Obsidian Experts in Germany

Katarzyna G.

Finance Consultant

Heltersberg

Last position:

Interim Financial Accountant / Accounts Payable at Consulting for an alcoholic beverage manufacturer

Supported monthly and annual closing activities
Checked incoming invoices for formal and factual accuracy
Posted incoming invoices
Contact person for internal departments on accounting matters
Created and maintained vendor master data
Processed open items
Took on additional accounting-related special tasks
Managed the functional mailbox
Performed payment runs

Training and knowledge transfer – Accounts Payable:

In addition to the tasks above, I was responsible for training and transferring knowledge to 8 employees of an external service provider in India who took over the accounts payable activities:

Conducted structured training and practical guidance throughout the accounts payable process
Trained employees in checking and posting incoming invoices, including formal and factual checks
Taught vendor master data maintenance, open-item processing and payment runs
Trained employees in using the functional mailbox and communicating effectively with internal departments
Explained accounting procedures, controls and company-specific accounts payable requirements
Conducted “Training on the Job” using practical posting cases and real business transactions
Supported the team in independently carrying out accounts payable processes and resolving accounting questions
Checked the quality and accuracy of work results and provided continuous feedback and coaching
Supported the transfer of accounts payable processes to the external service provider and ensured structured knowledge transfer and an orderly handover
Supported a smooth transition by documenting processes, clarifying responsibilities and ensuring consistent application of accounting requirements

Software: JDE, ELO, SAP Concur

Fred H.

Senior Java Architect and Developer | Domain Architect (DDD, Knowledge Systems)

Munich

Last position:

Software Architect and Developer at Personal project

Recurring problem in my own AI-assisted projects: requirements analysis, use cases, and architecture decisions can be created quickly with AI support, but remain difficult to follow and scattered across Markdown files – knowledge is lost as soon as it is no longer in the context window. arknet turns requirements engineering and architecture knowledge into structured, verifiable data instead of plain text: requirements, use cases, and architecture decisions form a consistently linked knowledge graph, traceable from requirement to architecture decision – queryable by both people and AI agents. Technically based on RDF/OWL and a custom MCP server.
Result: Working MCP daemon, Docker image published automatically to GHCR, nine hexagonal modules, eleven ADRs (including an Open-Core licensing model). Requirements engineering and Ubiquitous Language hexagons are active. Public as a Community Edition under Apache-2.0 since 07/2026 (github.com/kogn-io/arknet), together with the Claude Code plugin and GHCR image; Open-Core model.
Label: Java, Maven, RDF, RDF4J, OWL, SPARQL, Model Context Protocol, Spring AI, Docker, GitHub, Git, Claude Code, Obsidian, DDD, Hexagonal Architecture, ArchUnit, JUnit, AssertJ, Interface Development, Software Architecture, Continuous Integration, Knowledge Management

Marc E.

AI Consultant

Peißenberg

Last position:

Founder & AI Consultant at Omniance

Local AI and agentic systems for SMEs and corporations, from use case to production
Co-founded with Dr. Artur Hahn
First engagement: AI use case workshop at a corporation, with a rollout to replace approx. 1 200 cash register systems, prioritizing 15 AI use cases
Developed three technical components: OmniExtract (invoice-delivery note matching), WING (Voice-to-CRM), OmniConnect (AI middleware + chat)
Designed a 12-month learning architecture for an AI consultancy
Operational use of AI-powered knowledge management

Hamza K.

Academic Research Contributor in Health Sector (Volunteer)

Last position:

Academic Research Contributor in Health Sector (Volunteer) at n/a

Acted as technical consultant to optimize multi-layer ensemble models combining ResNet, CNN-BiGRU-Attention, and XGBoost.
Guided implementation of a Logistic Regression meta-learner to solve class imbalance problems, achieving 92.86% accuracy and 0.9644 AUC on PTB-XL and Chapman-Shaoxing datasets.

Peter S.

Senior UX Consultant · Product & Service Design

Last position:

Service & Strategic Experience Designer at Strategic Consulting & End-to-End Design

Concept and implementation of data-heavy platforms for enterprise customers
Design of complex AI-based interactions (chatbots, voice control, semantic search)
Stakeholder management with more than 10 participants in cross-functional teams
User research: interviews, usability tests, value validation
Definition of quality metrics and execution of value analyses

Tools & methods: Figma, Adobe XD, Miro, Chat GPT, Claude | Scrum, Kanban, SAFe, Lean UX

Selected clients: VW Group, Volkswagen, BMW, Cariad, ABUS, Gieseke & Devrient, Hamburg Senate Chancellery, German Red Cross, Deutsche Bahn, Immoscout24, Relynk

Victor O.

Senior Software & Security Engineer · Systems Analysis · Automation Architecture

Last position:

AI Training Engineer at Confidential AI Research Client

Codebase Evaluation & Problem Design: Designed and stress-tested complex software engineering problems against large open-source Python codebases (including pandas), requiring deep context acquisition and architectural understanding to produce well-scoped, realistic problem statements aligned to strict correctness guidelines.
Agent Failure Analysis: Assessed LLM coding agent solutions for correctness and completeness, identifying meaningful failures across edge case handling, dtype behaviour, and multi-column NaN propagation logic; documented findings with precision for downstream evaluation use.
Programmatic Test Suite Development: Authored comprehensive pytest suites to programmatically verify agent-generated solutions against defined requirements, with deliberate coverage of boundary conditions and failure modes not caught by naive implementations.
Containerised Environment Engineering: Built and debugged Docker environments for reproducible agent execution, including git-based repository provisioning, dependency pinning with npm ci, and multi-stage Dockerfile authoring across Linux-based containers.

Sebastian B.

Senior Product Engineer · AI & Agentic Development · Technical Product Lead

Much

Last position:

Product & AI Consultant

As a freelance employee / independent consultant, I supported a wide range of development projects and advised clients on digital innovation initiatives. A common role was acting as project manager / product owner at the interface between the client and the development team.

Product Consulting — (Fractional) Product Owner, Freelance Product Management
AI Services — AI consulting, training, vibe coding / agentic engineering, AI agents
Tech Services — full-stack web development, design/UX, MVP delivery.

German R.

Freelance Technical Product Owner & AI Product Builder

Stuttgart

Last position:

Freelance Technical Product Owner & AI Product Builder at Neckarshore AI / Freelance

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

Enrique G.

Data Security

Hamburg

Last position:

Security Architect at Capgemini

I implemented a Zero-Trust architecture for robust, military-grade maritime container mini data centers based on VMware & Tanzu to support containerized GIS workloads for ground forces. The main focus was on securing communications, workload protection, and data access in contested electronic battle environments affected by jamming, interception, signal manipulation, and constantly changing operational conditions. I designed and architected use cases so that every element of workload, identity, and system could continue to operate independently and securely even in degraded or disrupted scenarios. In parallel, I defined the enterprise and solution security architecture with LeanIX, Bizzdesign, and HOPEX as enterprise architecture, repository, and governance platforms to maintain architecture inventory, relationships, traceability, target pictures, and security governance in complex environments. For the architectural designs, I used Sparx Enterprise Architect to describe formal architecture views, interfaces, trust boundaries, and system architecture in both IT and OT environments. IriusRisk was used for threat modeling of the solution to identify architecture-driven risks, derive security requirements, and detect countermeasures and design gaps directly from the solution models. Risk and compliance management was supported with Archer. Architecture decisions, control gaps, and operational risks were translated into controlled governance and auditable compliance measures. For documentation, collaboration, and visual design, I used Confluence to maintain Architecture Decision Records, Security Blueprints, and workflows. I used Lucidchart and draw.io to create design artifacts tailored to stakeholders. I also defined OT security concepts with support from electrical and mechanical engineers in the areas of oil, vehicle onboard systems, rail, power plants, pharma, gas turbines, and nuclear technology. I created the end-to-end OT security strategy, starting with global policy, developed into standards and procedures, and finally aligned with Bell-LaPadula, Purdue Model, SABSA, TOGAF ADM, CENELEC 50701, IEC 62443, and NIST standards. In addition, I worked with engineering team leads to identify critical KBP assets and place them under protective measures that segmented SCADA, PLC, and HMI assets. I drove collaboration between Security, IT, and OT teams to create standardized workflows and use cases for the OT security solution catalog, while integrating Defense-in-Depth and Zero-Trust principles into operational environments. A key part of my work was integrating multidisciplinary engineering, security, and operations stakeholders into a unified security blueprinting strategy and ensuring that architecture, threat modeling, governance, and documentation were technically strong and operationally practical.

Jens H.

#52 Test Manager in Safety-Critical Infrastructure

Köln

Last position:

#52 Test Manager in Safety-Critical Infrastructure at Telecommunications Company

Network elements, network, operational and operator-related systems
Supporting around 20 different products (managed agile)
Requirements analysis and management (functional and non-functional)
Test concept and planning (scope, test phases, effort, schedule, resources, organization, etc.)
Aligning approach with clients and service providers
Managing and assisting in creation of test cases for system, integration and end-to-end tests
Guiding and supporting test execution
Defect management and planning bug fixes with external providers
Preparing and facilitating workshops
Regular reporting and creating automated test reports
Further development of agile testing methodology and configuration of supporting tools
Conceptual support in developing a quality seal for rating product and service quality of internal and external providers
Requirements engineering based on ISO/IEC 25010, Scrum, SaFE
BMC Remedy, Atlassian Confluence, Atlassian Jira (including plugins Xray, Structure), Microsoft Office (incl. Visio), Obsidian, doxis document management system, Gitlab, Obsidian

Shriya S.

Working Student

Last position:

Product Manager at passify

Leading the setup of Passify’s internal automation and risk management portal, connecting workflows across teams through SharePoint and Power Automate.
Moderating retrospective workshops and creating PRDs and design tickets during PDLC.
Supporting ISO 27001 documentation and compliance, focusing on customer support, user registration, and internal communication processes.
Helping align design, development, and operations in a modular design cycle, ensuring each release meets both business and user needs.
Contributing to feature planning and validation for subcontractor flows, training dashboards, and terminal portal improvements.

David L.

Design & Product Lead

Last position:

Team Lead Product Design at ABS Safety GmbH

Established design as a discipline within an industrial company: rebuilt the team structure, introduced infrastructure and built a strong UX reputation – under capacity constraints and during ongoing operations.

Led 7 designers across 3 teams; restructured into a hybrid model with a central design pool
Introduced a design system, UX debt backlog, research repository, user feedback formats and initial product metrics
Built a career model and developed and supported the team individually
AI enablement: weekly show-and-tell sessions on prototyping, research and handoff

Aman M.

Guest Researcher

Köln

Last position:

Guest Researcher at Max Planck Institute for Neurobiology of Behavior

Coordinated feedback and milestones with international co-authors to streamline publication
Directed data curation and final analysis using Python and Matlab
Accelerated the final publication timeline by efficiently managing figure preparation and data traceability

Denys Z.

Technical Writer

Augsburg

Last position:

Technical Writer at Omilia Natural Solutions

Creation of technical documentation for conversational AI products
Development of user and API manuals (JSON, Markdown)
Use of Git, Jira, Confluence for version control and task tracking
Collaboration with engineers and PMs for accurate content

Matthias L.