HTML Experts in Stuttgart

• Task Engineering: Evaluating Coding Agents.
• Asset Creation: Building realistic task environments using datasets and files in German. Crucially, these assets must remain in the target language to genuinely measure multilingual handling.
• Prompting & Translation: finding failure points where AI does not work, in German.
• Implementation & Verification: Supporting the development of robust solutions (reference implementations) and write highly reliable, deterministic verifier scripts (using rubric-based judging only when strictly necessary).
• Calibration & Execution: Analyze execution logs and calibrate task difficulty (Easy to Very Hard) using standard Terminal-Bench run configurations against various model tiers (Haiku, Opus).
• Quality Assurance: Participation in a rigorous, 4-layer human quality control process (creation, human review, calibration review, and audit) alongside automated LLM-based checks to ensure fairness, grammatical accuracy, and benchmark integrity.
• Linguistic Review: Reviewing AI benchmark tasks across Hindi, Arabic, Japanese, Chinese, Czech and Turkish.

Conversion & UX Optimization of a Sales Platform

• Identified the biggest issues across the entire purchase process through a comprehensive UX audit.
• Increased conversion from 0.2% to 25% by developing an end-to-end purchase process, supported by a new information architecture and clearer messaging.
• Accelerated implementation with screen annotations that prevent misunderstandings between design and development.
• Reduced the purchase process drop-off rate from 85% to 15%.

Tools: Figma, MS-Clarity, interaction principles, heuristics

Methodology: Agile project management

Goal: Digitization and implementation of CCD2 requirements within the Consumer Finance systems.

Analysis, identification, and assessment of business requirements, as well as their transfer into technical implementation requirements. Coordination and status reporting of the various requirements. Documentation and process management using UML and BMPN. Cross-functional stakeholder management, UAT testing, data management, API architecture management.

Tools: Jira, Confluence, Visual Code, Sql Developer, Enterprise Architect, MsOffice, Bruno, ALM, Camunda, Figma

• Investigation PoC and exchange and refinement of an existing cloud and IoT power plant control solution for certificate management of renewable energy power plants (solar, wind, biomass and others) of the largest European renewable energy power plant operator in this field, including investigation of the IoT devices used in the field and their integration and network connection with the aim of automated PKI key management.
• Messaging with Kubernetes for large API-connected enterprise applications
• Risk and Attack Vector Analysis, Software Quality & Bug Assessments
• Agile Workload Scheduling via Jira & ConJluence
• Evaluation of message streams Pub/Sub for MQ and KaJka.
• Various tests with “best design approaches” regarding resilience patterns such as Circuit Breaker Designs, Throughput Measurement and Monitoring, Bulkhead Governors - for robust EA design
• Integration of API Management with IBMs API Connect to Kubernetes - for agnostic Microservices API Management Designs. Google Apigee
• Solution Health Check Approaches for Load Burst Situations + Remedy
• Research and investigation of available potential subcontractors in the coordinating role as Solution Manager. CIS20 Controls.
• Dread and Stride Security Assessments.

• Developing the infrastructure and improving existing infrastructure: Jenkins, Gitlab Pipeline, OpenShift, Docker, Helm Chart, Kubernetes, Artifactory, CodePipeline, CodeArtifact, Python
• Documenting solutions in Jira/Confluence
• Supporting other colleagues in different technical areas

• Contributed to the design of the new financial services integration layer and moderated the architectural discussions
• Oversaw the security concept and approval of the application
• Prepared infrastructure setup and best practices for the Kotlin backend

• Development of NLP and LLM POCs for use in manufacturing companies
• Application of advanced machine learning algorithms to analyze production data and develop customized data pipelines for quality assurance
• Design and management of the IAO foundational seminar on AI in industry, including practical training modules

With DIGIDY, I support companies and agencies with the planning, development and ongoing improvement of Shopify and Shopify Plus stores. As a freelance Senior Shopify Consultant, I combine strategic consulting, technical implementation and operational E-Commerce Management – for D2C brands, B2B companies and internationally oriented online retailers.

I support existing teams as a Shopify specialist, take over the management of projects and sub-projects, or support companies as an external E-Commerce Manager. I translate business requirements into specific technical solutions and coordinate implementation with internal teams, agencies and other service providers.

My areas of focus:

• Consulting & Project Management Shopify consulting, requirements analysis, technical planning, feasibility checks and selection of suitable apps and integrations. Project planning, prioritization, coordination and quality assurance through go-live and beyond.

• E-Commerce Management & Ongoing Support Operational and strategic development of existing stores: identifying optimization opportunities, planning measures, improving store processes and coordinating implementation with marketing, development and logistics.

• Shopify Development & Theme Editing Custom programming with Liquid, JavaScript, HTML and CSS. Theme development, theme customization and implementation of UX/UI designs, as well as development of custom sections, blocks, templates and store features.

• Conversion Rate Optimization (CRO) Store audits and optimization of the customer journey – from navigation, search and filters through product pages and the buy box to the cart and checkout. Focus on mobile user guidance, clear purchase decisions and fewer abandoned purchases.

• Shopify Plus & B2B E-Commerce Planning and implementation of B2B stores and retailer portals with custom catalogs, price lists, customer approvals and ordering processes. Checkout customizations with Checkout Extensibility, Checkout UI Extensions and Shopify Functions.

• Internationalization, Shopify Markets & Multilingual Stores Setup and optimization of international store structures with country-specific markets, languages, currencies, prices and product ranges. Implementation of translation processes and localized content, as well as coordination of domains and URL structures.

• Complex Shipping Requirements & Shipping Planning and configuration of shipping profiles, shipping zones and shipping rates. Implementation of product-, customer-, country- and postal-code-dependent shipping rules, as well as coordination of multiple warehouse locations and fulfillment processes via Shopify, apps and integrations.

• Tax Settings & B2B Tax Logic Technical configuration of tax settings, net/gross prices, tax exemptions and VAT ID processes according to the requirements of the company and its tax advisors – coordinated for markets, customer groups and shipping locations.

• Store Setup, Relaunch & Migration Support for Shopify projects from planning through data migration and system integration to launch. Support when switching from existing store systems to Shopify or Shopify Plus.

• Integrations & Automation Integration of ERP, inventory management and other third-party systems via APIs and webhooks. Automation of recurring processes with Shopify Flow and custom integrations.

• AI-Assisted Development, Vibe Coding & MCP Use of Cursor, Codex and AI-assisted development tools for prototypes, custom features and automations. Use of the Model Context Protocol (MCP) to integrate documentation and tools into development processes – with technical review and a focus on maintainable code.

Collaboration as needed: project-based support, management of projects and sub-projects, long-term agency cooperation or ongoing support as an external E-Commerce Manager and Shopify Consultant.

Stuttgart · Remote worldwide · German and English

• Implementing applications with Kotlin and Ktor as microservices
• Using MongoDB in the MongoDB Atlas cloud
• Asynchronous communication of services via Google Pub/Sub
• Using Kotest and MockK for unit tests
• Developing an administration frontend with TypeScript, React and Express.js
• Provisioning environments in GCP using Terraform
• Implementing CI/CD processes with GitHub Actions
• Operating scalable production and test environments in GCP with Kubernetes, Helm and Flux CD
• Monitoring environments with Prometheus and Grafana
• Providing BI data in the Google BigQuery data warehouse

• Process and project management to optimize products and development processes for energy systems
• Technical risk management
• Requirements engineering and system architecture
• System FMEA of power generator units and energy storage modules aiming for generic structures
• Claims management according to Section 313 of the German Civil Code
• Regulatory environment: military and NATO standards, AQAP, VG norms

• Design of a new cloud service
• Requirements Engineering
• API Design (REST API, Kafka)
• Consulting on architecture, feasibility and effort estimation
• Implementation of a microservice architecture
• Implementation of a Spring Boot web service
• Development of REST APIs including business and persistence logic
• Kafka consumers and producers
• Various Excel upload/download scenarios
• Change Data Capture
• Cloud provisioning with IaC/Terraform
• Go-live with 30,000 users
• Operation, support and bug fixing for other services

Environment/tools: GitLab, JIRA, Confluence, IntelliJ, Spring Boot, Java, Docker, Terraform, AWS ECS, Postgres, Apache Kafka, SAP Datasphere, JUnit, Debezium, Apache POI, Hibernate, JPA, Testcontainers

• Development of a microservice application for calculating postings on accounts

• Development of backend components with Java or JEE, Quarkus, Kafka, Rest API

• Development of the test component with mocking frameworks (Mockito)

• Development of integration test components

• Creation of OpenAPI specification format

• Configuration of CI/CD pipeline

• Development of frontend components with React

• Design, further development and optimization of system structures

• Code review

• Java Corretto 21, JEE, Quarkus, Golang

• Reactive programming with Spring WebFlux, Project Reactor

• Git, Azure DevOps for CI/CD pipeline, YAML, Json Swagger UI, Postman, Rest OpenAPI, Kafka Streams, Kafka Connect, Log4J

• Microservices, Jira, Confluence, MySQL, Docker, Kubernetes (deployment via Helm charts)

• Spring Security, OAuth 2, JWT, Sonarqube

• IntelliJ, Maven, logging framework Splunk, Agile method Scrum, Nexus, Vaadin V24, build tool Vite

• React, React.JS, Node.js, Jess/JavaScript, Tailwind CSS, Agile method Scrum, accessibility BITV, Playwright

• Acting as an external sparring partner, organizer, and implementer for mid-sized life science and MedTech companies on key digital topics.
• Focus on quick analysis, clear decisions, and concrete progress instead of long strategy papers.
• Clarifying IT complexity, responsibilities, and compliance risks.
• Developing pragmatic digitalization strategies (including under GxP).
• Conducting quick checks, IT roadmaps, and vendor analyses.
• Supporting projects in cloud migration, system selection, and audit preparation.
• Assisting management with digitalization decisions.

• Consulting services for Enterprise Service Management (Strategic Planning, Requirement Analysis, Tool evaluation process, implementation)
• Project management for ITSM tool implementations (Cloud, On-Premise)
• Optimization and maintenance of Ivanti Service Manager installations (User acceptance, efficiency, workflow configuration, CDMB structure, process automation, non-IT areas, roadmap planning, release upgrades)
• Presales support for Ivanti Service Manager (Product demonstrations, Proof of Concepts/POC, technical concepts)