SQuirreL SQL Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used SQuirreL SQL
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 using a unified data model as the company-wide single source of truth
- Consolidation of previously isolated reporting logic in a central semantic model – elimination of redundant files, manual data transfers and inconsistent metrics across 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; enabling 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 specific recommendations for action
- AI Solution Architecture: Connecting Business Central and Power BI to LangDock via MCP (Model Context Protocol) for AI-supported data usage
- Development 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 delivery 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
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
Michael M.
Last position:
IT PROJECT MANAGER (MS Exchange) at Statutory health insurance fund on behalf of Randstad Digital Germany (formerly AUSY Technologies Germany)
Migration from Exchange 2016 to Exchange 2019 and Exchange Online, as well as the introduction of a backup solution and an archiving solution. The goal was to securely modernize the email and archiving infrastructure in compliance with legal requirements and ensure high performance.
Responsibilities as IT PROJECT MANAGER: Overall project management and operational coordination / Ensuring compliance with budget and resource limits / Ensuring project objectives are met / Ensuring compliance with regulatory requirements and policies, including ISMS, ITIL, and data protection requirements / Preparing and presenting management reports for the project sponsor and steering committee / Coordinating cross-functional teams across Exchange, network, data protection, and IT security / Planning and carrying out the migration from Exchange 2016 to Exchange 2019 / Planning and carrying out the migration from Exchange 2019 to Exchange Online / Planning and introducing a backup solution for Exchange Online / Coordinating an EU-wide tender for an archiving solution, including market research with potential suppliers / Planning and introducing an archiving solution for Exchange Online / Coordinating and preparing the BAS notices required for the project / Coordinating and aligning with stakeholders (for example, business units, external service providers, and suppliers) to define requirements and deliver solutions
Technical environment: MS Exchange 2016, MS Exchange 2019, MS Exchange Online, MSOffice, MS Planner, MS Powerpoint, MS Project, MS Teams, CodeTwo, Hornet Security
Bernhard S.
Last position:
Agile Business Analyst and Requirements Engineer at Deutsche Post DHL
- Agile project "PEPSi annual vacation planning MVP Lite" (digitalization project).
- Definition of state transitions for the JUP Lite functionality.
- Creation of user stories for login/logout and registration.
- Quality assurance of the business-side concept.
- Preliminary analysis for the transformation from the old PersPlan to DigiPEP.
- Tools used: Signavio, MS Office (Excel, Word, PowerPoint), Jira, Confluence, Mural, Miro, Conceptboard, MS Teams, Mattermost.
Stefan M.
Last position:
Bundesrechtsanwaltskammer
- Design, planning and execution of complex acceptance tests for a document exchange platform for the German justice authorities.
- Validation of decrypted and certificate-based message exchange via web platform, mobile app, and Java API.
- Documentation of test cases, execution steps, and test results.
- Technologies: Windows 11/10, Ubuntu, iOS, Android, Bash for Windows, Java 17, IntelliJ, Git, Jira, Confluence, Citrix Server, xJustiz standard implementation, specific justice software.
Allal K.
Last position:
Java Senior Full Stack Developer at Insurance ÖRAG
- Further development of a policy administration system (contract/claims) for the legal expenses insurer ÖRAG.
- My role: Senior Software Developer.
- The team consists of 12 developers.
- Technologies used: Java 8/21, Java EE, Quarkus, WebLogic, JPA, RabbitMQ, JTA, CI, CD, Jenkins, DB2, Maven, Jenkins, GIT (bitbucket) later GitLab, Junit, Elasticsearch, Mockito, Jira, SonarQube, Scrum, React, Workflow
- Migration and modernization of legacy systems: rewrote C and C++ code in Java to improve maintainability, scalability, and performance. Refactored Python into Java, including optimization and integration into modern architectures.
- Study on the use of AI (Codex) for implementing a Java feature. The goal is to compare the time spent and productivity of AI-supported development with a classic implementation by a developer. The results should show how strongly the use of AI affects development time and efficiency.
- Development of the following tariff calculators for the years 2024/2026: private, companies, doctors, farmers, owner-occupied G + H, landlords, traffic, club, top managers, sales representatives, special criminal law, savings bank, municipal, BayGT, doctors, Dehoga
Max L.
Last position:
Test Analyst (manual testing) – Microsoft Dynamics 365 Business Central (Factoring) at ABC Finanz Bank Köln
- Planning, execution, and documentation of manual tests in the factoring module of Microsoft Dynamics 365 Business Central, supported by AI-based tools for structuring
- Working in an agile project environment with two-week sprint cycles, including sprint planning, review, and QA coordination
- Implementation of progressive and regression test scenarios to cover new and existing functionalities
- Management and tracking of test cases and defects with TestRail and Jira (BAM tickets)
- Test coverage of central factoring processes: contact management, contract card, debtors, limit processes, company groups; payment transactions incl. journal entries, rebooking logic, and comment fields; testing and parameterization of the IKV/WKV components incl. reporting; portal tests in the TAS system (login, user management, feedback functions)
- Support for special modules and interfaces: in-house tiles, factoring dashboard, risk evaluation
- Test status maintenance and retest planning (Passed / Blocked / Partially Passed) in close coordination with business departments
- Quality assurance as part of data migration, including validation, deviation analysis, and follow-up documentation
Christian D.
Last position:
Requirements Engineer at Evangelisches Jugend- und Fürsorgewerk (EJF)
- Document analysis
- Preparation and visualization of results (Excel, PowerPoint)
- Consulting and recommendation for requirements analysis and management
- Presentation and handover
Andreas S.
Last position:
Project Management, Development and Test- (Defect-) Management at safarica.com
- Creation and implementation of a multilingual, relational MariaDB database to reflect the requirements of a booking system designed for safaris in Africa
- Testing the front- and backend functionality, registration of clients and suppliers, the editorial system and the payment workflow
- Defect management and documentation via BugHerd
- Implementation of an automatic internal deployment of deliveries provided by an external company via bash scripts
- Coordination of external companies in the function of a project manager (Stakeholder Management)
Peter B.
Last position:
Data Warehouse Consultant (Development and Analysis) at Atruvia AG
- Developed and enhanced ETL loading jobs with IBM DataStage and optimized SQL in an IBM DB2 environment as part of the Agree21 data migration
- Analyzed data quality and developed test procedures
- Created PowerShell scripts and documented GIT deployment processes
- Technologies: RedHat Linux, IBM DB2 with DBVisualizer, IBM InfoSphere DataStage 11.7, JIRA, TortoiseGIT, TortoiseSVN, PowerShell scripts
Hans L.
Last position:
Requirements Engineer at REWE Systems GmbH
- Gathering requirements from business units and stakeholders
- Organizing and running workshops
- Creating and supporting user stories (from refinement to rollout) and mapping
- Facilitating Scrum ceremonies
- Identifying and analyzing optimization potentials like the REWE Pick&Go app
- Moderation and communication with service providers
- Requirements engineering in connection with external systems
- DWH/BI solution: loyalty reporting with MicroStrategy
- ITIL (framework for IT service delivery)
- Quality assurance (quality gates) based on ISTQB
Kathleen J.
Last position:
Product Owner, Team Lead, Account Manager at Evia Consulting GmbH & Evia Solutions GmbH
- Product responsibility towards clients, point of contact and account manager
- Leading and coordinating development projects carried out with and for these clients, in addition to product development. This included, for example, the technical migration of a purchased company's IT systems into our own systems.
- Responsible for security and operational infrastructure; coordinating external companies handling related tasks.
- Constant exchange with management to ensure alignment of product and company goals.
- Creating product roadmaps and coordinating with software developers.
- Requirements management and user story refinement.
- Coordinating cross-team work. In addition to my own team, seven other teams worked in the immediate environment.
- Interface management with point-of-sale systems in stores, webshop, and external providers.
- Customer support by providing reports on voucher issuance and redemption, as well as business-relevant reporting for annual financial statements and reserves.
- Participated in the rollout of a new webshop platform in the Netherlands, Belgium, Germany, and Italy, including integrating my products and implementing country-specific custom requirements.
- Team lead: First point of contact for all matters related to software developers.
- Over a period of 1.5 years, took on Scrum Master tasks: removing impediments, preparing and conducting retrospectives, facilitating all Scrum meetings.
- Aligning team work to achieve sprint goals; principle "Outcome over output".
- Restructuring a large team into two smaller Scrum teams.
- Developing team identity, defining vision, mission, and purpose.
- Planning, conducting, and facilitating all Scrum events (review, retrospective, planning).
- Coordinating the takeover of data from third-party systems after company merger.
- Implementing new reporting.
- Early detection of fraud cases; rapid development of sustainable countermeasures in collaboration with software developers.
- Drafting concepts for microservices in an environment of eight development teams; aligning services with business domains.
Atef A.
Last position:
System, load, acceptance and performance testing and QA manager for banking systems
- Test concept, planning and execution
- Coordination of the different test phases
- Project planning within the team, design of the structure and test strategy
- Coordination and review of test activity execution and deviation management
- Derivation of test cases for newly developed features with respect to functional and non-functional requirements and subject matter
- Participation in status meetings
- Documentation of technical components
- Description of the qualitative and quantitative goals of the test measures
- Definition of testable acceptance criteria
- Screening of new and existing customers for negative information
- Evaluation of information and decision on whether a business relationship is still possible
- Assessment of negative information regarding sanction or terror lists
- Assessment of whether individuals have a criminal record or are politically exposed
- Continuous Integration and quality assurance (QA)
- Description of using various testing methods and approaches (static/dynamic tests, functional/non-functional tests, black-/white-box tests)
- Execution of manual and automated tests
- Fixing errors from the testing phases in applications/components
- Integration of test management in the introduction, establishment and expansion of test automation
- Creation of system test documentation
- Reporting risks and issues to technical architects and project management
- Definition of requirements for the test infrastructure
- IT system environment: Windows, SAP, Perl, C, Git, Cloud, Oracle, JavaEE, C#, SOA, XML, JavaScript, HTML5, Angular, JBoss, UML, Linux, Jira, Robot Framework, TypeScript, Python, JMeter, Tosca, Selenium, DWH, AWS Cloud, Doors
Robert M.
Last position:
Backend Developer at Payment Backend
- Integration of partner systems in the payment and credit card environment.
- Development, deployment, and monitoring in a large system landscape.
- Use of a wide range of customer-specific frameworks and tools.
Matthias S.
Last position:
IBM InfoSphere DataStage Senior Consultant at KKH (Kaufmännische Krankenkasse Hannover)
- Data migration from BVS to BITMARCK 21c|ng
- Test case creation; test execution and result analysis of the ETL processes
- Consulting on detailed planning and test execution
- Job review
- Development
- Documentation
- Error analysis & fixing / new development
- System environment: Windows 10; IBM InfoSphere DataStage 11.7.x; IBM DB2 z/OS; IBM DB2 LUW; PL/SQL; SQL; DBeaver 25.x; MS Office 365; Atlassian JIRA
Discover over 15,000 top freelancers
Statistics of experts using SQuirreL SQL
Aggregated from the professional profiles of matched freelancers.
Experience
28 years
Position duration
2 years
Positions per freelancer
20
Top business areas
Information Technology, Quality Assurance, Product Development
Top industries
Information Technology, Banking and Finance, Insurance
Certification focus areas
Project Management, Information Technology, Product Development
Bachelor's degree or higher
77%
Master's degree or higher
62%
Doctorate
8%
Certifications per freelancer
3
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 SQuirreL 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 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
SQuirreL 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 (95%)
- Banking and Finance (84%)
- Insurance (53%)
- Media and Entertainment (53%)
- Automotive (47%)
- Transportation (47%)
- Professional Services (47%)
- Government and Administration (47%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Universal Database Administration with SQuirreL SQL
SQuirreL SQL Client is a graphical Java-based tool designed to inspect and manage relational databases using JDBC drivers. It provides a single interface to query systems like Oracle, PostgreSQL, MySQL, Microsoft SQL Server, and IBM DB2. Database professionals rely on it for cross-platform data exploration.
Core Capabilities and Everyday Workflows
- Setting up and tuning JDBC connections across heterogeneous database engines
- Writing, profiling, and executing complex SQL queries with syntax highlighting
- Inspecting table structures, constraints, indexes, and schema foreign keys
- Exporting query outputs into standard formats like CSV, XML, and Excel
- Editing live table contents safely in non-production enterprise staging environments
The Ecosystem and Extensibility Architecture
The tool relies on the Java Virtual Machine and modular plugins to expand functionality. Specialists utilize dedicated plugins for graph generation, SQL script generation, session bookmarks, and specific engine syntax support. Its driver cache architecture enables unified access to modern cloud databases and on-premise relational engines alike.
Driving Complex Legacy and Migration Projects in Germany
Enterprise architectures across Germany often maintain hybrid systems where legacy databases coexist with modern data warehouses. Specialists use the client during massive ERP overhauls, core banking updates, and industrial telemetry consolidations. Its vendor-neutral design makes it ideal for comparative data audits during system cutovers.
When Organizations Need Specialist Support
- Diagnosing connectivity faults across secured enterprise firewalls and legacy JDBC drivers
- Standardizing query environments across distributed, heterogeneous server setups
- Automating schema analysis across older proprietary relational databases
- Transitioning critical table structures from deprecated database versions to cloud services
Hallmarks of Seasoned Database Specialists
Top specialists combine deep relational theory with practical JVM runtime tuning. They configure custom connection pools, navigate TLS handshakes across distinct operating environments, and pinpoint driver-level bottlenecks. Their work ensures teams access, analyze, and migrate core business records without vendor lock-in.
Frequently asked questions
The facts hiring teams ask for most often when it comes to SQuirreL SQL.
Organizations use SQuirreL SQL Client as a unified graphical workspace to manage multiple relational database engines through JDBC. Specialists leverage it for ad-hoc schema inspection, SQL development, data exports, and debugging connection issues across distinct environments.
While tools like DBeaver and DataGrip provide modern interfaces, SQuirreL SQL is a lightweight, open-source Java application that runs reliably in constrained environments without steep licensing costs. Many enterprises in Germany continue using it for long-standing batch processes, internal jump hosts, and standardized legacy workflows.
A qualified professional working with SQuirreL SQL must demonstrate strong knowledge of JDBC driver setup, Java runtime options, and cross-dialect SQL syntax. They should also possess deep familiarity with underlying relational engines, index optimization, and secure network tunneling like SSH.
Yes, SQuirreL SQL can communicate with modern cloud databases such as Amazon Aurora, Google Cloud SQL, and Azure SQL as long as a valid JDBC driver exists. Specialists configure secure SSL parameters and network authentication to query these cloud resources safely.
While technical configuration and SQL scripts rely on English, many mid-sized German industrial and financial enterprises require German language skills for sprint meetings, schema documentation, and operational sign-offs. Remote projects often accept English, whereas hybrid roles in Germany usually favor bilingual professionals.
Assess how smoothly they handle JDBC driver incompatibilities, memory constraints during large data exports, and multi-dialect schema synchronization. A strong SQuirreL SQL specialist can immediately isolate driver-level communication errors from database engine constraints.
Hiring a freelance specialist who uses SQuirreL SQL delivers immediate productivity during complex data migration or audit deadlines. These specialists already know driver configuration intricacies, preventing prolonged project stalls and connection errors.
Yes, specialists frequently access SQuirreL SQL remotely over secure VPNs or enterprise bastion hosts. This setup enables companies in Germany to collaborate seamlessly with remote freelancers while enforcing strict internal access policies.
The average hourly rate of freelancers in Germany who have used SQuirreL SQL in their recent projects is 88 €, which corresponds to a daily rate of about 701 € based on an 8-hour working day.
Of the freelancers in Germany who have used SQuirreL SQL in their recent projects, 77% hold at least a Bachelor's degree, 62% hold at least a Master's degree, and 8% hold a doctorate.
On average, freelancers in Germany who have used SQuirreL SQL in their recent projects have 28 years of professional experience, with a single engagement typically lasting around 2 years.
The most common languages among freelancers in Germany who have used SQuirreL SQL in their recent projects are German (100%), English (95%), and French (42%).
The most common industries among freelancers in Germany who have used SQuirreL SQL in their recent projects are Information Technology (95%), Banking and Finance (84%), and Insurance (53%).
The most common business areas among freelancers in Germany who have used SQuirreL SQL in their recent projects are Information Technology (95%), Quality Assurance (95%), and Product Development (84%).
Main locations of FRATCH Experts, who have recently used SQuirreL 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 Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
