Requirements Engineering: Specifications, Interfaces and Testable Requirements
Unclear requirements are one of the most common causes of project delays and rework. I create structured business specifications, interface documentation, and testable requirements-so development, testing, and compliance work from a shared foundation. In agile settings, I also support product ownership (PSPO I/II) by translating requirements into a consistent, usable backlog.
When to Engage
- Requirements are unclear, contradictory, or not formulated in testable terms
- Interfaces between systems or organizational units are not specified
- Regulatory and risk-management requirements need to be translated into actionable specifications
- Business specifications are missing, outdated, or no longer traceable
Deliverables
Working Approach & Quality Assurance
Structured Elicitation: Requirements are systematically gathered-from interviews, workshops, document analysis, and system reviews.
Review Process: Every specification goes through a defined review cycle with business, development, and, where applicable, compliance.
Traceability: Every requirement is traceable-from the business requirement through design to the test case and sign-off.
Regulatory & Audit Alignment
Requirements engineering in regulated environments demands particular traceability. I ensure that:
- Regulatory requirements are clearly identified and traceable
- Business specifications meet internal quality and compliance standards
- Testability and acceptance criteria are documented in audit-ready format
Project contexts are anonymized. Roles and results are truthful; details available under NDA.
Project Example (Anonymized)
Business Specification and Interface Routing in Regulated Banking Context
Regulated Financial Services - Banking, Payments & Insurance System Environment
Challenge: Missing specification for a routing concept in a complex core system context. Multiple interfaces without documented dependencies.
Role: Senior Business Analyst for business specification and interface documentation
Results:
- Comprehensive business specification for interface routing created and signed off
- Interface dependencies documented and aligned with business units
- Testable requirements provided as foundation for implementation and QA
Note: The project examples presented are drawn from previous roles in consulting and financial services. All contexts have been anonymized; roles and outcomes are described accurately.
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Last updated: February 2026