GitHub Experts in Stuttgart

• Focus: system architecture, cloud-native platforms, microservices, API design
• Product: Pflege-Pfad is a digital matchmaking platform that connects relatives of people in need of care directly with verified care services and caregivers - without an agency and without ongoing fees.
• Business analysis & process design:
• Analysis of the German care market and identification of the key pain points of both target groups.
• Modeling of the core business processes: registration, verification, care request, application, placement, and rating.
• Definition of the business model as a freemium/premium model with optional contact unlocking.
• Creation of user stories and requirements documentation for relatives, care services, and administrators.
• Design of trust and quality assurance mechanisms with document upload, admin review process, and rating system.
• Coordination with stakeholders and validation of product decisions with potential users.
• Technical implementation:
• Design and implementation of the entire platform architecture as a solo developer.
• Design and implementation of a REST API with Spring Boot and Kotlin, including JWT-based authentication.
• Development of the frontend as a single-page application with Angular 17.
• Implementation of the AWS infrastructure with EC2, RDS PostgreSQL, S3, CloudFront, and IAM.
• Document upload with AWS S3 via presigned URLs for verification of care services.
• Email notifications via Resend API.
• AI-supported care service search via OpenAI API.
• Implementation of complete user flows such as registration, login, password reset, and placement process.
• Building an admin panel for user and care service management as well as analytics.
• CI/CD with GitHub Actions and containerized deployments with Docker.
• End-to-end tests with Playwright.

Technologies: Kotlin, Spring Boot 3, Spring Security, JWT, JPA/Hibernate, PostgreSQL, Angular 17, TypeScript, RxJS, AWS (EC2, ECS, S3, CloudFront CDN, RDS PostgreSQL, IAM), nginx, GitHub Actions, Playwright, Maven, Git, OpenAI API, Resend API, Docker, Scrum, i18n (DE/EN/TR), Kiro, feature-flag architecture.

Designed and developed an AI-powered automation platform using n8n to analyze social media niches, identify target audiences, and automate marketing strategy generation. The solution combined AI agents, workflow orchestration, and data analysis to automate research processes and generate data-driven insights.

• Designed and implemented complex automation workflows using n8n
• Developed AI-powered analysis agents for market and audience research
• Integrated multiple APIs and AI services into automated workflows
• Built automated market, competitor, and target audience analysis pipelines
• Leveraged Large Language Models (LLMs) for information summarization, classification, and prioritization
• Containerized and deployed the platform using Docker

Technologies: n8n, AI Agents, OpenAI APIs, Prompt Engineering, LLMs, Docker, Linux, REST APIs, Webhooks

• Development of a SaaS platform for esports teams with roles, scheduling, statistics, and billing
• Planning and implementation of the architecture, external API integrations, and operations
• Stack: Laravel 13, React 19, TypeScript, PostgreSQL, Redis, and Stripe

Two complementary tracks: (a) building my own AI products and open-source tools under the Neckarshore AI brand, with a focus on AI-supported multi-agent development processes and documentation automation; (b) freelance support for industrial, logistics, and financial companies in IT-related transformation projects.

Current product portfolio under the Neckarshore AI brand:

• Omnopsis Documenter — AI-powered documentation engine: generates compliance, technical, and release documentation from Git, Jira, and Confluence. 500+ automated tests, 100+ API endpoints, RBAC, monitoring stack.
• TrustScope — trust analysis for public GitHub repos: deterministic three-pillar report (Security & Supply Chain, Governance, Community) based on OpenSSF Scorecard, with constructive fix suggestions instead of a single misleading score.
• md-viewer — dependency-free Markdown viewer for macOS (Finder Quick Action) and web, split view of rendered document and raw text.
• Obsidian Vault Autopilot — AI-supported vault automation for Obsidian × Claude Code: sorts the inbox, renames notes, enriches frontmatter.
• Phonesis Voice Bank — voice archive for families, hospices, and cultural archives (guided recordings, inheritable archive, optional voice cloning); currently in the GDPR compliance phase (Art. 9, biometric data).
• Multi-Agent Development Process — 12+ specialized agents (architecture, implementation, security, refactoring, marketing) with structured handoff protocol, parallel execution, and automated quality assurance — powers the entire product development.
• Freelance consulting: Technical Product Ownership for production, logistics, and compliance/AML systems; steering international rollouts including test, cutover, and change management.

Stack: NestJS, TypeScript, PostgreSQL, Redis/BullMQ, Next.js, Claude Code (Opus), Docker, GitHub Actions, Vercel

• 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

• 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

• AIX/Linux system administrator: deployment of LPARs (Logical Partitions) for SAP Kernel Development
• C/C++ SAP kernel development and integration to SAP HANA Database
• C/C++ programming and software integration, support for SAP kernel on AIX system; development and testing on SAP VDI
• Example: development of the ABEC Tool (AIX Build Environment Checker) to create SAP build environments for debugging process and benchmarking
• Benchmarking and test execution of SAP kernels (test from the communication to the SAP HANA Database and to SAP NetWeaver) on AIX
• Automate the SAP kernel build via Jenkins and benchmarking over crontab jobs
• New C/C++ compiler design and testing (based on Clang++ and LLVM)
• Customer ticket handling to resolve SAP kernel bugs and build failures
• SAP kernel development with Rust programming language, migrating some sub-kernel projects from C/C++ to Rust because of Rust's memory safety model, ownership system, and concurrency features
• Refactoring selected components in Rust and integrating them with existing C++ codebase via FFI

• Rebuilt the online shop, implemented a theme from the Shopware store with custom adjustments, delivered a custom design for the header & footer, added custom functionalities, migrated data from the previous xt:Commerce shop, relaunched the shop, optimized performance using Cloudflare

• Consulting, frontend development, project management, leading a team of developers

• Project management: Jira, MeisterTask, BugHerd

• Team communication: Microsoft Teams, Google Meet, Zoom

• Tools used: PHPStorm, BrowserStack

• Development and optimization of software architectures for safety-critical embedded systems in the automotive sector according to ISO 26262 and ASPICE.
• Performing safety analyses (FMEA, DFA, FTTI, HARA) for safety-relevant software.
• Technical consulting and support in acquisition processes for safety-critical software projects.
• Evaluating AUTOSAR architectures and integrating safety-relevant software solutions.
• Collaborating with OEMs and suppliers to ensure compliance with safety standards and process conformity.
• Leading functional safety assessments and ASPICE assessments.
• 2016–2019: Body Computer Module – Role as Lead Software Integrator. Responsible for the software integration of safety-critical ECUs, implementation of AUTOSAR software components, and system integration testing.
• 2019–2022: PowerNetGuardian – Role as Software Architect. Developed a safety-critical software architecture, ASIL decomposition, and created software safety requirements according to ISO 26262 and ASPICE.
• 2022–Present: PowerNetGuardian Plus – Role as Lead Software Architect. Responsible for the overall software architecture, safety and cybersecurity concepts, FMEA analyses, and technical consulting during OEM negotiations.

• Analyzed business needs and collaborated with stakeholders to translate them into technical requirements and user stories, guiding AI solution development within Agile Scrum teams.
• Designed, built, and deployed scalable Large Language Model (LLM) solutions supporting digital transformation initiatives, focusing on client requirements and outcome-driven delivery.
• Implemented Retrieval-Augmented Generation (RAG) pipelines using vector databases to enhance knowledge services that support business decision-making.
• Collaborated closely with cross-functional teams, including data scientists, product managers, and business analysts, to ensure AI solutions aligned with business goals.
• Provided end-to-end client support, ensuring smooth adoption and resolving operational issues in production deployments.
• Engaged in continuous learning and training to enhance consulting skills and agile project management.
• Planned and created test cases, executing manual and automated testing using Selenium and Jira for enterprise applications.
• Documented test results and collaborated with development teams to ensure high-quality software delivery.

• As Co-Founder of horyzn.io, I specialize in driving digital transformation for the automotive and mobility industry.
• Work closely with clients to uncover and leverage digital and data-driven opportunities.
• Provide strategic guidance and hands-on support to navigate complex digital landscapes and optimize customer experiences.
• Deliver tailored solutions that drive measurable results for clients.
• Commerce & UX
• Omni-Channel Strategy
• Digital User Experience
• Customer Journey Mapping
• web3, Metaverse & NFTs
• Digital Business Engineering
• Requirements Engineering
• Digital Processes & Organizations
• KPI & Dashboard Design
• Agile Coaching

• Technical support and further development of client sites on the WordPress CMS (hotel industry)
• Further development of our partner site on the Kirby CMS
• Customization of the ZeroOne theme with a focus on features like booking systems, page filter plugins, and interactive animations

• Developed an agentic RAG system to support the development organization.
• Technologies: Python, LangGraph, Qdrant, Claude Code, GitHub.