Java Experts in Hamburg

• Designed and moderated a NIS2 preparation workshop for RAS Reinhardt Maschinenbau GmbH and its IT service provider Catuno GmbH. Together with executive management and IT leadership, the current status was assessed, an initial GAP analysis was conducted and areas for action were prioritized based on ISO 27001.
• Developed an ISO-27001-based regulatory framework (ISMS) for NIS2 compliance, including a structured current/target GAP analysis, targeted improvement of the security maturity level and preparation of the organization for NIS2 audit readiness.

• Owning RAG, LLM-System, ML-ops-Pipelines for various startups in Insurance, Banking, Energy (KRITIS)

VALUE ADDED:

The structured analysis and further development of business requirements and processes is driving the modernization of contract administration in a focused manner. Complex business matters and dependencies are made transparent, optimization potential is identified, and transferred into scalable solution approaches that enable as much straight-through processing as possible. This creates clearer and more efficient processes as well as reliable decision-making and implementation foundations for business departments, architecture, and development.

• Development of business requirements and processes for the further development and modernization of contract administration
• Creation and further development of business concepts, process descriptions, and decision-making documents for implementing new and optimized processes
• Analysis of existing processes and identification of optimization potential to simplify and scale processes
• Structuring of complex business matters in a dynamic project environment to ensure transparency and traceability for all involved
• Identification and clarification of business dependencies and interfaces, especially in interaction with adjacent systems and departments
• Contribution to business target models and development of solution approaches for new, scalable processes that also enable straight-through processing
• Leadership and moderation of business workshops to coordinate and further develop requirements with internal stakeholders from business departments, architecture, and development
• Prioritization of business topics and requirements for targeted implementation
• Support with testing, reviews, and quality assurance, including the creation and coordination of business test cases to verify the implemented solutions
• Use of SharePoint and Kanban to document and manage tasks

• Consulting, training and coaching in the financial sector on strategy, organization and IT topics

• MorgenFund: Advising the operator of a fund platform on software selection for a sub-ledger "Cash Accounts" based on virtual IBANs (VIBAN)

• Structuring requirements, market screening, preparing RfIs, communicating with vendors and conducting the selection process

• UniCredit/HypoVereinsbank: Workstream Lead "Booking and Customer Reporting" in the payment transformation project "PULS"

• Business analysis, preparing business requirements and coordinating the solution items as part of the functional specification with the bank's IT service providers

• Business analysis of SEPA CT and SWIFT MX (.camt-, .pain- and .pacs- formats), change management, team leadership for a virtual team of fifteen line experts and stakeholder management

• equensWorldline Germany: Program management for three projects of the SWIFT Service Bureau (CBPR+, ESMIG and Euro1Step1 migration) as part of the SWIFT MX migration

• Managing individual project leads with regard to cross-project goals and requirements; reporting to internal and external committees and stakeholders; coordination with dependent projects and programs

• Project management/PMO: Interim project management, deputizing for project leads, resource planning, budget and cost management, general PMO activities

Cloud Journey Kickoff on STACKIT

• Helped the client kickstart their cloud journey on sovereign EU STACKIT platform.
• Bootstrapped IAC & GitOps architecture with Opentofu and ArgoCD.
• Setup platform fundamentals for a fresh, holistic cloud experience: Kubernetes, external secrets, certificate management, gateway API, DNS & routing, observability basics.

• Building a data integration platform for high, medium, and low voltage assets for contextual analysis of time series with master data from the SCADA control system (IEC 60870 104), INIS, and SAP.
• Responsibility for the architecture and implementation of the solution, as well as sparring partner for the Product Owner.
• Use of Kotlin, Spring Boot, Maven, TimescaleDB, PostgreSQL, liquibase, Elements IoT, Docker, Kubernetes, Grafana, Python, jupyter, and various API gateways.

• Defined and established the areas of responsibility
• Built a governance model for the department and its areas of responsibility
• IT strategy, project management, process management, and quality and sustainability management
• Developed a communications strategy for the group
• Created the IT strategy
• Designed templates, guidelines, and processes for consistent ways of working
• Recorded strategic guidelines and grouped ongoing projects – derived a roadmap for strategic planning
• Reviewed ongoing projects
• Prepared staffing calculations and capacity planning
• Defined job profiles

• Assumed responsibility for backend architecture and technical strategy, planning and leading the platform's evolution in close collaboration with the CTO
• Simultaneously drove the development of new features for the housing and tenant management platform, balancing high-level architectural design with hands-on implementation
• Utilized AI-assisted workflows (with tools such as Claude Code, Codex, Cursor) and worked on AI-based features (with tools such as N8N, Mastra, ElevenLabs)

Technologies: Node.js, TypeScript, React.js, Next.js, PostgreSQL, Google Cloud, Docker, Kubernetes

Full overall responsibility: product, technology, compliance and go-to-market

• Delivered an enterprise MVP in 54 days, exceeding scope and schedule.
• Won a 250k € ARR anchor customer and built a sustainable enterprise sales pipeline in the first quarter.
• Paid PoCs with Zalando (35k €) and tesa (26k €), validating product-market fit with Tier-1 enterprise customers.
• Initiated ISO-27001 and TISAX certification processes. Left when the venture entered its next organizational phase.

Migration from Exchange 2016 to Exchange 2019 and Exchange Online, as well as the introduction of a backup solution and an archiving solution. The goal was to securely modernize the email and archiving infrastructure in compliance with legal requirements and ensure high performance.

Responsibilities as IT PROJECT MANAGER: Overall project management and operational coordination / Ensuring compliance with budget and resource limits / Ensuring project objectives are met / Ensuring compliance with regulatory requirements and policies, including ISMS, ITIL, and data protection requirements / Preparing and presenting management reports for the project sponsor and steering committee / Coordinating cross-functional teams across Exchange, network, data protection, and IT security / Planning and carrying out the migration from Exchange 2016 to Exchange 2019 / Planning and carrying out the migration from Exchange 2019 to Exchange Online / Planning and introducing a backup solution for Exchange Online / Coordinating an EU-wide tender for an archiving solution, including market research with potential suppliers / Planning and introducing an archiving solution for Exchange Online / Coordinating and preparing the BAS notices required for the project / Coordinating and aligning with stakeholders (for example, business units, external service providers, and suppliers) to define requirements and deliver solutions

Technical environment: MS Exchange 2016, MS Exchange 2019, MS Exchange Online, MSOffice, MS Planner, MS Powerpoint, MS Project, MS Teams, CodeTwo, Hornet Security

Technologies: n8n, Notion, OpenAI API, Claude, MS AI Foundry, MS CoPilot Studio, MS CoPilot, LLM, Node.js, Vercel, LangGraph, PostgreSQL, pgEdge, pgvector, Docker, LangChain, Ollama, Open WebUI

• Continuous evaluation and prioritization of internal automation needs
• ~20 AI agents in active use: research, content pipelines, document processing
• 5 n8n workflows for automated data and process control
• Architecture built on the same principles as in customer projects: state management, event-driven orchestration, API integration
• Ongoing operation and further development

• work in the Developer-Experience team to improve developer experience and tooling for all teams of the RTL+ streaming platform
• development of reusable GitLab CI/CD components to standardize processes and automatically enforce code quality and security gates
• infrastructure automation with Pulumi
• operation and monitoring of GitLab Runners in AWS with Kubernetes
• integration and automation of Renovate in GitLab pipelines for continuous dependency updates
• extension of Backstage as the central developer platform to optimize internal workflows and self-service capabilities
• development of various tools and automations in TypeScript, Go, and Python

• Implementing cross-industry applications with LLMs
• Developing cloud infrastructure for clients
• Implemented end-to-end data pipeline to deploy models in real time
• Managed overall IT system administration and desktop support

Strategic technology leadership and architecture consulting.

• Fractional CTO & interim management for startups, scale-ups, and enterprises – technical strategy, team building, architecture oversight, and delivery.
• Architecture consulting on cloud-native, distributed, and event-driven systems: reviews, design partnerships, and ongoing advisory.
• Event-driven architecture training – a hands-on 2-day course for engineering teams
• Conference speaker on distributed systems