SQL Experts in Bremen
to turn complex data into reliable systems, matched in minutesHire experts who design relational databases, write efficient queries and build dependable reporting pipelines with SQL, PostgreSQL, MySQL or Microsoft SQL Server. FRATCH matches you quickly and precisely with vetted, available freelancers.
Meet FRATCH Experts in Bremen, who have recently used SQL
Frank D.
Last position:
Project management, development and system integration for retrofit on a Uranus thermionic mass spectrometer at Forschungszentrum Jülich
- Development of a retrofit concept, including qualification measures
- Development, installation and commissioning of the required hardware and software
- Development of a safety concept
- Execution and documentation of in-house verifications / qualification
- Initiation and implementation of measures in case of non-conformities
- Execution of CE conformity assessment procedures and CE marking
Kersten S.
Last position:
SAP SD Consultant – ECC E-Invoicing France at Mechanical Engineering, France
The main goal of the project was to link the ECC system to the French e-invoicing network. This includes ensuring compliance with national e-invoicing regulations and achieving e-reporting readiness for the digital transfer of transaction data.
Standardization of order management processes to achieve the required data quality and consistency.
Ensuring correct VAT determination through targeted developments (customizing and, if necessary, ABAP) in the SAP SD module to comply with EU tax regulations.
Design and configuration of the down payment process (Down Payments) in the SAP ECC system.
Vitalijs V.
Last position:
Mentor at EdSyl
- Mentored participants through structured learning paths and hands-on projects.
- Provided feedback and guidance on AI integration and product management best practices.
- Mentor teams on AI adoption, enterprise product strategy, and practical delivery choices.
Dimitri S.
Last position:
Fullstack Developer, Integrator at Generali Deutschland Versicherung AG
- Developing automated build and deployment processes for the exclusive front office systems
- Integrating the front office systems into the IT infrastructure
- Developing innovative, user-friendly sales software for financial advisors
- Ensuring quality and flexibility through automation and working with CI/CD
- Working according to DevOps principles
- Operating the software together as a team in the AWS cloud and Azure cloud
- Deploying software artifacts to testing and production environments
- Maintaining the test environments
- Performing error analysis and providing information for further root cause analysis
- Maintaining and supporting the build pipeline
- Supporting load testing
- Coordinating the batch execution schedule with batch automation
- Creating concepts to further develop the software packaging process
- Building and delivering components to partners
- Developing GitLab and Jenkins pipelines for building, deploying and integrating components
- Automating processes with Spring Boot applications with a GUI (Thymeleaf, Angular 19)
- Developing RESTful Spring Boot applications with Kotlin and Angular 19, JDBC and REST accesses, data exchange via SFTP, XML (JAXB)
- Designing components using Domain-Driven Design (DDD)
- Replacing cmd and bash scripts with Spring Boot applications with a GUI
- Replacing Java 8 applications with JSP by Spring Boot 3 applications (Thymeleaf, Angular)
- Implementing frontend and backend authentication via Keycloak
- Writing JUnit tests with Mockito
- Increasing code coverage for SonarQube analysis
Kasem R.
Last position:
AI Automation Data at hmmh AG
- Independently developed an AI-powered MVP to automate content processes
- Created & optimized content with a focus on SEO & quality
- Maintained web & product content in CMS/templates
- Utilized automation & AI solutions for content creation and optimization
- Analyzed & continuously improved content
- Created & edited images using Photoshop
- Developed scripts in Python, HTML, CSS, JavaScript to process and optimize content data
Doncho P.
Last position:
AI Engineer / Data Scientist at Freelance
- Designed and implemented scalable data governance frameworks for healthcare, energy, and telecom enterprises.
- Architected data models in Azure Synapse & Power BI, enabling high-performance reporting and scalability.
- Led migration of legacy BI systems to cloud infrastructure, improving efficiency and resilience.
- Acted as a technical consultant, advising clients on architecture improvements and implementation strategies.
Nandini V.
Last position:
Senior Software Developer at Capgemini Technology Services Limited
- Designed and implemented secure backend services using Java, Spring Boot, and Hibernate, following microservice principles and RESTful standards.
- Implemented GraphQL-driven REST APIs to streamline backend services in a Gradle and Maven environment.
- Implemented OAuth2-based authentication and authorization mechanisms to secure RESTful APIs in Spring Boot applications.
Juri S.
Last position:
Software Development at Banking Environment
- Extension of an existing application with new customer requirements.
- AlmaLinux, Ubuntu; C, gcc; Oracle;
- Socket/TCP communication.
- CLion, Eclipse
- Git
Timo S.
Last position:
Developer (AL) & Consultant at IT service provider
- Development of an application suite for AppSource (7 apps) focusing on customs processing & compliance
Hannes D.
Last position:
Mobile App Developer at wikifolio
- Development and maintenance of a cross-platform mobile app with React Native (iOS/Android)
- Planning and implementing new features as well as optimizing existing functionality
- Implementing a native rich text editor (comment feature)
- Creating dynamic tables and charts including animations
- Integrating deep and native linking (Branch.io)
- Setting up and maintaining automated tests with Jest and Maestro
- Conducting code reviews to ensure code quality
- Working with CI/CD processes and automated release pipelines
- Collaborating closely with backend, design, and product teams
Nevil S.
Last position:
Partner and Managing Director at rencolab GmbH
- Developed the product vision and customer relationship management
- Developed the backend and simulation core
Saad A.
Last position:
AI Software Engineer at RoBoTec-PTC
- Built data pipelines with DVC for version control and efficient data management
- Trained and optimized AI models
- Improved CVAT with custom annotation formats, AI model integration, and streamlined annotation workflows
- Trained, debugged, evaluated, and deployed DCNN models in production
- Developed MaDCAT, an AI-powered CVAT extension for simultaneous data capture and annotation
Timo K.
Last position:
Senior Fullstack Developer
- Lead Developer / Tech Lead in a large banking group for a complete redevelopment of payment systems
- Rebuilding payment processing in stream processing
- Development and design of cross-border payment stream processing based on Kafka and Kafka Streams
- Development of different input formats for the business team using Drools rules to dynamically adjust validation rules
- Evaluation and comparison of different public cloud providers regarding the databases they offer
- Technologies & Tools: Java 21, Kotlin, Spring Boot, Kafka, Kubernetes, Azure, TDD, JEE, REST, Angular, Spark, Google Cloud, SCDF, PostgreSQL, Drools, Git, S3, MongoDB
Sanda T.
Last position:
Quality Engineer at AKKODIS (client: AIRBUS - Work package project)
- Strong understanding of Qualification process and aerospace standards (ABD0100, RTCA DO160, JAR 25)
- Successfully managed supplier progress reviews and product conformity in accordance with aerospace standards including ABD0100, RTCA DO160, and JAR 25
- Led product non-conformance containment and disposition activities across external supply chains, ensuring compliance quality standards for high-lift and hydraulic systems
- Led product non-conformance management (NCR) and applied APQP, FMEA, and 8D problem-solving (CAPA) in coordination with suppliers and OEMs, achieving a 15% reduction in process cycle time
- monitored production project KPIs (quality, timeliness, customer satisfaction) and implemented continuous improvement initiatives using Lean Six Sigma techniques
- Maintained and expanded certification scope for ISO 9001, ISO 14001, ISO 27001, ensuring alignment with both regulatory and customer-specific quality requirements
- Supported the configuration management and change control process, including MODs, MPs, TRS, SBs, and validated changes as part of certification and verification deliverables
- Authored and reviewed technical documentation (e.g., SDD, SRD, SID, PTS, V&V Summary, System Design Modification Plan, Flight Test Requests, Technical Notes), ensuring engineering definition compliance and traceability
- Engaged in product safety reviews and risk-based disposition decision-making processes, contributing to proactive quality assurance across the value stream
Discover over 15,000 top freelancers
Statistics of experts using SQL
Aggregated from the professional profiles of matched freelancers.
Experience
13 years (Germany: 19 years)
Position duration
1.7 years (Germany: 5.1 years)
Positions per freelancer
10 (Germany: 12)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Automotive, Manufacturing
Certification focus areas
Information Technology, Project Management, Business Intelligence
Bachelor's degree or higher
100% (Germany: 90%)
Master's degree or higher
62% (Germany: 60%)
Certifications per freelancer
1 (Germany: 3)
Most common languages
German, English, Russian
Speak two or more languages
100% (Germany: 97%)
Based on our profile pool as of 19 Sep 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Bremen 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 Bremen using 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 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
SQL 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 (86%)
- Automotive (43%)
- Manufacturing (43%)
- Banking and Finance (36%)
- Healthcare (36%)
- Professional Services (36%)
- Education (29%)
- Government and Administration (29%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What SQL does
SQL, or Structured Query Language, is the standard way to work with data in relational databases. Companies use it to store structured records, connect related information, enforce data rules and retrieve answers for applications, operations and analysis. SQL supports both day-to-day transactions and large reporting workloads.
Systems and products
SQL sits behind customer portals, finance systems, stock management, logistics tools and business intelligence environments. Experts use it to shape schemas, create views and procedures, and connect application services to reliable data stores. The work may involve a new database, a migration or the recovery of a slow and fragile system.
Ecosystem and tooling
The language is implemented by platforms such as PostgreSQL, MySQL, MariaDB, Microsoft SQL Server, Oracle Database and SQLite. Strong specialists understand the differences in syntax, indexing, transactions and administration across these systems. They also work with ORM tools, database clients, version control, migration frameworks and cloud data services.
Typical assignments
- Model tables, relationships, constraints and permissions
- Write and tune queries for transactional and analytical workloads
- Migrate schemas and data between database platforms
- Build reporting views, stored procedures and extraction jobs
- Investigate locking, failing queries and inconsistent records
When companies need expertise
Freelance SQL expertise helps when an internal team is redesigning its data model, replacing a legacy database or preparing a product for heavier use. It is also valuable when reports disagree, queries become slow or a migration needs careful validation. In Bremen, specialists may support local industrial, logistics and service organizations while collaborating remotely or on site with German- and English-speaking teams.
What strong specialists bring
Quality work starts with clear data requirements and a schema that reflects the business rather than a temporary workaround. Experienced professionals test queries with realistic data, inspect execution plans, protect sensitive records and document decisions. They distinguish database symptoms from application problems and leave behind maintainable SQL, repeatable migrations and practical guidance for the team.
Frequently asked questions
What clients ask us most about SQL — answered in short.
SQL is used to create, read, update and delete structured data in relational databases. Companies rely on it for user accounts, orders, inventory, financial records, reporting and the data layer of web and mobile applications.
SQL databases organize data into defined tables and relationships, which supports consistency and precise queries. NoSQL systems can be a better fit for highly flexible structures or certain large-scale access patterns, so the choice depends on the data model, transaction needs and application workload.
SQL work often requires knowledge of database design, indexing, transactions, security and backup practices. Helpful adjacent skills include PostgreSQL or Microsoft SQL Server, cloud databases, ETL processes, Python, data modeling and the application framework that consumes the data.
SQL expertise for a simple report may be limited to query design, while a migration or performance project needs deeper database knowledge. Assess the scope, data sensitivity, platform, integrations and consequences of downtime before deciding which level of specialist is appropriate.
SQL projects are often well suited to remote collaboration when secure access, clear documentation and a shared testing process are available. On-site work can help with legacy systems, restricted networks or workshops, while teams in Bremen may choose a combination of remote and on-site sessions.
SQL quality is visible in correct results, clear data models, safe migrations and predictable performance. Ask a specialist to explain indexing choices, transaction handling, test coverage, failure recovery and how they will measure improvements without exposing sensitive production data.
SQL follows common principles across these platforms, but syntax, functions, indexing options and administrative tools differ. A specialist should identify the target database early and show relevant experience with its execution planner, security model and migration approach.
SQL specialists should clarify the database platform, schema ownership, data volumes, access restrictions, environments and definition of success. They should also agree on backup procedures, deployment steps, documentation standards and whether the assignment includes application code, reporting or data migration.
The average hourly rate of freelancers in Bremen, Germany who have used SQL in their recent projects is 91 €, which corresponds to a daily rate of about 729 € based on an 8-hour working day.
Of the freelancers in Bremen, Germany who have used SQL in their recent projects, 100% hold at least a Bachelor's degree and 62% hold at least a Master's degree.
On average, freelancers in Bremen, Germany who have used SQL in their recent projects have 13 years of professional experience, with a single engagement typically lasting around 1.7 years.
The most common languages among freelancers in Bremen, Germany who have used SQL in their recent projects are German (100%), English (100%), and Russian (36%).
The most common industries among freelancers in Bremen, Germany who have used SQL in their recent projects are Information Technology (86%), Automotive (43%), and Manufacturing (43%).
The most common business areas among freelancers in Bremen, Germany who have used SQL in their recent projects are Information Technology (93%), Product Development (79%), and Project Management (64%).
Main locations of FRATCH Experts, who have recently used 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.
Berlin 
Hamburg 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Leipzig 
Dortmund 
Essen 
Dresden 
Hanover 
Nuremberg Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
