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• Led the end-to-end delivery of enterprise full-stack web applications by driving requirement analysis, solution design, frontend and backend development, database design, API integration, code reviews, team coordination, Agile execution, CI/CD deployments, production support, performance optimization, security implementation, and stakeholder collaboration to deliver scalable, high-quality software solutions.

• Design and implementation of a Laravel backend API for provider-based geo search, feature details, boundary geometries and neighborhood detection.
• The API serves as a server-side proxy, cache and enrichment layer, protecting credentials for external geo services and persisting features, localizations, geometries, hierarchies and neighborhood relationships in MariaDB.
• Key areas included normalization of autocomplete and feature data, caching strategies for expensive boundary/polygon requests, spatial processing of GeoJSON and MultiPolygon geometries, as well as neighborhood detection using hierarchies, bounding box filters and topology checks.
• Additionally, separate production and diagnostic endpoints were created, along with status and error catalogs, discovery logging, a Docker development stack, API documentation, and unit and feature tests.
• Technologies: PHP 8.3, Laravel, REST API, geo data API, GeoJSON, MariaDB Spatial, Eloquent, Laravel Queues, PHPUnit, Mockery, Docker, Docker Compose, API design, geocoding, boundary data, spatial queries.

• Overall responsibility for marketing, sales communication, and company image
• Active sales and strategic, expert customer advice
• Maintenance, development, and technical support of the company website
• Concept and implementation of print and digital media
• Creation of CAD data, technical drawings, and renderings
• Product visualization for marketing, sales, and presentation purposes

Conceptual design and implementation of a modular customer portal based on Laravel.

The focus was on defining a maintainable system architecture with broad use of Domain-Driven Design principles (within the Laravel architecture), introducing automated quality assurance processes (test strategy, CI integration), and preparing an auditable operation (logging, traceability of changes) in an AWS-based infrastructure, taking IT security standards according to NIST and process requirements according to ISO 9001 into account.

Achievements:

• Analysis and structuring of business requirements in close coordination with stakeholders
• Documentation of the system architecture and infrastructure incl. change and release management
• Design and implementation of an interface for integrating SAP systems
• Planning and implementation of automated tests for quality assurance
• Implementation of security and compliance requirements, including SBOM generation, software license management, and QA processes
• Technical consulting and support for the internal IT team
• Introduction and establishment of AI-supported development processes (Spec-Driven Development), including AI-readable specifications, integration of AI instructions into the development environment, and training developers for productive use

Technologies and tools: SAP, Docker, ddev, PHP 8.4, Laravel, Filament, C4 Model, Architecture Decision Records (ADR), Mermaid, PlantUML, Spec-Driven Development, Claude, GitHub Copilot, Codex

• Conducting training for personal and professional development
• Promoting self-motivation, goal setting, and time management
• Coaching in career, finance, and personal development

PHP and React redesign of a web-based ERP system.

• Development of the header and parts of the navigation
• Development of various modules in React, e.g. calendar, chat, and various tables

Development of a comprehensive web SEO tool from scratch. Product Owner, Vibe Developer, Tester

SEO, SEA, GEO, integrations: OpenAI, Google Search Console, PageSpeed API, Google Insight API, Google My Business, SerpAPI, payment provider API.

Claude Code, GIT, GitHub, PHP, MySQL, Alpine.js

• Modernized the homepage of a luxury residential building for a better user experience and contemporary design
• Developed and implemented the website and modules using current web technologies
• Optimized for SEO to improve visibility in search engines
• Created a modern and professional appearance that enhances the building's image
• Increased efficiency in content maintenance by using a CMS
• Technologies: HTML5, HTML, CSS3, CSS, JavaScript, Umbraco, C#, .NET

In the course of migrating from Shopware 5 to 6, we decided to completely rethink the e-commerce landscape of the regional FUNKE online shops. Primary goals were, in addition to creating a reliable platform with multiple sales channels for each regional brand, the rebranding and brand identity aligned to these brands.

Secondarily, the rebranding fed into the CI for marketing materials, which in the daily newspaper sector still has a strong focus on print alongside digital performance ads in the target audience segment.

• PHP application development for the following news portal CMS:
• lebensmittelzeitung.net
• textilwirtschaft.de
• horizont.net
• iz.de
• fvw.de
• ahgz.de
• horizont.at
• agrarzeitung.de
• food-service.de
• fashionmagazine.it

• Frontend development and implementation of various designs (landing pages, overview pages)
• Responsible for the content and updates of the Datalyze Solutions company website
• Joint planning and development of an admin application for listing and locating real estate projects (CBRE)
• Joint planning and development of extensive solutions for automatic staff allocation in plants (Bosch)
• Backend development of various small projects with different stacks
• Tech stack: GitLab CI/CD, Elixir, Phoenix Framework, Ecto, PostgreSQL, Docker, Hetzner, Traefik, NGINX, Python, Flask, Next.js/React, Leaflet, GeoServer, TypeScript, MongoDB

• Web development with Blazor
• Two-factor authentication for Blazor applications
• Uploading and downloading files
• Bug fixes for existing applications
• Programming interfaces
• Integration of third-party tools and technologies
• Creation of developer tests (unit tests)

• Integrating system architecture, business analysis, requirements engineering, and process consulting
• Managing business unit needs toward IT and implementation
• Capturing requirements in JIRA and breaking them down into epics
• Overseeing internal projects and programs, including stakeholder management and reporting
• Handling requirements from traditional IT developments to IoT integrations and SAP subsystem replacements
• Implementing current legal regulations (MAKO, EnWG, EEG, GWG, StromGVV, GasGVV, StromNEV, GasNEV)
• Applying agile methods (Agile, SAFe, ITIL, Scrum, Kanban, DDD, IaC, CI/CD, DevOps, automation, ETL, OOA, OOD, MDA, BPMN, BPM, UML, marketing automation, data science, ML, AI, GenAI, LLMs)
• Using tools like JIRA, SharePoint, MS Office, MS Project, MS Dyn CRM, VMware ESX/ESXi, BSI IT-Grundschutz, BSI C5, NIST, MS Azure, Typo3, mail automation, Docker, Kubernetes, OpenStack, OpenShift, Terraform, Ansible, SQL, REST, SOAP, Git, GitLab, LoRaWAN, SAP IS-U, S/4HANA, USU, KUGU, AbSys, sensors, MQTT

• Re-architected a web application that had grown over years, modularizing tightly coupled components

• Reduced response times from several seconds to <50 ms

• Removed performance bottlenecks

• Simplified architecture so internal teams can implement features on their own again