Azure Cosmos DB Experts in Germany
in minutes from over 15,000 CVs with the power of AI.Hire experts who design Cosmos DB data models, tune partitioning and indexing, and build low-latency applications across SQL API, MongoDB API, and change feed patterns. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used Azure Cosmos DB
Niklas Witzel
Last position:
AI Engineer at Tensora GmbH
- Designed and developed a multi-tenant SaaS platform enabling organizations to build their own knowledge bases and chat with brand-customized AI assistants (white-label approach with dynamic branding per organization).
- Implemented a scalable RAG architecture with a GPT-4o tool-use loop, hybrid semantic search, and strict tenant isolation at database and search index level.
- Built persistent, project-like chat sessions including a streaming API (SSE), multilingual support, and speech input/output (STT/TTS).
- Delivered the cloud infrastructure as Infrastructure-as-Code, fully automated per-customer CI/CD pipelines, and an onboarding process for new tenants.
Technologies used: Python, FastAPI, Pydantic (v2 noted), Next.js, React, TypeScript, Tailwind CSS, OpenAI / LLMs (GPT-4o), Azure AI Search, Cosmos DB, Azure Blob Storage, Azure Cognitive Services Speech, Azure App Service, Azure Container Registry, Retrieval-Augmented Generation (RAG), Server-Sent Events (SSE), Docker, Terraform, GitHub Actions, REST, OpenID Connect (OIDC), Multi-Tenancy
Panagiotis Tsafaridis
Last position:
Senior Data Engineer Consultant at GOLDNER GmbH
- Onboarded and conducted comprehensive documentation and system analysis to assess the existing data infrastructure, facilitating rapid integration and collaboration across functional data teams (modelling, processing, reporting).
- Collaboratively defined the architecture and project structure for a central data pipeline repository, including hierarchical standards, knowledge management strategies, and role-specific responsibilities, enhancing maintainability and onboarding speed.
- Evaluated and validated open-source data routing tools (Airbyte, Apache NiFi, Dragster) for ingest and sync requirements in retail analytics, including local benchmarking and error-state testing.
- Led the design and deployment of Airbyte in Kubernetes, creating customized Helm charts, securing secrets handling, and configuring Ingress with TLS and internal DNS routing, ensuring full API and UI accessibility.
- Troubleshot and resolved Ingress controller issues, iterating through multiple stages of debugging and testing, and documented setup and replication steps for scalable reuse.
- Mapped data models to ARTS standard, supporting schema alignment for ERP and reporting use cases, and coordinated review loops to align future data processing logic.
- Drafted strategic 1-pagers comparing MinIO, Pub/Sub, and routing architectures, providing technical guidance for architectural decisions and investment planning.
- Enabled secure access and authentication mechanisms, including initial evaluation for SAML integration, cluster-level configuration reviews, and service annotation improvements.
Wadim Lupejcenko
Last position:
Fullstack Developer at dripwear.app
Development of an iOS app for virtual try-on and outfit suggestions
The goal of the project is to develop a mobile application for personalized, photorealistic outfit suggestions. Users should be able to upload their own photos, try on clothes virtually, and find products that can be bought directly in the generated suggestions.
- Planning and implementation of the onboarding and photo upload in the iOS app
- Development of the mobile application with Expo and React Native
- Implementation of a Hono/Node.js backend for user, product, and generation processes
- Building an asynchronous processing pipeline with BullMQ and Redis
- Connection of PostgreSQL/pgvector and S3 for product, image, and generation data
- Integration of Gemini and OpenAI for outfit generation and image processing
- Implementation of a credit system and integration of RevenueCat
- Integration of Stripe Connect and affiliate product feeds for products that can be bought directly
Label: TypeScript, React Native, Expo, Hono, Node.js, PostgreSQL/pgvector, BullMQ, Redis, S3, Gemini, OpenAI, RevenueCat, Stripe Connect, Docker
Jorge Machado
Last position:
Technical Lead / Fractional CTO at Würth GmbH
I designed and developed an AI-powered multi-tenant platform on Azure that transforms SAP process recordings into technical documentation, presentations and automated tests, processing over 15,000 process recordings for enterprise customers like Würth. I owned the architecture, the production releases and the DevOps setup. I also designed a multi-tenant system with SSO and role-based access on Azure. Implemented an MCP Server with Dynamic OAuth Authentication.
Main Tasks:
- Sprint planning and feature preparation
- Design the multi-tenant platform architecture (FastAPI, SQLAlchemy, PostgreSQL row-level security for tenant isolation)
- Develop AI pipelines with Prefect for transcription (Azure Speech API), document generation and SAP screen-recording analysis (Claude, gpt-4-mini)
- Design and implement an MCP server to expose tenant knowledge to LLM clients (Claude), with async retrieval and reranking
- Implement LLM cost tracking, rate limiting and client pooling for Anthropic/OpenAI/Azure OpenAI endpoints
- Set up CI/CD: Docker images to Azure Container Registry, GitHub Actions, Azure Static Web Apps, Alembic migrations in containers
- Manage production releases and execute live data migrations for enterprise customers
- Define engineering standards and architecture patterns for the team
Environment: Azure / Azure Foundry / Python / FastAPI / Prefect / React / PostgreSQL
Mukund Biradar
Last position:
Voice AI Chatbot - Real-Time Audio Assistant
- ▶ Built real-time voice assistant (STT → LLM → TTS pipeline) benchmarking and evaluating multiple STT providers including faster-whisper and Azure Speech. achieved sub-3s latency, Groq API (Llama 3) with multi-turn memory - directly handling edge cases in dictation, names and passcode recognition.
Lutz Hühnken
Last position:
Fractional CTO, Interim Engineering Manager, Architect at independent
Strategic technology leadership and architecture consulting.
- Fractional CTO & interim management for startups, scale-ups, and enterprises – technical strategy, team building, architecture oversight, and delivery.
- Architecture consulting on cloud-native, distributed, and event-driven systems: reviews, design partnerships, and ongoing advisory.
- Event-driven architecture training – a hands-on 2-day course for engineering teams
- Conference speaker on distributed systems
Ramazan Cinardere
Last position:
Fullstack-/DevOps Engineer at BKA (Federal Criminal Police Office)
Development and further development of an internal platform for managing and providing technical resources, virtual machines, and infrastructure services. The platform supports self-service processes and covers functions that are conceptually comparable to cloud management solutions like Azure or AWS.
- Responsible involvement in the design, development, and implementation of new backend and frontend features
- Hands-on development with Java, Spring Boot, Python, and Angular
- Implementation of REST interfaces, business logic, validations, and integrations into existing system landscapes
- Further development of modern web interfaces with Angular, including connection to backend services
- Participation in architecture and design decisions within the team, especially with regard to scalability, maintainability, and clean interfaces
- Containerization and deployment of applications with Docker, Kubernetes, and Helm
- Support with CI/CD processes and deployment to Kubernetes-based environments
- Work in the environment of vSphere, Broadcom, GitLab CI/CD, ArgoCD, Maven, npm, and NuGet
- Close collaboration with developers, business teams, DevOps, and other technical stakeholders
- Analysis of technical requirements, deriving suitable solutions, and independent implementation in an agile team
- Use of GitHub Copilot to support code generation, refactoring, test case creation, and technical documentation
Methods/ tools/ technologies: Languages & frameworks: Java (21), Spring Boot (4.x), Python, Angular, Robot Framework, Kubernetes, Helm Persistence: PostgreSQL, MongoDB, Hibernate, Liquibase Architecture & communication: REST, gRPC, GraphQL, Apache Kafka, OpenAPI, Microservices, Event Driven, Domain Driven Design Cloud & infrastructure: Terraform, Docker, Rancher, Helm, Ansible Security: OAuth2, MS (Entra ID), web security, Keycloak (extensions for detailed group rights) DevOps: GitLab CI/CD, Ansible, Maven, Gradle, Grafana, Prometheus, Git, GitHub Copilot Testing & QM: JUnit, Robot Framework, automated component and integration tests, E2E tests with Playwright, Testcontainers, EasyMock Methodology & approach: Kanban, JIRA, Confluence, Clean Code
Volker Döch
Last position:
Developer at DV-Consulting und Entwicklung Volker Döch
- New development of a web app to manage and configure counting devices for large events
- Technologies: .NET 10, C#, Blazor, MudBlazor, MySQL, Git
Moritz Freyburger
Last position:
AWS Developer/DevOps Engineer (Energy Trading) at RWE Supply & Trading GmbH
- Further development and partial new development of a distributed cloud application for providing data in energy trading
- Independent implementation of the infrastructure (IaC)
- Creation of automated CI/CD pipelines, containers, REST APIs, and Lambdas
- Continuous cost and performance optimization
- Collaboration in an international Scrum team and with experts in energy trading
- Technologies: C#/ASP.NET Core; EF Core; PostgreSQL; Terraform/AWS CloudFormation; HTTP; REST/Web API; Swagger/OpenAPI; Azure DevOps; Rider; VS Code; git; Docker; AWS (S3, EC2, Fargate, Lambda, Step Functions, Secrets Manager, VPCs, ALB/NLB, RDS, Cloudwatch, AWS CLI, Amazon MQ); Redis; OAuth; OpenID Connect
- Languages: C#; TypeScript; HCL; Docker; Bash; PowerShell; YML; JSON
Hicham Mokhtari
Last position:
Freelance Software Developer at Buhl Data Service GmbH
- Backend development: .Net 8, C#, PostgreSQL, Entity Framework Core, REST Web APIs, Docker, Kubernetes, Kafka, Open API Swagger, Apache Airflow, Resharper, Git, Microservices, SOAP, gRPC, Hangfire, OAuth 2, GraphQL
- Interface development for document processing with SmartFix, Softexpansion and Natif.ai: C#, REST API, Resharper, Git
- Deployment: Azure DevOps YAML, Vanilla Helmchart, Rancher, Kubernetes Cluster, Linux Docker, Windows VM, Python
- Unit tests and integration tests
- Telemetry, Kibana, Grafana, Elastic Search
- Work in a Kanban team of 8 developers, 1 tester and one Product Owner
Ashkan Zadeh
Last position:
Microsoft Azure Senior Data Engineer / Senior Data Scientist at Vattenfall Europe
- Advising on the use of analytics and BI tools and services in the Microsoft Azure stack (e.g. MS Fabric, Synapse Workspaces and dedicated SQL pools, SQL Database, PostgreSQL, Snowflake, Databricks, Data Factory, SSIS, Analysis Services, Function Apps, Power BI, ML)
- Independently designing analytics solutions with Python, SQL, etc.
- Designing and implementing ETLs and data pipelines
- Creating and maintaining APIs
- Independently applying CI/CD, testing, and version control
- Data modeling
- Model development and optimization
- Anomaly detection with AI
- Predictive analytics
Used technologies:
- Snowflake
- Fabric
- Azure Synapse Analytics
- Azure DataFactory
- Azure Data Lake
- Azure DevOps
- Databricks
- Spark
- CI/CD
- SQL Database
- Python
- Power Platform
Manuel Reinfurt
Last position:
Cloud Architect & Lead Developer
- Responsible for the 5-head development team and Scrum + DevOps approach
- Designed and implemented the cloud architecture for the application landscape
- Lead development for the user management on Azure Cloud using .NET 8/C#
- Development for the user management frontend using React (TypeScript)
- Technologies: Azure AD, Functions, Storage, CosmosDB, Service Bus, AKS, Monitor, Pipelines, Key Vault, MSSQL, Bicep, App Service, Log Analytics, Application Insights, Cost Management
- Backend: .NET/C#; Frontend: Angular (TypeScript)
- Unit testing: NUnit, xUnit, Moq
- CI & CD: Azure DevOps, GitHub Actions, GitLab CI
- DevOps & IaC: Bicep, Terraform, Docker, Kubernetes
- Security & Compliance: ISO 27001, DevSecOps
- Software development approach: Scrum, SAFe, Kanban
Hannah De Vries
Last position:
Fullstack Developer at DB Cargo
- Development of Blazor-Server applications for data management
- Focus on unifying design and user experience
- Mentoring junior developers
- Establishing and consulting for coding guidelines and best practices
- Technologies: .NET 9, Blazor Server, MudBlazor, HTML, CSS, MS SQL Server (T-SQL, Views, Trigger, Stored Procedures, Table-Valued Functions), Entity Framework, Visual Studio, Scrum, agile, git
Alexander Kapincev
Last position:
Senior Fullstack Developer at Deutsche Vermögensberatung AG (DVAG)
- Further development and maintenance of a complex sales platform focused on digital closing processes, customer portal interactions, and document generation for financial and insurance products
- Development and maintenance of microservices with Spring Boot 3 and Kotlin
- Frontend development with Angular 20 to display products, applications, and documents
- Conducting end-to-end tests with Playwright and integration tests with WireMock
- Creating and optimizing Quartz jobs and CronJobs
- Refactoring the security configuration in a multi-realm Keycloak setup with custom FilterChain, permission evaluator, and factory routing
- Creating dynamic emails with Thymeleaf
- Extensive error analysis with Application Insights, Log Analytics, and direct SQL debugging
- Introducing a dynamically controllable security architecture with flexible token processing based on path and realm
- Stabilizing and clearly structuring the closing process for complex product models
- Significantly increased maintainability and readability of code through modular refactorings
- Improved test stability and depth by combining Playwright, WireMock, and integration tests
- Targeted performance optimization through analysis of Hibernate statistics, query tuning, and use of SQL execution plans
- Technologies used: Java 21, Kotlin, Spring Boot 3, Angular, TypeScript, REST API, JSON, Kubernetes, Docker, PostgreSQL, Liquibase, Keycloak, OAuth2, GitHub Actions, Testcontainers, Azure Application Insights, Thymeleaf, Tilt, Microsoft SQL Server
Peter Wellbrock
Last position:
Technical Product Owner at Mercedes-Benz Tech Motion
- Developed a technical concept for virtual testing and variant management.
- Aligned with technical teams to implement innovative test solutions.
- Facilitated workshops for requirements definition and process optimization.
Discover over 15,000 top freelancers
Statistics of experts using Azure Cosmos DB
Aggregated from the professional profiles of matched freelancers.
Experience
16 years
Position duration
1.4 years
Positions per freelancer
14
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Manufacturing, Banking and Finance
Certification focus areas
Information Technology, Business Intelligence, Product Development
Bachelor's degree or higher
88%
Master's degree or higher
53%
Doctorate
19%
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
98%
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Germany 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 Germany using Azure Cosmos DB
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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
Core use
Azure Cosmos DB is a distributed NoSQL database for applications that need low-latency access, global reach, and flexible data models. Teams use it for customer profiles, product catalogs, event data, IoT ingestion, and operational systems that must stay responsive under changing load.
APIs and models
It is commonly worked with through the SQL API, MongoDB API, Cassandra API, Gremlin API, and Table API. Strong specialists know when to choose document, key-value, graph, or wide-column patterns and how to model data for the access paths the application really needs.
What experts deliver
- Data model design and partition key selection
- Throughput planning and request-unit optimization
- Indexing policy tuning and query review
- Change feed processing and event-driven workflows
- Backup, restore, and multi-region setup
When to bring in help
Companies usually bring in freelance expertise when queries are slow, costs are hard to predict, or a migration from MongoDB, Cassandra, or another store needs careful planning. In Germany, this is common in SaaS, fintech, logistics, retail, and connected-device projects where remote collaboration is normal but workshops may still happen on site.
What strong specialists know
Good Azure Cosmos DB professionals understand partitioning, consistency levels, indexing behavior, and the tradeoffs between read latency and write cost. They can troubleshoot hot partitions, noisy neighbors, and query patterns that look fine in tests but break under real traffic.
Ecosystem and fit
Cosmos DB often sits beside Azure Functions, Event Hubs, Service Bus, Synapse, and Kubernetes-based services. The best experts can explain how it fits into a wider Azure architecture, how to secure access with identity and networking controls, and how to keep data flows reliable across regions and services.
Frequently asked questions
Questions about Azure Cosmos DB? Start with the answers below.
Azure Cosmos DB is used for applications that need fast reads and writes, flexible schemas, and global distribution. It fits customer-facing apps, product catalogs, telemetry pipelines, session stores, and event-driven systems. Companies choose it when they want the database to stay responsive even when traffic patterns change.
Azure Cosmos DB is often compared with MongoDB and Cassandra because it covers similar document and wide-column use cases. The main difference is that Cosmos DB is a managed Azure service with multiple APIs and built-in global distribution options. A strong specialist knows which API and data model fit the workload best, instead of forcing one pattern everywhere.
A solid Cosmos DB specialist should also understand Azure networking, identity, monitoring, and event-driven design. Knowledge of indexing, partition strategy, and query profiling matters just as much as the database itself. In many projects, experience with Functions, Service Bus, or Event Hubs is useful too.
Azure Cosmos DB projects need more than basic database knowledge when data volume, cost control, or multi-region behavior matters. Simple prototypes can be handled quickly, but production work often needs someone who has dealt with partitioning, throughput tuning, and schema evolution. The harder the migration or latency target, the more valuable an experienced specialist becomes.
Bring in a Cosmos DB freelancer when you need focused help for a migration, performance issue, proof of concept, or architecture review. Freelancers are also useful when your team knows Azure but lacks hands-on experience with partition keys, change feed design, or consistency choices. They can join for a short assignment or stay through implementation.
Yes, most Azure Cosmos DB work can be done remotely for teams in Germany. Discovery, design reviews, query tuning, and migration planning are easy to run online, while a workshop or handover can happen on site if needed. Many companies mix both formats to keep delivery moving without slowing the team down.
A good Azure Cosmos DB specialist explains tradeoffs clearly and backs choices with workload details, not guesswork. Look for evidence of partition-aware design, cost control, query optimization, and safe migration planning. Clear documentation and a practical rollout plan are strong signs of quality.
The main risks in Azure Cosmos DB projects are poor partition design, unexpected request-unit costs, and queries that do not scale under load. Another common issue is choosing the wrong consistency level for the business need. Strong experts reduce these risks early by testing access patterns and reviewing data shapes before production.
The average hourly rate of freelancers in Germany who have used Azure Cosmos DB in their recent projects is 98 €, which corresponds to a daily rate of about 782 € based on an 8-hour working day.
Of the freelancers in Germany who have used Azure Cosmos DB in their recent projects, 88% hold at least a Bachelor's degree, 53% hold at least a Master's degree, and 19% hold a doctorate.
On average, freelancers in Germany who have used Azure Cosmos DB in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 1.4 years.
The most common languages among freelancers in Germany who have used Azure Cosmos DB in their recent projects are German (100%), English (95%), and French (12%).
The most common industries among freelancers in Germany who have used Azure Cosmos DB in their recent projects are Information Technology (93%), Manufacturing (61%), and Banking and Finance (56%).
The most common business areas among freelancers in Germany who have used Azure Cosmos DB in their recent projects are Information Technology (100%), Product Development (93%), and Quality Assurance (61%).
Main locations of FRATCH Experts, who have recently used Azure Cosmos DB
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 
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FRATCH CEO
