
SQL Experts
in minutes from over 15,000 CVs with the power of AIHire experts who design reliable data models, tune complex queries, and build reporting or integration solutions across MySQL, PostgreSQL, SQL Server, and cloud data services. FRATCH matches you quickly and precisely with vetted, available freelancers.
Meet FRATCH Experts who have recently used SQL
Alwin G.
Last position:
IT Interim Manager & AI Strategist
- Founder of CheironX: AI-supported GRC management (ISO 27001, BSI IT-Grundschutz, TISAX, DORA)
- Strategic focus on Agentic AI and GenAI for modern IT Governance, Risk & Compliance Management
- IT interim management and strategic consulting
Peter V.
Last position:
IT Administrator at SEAT Deutschland
- Creating concepts and architecture for domain integration (SEAT into the VW structure)
- Domain trusts and administration
- Operation and administration of Windows 2022/ 2025 servers and domains
- Domain restructuring
- GPO and SG editing and migration
- DNS restructuring and migration
Technologies: Windows 2022, Active Directory, ADFS, AD Azure Connect, DHCP, DNS, GPO, VMWare vSphere, Hyper-V, Powershell, Jira, MS Office 365,), SCCM, VSAN Fileservices, Approximately 800 servers, 400 users
Dany-Armand D.
Last position:
Senior Data Scientist at ibg NDT GmbH
- Investigate the relationship between Eddy Current Testing (ECT) signals and microstructural properties
- Detect latent patterns in ECT data that reflect intrinsic material characteristics
- Develop and validate predictive models for microstructural classification and quantification, using hardness and case depth as benchmarks
- Apply Bayesian Structural Equation Modeling for advanced data analysis
Timo H.
Last position:
Software Developer at Smiths Detection
- Extension of a Swing-based UI for recording Security Restricted Articles during baggage screening.
- Introduction of a new workflow for recording Deboarding Events.
- Extension of the reporting system for Security Restricted Articles and Deboarding Events.
- Implementation using JBoss Wildfly, PostgreSQL, spring-boot 3.x, Java 8/21, Swing, JSF, JAX-RS/Resteasy, Docker, Maven, Kiro.
Max R.
Last position:
Senior AI Engineer and Technical Advisor (Freelancer) at dialpad
Serving as AI technical advisor to Dialpad's Telephony Engineering division while building AI products hands-on. Currently developing MCP-based tooling for AI text and voice agents: agent authoring, integrations and adoption of existing agents, shared authentication and API contracts, and durable workflow state. This includes text and voice tests that evaluate agent behavior, latency and task completion.
In parallel, helping Dialpad's engineers adopt QualityLayer and use Claude Code and Codex effectively. This ongoing work covers context management for large codebases, reusable plan-implement-test-review workflows connected to CI/CD, playbooks, hands-on workshops, labs and pair programming.
Technologies: AI Agent Products (Text & Voice Agents, MCP, LLMs, Python, TypeScript), Agent Tooling (Authoring, Integrations, OAuth, Durable State), Quality & Evaluation (Text & Voice Tests, Evals, Regression, Traces), Agentic Engineering (Claude Code, Codex, QualityLayer, Hooks, Prompts), Context Engineering (RAG, Vector Stores, Codebase Embeddings), Software Delivery (CI/CD Integration, Agentic Loops, PR Automation), Enablement & Coaching (Workshops, Hands-On Labs, Pair Programming)
Reinhold M.
Last position:
Business Requirements Engineer, Proxy Product Owner, Tester at AXA Konzern AG
Working Environment
- Insurance / Claims Management (Property, Liability, Automotive)
- REST-based ClaimAPI with Guidewire ClaimCenter
Scope
- Further development of the internal REST-based ClaimAPI with Guidewire ClaimCenter as the backend and various portals/front-end offices as clients, and with the following objectives: + increased AI-supported claims processing outside of Guidewire ClaimCenter + and support for all lines (property, liability, automotive).
- Further development of automated claims processing
Activities
- Interfacing IT & Business
- Design activities with documentation in Confluence, Jira: + Requirements engineering (functional and non-functional) + Design of REST endpoints and coordination with interface partners (esp. AI-colleagues) + Identification, design and evaluation of alternative solutions (moving away from a monolithic approach toward fine-grained endpoints, with code reuse across all lines if possible) + Creation / refinement of product backlog items in Jira, i.e. epics, user stories and tasks, incl. alignment with developers & POs during (pre-)refinement sessions + Using AXA Secure GPT when creating / refining user stories (description, acceptance criteria) and designing REST endpoints + Estimation and prioritization of user stories and tasks during Sprint Planning sessions + Coordination and support during the implementation of Product Backlog items + Driving decision making with preparation and presentation of decision-making documents
- Quality assurance: + Test management, including test case creation using Xray in Jira + Test execution using Bruno as REST client and in Guidewire ClaimCenter + Submission of test artifacts for PO approval + Analysis of production bugs
Methods Big Room Planning (aka PI-Planning in SAFe), Scrum, BPMN, EPK, UML, ERM, DDD
Tools / Tech Stack Teams, Confluence, Jira with Xray, OpenAPI/Swagger, REST, JSON, XML, MS Office, Bruno, GitHub repository (reading), Guidewire ClaimCenter, AXA Secure GPT (AXA's in-house GenAI solution based on Azure OpenAI)
Michael F.
Last position:
Platform Architect (Project lead) at Würth IT
I designed and built a self-service AWS platform for Data Science teams with little or no infrastructure-as-code experience. A team writes about 10 lines of Python and gets a deployable stack with full SDLC release cycle that already follows the governance rules. Networking, encryption, IAM and tagging are decided by the platform, not by each team.
New teams or AWS accounts are onboarded with one pull request. Waste prevention and cost control is built into the defaults: Data scientists don't need infrastructure skills.
- Construct library (AWS CDK, Python). Built a versioned catalog of about 20 hardened constructs for being used in data-science projects with ML context
- Governance as code
- Multi-account, multi-tenant
- Golden-path scaffolding
- CI/CD and supply chain. Built reusable GitHub Actions workflows
- Release engineering
- QA with e2e, contract testing and unit test coverage with each release candidate
Jens L.
Last position:
Consulting Digital Development & Transformation at European Mar GmbH
Developed the product vision and outcome strategy for a new registry platform, designed a management workshop for strategic alignment, conducted BPMN process mapping across systems and roles, analyzed user story practices and further developed them on an outcome basis, and brought together stakeholders from business departments, management and the external development partner.
Skills: Product Strategy, Outcome Roadmapping, Stakeholder Workshops, BPMN/Process Analysis, Miro, Linear
Fadi S.
Last position:
AI-Engineer at Recruitment Agency
- Design, development, and productive rollout of an Enterprise HR Copilot based on Microsoft Copilot Studio to automate internal HR processes
- Development of an AI-supported assistant for answering employee inquiries based on a SharePoint knowledge base and internal company HR documentation
- Integration of the Copilot into Microsoft Teams, including welcome logic, user guidance, and role-based routing
- Automation of HR processes and approval workflows with Microsoft Power Automate to reduce manual processing steps
- Development of realistic HR documents and response templates with Azure OpenAI, taking business requirements and consistent company policies into account
- Implementation of prompt strategies, knowledge management, and response optimization to improve response quality and user acceptance
- Close collaboration with business departments to analyze requirements and integrate the AI solution into existing company processes
Technologies:
Microsoft Copilot Studio, Microsoft Teams, Azure OpenAI, SharePoint, Power Automate, Power Platform, Microsoft 365, Prompt Engineering, Workflow Automation
Silvia B.
Last position:
Business Consultant - Product Management Banking at Aareal Bank AG
- Focus on optimizing and further developing the internal customer EBICS application
- Functional and technical consulting for Aareal First Financial Solutions AG on EBICS standard products and applications in the areas of operations and further development, as well as project-related communication with external development partners and the product manufacturer to implement the corresponding technical optimizations
- As the functional coordinator, providing advice on content-related and regulatory requirements as well as technical prerequisites and requirements, and bringing these together at the functional level
- Consulting on the use of EBICS formats
- Reviewing the current EBICS standard for optimization and further development potential
- Analyzing the current state to identify development potential and deriving appropriate recommendations for action while considering regulatory requirements
- Conducting EBICS tests throughout the project
- Functional responsibility for requirements management and, in this context, recording and documenting requirements for such tests
- Designing a functional and sustainable test management system
- Conducting and evaluating tests
- Consulting on sustainable quality assurance and audits
- Project language: German and English
- Tools/Methods: MS Project, MS Office, MS Visio, TestRail, Confluence, Jira, Business Logics Bankkrecher, Business Logics Test Data Generator, Business Logics Banking Tool, Business Logics Test System, DBEAVER, Squirrel, Unix Virtual Machines, WinSCP, Kitty, Putty, various Aareal Bank products, Online Banking Portal, Aareal Sign, core banking system, SAP Blue Eagle, SAP RE-FX, Aareon Wodis Sigma, Haufe Real Estate Wowinex, GAP Group Immotion, UTS Karthago, SAP IS-U/Waste, SIV kVASy, various EBICS clients
Amit S.
Last position:
IT Project Manager – SAP S/4 HANA Delivery Consultant at CHG Meridian UK Limited
- Managed the integrated SAP S/4HANA delivery plan for 12 BTS workstreams, including milestone, dependency, and governance management.
- Coordinated end-to-end delivery across Business, IT, and Operations, focusing on execution, readiness, and issue resolution.
- Responsible for RAID, test, cutover, and deployment management to ensure a successful go-live.
- Implemented KPI tracking, status reporting, and PMO governance to provide transparent management of performance, risks, and escalations.
William N.
Last position:
Power BI Solutions Architect/Engineer & AI Consultant at AVERDUNG GmbH
- Redesign of the company's BI infrastructure: replacement of a fragmented landscape of manually maintained Excel solutions and CSV imports with a centralized Power BI environment featuring a unified data model as the company-wide single source of truth
- Consolidation of previously isolated reporting logic into a central semantic model – eliminating redundant files, manual data transfers, and inconsistent metrics between departments
- Forecasting & planning: Design and implementation of company-wide liquidity planning in Power BI – from business logic to a fully automated, data-source-driven planning model replacing the previous manual Excel process; enables rolling forecasts and continuously up-to-date cash flow transparency for management
- Optimization of existing Power BI dashboards in terms of performance, structure, and analytical value using an AI-native approach
- Analysis and improvement of the data model, including data quality analyses, data cleansing, and consistent modeling using star schema, DAX, and Power Query
- Incident & anomaly analysis: Identification, investigation, and explanation of data anomalies, including root-cause analysis and concrete recommendations for action
- AI solution architecture: Connecting Business Central and Power BI to LangDock via MCP (Model Context Protocol) for AI-supported data usage
- Creation of a historical data layer as a basis for trend and time-series analyses
- AI-supported automation: Design and development of AI skills, agents, loops, and processes for the automated analysis and interpretation of reports
- Automated reporting workflow: Setup of scheduled, automated email distribution of AI-generated analyses and recommendations to stakeholders
- Gathering and documentation of business requirements and coordination with business departments and IT as part of requirements engineering / product owner activities
- Breaking down overall requirements into clearly defined work packages and tasks
- Definition, prioritization, and management of milestones throughout the entire project lifecycle
Tools: POWER BI, M365, Copilot Studio, MIRO, Microsoft Business Central, Microsoft Fabric, Claude AI, ChatGPT, LangDock, MS VS Code
Patrick L.
Last position:
Senior GenAI Fullstack Developer at SBH (Schulbau Hamburg)
Remote freelance role focused on Agentic AI strategy, secure application patterns, and reusable agentic workflows for a government agency.
- Development and implementation of an open-source Agentic AI strategy for a government agency, with a focus on GDPR, security, and self-hosted solutions
- Development of reusable agentic workflows and business applications that enable non-technical employees to solve business problems independently
- Implementation of nine business applications with Single Sign-On (SSO) and Azure PostgreSQL integration on Hetzner Linux servers
Techstack: Python, Streamlit, Anthropic SDK (Claude), Azure, Linux, PostgreSQL, MS SQL, Angular
Robert D.
Last position:
Software Architect at FinTech / Wealth Management
- Analysis of existing microservice structures and integration into the event-driven architecture
- Design and implementation of prototypes
- Introduction of structured workflows and integration into a solid testing strategy
- Team: Small specialized team (3-5 people) from analysis through implementation readiness
- Documentation of architectural decisions and definition of interfaces
- Integration of the event-driven pipeline into the existing landscape
- Technologies: Kafka, Docker, Microservices, Event-Driven Architecture, Java, Liquibase
Yusuf C.
Last position:
Senior Software Engineer at LeiKon GmbH
- Development of scalable backend applications with C#/.NET and Java
- Design and implementation of distributed microservice architectures
- Development and integration of REST APIs for industrial applications
- Development of modern web applications with React, Angular, and TypeScript
- Implementation of MQTT-based communication solutions
- Integration of industrial protocols such as OPC UA and Modbus TCP
- Development of batch, process control, and HMI components
- Containerization and deployment of applications with Docker
- Conducting code reviews and supporting architecture decisions
- Close collaboration with Product Owners, QA, and interdisciplinary teams
- Analysis of business requirements and implementation of technical solutions
- Further development of existing software architectures with a focus on maintainability and performance
Technologies: C#, .NET, ASP.NET Core, Java, C++, React, Angular, TypeScript, Vue.JS, MQTT, OPC UA, Modbus TCP, Docker, GitLab, MariaDB, MySQL, Linux
Discover over 15,000 top freelancers
Statistics of experts using SQL
Aggregated from the professional profiles of matched freelancers.
Experience
19 years

Position duration
5.1 years

Positions per freelancer
12

Top business areas
Information Technology, Product Development, Project Management

Top industries
Information Technology, Banking and Finance, Manufacturing

Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
90%
Master's degree or higher
60%
Doctorate
9%

Certifications per freelancer
3

Most common languages
German, English, French

Speak two or more languages
97%
Based on our profile pool as of 16 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology 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 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 16 Oct 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%)
- Banking and Finance (46%)
- Manufacturing (40%)
- Professional Services (39%)
- Automotive (37%)
- Retail (32%)
- Education (30%)
- Healthcare (30%)
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 define, read, change, and secure data in relational databases. Companies use it to connect applications with structured information, enforce relationships between records, and turn operational data into reliable answers. SQL supports both day-to-day transactions and analytical workloads.
Where it is used
SQL appears in nearly every system that depends on consistent, queryable data. Typical deliverables include:
- Relational schemas for customer, product, financial, and operational data
- Queries, views, stored procedures, and database functions
- Reporting datasets, dashboards, and analytics pipelines
- Data migrations, imports, exports, and validation routines
- Access controls, audit logic, and retention structures
Ecosystem and dialects
SQL is a language, while database products implement their own dialects and capabilities. Professionals often work with PostgreSQL, MySQL, MariaDB, Microsoft SQL Server, Oracle Database, SQLite, or cloud services such as Amazon Aurora, Google Cloud SQL, and Azure SQL. Strong knowledge includes indexing, transactions, constraints, execution plans, and the differences between vendors.
When companies need specialists
Freelance expertise helps when a database has become slow, difficult to change, or hard to trust. Companies also bring in SQL specialists for a new application, a reporting overhaul, a migration between database systems, or a move toward cloud infrastructure. Clear signs include recurring query timeouts, duplicated data, fragile scripts, and reports that do not agree.
Skills around SQL
Effective SQL work connects database logic with the wider application and data landscape. Relevant adjacent skills include data modeling, ETL and ELT, Python, application frameworks, REST services, business intelligence tools, and cloud storage. Professionals may also handle backup planning, replication, monitoring, testing, and release processes.
What strong professionals deliver
A strong specialist starts by understanding data relationships, business rules, workload patterns, and operational risks. They write readable queries, test edge cases, measure changes with execution plans, and document decisions for the team. They also distinguish a quick query fix from a durable model improvement, protect sensitive data, and communicate trade-offs clearly.
Frequently asked questions
What clients ask us most about SQL — answered in short.
SQL is used to create and work with data in relational databases. It supports searches, inserts, updates, reporting, permissions, migrations, and the rules that keep related records consistent.
SQL is usually a strong choice when data has clear relationships, transactions, and structured reporting needs. NoSQL systems can suit flexible schemas, very large distributed workloads, or document and key-value access patterns, so the decision depends on consistency, query patterns, and operational constraints.
SQL specialists commonly work with PostgreSQL, MySQL, MariaDB, Microsoft SQL Server, Oracle Database, or SQLite. Experience with one product transfers well, but vendor-specific syntax, indexing, monitoring, and cloud deployment details still matter.
SQL work often connects with data modeling, ETL or ELT, Python, application development, and business intelligence tools. Knowledge of cloud databases, APIs, version control, testing, backups, and access management can be important for a complete delivery.
SQL project needs vary with risk and scope rather than a fixed experience level. A simple report may need focused query skills, while a migration, high-volume workload, or regulated dataset calls for proven modeling, performance, testing, and recovery practices.
SQL work is often suitable for remote collaboration because schemas, queries, documentation, and test environments can be shared securely. On-site sessions may still help with sensitive systems, access restrictions, workshops, or close coordination with operations teams.
SQL quality is shown through correct results, readable logic, appropriate indexes, safe transactions, and evidence from realistic tests. Ask for explanations of trade-offs and review how the specialist handles null values, duplicates, permissions, failures, and future changes.
SQL specialists should clarify the database product, data volume, workload patterns, security rules, environments, and definition of success. They should also confirm access arrangements, migration or rollback plans, test data, dependencies, and who will maintain the result after delivery.
The average hourly rate of freelancers who have used SQL in their recent projects is 94 €, which corresponds to a daily rate of about 754 € based on an 8-hour working day.
Of the freelancers who have used SQL in their recent projects, 90% hold at least a Bachelor's degree, 60% hold at least a Master's degree, and 9% hold a doctorate.
On average, freelancers who have used SQL in their recent projects have 19 years of professional experience, with a single engagement typically lasting around 5.1 years.
The most common languages among freelancers who have used SQL in their recent projects are German (98%), English (96%), and French (19%).
The most common industries among freelancers who have used SQL in their recent projects are Information Technology (86%), Banking and Finance (46%), and Manufacturing (40%).
The most common business areas among freelancers who have used SQL in their recent projects are Information Technology (93%), Product Development (75%), and Project Management (59%).
Main locations of FRATCH Experts, who have recently used SQL
Our freelancers and interim experts are at home all over Germany — available on-site in Berlin, Hamburg, Munich and every major business hub, or fully remote. Choose a city to discover matched specialists, local market insights and up-to-date availability.
Countries:
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