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
United Kingdom
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.
About
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.
- 01Structure complexity
- 02Preserve traceability
- 03Improve decisions
Expertise
Depth where it matters.
Traceability, made tangible.
A generic illustration of requirement traceability: hover any node to light its path from stakeholder need to verification. No project data.
·
Hover a requirement node
Illustrative model · no project data
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
800+
requirements managed
100+
colleagues trained
2
regulated sectors
Work
Work.
A focused view of my work across requirements, MBSE and regulated engineering environments.
Approach
Structure, traceability and systems thinking: for clearer, safer, more auditable decisions.Experience
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. 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
Education
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
Contact
Let's talk.
For professional conversations around systems engineering, requirements, MBSE, regulated environments or AI-assisted engineering workflows, feel free to get in touch.
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United Kingdom