PostgreSQL Experts in Hanover
, matched in minutes from over 15,000 CVs with the power of AIHire experts who design relational data models, tune complex queries and build secure PostgreSQL integrations for web applications, analytics systems and business platforms. FRATCH connects you with vetted, available freelancers through fast, precise AI matching.
Meet FRATCH Experts in Hanover, who have recently used PostgreSQL
Michael S.
Last position:
Data Scientist at CompuGroup Medical Deutschland AG, docmetric GmbH
Development of AI-based and classical models for analyzing medical and patient data, including medication analyses, diagnosis analyses, forecasts, procedure analyses, dosage analyses, comorbidity analyses, prescription analyses, patient potential analyses, and referral profile analyses. Analyses in the area of Real World Evidence.
- Gathering customer requirements
- Planning the subproject
- Designing and defining KPIs
- Designing and developing models and visualizations of the results using customer dashboards
- Developing and implementing DWH adjustments
- Deriving recommendations for action
Methods, technologies: Simulation, Artificial Intelligence, Python, R, SQL, Microsoft Power BI, Amazon Web Services, Elasticsearch, PostgreSQL, Databricks, Multivariate Statistics
Shweta S.
Last position:
Java Developer (Working Student to Intern) at Nord LB
- Took ownership of the full development lifecycle for various features, from design through coding, debugging, and production deployment, ensuring compliance with banking-grade reliability standards.
- Optimized SQL queries, reducing data-processing time by up to 50%, especially for large datasets handled.
- Developed and maintained automated tests using JUnit and Mockito.
- Utilized GitHub Copilot as an AI-assisted development tool to accelerate code generation, improve code quality, and increase development efficiency within the team.
- Resolved 90% of assigned production issues independently, often under tight deadlines, contributing to uninterrupted system availability.
Dennis S.
Last position:
Lead Full Stack at Self-employed
- Billing software for the second-highest security authority of the Federal Republic of Germany
- Passed security clearance level 2
- Frontend and backend development
- Consulting on the introduction, design, implementation, and development of technical components
- Code reviews, component testing, module testing, group module testing
- Implementation of UI/UX design
- Used technologies: HTML, CSS/SCSS, JavaScript, Node.js, Vue 3, PrimeVue, Webpack, Vuex, Momentum, Jest, NPM, Lodash, Java 17, Spring Boot, Lombok, GraphQL, JUnit, Maven, Keycloak, Python, Docker, CI/CD, Kubernetes, Oracle SQL, Postman, Storybook, Microservices, Monorepo, Jira, Confluence, Scrum, GitLab, AWS, IntelliJ, Visual Studio Code, Neovim, XLSX, responsive Webdesign, BITV 2.0 (U.S. Section 508) / WCAG 2.2
Martin S.
Last position:
MS Fabric Certification
MS Fabric certification with creation of pipelines and notebooks in Fabric using data from Azure, Azure Repos, Azure Boards, and GitHub. Data ingestion via OneLake Explorer, direct IP connection, and API (REST) are the main topics
Kristof B.
Last position:
Strategic Consulting at German Grid-Battery Storage Provider
- Consulted on IT security and process optimization, focusing on NIS2 and risk requirements
- Troubleshot and optimized plant core networks using STP, certified hardware, and open-source components such as OPNsense
- Redesigned network segmentation for VLAN rollout in a hybrid multisite multicloud setup using Tailscale VPN
- Facilitated cross-departmental discussions to align technical and social requirements
- Optimized monitoring with Grafana, Telegraf, and SNMP configurations
- Prototyped network setup for a new plant, including VLAN separation with Tailscale VPN
- Automated various scenarios using Python and Bash scripting
Bastian B.
Last position:
Backend Developer at SupplyOn AG
In this project, I support the software development of various modules of the supply chain management solution. My responsibilities include the technical implementation and optimization of collaborative SCM processes that help companies make their supply chains more efficient, transparent, and resilient. This modular software platform facilitates communication and Collaboration with suppliers is standardized and digitized, enabling seamless traceability of quality data and supplier evaluations. Technically, I focus on development with Go/Golang for scalable backend services and on the use of Kafka for real-time messaging and event processing. I design and extend GraphQL interfaces for efficient data communication between microservices and support automated build and deployment management using Docker and Gitlab CI/CD pipelines. Data is stored in the modules I work on using a PostgreSQL database.
Technical focus: Go/Golang, Kafka, GraphQL, Docker, Gitlab, CI/CD, DevOps, PostgreSQL, JIRA, Miro
Torsten G.
Last position:
Data Vault with Informatica on Oracle at SEFE
- Data Vault modeling and performance improvements in Oracle.
- Requirements process with model-driven Data Vault automation.
- Preparation of business requirements for the price database in the gas and electricity market.
- Sales performance based on Salesforce CRM.
- Tasks: Concept and development.
- Tools used: Informatica, Oracle, DBT, Docker, DataOps, Airflow Workflow, Python Ingestion, Gitlab CI.
Friedhelm M.
Last position:
Project at Deutsche Gesetzliche Unfallversicherung
- Collaborated on HL7 FHIR profiling and validation
- Created CodableConcepts (code/value systems), extensions and profiles like Composition and Bundle
- Extensive instance creation and validation
- Used Simplifier.net, Forge and the FHIR Java Validator
Mei-Fang C.
Last position:
Medical Consultant at Atheneum
- Provided expert consultation by analyzing clinical and market data for 20+ cases, driving data-driven pipeline decisions that optimized R&D prioritization and accelerated project timelines.
- Advised on reimbursement pathways and pricing for critical medicines, aligning clinical data with payer expectations.
Maximilian M.
Last position:
Test Data Creation and Management at statutory accident insurance
- Provision of cross-system synthetic test data for test automation for insured persons, companies and external partners in coordination with specialist departments and stakeholders, taking requirements and test cases into account
- Synthesis of test data with regard to data protection and data security
Marvin W.
Last position:
PACS Senior IT Project Manager at Fraport / ID Engineering
- Took a leading role integrating NECT Ident and NECT Sign (AI-based solutions for identity verification and electronic signature) into ID Engineering's PostgreSQL PACS (Physical Access Control System) used at Fraport.
- Analyzed system architecture and interfaces, and implemented Microsoft Azure REST API integrations for legally compliant identity verification and signature.
- Developed and implemented security-critical workflows in Visual Studio Code to seamlessly embed NECT processes into existing PACS Mulesoft Anypoint Platform™ structures.
- Contributed to the evolution of the airport security architecture by linking identity verification, ID management, and physical access control with Microsoft Power BI.
- Collaborated closely with NECT and internal IT teams on API configuration, testing, and production rollout.
Frank N.
Last position:
Developer at In-house development of the HAPPYLIST web application
- Fully developed a CRM system for contact management in network marketing
- Enabled configuration of tags, custom reminders, birthday reminders and more
- Application is productive
- Technologies and methods: Trello, Python, Django, Rest-Framework, Bootstrap, PostgreSQL
Matthias V.
Last position:
Managing Partner at IT consulting firm
Discover over 15,000 top freelancers
Statistics of experts using PostgreSQL
Aggregated from the professional profiles of matched freelancers.
Experience
22 years (Germany: 17 years)
Position duration
3.3 years (Germany: 5.1 years)
Positions per freelancer
17 (Germany: 12)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Healthcare, Automotive
Certification focus areas
Information Technology, Business Intelligence, Operations
Bachelor's degree or higher
70% (Germany: 91%)
Master's degree or higher
60% (Germany: 59%)
Doctorate
30% (Germany: 7%)
Certifications per freelancer
2
Most common languages
German, English, French
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 Hanover 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 Hanover 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 (92%)
- Healthcare (62%)
- Automotive (54%)
- Insurance (54%)
- Banking and Finance (46%)
- Manufacturing (46%)
- Professional Services (46%)
- Government and Administration (46%)
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 for applications that need reliable transactions, structured data and advanced querying. Often called Postgres, it supports complex relationships, strong data integrity and extensible features without locking a company into a proprietary database vendor.
What it builds
Companies use PostgreSQL as the core data layer for customer platforms, commerce systems, financial workflows, content services and operational analytics. It can support transactional applications as well as geospatial data, event records and reporting workloads when the schema and workload are designed carefully.
- Model normalized and business-critical data
- Create APIs, integrations and reporting queries
- Support multi-tenant applications and data migrations
- Store JSON, geographic and full-text search data
Ecosystem and tooling
Strong PostgreSQL work includes SQL, indexing, transactions, constraints and query planning. Specialists commonly work with extensions such as PostGIS, migration tools, backup and replication workflows, and application frameworks using drivers for Python, Java, Go, JavaScript or Ruby. Managed services and containerized deployments also require sound operational judgment.
When expertise matters
Companies bring in freelance PostgreSQL expertise when a database has become slow, difficult to change or risky to operate. This is useful during a migration from MySQL or Microsoft SQL Server, a redesign of an overloaded schema, a move to managed infrastructure or an audit of backup and recovery practices. In Hanover, remote collaboration can also complement on-site product and operations teams.
- Query latency remains hard to explain
- Schema changes threaten live workloads
- Replication, backups or failover need review
- Data growth exposes weak indexing decisions
Quality signals
A capable professional explains trade-offs instead of adding indexes by habit. They inspect execution plans, test realistic workloads and protect data with constraints, transactions, least-privilege access and recoverable backups. Clear migration plans, documented assumptions and measurable acceptance criteria distinguish dependable PostgreSQL work from quick fixes.
Delivery and collaboration
Effective projects define ownership of the schema, deployment process and operational alerts early. Specialists should be comfortable reviewing existing SQL, working with product and application teams, and explaining database risks in clear language. For Hanover-based companies, German or English collaboration can be agreed around the team’s documentation and meeting needs.
Frequently asked questions
Questions about PostgreSQL? Start with the answers below.
PostgreSQL is used as the primary database for transactional web applications, business systems, APIs and analytics workflows. It handles structured relational data, complex queries, JSON documents, geographic information and full-text search through its core features and extensions.
PostgreSQL is often chosen for its standards-oriented SQL, rich data types, extensibility and strong support for complex queries. MySQL may suit simpler read-heavy applications, while Microsoft SQL Server can be a natural fit for organizations centered on Microsoft tooling; the right choice depends on workload, team skills and operating constraints.
A strong PostgreSQL specialist should understand application data access, SQL migrations, Linux or cloud operations, monitoring, backups and security. Experience with API design, containerization and a relevant language ecosystem helps connect database decisions to the wider product.
The required depth depends on the risk and scope of the work. A schema review or query improvement needs strong SQL and database reasoning, while a high-availability migration also calls for replication, recovery testing, deployment automation and careful change management.
PostgreSQL work is often suitable for remote collaboration because schema reviews, query analysis, migrations and documentation can be performed through shared repositories and secure environments. Hanover-based teams should define access controls, meeting routines and whether occasional on-site sessions are needed.
Bring in a PostgreSQL freelancer when slow queries, unsafe schema changes, unreliable backups or unclear ownership are blocking delivery. An external specialist can assess the current design, prioritize risks and leave the internal team with documented decisions and repeatable procedures.
Ask for concrete reasoning around execution plans, indexes, constraints, transactions and recovery. High-quality PostgreSQL work includes tests against realistic data, reversible migrations, documented trade-offs and evidence that performance and reliability goals are met.
PostgreSQL combines dependable relational transactions with extensibility for JSON, geospatial data, search and specialized workloads. Its broad language support and availability across self-managed and managed environments make it practical for teams that want control without giving up familiar application tooling.
The average hourly rate of freelancers in Hanover, Germany who have used PostgreSQL in their recent projects is 101 €, which corresponds to a daily rate of about 804 € based on an 8-hour working day.
Of the freelancers in Hanover, Germany who have used PostgreSQL in their recent projects, 70% hold at least a Bachelor's degree, 60% hold at least a Master's degree, and 30% hold a doctorate.
On average, freelancers in Hanover, Germany who have used PostgreSQL in their recent projects have 22 years of professional experience, with a single engagement typically lasting around 3.3 years.
The most common languages among freelancers in Hanover, Germany who have used PostgreSQL in their recent projects are German (100%), English (100%), and French (31%).
The most common industries among freelancers in Hanover, Germany who have used PostgreSQL in their recent projects are Information Technology (92%), Healthcare (62%), and Automotive (54%).
The most common business areas among freelancers in Hanover, Germany who have used PostgreSQL in their recent projects are Information Technology (92%), Product Development (85%), and Quality Assurance (77%).
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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Hamburg 
Munich 
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Frankfurt 
Stuttgart 
Dusseldorf 
Leipzig 
Dortmund 
Essen 
Dresden 
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