MongoDB Experts in Dusseldorf
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Meet FRATCH Experts in Dusseldorf, who have recently used MongoDB
Marijn Scholtens
Last position:
Senior Software Engineer at Puls Security GmbH
Optimizing and acceleration of our Gitlab CI pipeline
Conceptual work for the PoC of the Zero Trust system
Extension of the policy-engine backend in Go
Extension of the policy-testing mechanism in Python
Architectural design of the PEP component of Zero Trust
Documentation of the product
Technologies: Zero Trust, Go, Python, Gitlab CI, Docker, JWT, Domain-Driven Design
Boris Solos
Last position:
Generalist expert for software development at Mercor
- Training the AI models, evaluating images and texts for UI/UX, turning the provided data into insights via OpenAI Feather as part of the machine learning workflow
Technologies: OpenAI Feather
Rashmi Kondli
Last position:
Service Lifecycle Manager at Vodafone Group Services GmbH
Ensured 99%+ platform availability across Android, iOS, and web, maintaining zero customer-impact and zero P1 incidents through proactive monitoring and risk mitigation.
Led Incident, Problem, and Change Management with offshore operations and vendors, driving rapid issue resolution and improving product stability.
Partnered with QA teams and international OpCos to validate defects, reproduce issues, and enhance product quality using real-time customer insights.
Managed end-to-end lifecycle activities including platform migrations, infrastructure upgrades, certificate renewals, and integrations (Identity, API, Messaging).
Established operational excellence and governance by designing service support models, leading Early Life Support (ELS) and post-launch stabilization, delivering KPI reporting, and ensuring seamless transition from project to service management.
Product: Secure Net - Classic, Converged & Home Wifi Protect
Product Description: The all-in-one digital security service that helps keep you and your family safe online when using the Vodafone (Mobile and Broadband) network. Get alerts if your personal information shows up anywhere it shouldn't, whilst we find and block malicious content across all your devices using.
Clients: Vodafone OpCos - Spain, Italy, UK, Ireland, Greece, Turkey, Germany, Portugal, Romania
Role & Location: Service Manager for Lifecycle and Operations at Düsseldorf, Germany
Worked with/on: ITSM Remedy, Jira, Confluence, Splunk, Dynatrace, Tableau, Mongo DB, Google Analytics, App Follow
Thorsten Lenzen
Last position:
Senior Security Analyst
- Analysis and remediation of security vulnerabilities in a risk assessment system for energy trading
- System analysis
- Threat modeling
- Decision-making on vulnerability mitigation strategies
- Implementation of vulnerability detection mechanisms
- Security scans
- DevSecOps practices
- Technical environment: Visual Studio Code, JetBrains Suite, MS Threat Modeling Tool, DevSecOps, Git, AWS, DynamoDB, SQL Server, Endur, Snowflake, Orca
- Languages: C#, JavaScript, TypeScript, Python, PowerShell, Bash, Terraform, SQL
Reza Sayyarzamani
Last position:
DevOps and Cloud Engineer at Rhomberg Sersa Rail Group
- Migrated backups and full workloads to AWS and Azure, including setup and management of AKS & EKS clusters.
- Automated infrastructure with Terraform & ArgoCD and implemented CI/CD pipelines with GitLab.
- Monitored systems on OpenShift 4 (on-premise) with Grafana & Prometheus, using CloudWatch and X-Ray for analysis and logging.
- Built and maintained secure network infrastructures (VPCs, SGs, WAFs, ACLs), integrated Azure Log Analytics.
- Collaborated closely with infrastructure and development teams, maintained technical documentation with Confluence, handled tickets via Jira, and promoted cloud knowledge within the company.
Daniel Ubani
Last position:
Senior Application Packaging & Deployment Engineer at Allevio AG (Client: Allianz Technology)
- Enterprise application packaging and deployment for Allianz's global Windows migration programs across Europe, North America, and APAC
- Migrated hundreds of enterprise applications from Windows 10 VDI to Microsoft Azure Windows 365 (Windows 11)
- Created software packages in MSI/MST, FlexApp, PSADT 3/4, and App-V according to enterprise packaging standards
- Developed an ASP.NET packaging automation platform with MongoDB, SQL Server, SharePoint, and Outlook integration
- Built PowerShell modules for automated quality checks of MSI and FlexApp packages
- Developed a release conflict detection module in PowerShell to identify potential deployment issues before production
- Created WDAC monitoring scripts for automated policy oversight and incident response
- Implemented MSGraph API calls in PowerShell for Azure AD and Intune operations
- Created Citrix oData scripts for historical usage analysis (BYOD, VDI, fat clients)
- Developed an Intune Win32 app 'Do Not Disturb' deployment routine for an optimal user experience
- First point of contact for troubleshooting production incidents with packaged applications
- Coordinated application owner, UAT, and release testing for hundreds of deployments
- Administered Microsoft Intune, Citrix environments, and SQL Server security
- Created and tested WDAC policies in Intune; managed configuration policies and Win32 app deployments
- Primary packaging resource for Allianz France since 2019
Mitali Soti
Last position:
Freelancer at Fintom8 Fintech AI UG
- Built and launched the AI-powered “E-Invoice Corrector,” an intelligent system for validating and correcting invoices, using Python, FastAPI, and machine learning. The system is now live at Fintom8.
- Converted the Corrector into a fully functional API, published with Swagger documentation for easy access and integration by internal and external consumers.
- Designed, experimented with, and optimized advanced LLM prompts and meta-prompting strategies to improve automated reasoning, error correction, and decision-making in agent workflows.
- Wrapped and integrated existing APIs within the Google Agent Development Kit (ADK) framework to enhance automation capabilities and conversational AI workflows.
- Implemented comprehensive unit testing using pytest and unittest, and employed breakpoint debugging (VS Code, pdb) to ensure code reliability, maintainability, and smooth runtime execution.
- Utilized Pydantic and Tabulate for structured data validation, API schema management, and clear tabular data representation in testing and debugging workflows.
- Pursuing the Google Cloud Professional Certificate.
Dmitry Tarantin
Last position:
Web Software Engineer at Freelancer
Third-side integration development (REST: Amazon, OpenAI, Etsy, Shopware, Prestashop, etc)
Performance optimization (Refactoring, SQL analysis)
LMS development and deployment (Moodle)
Cloud deployment automation (Amazon, Azure, Gitlab CI/CD, Docker)
Backend and Frontend development (Laravel, VueJs)
Collaboration with partner-developers (national and international)
Shirtigo GmbH
GRELLARTIG Digital GmbH
velpTEC edutainment GmbH
Jan G.
Last position:
Master Data Application at confidential
Visualization, search, and maintenance of various types of master data, providing them via a REST API, and implementing a variety of import and export formats.
Implementation, architecture, project management.
Technologies and tools: Angular (Signals, Signal Store, swagger-codegen, standalone components), Java, PostgreSQL, ActiveMQ, JavaScript, Spring Boot (Spring Core, Spring MVC, Spring Data/JPA via Hibernate, Spring Security, Spring Modulith), JUnit, Flyway, QueryDSL, GraphQL, REST API, Node, npm, Maven, SonarQube, GitLab CI/CD pipelines, Docker, Nexus, OpenAPI + Swagger UI, Keycloak, OAuth2, OpenID Connect, IntelliJ IDEA, Jira, Confluence.
Nils Schneider
Last position:
Backend system and web client for exchanging electricity meters for utility providers at Freelance
Design and implementation of a system to control the entire process for new, removal, and exchange operations of electricity meters by external service providers for a utility company
Automated retrieval of orders and available devices via defined interfaces (e.g. from SAP)
Orchestration of process steps (assigning meters, processing meter data, sending updated information back to the source system) using a Spring Boot backend
Provision of a React-based web client for operational tracking and control of orders, e.g. to continue failed process steps or resend notifications
Jacqueline Haefke
Last position:
Kitchen Appliance Manufacturer
Setting up and enhancing an international subscription management system
Migrating and decommissioning a Hybris-SAP system and integrating Zuora
Implementing numerous interfaces to various systems (external and internal)
Setting up and improving monitoring with Grafana, Prometheus, and Databricks
Introducing logging with Loki
Implementing business requirements using jQuery, Thymeleaf, Spring Boot, Java, Go, and Python
Adjusting and extending the GitLab CI pipelines
Setting up and extending infrastructure as code with Terraform and ArgoCD on AWS
Setting up and running E2E and performance tests
Expanding the Databricks business intelligence solution to provide various KPIs
Responsibilities: Architecture, DevOps, development, unit tests, coaching employees and apprentices, E2E, smoke, and integration tests, agile methods consulting (Kanban, Scrum)
Technologies and methods: Java, Go, Kotlin, Node.js, Spring Boot, SOAP/REST, Quarkus, Thymeleaf, Vaadin, Slack, Jira, Confluence, IntelliJ, GitLab, SQS, Kafka, AWS, Kubernetes, Terraform, Maven, Gradle, GitLab CI, Databricks
Andreas Grutz
Last position:
Senior Fullstack .NET (Core) & Angular Developer at IT service provider
- Supported an agile team in the development of a new CRM tool
- Web frontend development (Angular 17 with MDB-Bootstrap, microfrontends, DDD)
- Backend development (C# & .NET 7-9, MongoDB, MassTransit, RabbitMQ, Elasticsearch, microservices, DDD)
- Coordination with stakeholders & product owners
- Assisted in sprint planning
Discover over 15,000 top freelancers
Statistics of experts using MongoDB
Aggregated from the professional profiles of matched freelancers.
Experience
18 years (Germany: 17 years)
Position duration
2.5 years (Germany: 2.1 years)
Positions per freelancer
13 (Germany: 11)
Top business areas
Information Technology, Product Development, Operations
Top industries
Information Technology, Banking and Finance, Manufacturing
Certification focus areas
Information Technology, Project Management, Business Intelligence
Bachelor's degree or higher
88% (Germany: 93%)
Master's degree or higher
50% (Germany: 57%)
Doctorate
13% (Germany: 6%)
Certifications per freelancer
13 (Germany: 2)
Most common languages
German, English, Spanish
Speak two or more languages
100% (Germany: 97%)
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 Dusseldorf 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 Dusseldorf using MongoDB
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
Document data
MongoDB is a document database built for data that changes shape often. It stores records as BSON documents, which makes it a fit for product catalogs, customer profiles, event data, and content-heavy applications. Teams choose it when they need flexible schema design without losing query power.
Common uses
- Content management and editorial systems
- Product and inventory catalogs
- Event tracking and activity feeds
- Mobile and web apps with changing data models
- APIs that need fast reads and writes
Ecosystem
Strong specialists know MongoDB Compass, the MongoDB Shell, and drivers for the stack in use. They work with aggregation pipelines, indexes, replication, backups, and sharding. They also understand when to pair MongoDB with search, caching, or message systems instead of forcing one tool to do everything.
What good experts do
A good MongoDB professional shapes collections around access patterns, not just tables translated into documents. They keep queries predictable, create the right indexes, and watch for growth issues before they hurt performance. They can also review schema design and catch data duplication that makes maintenance harder.
When to bring help
Companies usually bring in freelance MongoDB expertise during new builds, migrations from another database, or performance problems in production. It is also useful when a team needs help with a document model, a replica set, or a reporting workload that is slowing core services. In Dusseldorf, this is common for commerce, media, logistics, and B2B software teams that need focused help without a long hiring cycle.
Delivery focus
Experienced specialists can set up local development environments, clean up existing collections, improve slow queries, and support rollout plans. They should write clear handover notes, explain trade-offs in plain language, and collaborate well with remote or on-site teams. For Dusseldorf projects, English is often enough, while German helps when they work closely with local stakeholders and internal teams.
Frequently asked questions
Curious about MongoDB? Here are the answers that come up again and again.
MongoDB is often used for apps where data changes over time and records do not fit neatly into fixed rows. Common examples include product catalogs, user profiles, content systems, event logs, and APIs that need flexible documents. It is a strong fit when teams want fast development and clear query control.
MongoDB works differently from relational databases such as PostgreSQL or MySQL because it stores documents instead of tables. That makes it easier to handle variable data structures, while relational systems are often better when strict joins and highly normalized data are central. Many teams use MongoDB when schema flexibility matters more than classic relational modeling.
A strong MongoDB specialist usually understands schema design, indexing, aggregation, and performance tuning. Useful adjacent skills include JavaScript or TypeScript, Node.js, Python, API design, Docker, and basic cloud operations. For larger systems, experience with monitoring and backup planning matters too.
A simple MongoDB setup may only need someone who knows document modeling and common queries. Migration work, sharding, or production performance issues call for deeper experience because small design mistakes can be costly. The right level depends on whether the task is greenfield, maintenance, or rescue work.
Yes. Many MongoDB tasks can be done remotely, including schema review, query tuning, and troubleshooting. On-site time helps when workshops, stakeholder alignment, or hands-on rollout support are needed in Dusseldorf, especially for teams that prefer direct communication.
Ask how the person models documents, chooses indexes, and handles growth, backups, and recovery. For MongoDB, it also helps to hear how they approach read and write patterns, aggregation pipelines, and migration risks. Clear answers usually show whether they have practical production experience.
Look for a MongoDB specialist who can explain trade-offs in plain words and connect design choices to real usage. Good signs are clear schema reasoning, practical indexing choices, and awareness of operational issues such as monitoring and failover. They should also be able to review existing data instead of only describing best practices.
It can be. MongoDB is often added when a team needs flexible document storage for a specific service, while the relational database stays in place for accounting, reporting, or other structured workloads. The best specialists can tell you where MongoDB adds value and where it would create unnecessary complexity.
The average hourly rate of freelancers in Dusseldorf, Germany who have used MongoDB in their recent projects is 88 €, which corresponds to a daily rate of about 703 € based on an 8-hour working day.
Of the freelancers in Dusseldorf, Germany who have used MongoDB in their recent projects, 88% hold at least a Bachelor's degree, 50% hold at least a Master's degree, and 13% hold a doctorate.
On average, freelancers in Dusseldorf, Germany who have used MongoDB in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 2.5 years.
The most common languages among freelancers in Dusseldorf, Germany who have used MongoDB in their recent projects are German (100%), English (100%), and Spanish (17%).
The most common industries among freelancers in Dusseldorf, Germany who have used MongoDB in their recent projects are Information Technology (92%), Banking and Finance (67%), and Manufacturing (58%).
The most common business areas among freelancers in Dusseldorf, Germany who have used MongoDB in their recent projects are Information Technology (100%), Product Development (83%), and Operations (67%).
Main locations of FRATCH Experts, who have recently used MongoDB
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 
Leipzig 
Dortmund 
Essen 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
