Requirements Engineering
ISO/IEC/IEEE 15288-aligned requirements practice: quality, clarity, hierarchy, rationale and end-to-end traceability across the system lifecycle.
- ISO/IEC/IEEE 15288
- Hierarchy
- Rationale
feridunoncel.com
Feridun Oncel
Systems Engineer | Requirements, MBSE & AI-Assisted Engineering
I bring structure, traceability and systems thinking to complex engineering environments, combining requirements engineering, MBSE and AI-assisted workflows to support clearer, safer and more auditable decisions.
01About
I make complex systems legible.
I'm a Systems Engineer working in the UK nuclear sector, focused on requirements engineering, traceability and model-based systems engineering across large, regulated programmes. My work centres on making complex systems legible: well-structured requirements, clear hierarchy and rationale, and engineering decisions that can stand up to scrutiny.
Before nuclear, I worked in aerospace at Rolls-Royce on civil engine control systems, covering model-based engineering, requirements, and verification and validation in safety-critical software and systems contexts. That environment shaped how I work: disciplined change control, evidence-driven verification, and respect for the lifecycle.
I also work on the careful, structured adoption of AI in systems engineering, using LLM-based support for gathering, reviewing and linking requirements to improve consistency, traceability and decision support. The aim is never to replace engineering judgement, but to give it better instruments.
02Expertise
Depth where it matters.
IBM DOORS & Traceability
Structuring, linking and baselining requirements for audit-ready programmes, including leading internal IBM DOORS training for 100+ colleagues.
- Baselines
- Audit readiness
- Training
MBSE & Systems Architecture
SysML modelling in Sparx Enterprise Architect with model-to-requirement traceability, supporting cross-discipline coherence of the system definition.
- SysML
- Sparx EA
- Traceability
Safety-Critical & Regulated Systems
Engineering in nuclear and aerospace contexts: V-model delivery, verification and validation, and the rigour regulated environments demand.
- Nuclear
- Aerospace
- V-Model
AI-Assisted Systems Engineering
LLM-supported requirements gathering, review and linking through structured systems-engineer personas, supporting deliberate and responsible adoption of AI in engineering workflows.
- LLM workflows
- SE personas
- Responsible adoption
Verification, Validation & Lifecycle
V&V planning and lifecycle thinking from system definition through integration, building the evidence base alongside the system itself.
- V&V planning
- Integration
- Evidence
03Work
Work.
High-level, role-level summaries. No internal or sensitive detail.
Requirements Management in Safety-Critical Programmes
Structured requirements, hierarchy and traceability on major UK nuclear programmes, including the Geological Disposal Facility (GDF) and the Low Level Waste Repository (LLWR) at a public, programme level. Aligned with governance and regulatory expectations.
- GDF
- LLWR
- Governance
IBM DOORS Enablement
Managing and structuring 800+ requirements in IBM DOORS and leading internal training for 100+ colleagues, raising consistency, traceability and confidence in requirements management.
- IBM DOORS
- 800+ requirements
- 100+ trained
MBSE & Architecture Support
Supporting system architecture work in Sparx Enterprise Architect with SysML, maintaining requirements-to-model traceability and a coherent system definition across disciplines.
- Sparx EA
- SysML
AI-Assisted Engineering Workflows
Designing LLM-supported systems-engineering personas for requirements gathering, review and linking, making AI adoption in engineering structured, safer and more consistent.
- LLM
- Requirements review
Aerospace Control Systems Background
Model-based design for Rolls-Royce civil engine programmes including Trent 700, Trent 900, Trent 1000, Pearl10X and UltraFan. Delivered with MATLAB/Simulink, PTC Integrity and SysML through the V-model in a DO-178C context.
- Rolls-Royce
- MATLAB/Simulink
- DO-178C
04Experience
Where I've practised it.
-
Systems Engineer
Nuclear Waste Services
Requirements engineering and MBSE in the UK nuclear sector, supporting the Geological Disposal Facility (GDF) and LLWR programmes at a public, programme level. Working to ISO/IEC/IEEE 15288:2023 within NWS governance and UK regulatory expectations, using IBM DOORS, Sparx EA and AI-assisted systems engineering, with V-model delivery, traceability and audit readiness throughout.
- ISO/IEC/IEEE 15288:2023
- IBM DOORS
- Sparx EA
- AI-assisted SE
- V-Model
-
Model Based Software Design Engineer
Rolls-Royce
Control system and software integration on Trent 700, Trent 900 and Trent 1000, working across CSS and SRS levels with PTC Integrity and MATLAB/Simulink in a DO-178C context, maintaining requirements-to-test traceability through the V-cycle.
- Trent 700 / 900 / 1000
- PTC Integrity
- DO-178C
- MATLAB/Simulink
-
Model Based Systems Engineer
Rolls-Royce
System modelling for Pearl10X and UltraFan in SysML and MATLAB/Simulink, building system models, tracking requirements coverage and model-to-test verification traceability, with configuration and change tracking in Azure DevOps.
- Pearl10X
- UltraFan
- SysML
- Azure DevOps
05Education
Foundations.
MSc Engineering Business Management
University of Exeter
Distinction
DissertationNew Product Development Challenges for SMEs in the HVAC Sector in Turkey
BEng Mechanical Engineering
Dokuz Eylul University
2:1
DissertationDevelopment of a Manufactured Magnetic Fluid Manipulator
MIET · IET Member
INCOSE Member
INCOSE Working Groups
06Contact
Let's talk.
For professional conversations around systems engineering, requirements, MBSE, regulated environments or AI-assisted engineering workflows, feel free to get in touch.
United Kingdom