows from data collection to visualization
  • Tools: GA4, Google Tag Manager, Looker Studio, Airbyte, BigQuery
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G Purushothm

G Purushothm

Backend Developer Specializing in PL/SQL, Oracle EBS Technical Consultant, Oracle Fusion SCM/Financials

Berlin

Last position:

Oracle Apps Technical Consultant, Oracle EBS to Oracle Fusion SCM Migration Specialist at LTIMindtree India PVT LTD.

  • Client: Terex Corporation
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Frank Speelmans

Frank Speelmans

Software and Database Developer

Grafschaft

Last position:

Software and Database Developer at Frigosped GmbH

  • Upgrading the existing Delphi 2010 version to Delphi 10.4.
  • Making all software products Terminal Server compatible.
  • Maintaining and enhancing the in-house shipping software until it is replaced by a newly purchased version.
  • Technologies: Delphi 2010, Delphi 10.4, Advantage Database, DevExpress, Git, Devart, OOP.
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Timon Ringwald

Timon Ringwald

Database Developer – Research Project – Healthcare Billing

Bielefeld

Last position:

Database Developer – Research Project – Healthcare Billing at MeQuEn GmbH

  • Optimizing dynamically generated databases for logging
  • Tools: MariaDB, C#, Visual Studio, VMs, Docker, Windows, Linux
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Stefan Corsten

Stefan Corsten

SQL, ETL, Reporting, DWH Development

Munich

Last position:

SSIS Development at Stadtsparkasse München

  • Replacement of a Java application and the Oracle DB for loading the internal WerWasWo system using SSIS.
  • Development of SSIS packages to load text files into the database (SQL Server)
  • Development of a database project for deployment on various servers
  • Creation of queries to monitor the loading runs
  • Development of a PowerShell script to automate the deployment of the SSDT projects.
  • Oracle, SQL Developer, Microsoft SQL Server 2022 on-premises, SQL Server Management Studio v21, Visual Studio 2022, SSIS, SSDT, PowerShell.
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Lutz Haake

Lutz Haake

Oracle DBA | Technical Analyst | PL/SQL Developer

Groß-Gerau

Last position:

Developer for Oracle Forms, PL/SQL, Java at AIG Europe S.A.

  • Development and implementation of backend components with PL/SQL and Oracle Forms 12c. Adaptation and further development of the policy administration system. Technical consulting in UI design with a focus on integrating existing Oracle Forms and the requirements of the BIPRO framework.
  • The project takes place in the technical environment of BIPRO, SQL databases and Oracle Forms applications. The assigned work includes backend development and technical further development in the above project with the following tasks:
  • Development and implementation of backend components with PL/SQL and Oracle Forms 12c to technically map the business processes and ensure a stable and efficient system architecture
  • Adaptation and further development of the policy administration system to ensure system functionality in line with the requirements of the new broker communication program
  • Analysis of the existing system to identify and avoid errors and technical problems during implementation, in order to enable a smooth transition to the new system
  • Carrying out patching and further development of existing Oracle and Oracle Forms applications to ensure compatibility and security of the systems in use
  • Technical consulting in UI design with a focus on integrating existing Oracle Forms and the requirements of the BIPRO framework.

Label: PL/SQL, Java, Oracle RDBMS and Oracle Forms

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Joachim Bleichert

Joachim Bleichert

Further development and maintenance of a company-wide monitoring database

Munich

Last position:

Further development and maintenance of a company-wide monitoring database at BASF SE

  • Maintenance of a company-wide Oracle database that consolidates information from various internal databases, Active Directory, and other systems

  • Data transfer via Oracle jobs between the monitoring database and other systems

  • Data visualization and processing using APEX and Oracle Forms (with Forms being replaced by APEX)

  • Gathering requirements from business units

  • Designing the implementation

  • Implementation at the database level and in APEX

  • System maintenance

  • Troubleshooting

Technologies: Oracle 12, Oracle 19, Oracle PL/SQL, Oracle APEX, SQL Developer

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Stephan Zinke

Stephan Zinke

GIS expert and database developer for passenger information systems

Brombachtal

Last position:

GIS expert and database developer for passenger information systems at Deutsche Bahn AG

  • Developed automated tools for train passenger information with PostgreSQL/PostGIS (administration & development)
  • Used imposm, osm2pgsql, pgsql2shp, GeoServer (WMS, WFS, WCS, etc.)
  • Used various geo formats, e.g. OpenStreetMap (OSM)
  • Technologies: PostgreSQL/PostGIS, imposm, osm2pgsql, pgsql2hp, ESRI Shapefiles, QGIS, Python 3.x, PyDev, Eclipse, Linux, AWS, OSM, XML, bash, pgsql, Docker
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Thomas Fritz

Thomas Fritz

Senior Fullstack Developer .NET | Angular | SQL

Rodgau

Last position:

Senior Fullstack Developer at DB InfraGO AG

  • Frontend: new development in Angular
  • Backend: new development in ASP.NET Web API
  • Database: modeling, implementation, and operation based on Microsoft SQL Server
  • Requirements management, design, and implementation
  • Deployment, maintenance, operation
  • Knowledge transfer to internal staff
  • Agile development (SCRUM)
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Evrim İlden

Evrim İlden

T-SQL Database Expert

Heidelberg

Last position:

T-SQL Database Expert at TST Logistics IT

  • Implemented source code management for existing databases using SSDT and Bitbucket
  • Implemented continuous integration pipelines with Azure DevOps
  • Supported implementation of user stories (T-SQL and VBA) for existing database systems
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Horst Wolfenstätter

Horst Wolfenstätter

SQL Server Migration

Lampertheim

Last position:

SQL Server Migration at Cairo AG

  • Carried out the SQL Server migration in the Stadtwerke Schwetzingen project
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Matthias Barfknecht

Matthias Barfknecht

Database Developer / Database Architect

Aschaffenburg

Last position:

Database Developer / Database Architect at Freelancer

  • Advised and supported application developers on database topics
  • Designed and developed interfaces
  • Optimized database performance
  • Automated rollout and release processes in the database environment
  • Implemented security requirements
  • Delivered metrics to management
  • Developed new scripts to automate rollouts
  • Adapted scripts for database deliveries
  • Identified and resolved issues during Oracle 12 to 19 upgrades
  • Adjusted database parameters, permissions and roles
  • Conducted feasibility studies and migrations from AWS EC2 to AWS RDS
  • Migrated database delivery versioning from SVN to Git/Artifactory using Ruby and Artifactory REST API
  • Analyzed Statspack/AWR reports and optimized long-running SQL statements
  • Configured SSL/TLS encryption for Oracle databases including proof of concept and rollout planning
  • Configured Kerberos authentication for Oracle users with Active Directory and single sign-on
  • Conducted database technology selection workshops for microservices (SQL, NoSQL, Amazon S3)
  • Modeled and designed a PostgreSQL Docker instance with liquibase scripts for Git pipeline deployment
  • Refactored mass data export interfaces and developed PL/SQL packages
  • Developed PL/SQL packages for REST-service communication and SOAP data conversion
  • Supported cloud migration of Oracle databases to AWS RDS with migration scripts
  • Developed and refactored PL/SQL functions/packages for performance and business logic
  • Planned and prepared new database schemas using execution plan analysis and AWR metrics
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SQL Developers statistics

Aggregated from the professional profiles of matched freelancers.

Experience

24 years

Position duration

2.4 years

Positions per freelancer

18

Top business areas

Information Technology, Product Development, Business Intelligence

Top industries

Information Technology, Healthcare, Manufacturing

Certification focus areas

Information Technology, Project Management, Business Intelligence

Bachelor's degree or higher

78%

Master's degree or higher

56%

Doctorate

11%

Certifications per freelancer

3

Most common languages

German, English, French

Speak two or more languages

86%

Daily Rate Distribution

0 2 4 6 8
<€640 €640-800 €800-960 €960-1120 €1120+

The chart shows how the daily rates of freelancers in this role 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. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

Average rates for SQL Developers & Seniority distribution

Rates are based on recent contracts and do not include FRATCH margin.

800
600
400
200
Rate comparison chart
Daily rate avg. 747 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

800
600
400
200
Rate comparison chart
Median rate 720 €

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.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

Similar Roles

Database Developers in Germany Oracle Developers in Germany BI Developers in Germany Database Administrators in Germany ETL Developers in Germany Power BI Developers in Germany Data Warehouse Consultants in Germany Oracle Database Administrators in Germany ERP Developers in Germany Backend Developers in Germany
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Frequently Asked Questions

Questions in mind? Get key insights about FRATCH

A SQL Developer writes and improves database queries, views, procedures, and data transformation logic. The work often includes performance tuning, report support, and fixing SQL that has become fragile or slow. On larger projects, they may also help shape schema changes and review database-related release work.

Hire a SQL Developer when the main problem sits in the SQL layer: query logic, reporting, data shaping, or database performance. A backend developer is usually broader in application code, while a DBA focuses more on database administration, security, and operations. In many projects, the SQL Developer sits between both and handles the code that directly talks to the data.

Look for strong query writing, data modeling basics, indexing knowledge, and an understanding of execution plans. A solid SQL Developer should also be comfortable with joins, aggregations, transactions, and troubleshooting slow database code. If the project touches ETL or analytics, experience with data flows and reporting tools is a plus.

A freelancer is a good fit when you need focused help for a migration, performance issue, reporting backlog, or short-term database cleanup. This is useful when internal staff are busy or the need is specialized and time-sensitive. A freelance SQL Developer can join quickly, work against a clear scope, and hand over clean documentation at the end.

Yes, most work can be done remotely if access, reviews, and test data are set up properly. For teams in Germany, remote collaboration is common, but on-site sessions can still help at the start of a project or during workshops with business users. Good communication and clear documentation matter more than location for most assignments.

That depends on your stack, but common tools include SSMS, DBeaver, and database-native query editors. Common systems include Oracle, Microsoft SQL Server, PostgreSQL, and MySQL. A strong SQL Developer should learn your environment quickly and adapt to your naming rules, deployment process, and data model.

Check whether the queries are correct, readable, and stable under realistic data volumes. Good work also shows up in better execution plans, fewer manual fixes, and clear explanations of why a change was made. If they document assumptions and edge cases well, that is usually a strong sign.

Often, yes, or at least very close. In many companies, database developer, SQL programmer, and SQL Developer all describe the same hands-on work on database logic and query performance. If the role also includes schema design, stored procedures, and data quality checks, you are usually looking at the same profile.

The average hourly rate for SQL Developers in Germany is 93 €, which corresponds to a daily rate of about 747 € based on an 8-hour working day.

Of the freelancers working as SQL Developers in Germany, 78% hold at least a Bachelor's degree, 56% hold at least a Master's degree, and 11% hold a doctorate.

On average, freelancers working as SQL Developers in Germany have 24 years of professional experience, with a single engagement typically lasting around 2.4 years.

The most common languages among freelancers working as SQL Developers in Germany are German (100%), English (86%), and French (21%).

The most common industries among freelancers working as SQL Developers in Germany are Information Technology (93%), Healthcare (71%), and Manufacturing (71%).

The most common business areas among freelancers working as SQL Developers in Germany are Information Technology (100%), Product Development (79%), and Business Intelligence (71%).

FRATCH SQL Developers main locations

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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FRATCH CEO

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