Prompt Engineering Experts in Cologne

PLANT-MY-TREE®-per-order

The application enables Shopify merchants to automatically place tree-planting orders for every incoming order. By integrating ecological contributions directly into the purchase process, the manual effort for tracking and billing reforestation initiatives is eliminated. The system increases transparency for end customers through real-time visualizations of the ecological impact directly in the storefront. The architecture is based on a modular monolith with Spring Boot in the backend and an integrated React app inside the Shopify admin area. The solution uses webhooks to capture order data in an event-driven way and integrates the weclapp ERP system for automated monthly invoicing. An app proxy mechanism provides dynamic statistics such as CO2 compensation and planted trees without any performance loss for the merchant shop.

Tasks:

• Design of the modular software architecture based on Spring Modulith to ensure high maintainability
• Development of the event-driven business logic for evaluating Shopify orders via webhooks
• Implementation of automated invoicing by connecting the weclapp REST API
• Building the frontend using React Router and Shopify App Bridge for native integration
• Design of the database model and implementation of the persistence layer with JPA/Hibernate and Prisma
• Integration of internationalization processes for global use in the frontend and email communication
• Automation of deployment processes using Docker and GitLab CI/CD

Project skills: Java 25, Spring Boot, Spring Security, Spring Modulith, Hibernate, JPA, REST API, PostgreSQL, Maven, Liquibase, React, TypeScript, React Router, Vite, Node.js, Prisma, Zod, Docker, Docker Compose, GitLab CI/CD, Shopify CLI, Shopify App Bridge, Polaris, weclapp, i18next, Lombok, Vitest

• Integration of medical modalities (including ultrasound) into the existing IT infrastructure (DICOM, HL7) – put into operation within the planned timeframe.
• Administration and optimization of PACS systems for efficient archiving and distribution of radiology image data across multiple locations.
• Ensuring consistent data quality and seamless interoperability in data exchange between HIS, RIS, and PACS.
• Close collaboration with medical staff to analyze and digitally optimize clinical workflows.
• Requirements management and test coordination when implementing clinical requirements in complex IT structures.

• Consulting and implementation of digitalization projects nationally and internationally for start-ups, SMEs and large corporations
• Focus areas: design systems, RAG & automations
• Tools and technologies: Claude, GPT, Gemini

AI Strategy & Enablement for SMEs Management consulting – SMEs (e.g. marketing boutique, IT & office services)

Concept and delivery of structured AI introduction and strategy workshops for small and medium-sized businesses. Result: Practical AI status assessment, prioritized use case list, and management decision template as the basis for the next steps in the company’s AI development.

Activities

• Needs analysis and individual preparation of the consulting formats
• Facilitation of a structured AI status assessment including vision, mission, and target picture
• Identification and prioritization of relevant AI use cases and action fields
• Creation of management decision templates and roadmaps
• Raising awareness for opportunities, risks, and success factors of AI introduction
• Support for first customers with AI-supported automation scenarios
• Supporting people and teams through the change process of AI introduction (CM)

Methods / Tools / Technologies

Methods:

• AI status assessment & use case analysis
• Workshop moderation / facilitation
• Requirement Management
• Change Management (PROSCI)

Tools:

• Generative AI tools (e.g. ChatGPT, Claude)
• Automation/AI coding tools (e.g. n8n, Claude Code, Visual Studio, Antigravity)

Technologies:

• Prompt engineering
• AI workflow automation

PFS-Matching-App

• Integrated an intelligent LLM chatbot using LangChain4j, enabling conversational AI, context-aware question answering, document summarization, and autonomous tool execution.
• Implemented Retrieval-Augmented Generation (RAG), prompt engineering, and AI agent workflows to connect large language models with enterprise data and backend services.
• Developed RESTful APIs and secure backend services to support AI-driven interactions and business processes

• Developed a shop website
• Integrated an AI language model
• Developed tools for AI-powered webhooks
• Technical tools: REACT.js; Elevenlabs; MCP; n8n; HTTP

• Further training to become a certified AI expert in the company
• Fundamentals of AI
• AI tools
• Prompt engineering (creation of professional prompts)
• (Advanced) Process automation with AI and make.com
• AI in marketing and sales
• Legally compliant use of AI in companies
• Intelligent knowledge management
• AI in customer management
• Developing AI guidelines for the company
• AI integration into the company

Set up communication during an ongoing restructuring process and made it operational.

• Advised companies on implementing the SaaS solution for digital project and portfolio management by analyzing existing workflows and data flows
• Responsible for the entire B2B sales cycle: from lead generation and needs analysis to product demos, ROI justification, and contract closing
• Translated complex business requirements into technical solution concepts and coordinated with customer success teams
• Identified automation opportunities in customer processes and translated them into efficient software logic (workflows, rules, approvals, dashboards)
• Prepared and conducted executive readouts, including defining next steps, managing forecasts, and documenting projects
• Analyzed company data to identify opportunities for machine learning and automation scenarios to improve efficiency
• Worked closely with interdisciplinary teams to implement MS Office including MS Copilot PoCs and sustainable improvements in the customer environment

• Sponsor of two spin-off products of the AI and BPM tool BPMaaS called „kionera“ and „myATHENA“
• Definition of project goals and strategic development of the products
• Design and build-up of the kionera platform on shared or dedicated GPU servers with Docker and open-source LLMs
• Provision of the API for internal applications
• Development and design of managed services based on the ADONIS BPM system from BOC Group
• Support with feature definition and planning of ADONIS/BPMN trainings
• Creation of a WordPress website including a subscription payment gateway

• Led a team of junior Research Engineers, providing mentorship, technical guidance, and career development support to foster their growth in deep learning and machine learning engineering.

• Building a company-wide grassroots movement with over 500 employees around digital responsibility topics, tech ethics, and a human-centered focus
• Connecting top-down initiatives from innovation, corporate responsibility, and compliance with engaged employees
• Organizing flagship events like barcamps, dialogue formats, workshops, and discussion series
• Promoting ethical reflection, diversity, and societal perspectives in innovation and decision-making processes