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OpenAI Experts in Dortmund

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Hire experts who design GPT-powered applications, connect OpenAI models to business data, and build reliable AI workflows with tools such as the Responses API, function calling and embeddings. FRATCH matches you quickly with vetted, available freelancers who fit your requirements.

Meet FRATCH Experts in Dortmund, who have recently used OpenAI

Verified expert

Oliver K.

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Senior Product Designer | AI-Native UX/UI Designer | Design Systems | Human-Centered AI

Dortmund
Oliver K.

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
Verified expert

Nemanja M.

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Senior / Lead AI Engineer | Applied GenAI, RAG, AI Agents & AI Platform Engineering

Dortmund
Nemanja M.

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.

Verified expert

Laurin H.

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Software Architect (Freelance)

Bochum
Laurin H.

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.
Verified expert

Kersten L.

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Senior Consultant · Full-Stack Engineer · Coding Architect · AI Engineer · Coach

Dortmund
Kersten L.

Last position:

Lead Architect / Lead Developer at Bettles: Sports Betting Platform

  • Complete greenfield rebuild across the whole stack — built AI-native: backend in Go and NestJS, PostgreSQL (CNPG) on K3s with GitOps/Terraform; frontend on Angular 22, zoneless.
  • Orchestrated coding agents (e.g. Claude Code, Cursor) across the entire lifecycle — architecture, implementation, testing, reviews, documentation — driven by Specification-Driven Development (SDD).
  • “Bruno” — LLM commentator persona backed by RAG and MCP for a personality that stays consistent across all generations (match previews, post-match reports, his own virtual bets).

Angular 22 (zoneless, without Zone.js), Claude Code, Claude Code Skills, CNPG, Cursor, Design Tokens (Spec for Code), Docker, Gherkin, Git, GitLab, GitOps, Go, Google Gemini, Grafana, Hetzner Cloud, K3s, Keycloak, Kubernetes, Lighthouse, LLM Integration, Model Context Protocol (MCP), NestJS, Node.js, NPM, Playwright, PostgreSQL, Prometheus, RAG, REST, Specification-Driven Development (SDD), Structured Outputs, Terraform, TypeScript, Vitest

Verified expert

Patrik G.

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Technical Lead Conversational AI

Dortmund
Patrik G.

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
Verified expert

Andreas E.

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AI Coach and Consultant

Dortmund
Andreas E.

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

Discover over 15,000 top freelancers

Statistics of experts using OpenAI

Aggregated from the professional profiles of matched freelancers.

Experience

19 years (Germany: 16 years)

OpenAI experts in Dortmund have 19 years of professional experience on average. It is 3 years more than in Germany, where the average stands at 16 years.

Position duration

1.8 years (Germany: 2.8 years)

OpenAI experts in Dortmund stay in a single position for 1.8 years on average. It is 1 year less than in Germany, where the average stands at 2.8 years.

Positions per freelancer

14 (Germany: 12)

OpenAI experts in Dortmund have completed 14 positions on average over the course of their careers. It is 2 more than in Germany, where the average stands at 12.

Top business areas

Information Technology, Product Development, Operations

OpenAI experts in Dortmund have gathered most of their hands-on project experience in Information Technology, Product Development, and Operations.

Top industries

Healthcare, Information Technology, Automotive

OpenAI experts in Dortmund are most in demand in Healthcare, Information Technology, and Automotive.

Certification focus areas

Information Technology, Product Development, Human Resources

OpenAI experts in Dortmund earn their certifications most often in Information Technology, Product Development, and Human Resources.

Bachelor's degree or higher

100% (Germany: 91%)

100% of OpenAI experts in Dortmund hold at least a Bachelor's degree. It is 9% higher than in Germany, where the rate stands at 91%.

Master's degree or higher

40% (Germany: 63%)

40% of OpenAI experts in Dortmund hold at least a Master's degree. It is 23% lower than in Germany, where the rate stands at 63%.

Doctorate

20% (Germany: 9%)

20% of OpenAI experts in Dortmund have a doctorate (PhD). It is 11% higher than in Germany, where the rate stands at 9%.

Certifications per freelancer

2 (Germany: 3)

OpenAI experts in Dortmund hold 2 professional certifications on average. It is 1 fewer than in Germany, where the average stands at 3.

Most common languages

German, English, Spanish

OpenAI experts in Dortmund most often speak German, English, and Spanish.

Speak two or more languages

100% (Germany: 97%)

100% of OpenAI experts in Dortmund speak two or more languages. It is 3% higher than in Germany, where the rate stands at 97%.

Based on our profile pool as of 29 Oct 2026.

Daily rate distribution

0% 25% 50% 75% 100%
14% of OpenAI experts in Dortmund charge less than €480 per day.
14% of OpenAI experts in Dortmund charge between €480 and €560 per day.
14% of OpenAI experts in Dortmund charge between €640 and €720 per day.
14% of OpenAI experts in Dortmund charge between €720 and €800 per day.
43% of OpenAI experts in Dortmund charge €800 or more per day.
<€480 €480-​560 €640-​720 €720-​800 €800+

The chart shows how the daily rates of experts in this technology in Dortmund are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.

Discover detailed OpenAI rate benchmarks:

Explore rate insights

Average rates of experts in Dortmund using OpenAI

Rates are based on recent contracts and do not include FRATCH margin.

800
600
400
200
Rate comparison chart
Daily rate avg. 708 €
Germany avg. 756 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

800
600
400
200
Rate comparison chart
Median rate 720 €
Germany median 776 €

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 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

OpenAI experts industry focus

See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.

  • Healthcare (100%)
  • Information Technology (100%)
  • Automotive (75%)
  • Education (75%)
  • Manufacturing (63%)
  • Professional Services (63%)
  • Government and Administration (63%)
  • Retail (63%)

Please note that freelancers can work across multiple industries, so percentages overlap.

About the technology

What OpenAI enables

OpenAI provides foundation models and APIs for text generation, reasoning, image analysis, speech and embeddings. Companies use them to add natural-language interfaces, document intelligence, search, summarisation and workflow automation to existing products. Work can run through hosted APIs or within a controlled application architecture.

Models and APIs

OpenAI work commonly involves the Responses API, chat and multimodal inputs, structured outputs, function calling and embeddings. Strong specialists understand model selection, prompt design, token use, context handling and safety settings. They also know when retrieval-augmented generation is more suitable than fine-tuning.

Typical deliverables

  • Customer-support assistants connected to approved knowledge sources
  • Internal search and document-analysis workflows
  • Structured extraction from contracts, tickets and forms
  • Voice, image and text features in web or mobile products
  • Evaluation pipelines, moderation flows and monitoring

These deliverables must connect cleanly to authentication, databases, queues and existing user interfaces. Production work also requires clear fallback behaviour when a model is uncertain or unavailable.

When companies need specialists

Freelance expertise helps when a proof of concept must become a dependable product, when an existing integration produces inconsistent results, or when teams need a safe way to expose company data to language models. In Dortmund, specialists may support local product, industrial and service businesses remotely or alongside an on-site team. German-language requirements should be agreed early, especially for customer-facing features.

Skills beyond the model

Useful OpenAI professionals combine API integration with Python or TypeScript, backend design, cloud deployment and data protection practices. They can work with vector databases, retrieval pipelines, observability tools and automated tests. Experience with identity management, permissions and human review matters when outputs influence business decisions.

How strong experts work

Strong professionals define the task before choosing a model. They create representative test cases, measure factuality and instruction following, and document known failure modes. They protect sensitive data, control tool access and keep prompts and schemas maintainable. Their delivery includes readable code, deployment guidance and a plan for evaluating model changes over time.

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Frequently asked questions

Everything clients usually want to know about OpenAI, in one place.

Companies use OpenAI to add conversational support, document processing, semantic search, content assistance, voice features and structured data extraction. The technology is most useful when it is connected to verified business data and clear application rules.

OpenAI offers hosted models, managed APIs and multimodal capabilities without requiring a company to operate model infrastructure. Open-source models can provide more deployment control or data locality, so the right choice depends on security needs, quality targets, integration effort and operating capacity.

An OpenAI specialist should usually understand backend development, API security, databases and cloud deployment. Retrieval systems, vector search, evaluation design, prompt versioning and privacy controls are also valuable for production work.

The required depth depends on the risk and scope of the use case. A simple internal assistant may need focused API integration skills, while customer-facing or regulated workflows call for experience with evaluation, permissions, monitoring, data handling and human review.

Yes. OpenAI projects are often handled remotely through repositories, cloud environments, documentation and regular product reviews. Dortmund-based companies should define access rules, meeting expectations and whether German-language communication is needed for users or stakeholders.

With OpenAI, retrieval is usually the better starting point when answers must use changing company information, because documents can be updated without retraining. Fine-tuning can help with consistent style, classification or structured behaviour, but it does not replace a reliable source of current facts.

Look for an OpenAI professional who explains trade-offs, tests against realistic examples and shows how failures are handled. Ask about prompt and schema design, data protection, tool permissions, monitoring and how the solution will be maintained after launch.

Freelancers working with OpenAI should clarify the intended users, source data, security boundaries, acceptance criteria and expected response behaviour. They should also confirm model access, deployment ownership, evaluation responsibilities and how costs and usage limits will be managed.

The average hourly rate of freelancers in Dortmund, Germany who have used OpenAI in their recent projects is 89 €, which corresponds to a daily rate of about 708 € 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 19 years of professional experience, with a single engagement typically lasting around 1.8 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 (25%).

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 (75%).

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 Operations (88%).

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.

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