OpenAI Experts in Dortmund
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Meet FRATCH Experts in Dortmund, who have recently used OpenAI
Oliver Kierepka
Last position:
Founder & Manager at ThinkForm Studio – AI Product Design & Innovation
Designing AI-native digital products by combining product strategy, UX research, interaction design, software engineering, and modern AI workflows. Leading projects from discovery to implementation while integrating AI throughout the entire product development lifecycle.
Key responsibilities
- → Product discovery, stakeholder workshops, Jobs-to-be-Done and user research
- → User journey mapping, information architecture and interaction design
- → Wireframes, high-fidelity UI, prototypes and scalable design systems in Figma and Penpot
- → AI-assisted interface generation and rapid concept exploration using Figma AI, Figma Make and generative design workflows
- → Design-to-code workflows with AI-supported frontend generation and engineering collaboration
- → Building accessible interfaces following WCAG 2.2 and enterprise design standards
- → Usability testing, iterative validation and KPI-driven product optimization
- → Development of AI knowledge systems, MCP-powered design workflows and human-in-the-loop review processes
- → Close collaboration with engineering teams to ensure production-ready implementation
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.
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.
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
Derek Micallef
Last position:
AI Automations Manager - Hardware Setup, Automation & Voice Agent at Autohaus Mazda
- Setting up new desktop computers
- Setting up a VPS for automation, databases and chat interface
- Connecting to Azure AI Foundry
- Developing various n8n workflows for email, social media and document management
- Implementing a QA system (backups, error handling, HITL)
- Setting up and optimizing an inbound voice agent
Andreas Einzmann
Last position:
AI Coach and Consultant at Studio 8 Dortmund
- Setting up and consulting a startup for organizational development (AI-supported)
- Vision and mission workshops
- Marketing roadmap and process design
- Development of sales processes (sales funnel, lead generation)
- Brand building and social media omnichannel strategies
- Content generation for audio, video, and posts (AI-supported)
- Agile consulting and SAFe implementation
- Atlassian consulting and setup of Confluence and Jira (workflows, dashboards, reporting)
- Setup of a podcast and video studio including live streaming setup
- Selection and implementation of hardware and software
- Website creation and brand building
- CMS implementation based on Typo3
- Consulting in sales, marketing, and social media
- Supporting companies in the efficient use of AI technologies
- Strategy development and consulting on implementing AI strategies
- Change management and supporting teams in AI adoption, including training
- Technical expertise in machine learning, data processing, and large language models (LLMs) like Llama, Claude, and OpenAI GPT
- Selection, fine-tuning, and integration of LLMs into business processes
- Consulting on ethics and governance for responsible AI use
- Conducting tailored training for executives and teams
- AI analysis of various large language models (Llama, OpenAI, Mistral)
- Creation and training of custom GPTs focused on organizational development (product vision, OKR, agile maturity)
- Development of a chatbot on agile maturity
- Development of an AI-generated survey to assess organizational agility
- Setup of local offline GPTs with a focus on data protection and GDPR compliance
- Conducting AI workshops for SMEs and mid-sized companies
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
Discover over 15,000 top freelancers
Statistics of experts using OpenAI
Aggregated from the professional profiles of matched freelancers.
Experience
18 years (Germany: 16 years)
Position duration
1.6 years (Germany: 2.8 years)
Positions per freelancer
13 (Germany: 12)
Top business areas
Information Technology, Product Development, Research and Development
Top industries
Healthcare, Information Technology, Automotive
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
100% (Germany: 89%)
Master's degree or higher
40% (Germany: 61%)
Doctorate
20% (Germany: 10%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, Spanish
Speak two or more languages
100% (Germany: 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 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 OpenAI
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
What OpenAI covers
OpenAI work usually means building products with GPT models, ChatGPT, and the OpenAI API. Companies use it for assistants, search over internal knowledge, content workflows, and text automation inside existing tools.
Typical deliverables
- Prompt design and prompt testing
- API integrations for apps and internal tools
- ChatGPT-based support or copilot features
- Retrieval workflows with company data
- Output checks and guardrails
Skills that matter
Strong specialists know model behavior, message design, function calling, token limits, and response control. They also understand data handling, logging, and how to keep outputs useful in real business flows.
When teams bring help
Companies usually look for freelance expertise when an internal team wants to move from experiments to a stable feature. That often happens when a product needs better prompts, safer output, or a cleaner link between OpenAI and existing systems.
Dortmund projects
In Dortmund, OpenAI experts often support industrial, logistics, and software teams that want faster knowledge access or customer-facing automation. Remote work is common, but on-site collaboration can help during workshops, security reviews, or discovery sessions.
What good experts deliver
Good professionals do not just call the API. They define the use case, choose the right model setup, test edge cases, and document how the solution should be maintained, adapted, and reviewed over time.
Frequently asked questions
Everything clients usually want to know about OpenAI, in one place.
A strong OpenAI specialist usually builds assistants, support flows, internal search, and text automation. Many projects also include ChatGPT-style interfaces, document Q&A, or features that use GPT models through an API.
OpenAI is often chosen for direct access to GPT models and a mature developer ecosystem. Azure OpenAI can be better when a company already works deeply inside Microsoft Azure and wants that same model family in its cloud setup.
A good OpenAI freelancer should also understand prompt design, API work, retrieval with company data, and basic software integration. Knowledge of security, evaluation, and logging is important when the feature will be used in real operations.
You do not need a complete spec, but you should know the user problem and the expected output. A strong OpenAI expert can help turn that into prompts, workflows, and a small proof of concept before the final scope is fixed.
For many OpenAI projects, yes. Remote work is often enough for prompt work, integration, and testing, while a Dortmund-based on-site session can help when teams need discovery workshops or want to review sensitive workflows in person.
Look for clear output control, useful fallbacks, and test cases that cover weak inputs and edge cases. A solid OpenAI specialist will also explain model choice, data boundaries, and how the solution should be monitored after launch.
If prompts are inconsistent, outputs are unreliable, or your team cannot connect the model cleanly to existing systems, outside help is useful. A seasoned OpenAI expert can reduce trial and error and turn an experiment into a dependable feature.
Yes, and that is one of the most common use cases for OpenAI. Many teams combine it with retrieval, document indexing, or knowledge bases so the assistant answers from approved company sources instead of guessing.
The average hourly rate of freelancers in Dortmund, Germany who have used OpenAI in their recent projects is 95 €, which corresponds to a daily rate of about 760 € based on an 8-hour working day.
Of the freelancers in Dortmund, Germany who have used OpenAI in their recent projects, 100% hold at least a Bachelor's degree, 40% hold at least a Master's degree, and 20% hold a doctorate.
On average, freelancers in Dortmund, Germany who have used OpenAI in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 1.6 years.
The most common languages among freelancers in Dortmund, Germany who have used OpenAI in their recent projects are German (100%), English (100%), and Spanish (29%).
The most common industries among freelancers in Dortmund, Germany who have used OpenAI in their recent projects are Healthcare (100%), Information Technology (100%), and Automotive (71%).
The most common business areas among freelancers in Dortmund, Germany who have used OpenAI in their recent projects are Information Technology (100%), Product Development (100%), and Research and Development (100%).
Main locations of FRATCH Experts, who have recently used OpenAI
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 
Essen 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
