PostgreSQL Experts in Essen
with precise AI matching, from over 15,000 CVsHire experts who design reliable relational data models, tune complex queries and manage PostgreSQL in cloud or on-premise environments. FRATCH matches you quickly with vetted, available freelancers suited to your technical needs.
Meet FRATCH Experts in Essen, who have recently used PostgreSQL
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
Fadi S.
Last position:
Development of a production-ready Enterprise Document AI & Recommendation Platform at Freelancer
- Development of a production-ready Enterprise AI solution for the automated processing of invoices and business documents
- Integration of Azure AI Document Intelligence and LLM technologies into existing business processes
- Development of robust REST APIs for automated document processing and system integration
- Extraction, validation, and storage of structured invoice data in Azure SQL as a base for analytics and machine learning models
- Development of an AI-based recommendation engine with machine learning and deep learning to generate personalized product recommendations based on historical purchase data
- Implementation of logging, monitoring, error handling, and validation mechanisms for stable production use
- Collaboration with business teams to define business rules and integrate the solution into existing enterprise processes
Technologies: Python, Azure AI Document Intelligence, Azure OpenAI, Azure SQL Database, REST APIs, Machine Learning, Deep Learning, OCR, Pandas, JSON, Workflow Automation
Boris S.
Last position:
Generalist expert for software development at Mercor
- Training AI models, evaluating images and text UI/UX, turning the provided data into insights through OpenAI Feather as part of the machine learning workflow
Technologies: OpenAI Feather
Daniel A.
Last position:
Sales Development Representative (SDR) at TenderFlow GmbH
- Acquires new B2B customers for an AI SaaS startup in the public tendering space and books product demos with IT decision-makers.
- Qualifies target customers based on a defined ideal customer profile, including discovery, needs analysis, and objection handling.
- Builds domain knowledge in public procurement (EVB-IT, German and EU procurement portals) for conversations on equal footing.
Sarvesh L.
Last position:
Data Analytics for Renewable Energy Integration at Harz University
- Created data pipelines and visualization tools to support sustainable energy decision-making
- Developed insights that could optimize renewable energy deployment and grid integration strategies
Laurin H.
Last position:
Software Architect (Freelance) at Care4Sure
- Delivered MVP-focused full-stack architecture for a health-sector client: Vite/React frontend, backend services on Google Cloud Run, and Supabase for database plus IAM/authentication.
- Supported product requirements engineering and prioritized cost-aware workload placement, implementing browser-side/edge computation where feasible before moving logic to backend services.
Saruna M.
Last position:
Master's Thesis at Heinrich Heine Universität
- Title: Enhancing Syntactic Awareness in Transformer Language Models for Hindi Dependency Parsing
- Investigated syntactic knowledge captured by transformer language models (RoBERTa, XLM-RoBERTa) for Hindi dependency parsing, a morphologically rich and low-resource language.
- Developed structure-aware model variants (Struct_Roberta_hi, Struct_XLMR) by integrating a CNN-based parser network between transformer layers, inspired by the StructFormer architecture.
- Conducted extensive error analysis including label-wise, distance-based, direction-based, sentence length-based, and LVC/Non-LVC evaluations.
- Evaluated models on downstream NLP tasks (NER, POS tagging) using the IndicXTREME benchmark.
Anupriya P.
Last position:
Senior Software Engineer at Telefonica Germany
(Maternity/Parental Leave: July 2023 – Aug 2024)
- Domain: Payment Domain | Client: Telefonica Germany
- Project: General Payment Service
The General Payment Service is responsible for processing of online payments via external payment service provider like Safer pay and PayPal
- Developed Design of Use (DOU) and interface contract documentation, ensuring clarity and compliance across system integrations
- Designed and delivered REST/SOAP web services with Spring Boot and Spring Data JPA, publishing Swagger contracts through WSO2 API Gateway to improve accessibility and governance.
- Spearheaded the on-premises to AWS Cloud migration, re-platforming from Oracle to PostgreSQL on AWS RDS and deploying services on EC2, improving scalability and cost efficiency.
- Containerized microservices using Docker and orchestrated deployments with Kubernetes, streamlining deployment pipelines and improving system reliability.
- Implemented proactive monitoring and logging via AWS CloudWatch and Kibana, ensuring stability and performance during cutover.
- Enhanced collaboration through code reviews and peer reviews, promoting maintainability and clean coding standards.
- Strengthened quality by writing comprehensive JUnit tests and preparing detailed test cases enabling early defect detection
- Delivered automated API testing with Ready API, Postman, and SOAPUI, and conducted performance testing with JMeter, ensuring reliability in high-transaction environments.
Celil U.
Last position:
ZÜRS Geo 2021 at adesso SE
- Frontend development
- Spring Boot
- Swagger
- Git
- GitLab
- SonarQube
- Docker
- Maven
- Java
- Angular
Adem S.
Last position:
IT Consultant (Test Manager) & CEO at Trikolon Consulting GmbH
- Development and implementation of test concepts for complex, multi-layered systems
- Creation of regular management reports and presentations for stakeholders and clients
- Technical and disciplinary leadership of international test teams (coordination, coaching, resource planning)
- Responsibility for quality assurance across multiple test levels (unit, integration, system, and acceptance tests)
- Design of test cases and test plans in Azure DevOps; ensuring traceability and coverage
- Use of BDD approaches (Gherkin/Cucumber) to prepare test automation
- Building a test automation architecture with Playwright and integrating new tests into CI/CD pipelines
- Performing API tests (REST) and tests for mobile/PWA applications
- Setup and maintenance of test environments across multiple stages (integration, QA, UAT, pre-production)
- Test data management (synthetic and production-like data), ensuring consistency and reproducibility
- Collaboration with DevOps teams for containerization (Docker/OpenShift) and CI/CD integration
- Working under SAFe & Scrum, closely coordinating with product owners and DevOps teams
- Active participation in PI plannings, sprint reviews, and retrospectives
- Promoting an agile QA culture through coaching and knowledge sharing
- Introducing scalable test automation with Playwright → significant reduction of manual testing efforts
- Increasing test transparency through clean defect and reporting management in Azure DevOps
- Improved release quality through an end-to-end QA strategy and automated regression tests
- Strategic leadership of Trikolon Consulting GmbH and responsibility for finance, personnel, and business development
Asım Y.
Last position:
Freelance BI/DWH/ETL Specialist at Akbank
- Setting architectural standards for Informatica Power Center development teams
- Maintenance-performance-health for DWH (Exadata) environments
- Qlik Sense / BO reports architectural standards
- Implementing best practices in ETL tasks
- Documentation ETL standards on Confluence
- Dynamic Data Masking rules for GDPR/KVKK regulations by using Informatica DDM tool
- DWH Data model Power Designer
- Upgrade Qlik Sense versions
- Merge all Informatica server's repository databases on one Oracle DB
Felix M.
Last position:
AI Trainer at AKIA Academy for AI & Automation
- Led the 12-week training program to become an AI and automation specialist
- Created training materials & video courses on "AI Fundamentals", "Working with ChatGPT", "Prompt Engineering", "AI Agents with N8N", "Automations with Make.com" & AI-generated marketing content (images, videos, blog posts & social media posts)
- Conducted workshops on the above topics
- Tools: Loom, N8N, Make.com, ChatGPT, Midjourney, Gamma.app, Canva, Kling AI, Magnific AI
- Result: Participants learn the technical and business know-how to successfully build a business as AI and automation specialists
Gernot L.
Last position:
Founder and Managing Director at Softwerk/Ruhr GmbH
- Architecting and developing SaaS platform for graphical definition and execution of pandas data processing pipelines
- Developed POlyglott, an open-source Python CLI tool for translation workflow management featuring PO file parsing, quality linting with glossary enforcement, and DeepL API integration for machine translation
- Developed web application for material compliance management (EU REACH) using Django and modern web technologies
- Built automated infrastructure platform using Proxmox, Terraform, and Ansible — VM provisioning, configuration management, internal DNS, and fleet-wide security hardening across multiple subnets
Andreas A.
Last position:
IT-Application Manager at IHK-GfI
- Gathering, analyzing, specifying, and prioritizing requirements for the 'Archive and Delete' module of the Chambers of Industry and Commerce in a Scrum team
- Capturing and specifying screen/form designs, functionality, and data types in Confluence, as well as creating user stories in Jira
- Preparing PowerPoint presentations for the 'Archive and Delete' module
- Coordinating and supporting the Chambers of Industry and Commerce in the implementation of the module
- Writing SQL scripts for an Oracle database
- Technologies used: Scrum, Confluence, Jira, MS Office, Postman, JavaScript, REST API, JSON, DBVisualizer, SQL
Ateet B.
Last position:
AI Engineer at MASX AI
Strategic transition into AI Engineering through intensive mentoring and project execution.
Developed MASX AI, an agentic AI platform integrating LangGraph, AutoGen, and RAG for geopolitical forecasting and real-time ETL.
Designed and delivered functional AI prototypes for prospective clients showcasing applied expertise in multi-agent systems, real-time data pipelines, and LLM integrations.
Discover over 15,000 top freelancers
Statistics of experts using PostgreSQL
Aggregated from the professional profiles of matched freelancers.
Experience
14 years (Germany: 17 years)
Position duration
1.9 years (Germany: 5.1 years)
Positions per freelancer
10 (Germany: 12)
Top business areas
Information Technology, Product Development, Operations
Top industries
Information Technology, Banking and Finance, Education
Certification focus areas
Project Management, Information Technology, Product Development
Bachelor's degree or higher
95% (Germany: 91%)
Master's degree or higher
79% (Germany: 59%)
Certifications per freelancer
3 (Germany: 2)
Most common languages
German, English, Spanish
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 Essen 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.
Discover detailed PostgreSQL rate benchmarks:
Explore rate insightsAverage rates of experts in Essen using PostgreSQL
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.
PostgreSQL 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 (100%)
- Banking and Finance (60%)
- Education (45%)
- Healthcare (40%)
- Professional Services (40%)
- Government and Administration (35%)
- Automotive (30%)
- Construction (30%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Relational foundation
PostgreSQL is an open-source object-relational database used for transactional systems, business applications, analytics services and data-heavy platforms. It combines SQL standards with strong consistency, extensibility and support for structured and semi-structured data. Teams choose it when data integrity and long-term flexibility matter.
Systems and use cases
PostgreSQL supports a wide range of workloads, from customer portals to internal operations and financial processes.
- Design schemas for transactional web and mobile applications
- Build reporting, analytics and geospatial data services
- Migrate databases from proprietary or legacy systems
- Support APIs, microservices and event-driven applications
Ecosystem and tooling
Strong PostgreSQL specialists work across SQL, indexing, transactions, replication and backup strategy. They may use extensions such as PostGIS, pgvector or Timescale, together with tools such as pgAdmin, psql, Flyway and Liquibase. Experience with Docker, Kubernetes, Terraform and managed cloud database services often supports the surrounding delivery work.
When expertise matters
Companies bring in freelance PostgreSQL expertise when performance problems, schema changes or migration risks exceed the capacity of the internal team. Typical signals include slow queries, unreliable backups, unclear ownership of production data or a planned move from another database. In Essen, specialists may support local teams on site, remotely or through a hybrid setup, depending on security and collaboration needs.
- Review query plans and improve indexes
- Plan high-availability and disaster-recovery measures
- Set up monitoring, access controls and operational runbooks
Delivery responsibilities
A PostgreSQL professional can turn application requirements into a maintainable data model, define migration paths and document decisions for the wider team. The work may include stored procedures, partitioning, connection pooling, replication, logical decoding and integration with application frameworks. Clear communication in English or German can help distributed teams in Essen collaborate effectively.
Signs of quality
Strong specialists explain trade-offs instead of applying generic tuning advice. They test changes against realistic workloads, protect data during migrations and distinguish application issues from database constraints. Look for practical experience with observability, incident response, version upgrades and secure handling of production access, not only familiarity with SQL syntax.
Frequently asked questions
Questions about PostgreSQL? Start with the answers below.
PostgreSQL is used for reliable transactional applications, APIs, reporting systems, geospatial services and data platforms. Its extensible design also supports specialized workloads through extensions such as PostGIS and pgvector.
PostgreSQL generally offers broader SQL functionality, advanced data types and strong extensibility, while MySQL is also widely used for web applications and can be a good fit for simpler workloads. The right choice depends on query complexity, operational requirements, existing skills and application compatibility.
A strong PostgreSQL specialist usually understands Linux, SQL performance analysis, backup and recovery, security and monitoring. Experience with application frameworks, Docker, Kubernetes, cloud database services or infrastructure as code can be important when the database is part of a larger delivery environment.
The required PostgreSQL experience depends on the workload and risk. A straightforward schema or reporting task may need focused database expertise, while migrations, replication, high availability and production performance work call for a professional who has handled those situations in practice.
PostgreSQL work is often suitable for remote collaboration because schema reviews, query analysis and infrastructure changes can be managed through secure development workflows. Essen-based companies should still define access controls, documentation standards and whether occasional on-site sessions or German-language communication are needed.
PostgreSQL is often the stronger choice when relationships, transactions, constraints and flexible SQL queries are central to the product. A NoSQL option may suit highly specialized access patterns or schema models, but the decision should follow the data relationships and consistency needs rather than a general preference.
Ask a PostgreSQL professional to explain a past performance investigation, migration or recovery plan in concrete terms. Good answers cover query plans, indexes, locking, backups, monitoring, testing and rollback options, and connect each recommendation to the workload rather than promising universal fixes.
PostgreSQL projects in Essen may involve software products, industrial operations, logistics, services or internal business systems. Professionals should clarify data sensitivity, deployment constraints, language expectations and on-site requirements early, while showing how they document database decisions for both technical and non-technical stakeholders.
The average hourly rate of freelancers in Essen, Germany who have used PostgreSQL in their recent projects is 85 €, which corresponds to a daily rate of about 677 € based on an 8-hour working day.
Of the freelancers in Essen, Germany who have used PostgreSQL in their recent projects, 95% hold at least a Bachelor's degree and 79% hold at least a Master's degree.
On average, freelancers in Essen, Germany who have used PostgreSQL in their recent projects have 14 years of professional experience, with a single engagement typically lasting around 1.9 years.
The most common languages among freelancers in Essen, Germany who have used PostgreSQL in their recent projects are German (100%), English (100%), and Spanish (15%).
The most common industries among freelancers in Essen, Germany who have used PostgreSQL in their recent projects are Information Technology (100%), Banking and Finance (60%), and Education (45%).
The most common business areas among freelancers in Essen, Germany who have used PostgreSQL in their recent projects are Information Technology (95%), Product Development (95%), and Operations (55%).
Main locations of FRATCH Experts, who have recently used PostgreSQL
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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FRATCH CEO
