Maintenance Management Experts in Dortmund

As Managing Director of Ullertec GmbH, my focus is on advising and supporting companies in the areas of occupational health and safety, workplace safety, and operational safety organization.

As a specialist for occupational safety, I support companies with safety-related services in accordance with DGUV Regulation 2, the creation and further development of risk assessments, operating instructions, and occupational safety organizations, as well as with site inspections, safety committee meetings, and the implementation of legal requirements.

Ullertec GmbH, based in Bochum, has established itself as a specialized service provider for occupational health and safety in the Ruhr area and in North Rhine-Westphalia. Our customers include companies and organizations from industry, production, logistics, skilled trades, services, and public or municipal sectors.

In addition to working as an external specialist for occupational safety, our services also include fire protection, safety and health coordination (SiGeKo), expert noise measurements, inspections of work equipment, and practical training and instruction.

A key success is the continuous building of long-term safety-related support relationships and a growing customer base. In doing so, we combine many years of industry experience with modern, structured health and safety consulting.

Our goal is not to represent health and safety only on paper. We analyze workplaces, machines, and operational processes directly on site and develop clear measures that can be implemented economically.

Ullertec stands for practical, structured, and reliable health and safety from Bochum - across the Ruhr area, in North Rhine-Westphalia, and for selected services nationwide.

• Technical site management
• Planning & documentation
• Billing
• Professional & disciplinary management of employees
• Process management
• Cost calculation & preparation of specifications
• Strategic sales

• Conduct structured evaluation of LLM outputs using Content Review Standards (CRS) and AI safety frameworks.
• Assess responses across high-risk domains including violence and criminal facilitation.
• Assess responses across high-risk domains including hate speech and harassment.
• Assess responses across high-risk domains including suicide and self-harm.
• Assess responses across high-risk domains including regulated advice (medical, legal, financial).
• Assess responses across high-risk domains including misinformation and fabricated claims.
• Assess responses across high-risk domains including defamation and intellectual property.
• Assess responses across high-risk domains including child safety and sexual exploitation.
• Assess responses across high-risk domains including political and sensitive content.
• Apply youth-protection and age-appropriateness guidelines to prevent unsafe facilitation or restricted substance guidance.
• Classify prompts as adversarial, borderline, or benign based on contextual intent and risk analysis.
• Evaluate model behavior types including correct refusal, partial refusal, over-refusal, under-refusal, improper compliance, and ignorance-based outputs.
• Identify policy misapplications and user-intent misinterpretation patterns.
• Designed structured adversarial and borderline multi-turn conversation flows to stress-test AI boundary enforcement and reasoning stability.
• Identified failure modes including hallucination, unsafe compliance, excessive refusal, contextual drift, and inconsistent safety logic.
• Applied a structured four-dimension evaluation rubric covering accuracy & safety, relevance & completeness, clarity & structure, and tone & appropriateness.
• Provided structured feedback supporting supervised fine-tuning and reinforcement learning from human feedback processes.
• Rewrote unsafe or misaligned outputs into compliant, accurate, and helpful responses.
• Performed Persian ↔ English translation and translation validation of AI-generated content.
• Assessed semantic accuracy, contextual consistency, and safety alignment across languages.
• Identified mistranslations, cultural nuance issues, and cross-lingual policy inconsistencies.
• Recognized with the Above & Beyond Award – Q3 2025 for exceeding quality standards and embracing innovation.

• Subsidiary of the EPH Group, €250 million in revenue, 20 companies, 200 employees
• Responsibility for controlling, finance, IT, HR, procurement, project management/M&A, legal/compliance, accounting, and taxes
• Corporate management and transformation
• Preparation and support of the company sale (STEAG → EPH)
• Establishment of a new headquarters (finance, IT, legal, HR, etc.)
• Strategic and operational controlling
• Post-merger integration of foreign companies (BE, NL, FI, FR)
• Execution of M&A processes (buy & sell side)
• Company-wide process analysis and preparation for SAP S/4HANA
• Carve-out and post-merger integration
• Consistent implementation of digitization and efficiency measures
• Finance and accounting

• Conducting research on HVAC fault detection and diagnosis using Diagnostic Bayesian Networks.
• Developing diagnostic frameworks that combine expert knowledge with data analytics to improve system reliability.
• Integrating occupant feedback as a symptom input for enhanced fault diagnosis.
• Collaborating with industrial partners on real-world system validation.
• Publishing research in peer-reviewed journals (e.g., Energy and Buildings) and presenting at international conferences.

• Plan and design complex production systems as part of a team
• Develop and modify electrical circuit diagrams
• Design electrical machine controls and drive technology
• Troubleshoot electronic assemblies
• Develop PLC and visualization software as well as process control software
• Identify and implement optimization measures
• Create operating instructions
• Ensure IT security of all operational technology
• Support building services
• Technologies: Eplan P8, PCS7, ProLeiT, PlantiT, TIA, S7