Docker Experts in Dortmund
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Meet FRATCH Experts in Dortmund, who have recently used Docker
Nemanja Milenković
Last position:
AI Engineer / Senior Backend Engineer at Intelycx
Manufacturing intelligence platform with enterprise workflows, RAG, real-time AI assistant features, and multi-repository backend architecture.
- Built and extended production AI/backend services with Django, DRF, FastAPI, GraphQL, Celery, PostgreSQL, MySQL, Redis, and WebSockets across a modular multi-repository platform.
- Contributed to ARIS V2, a real-time manufacturing AI assistant using LangChain, LangGraph, MCP tool orchestration, planning/execution flows, OpenAI, AWS Bedrock, Qdrant, and Elasticsearch/OpenSearch-backed retrieval.
- Supported rollout expansion from ARIS V1 in 4 of 17 client production plants to ARIS V2 currently active in 13 of 17 plants, increasing real-world deployment coverage to more than 50% of the client footprint.
- Worked on document-grounded RAG functionality including ingestion, OCR, chunking, embeddings, indexing, retrieval, reranking, and grounded answer generation for industrial workflows.
Stack: Python, Django, DRF, FastAPI, LangChain, LangGraph, GraphQL, Celery, WebSockets, OpenAI, AWS Bedrock, Qdrant, Elasticsearch/OpenSearch, PostgreSQL, MySQL, Redis, Docker.
Manuel Kübler
Last position:
.NET Developer, SAP Business One Consultant at Own Projects
- DTO class generator: In-house development of a tool for the automatic generation of classes, functions, and methods for use in .NET Core projects based on SAP Business One Service Layer metadata
- E-invoice import add-on: Development of a SAP Business One add-on / coresuite module for the automated import of ZUGFeRD e-invoices as incoming invoices – with configurable mapping to flexibly control the import logic across four mapping types (DIRECT, SQL, FIXED, EXPR). The add-on is available as a licensed product for SAP Business One customers.
Stack: SAP Business One, SAP Business One Service Layer, coresuite Country Package, C#
Laurin Hagemann
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.
Ashwin Parthasarathy
Last position:
Freelance Data Scientist at Mercor Intelligence
- Architected and deployed end-to-end machine learning pipelines across classification and prediction datasets, ensuring robustness and reproducibility through MLOps best practices.
- Contributed directly to LLM model output accuracy improvement by designing and engineering specialised prompts grounded in end-to-end ML and SciML pipeline logic.
- Developed training data for large language models by formulating coding problems that models could not resolve and subsequently documenting the correct solutions.
Adnan Urwani
Last position:
Independent AI & Automation Projects
- Development of an automated job-scouting workflow for the aggregation and LLM-based evaluation of job postings from RSS feeds and APIs.
- Development of a Telegram bot for voice and text messages, featuring LLM-supported processing, summarization, and structured JSON output.
- Implementation of a personal task-planning assistant using n8n, OpenRouter, and Supabase for automated daily and knowledge organization.
- Development of LLM chatbots for structured knowledge retrieval utilizing prompt constraints, guardrails, and forced output formats.
Arkadius Sikora
Last position:
Architect; Senior Developer; Full Stack Developer; DevOps Lead at Bitmarck Holding GmbH
- Requirement engineering for Ombudsstelle and creation of technical user stories for EPA V3
- Handling of objections and revocations via mail and letter with high transaction mail volume
- Coordination with other teams on interfaces
- Design of a highly available, high-throughput solution on OpenShift with Java backend microservices
- Implementation and extension of microservices
- Infrastructure setup for deployment on OpenShift/Kubernetes including Jenkins pipelines
- Integration with BitIAM, TI-M Fachdienst, Consent Keeper and FDV
- Capture of requirements from DevOps operations and business units
- Continuous integration and Scrum practices
- Use cases: Kassenfusion, Opt-Out, Last Test, Widerspruchsmanagement
- Integration test automation and feature extensions including Spring Boot 3 updates
Patrik Garten
Last position:
Technical Lead Conversational AI at CANCOM
- Technical lead of a team developing agentic chatbot solutions (React, TypeScript, Python, FastAPI)
- Architecture design for multi-LLM dialog systems - focus on maintainability, UX, and autonomous execution
- Stakeholder alignment, CI/CD processes, and AI integration at enterprise level
Thomas Grevenkamp
Last position:
Senior .NET / Cloud Engineer at Freelance
Building an observability and alerting solution for Business Central Job Queue monitoring
- Built a central monitoring solution to track the Business Central Job Queue in a multi-organization environment in Azure DevOps
- Integrated Azure Application Insights and Log Analytics for structured collection and analysis of job runtimes and error events
- Developed KQL queries for targeted analysis of failed jobs and detection of error patterns
- Connected Grafana and Power BI to visualize operational metrics and job status in real time
- Implemented an automated alerting workflow with Power Automate – when a job fails, a notification email is sent immediately
- Ensured transparency about the state of productive background processes during live operations
Result: Full transparency over failed Business Central jobs · Clear reduction in response time through automated email alerting · Stable foundation for proactive operation of productive background processes
Technologies: Azure DevOps | Application Insights | Log Analytics | KQL | Grafana | Power Automate | Power BI | Business Central | Azure Monitor
Christian Weinbörner
Last position:
Interim Business Analyst / Product Owner at Bundesdruckerei GmbH (via FourEnergy GmbH)
- Initial assessment of requirements based on a business value prioritization framework
- Identification of issues as well as requirement gathering and evaluation using UML, BPMN, and design thinking methods for iterative requirements analysis through interviews and workshops
- Use of user story mapping in Miro to visualize and align functional requirements (e.g. correct transmission of all application data and attachments to the specialist system) as well as non-functional requirements (e.g. complete and verifiable deletion of an applicant's data) with stakeholders
- Proactive stakeholder management of internal and external stakeholders from public authorities, business units, organizations, and companies
- Preparation of status reports to communicate project progress and upcoming tasks transparently
- Responsibility for a REST-based integration solution (middleware) for secure data exchange between core systems and external specialist applications; ensuring stability and performance in day-to-day operations
- Support for Product Owners in prioritizing backlog items and in product discovery
- Communication of planning to internal and external stakeholders as well as interim assumption of Product Owner tasks and responsibilities during a staff change
Aladdin Alzoubi
Last position:
Technical Consultant at NFON
- Presentations and workshops regarding different VOIP products and technologies
- Design of VOIP and network solutions from core to premium solutions and necessary non-standard solutions
- Processing of tenders
- Development of VOIP and network technical implementation of customer requirements
- Implement and configure different UC products on cloud
Mesut Yilmaz
Last position:
Solution Architect Computer Vision Store at Schwarz IT (Lidl/Kaufland)
- Expansion and support of the product portfolio for video analytics and computer vision
- Requirements gathering and engineering
- Consulting, project management and coordination of the pilot and international rollout
- Tools: IP-based camera and video systems, Citrix administration, OneNote, Microsoft Teams, Node-RED, Office 365, Age Verification, Qognify Umbrella, ThingsBoard, Xovis 3D sensors, AXIS cameras, GK checkout software, Atlassian JIRA
Yoav Netzer
Last position:
Freelance Software Architect at Freelance Consultant
- Various small consultations, e.g. concepts and arcitectures.
- Updating my Matlab, Linux, IPv6, Cyber-Security, C++ (up to 23) and Python skills.
Hendrik Belitz
Last position:
Lecturer at Front and Fullstack Development Lecturer
- Teaching JavaScript, HTML, CSS, React, NodeJS, MongoDB, MariaDB, and Express
- Designing and preparing lessons
- Classroom teaching and one-on-one coaching
Mohammed Abdallatif
Last position:
Data Scientist & Energy Consultant at Accenture GmbH
Yasin Yildiz
Last position:
DevOps Architect & Backend Developer at Schweizerische National Bank
- Architecting and enhancing the DevOps infrastructure in a regulated environment
- Migration, planning, and development from a monolith to microservices (ASP.NET Core)
- Building and maintaining CI/CD pipelines (GitLab, Jenkins) to support agile development
- Managing artifact repositories with JFrog Artifactory and security scans via Xray
- Migrating and integrating source code repositories (SVN → GitLab)
- Operating and configuring a container platform with OpenShift
- Automating deployments with Ansible, Helm, and the Ansible Automation Platform
- Implementing monitoring and alerting solutions with Prometheus
- Collaborating closely with the frontend development team to optimize build, test, and release processes
- Supporting the establishment of secure and scalable infrastructure processes (Secure SDLC)
- Documenting and sharing knowledge within the team
- Leading refinements and designing the backend architecture
Discover over 15,000 top freelancers
Statistics of experts using Docker
Aggregated from the professional profiles of matched freelancers.
Experience
17 years
Position duration
1.9 years (Germany: 5.1 years)
Positions per freelancer
13 (Germany: 11)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Education, Healthcare
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
86% (Germany: 91%)
Master's degree or higher
43% (Germany: 60%)
Doctorate
7% (Germany: 9%)
Certifications per freelancer
2
Most common languages
German, English, Arabic
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 Dortmund 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 Dortmund using Docker
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
Container Basics
Docker packages software and its dependencies into containers that run the same way across laptops, test systems, and servers. It is used for microservices, APIs, internal tools, and repeatable local setups. For many teams, Docker is the fastest path from code to a consistent runtime.
Core Tools
- Docker Engine for building and running containers
- Docker Compose for multi-service local stacks
- Dockerfiles for reproducible images
- Registry workflows for storing and sharing images
- Base image choices that keep builds lean and stable
Strong professionals know how these pieces fit together and where small mistakes turn into slow builds or fragile deployments.
Typical Work
Companies bring in Docker specialists when they need to containerize an existing service, clean up a build pipeline, or make local development match production more closely. They also help with image hardening, volume setup, networking, and environment variables.
In Dortmund, this often matters for teams that ship business software, data services, or connected systems and need smooth handoffs between local and remote work.
What Good Experts Do
A strong Docker expert writes clear Dockerfiles, keeps images small, and avoids unnecessary layers. They understand container networking, persistent storage, and how to debug startup issues quickly.
They also think about security, such as least-privilege settings, dependency updates, and safe handling of secrets. Good work leaves behind clean, maintainable setups that other specialists can extend.
Collaboration Fit
Docker work is often remote-friendly because the main deliverables are files, scripts, and environments. On-site time can still help when a team needs workshops, legacy system discovery, or fast alignment with local ops and product specialists.
In Dortmund, German-speaking collaboration is common, but many Docker projects also run well in English when the technical scope is clear.
When It Becomes Critical
- Builds differ between local machines and production
- Docker Compose files have grown hard to maintain
- Images are too large or slow to start
- Deployment steps are manual or inconsistent
- Teams need clearer handover for containerized services
These are signs that a Docker professional can remove friction fast and leave a cleaner setup for the next release.
Frequently asked questions
Before you brief your next project: the most common questions about Docker.
Docker is used to package an application, its dependencies, and its runtime into a container that behaves the same across systems. Companies use it for APIs, microservices, local development stacks, test environments, and repeatable deployments. It is especially useful when teams want fewer surprises between a laptop and production.
Docker handles image building and container runtime tasks, while Kubernetes focuses on orchestration, scaling, and scheduling across many systems. Many projects use both, because they solve different problems. If you only need consistent packaging and simple service coordination, Docker may be enough; if you need cluster management, Kubernetes usually enters the picture.
A company should hire a Docker specialist when container builds are fragile, local setups do not match production, or deployment steps have become manual. They are also useful when teams need better Compose files, cleaner images, or safer container settings. In Dortmund, this can help mixed teams that need both remote coordination and occasional on-site workshops.
A strong Docker professional usually understands Dockerfiles, Docker Compose, image layering, networking, volumes, environment handling, and registry workflows. Helpful adjacent skills include Linux, shell scripting, CI/CD pipelines, and basic cloud deployment knowledge. Security and troubleshooting matter just as much as building images.
A Docker project does not always need a very large team, but it does need someone who has solved container problems in real systems. Simple image packaging is one thing; cleaning up a complex stack with multiple services, secrets, and deployment rules is another. The more moving parts you have, the more valuable practical container experience becomes.
Most Docker work can be done remotely because the core tasks are files, configs, and build pipelines. On-site work helps when a team wants hands-on reviews of legacy environments, workshops for adoption, or close coordination with local stakeholders. Many projects use a mix of both.
A good Docker freelancer explains trade-offs clearly and produces setups that are easy to read and maintain. Look for clean Dockerfiles, sensible Compose structures, reliable startup behavior, and a clear approach to secrets and image size. Strong specialists also document what changed and why.
Docker is the core container technology and command-line workflow used to build and run containers. Docker Compose is the tool for describing and starting multi-service environments together, while Docker Desktop provides a local app and integrated tooling for development on common desktop systems. A good freelancer knows when each one is appropriate.
The average hourly rate of freelancers in Dortmund, Germany who have used Docker in their recent projects is 88 €, which corresponds to a daily rate of about 700 € based on an 8-hour working day.
Of the freelancers in Dortmund, Germany who have used Docker in their recent projects, 86% hold at least a Bachelor's degree, 43% hold at least a Master's degree, and 7% hold a doctorate.
On average, freelancers in Dortmund, Germany who have used Docker in their recent projects have 17 years of professional experience, with a single engagement typically lasting around 1.9 years.
The most common languages among freelancers in Dortmund, Germany who have used Docker in their recent projects are German (100%), English (100%), and Arabic (12%).
The most common industries among freelancers in Dortmund, Germany who have used Docker in their recent projects are Information Technology (94%), Education (65%), and Healthcare (65%).
The most common business areas among freelancers in Dortmund, Germany who have used Docker in their recent projects are Information Technology (94%), Product Development (94%), and Quality Assurance (65%).
Main locations of FRATCH Experts, who have recently used Docker
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 
Essen 
Bremen 
Dresden 
Hanover 
Nuremberg Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
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We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
