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Systems Architect & MBSE Specialist

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UK-based | Contract & Consultancy
Defence • Aerospace • Space • Safety-Critical Systems

Professional Summary

Senior systems architect and MBSE specialist with over a decade of experience delivering complex, high-assurance systems across defence, aerospace, space, and naval domains.

Extensive background in system and enterprise architecture, MBSE framework design, architecture governance, and technical design authority roles. Proven ability to operate in regulated and safety-critical environments, translating policy, standards, and stakeholder intent into coherent, auditable architectures.

Experienced in designing not only architectures, but the methods, modelling frameworks, and toolchain extensions that enable effective delivery at scale.

Core Capabilities

  • System & Enterprise Architecture (System-of-Systems)

  • Model-Based Systems Engineering (MBSE)

  • Architecture Governance & Assurance

  • Technical Design Authority (TDA)

  • MBSE Framework & Method Design

  • SysML, NAFv4, UAF, ArchiMate

  • Stakeholder Engagement & Concern Analysis

  • Toolchain Extension & Automation (MDG for Sparx EA / DSL for Cameo)

  • Safety-Critical & Regulated Environments

EXPERIENCE

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Enterprise System Architect – MBSE Architecture & Design (Contract)

Quest Global​

  • Developed enterprise-level MBSE frameworks and modelling methodologies aligned to ISO/IEC 15288.

  • Designed and implemented Domain-Specific Language (DSL) extensions for Cameo/MagicDraw to extend SysML capability.

  • Defined best practice architecture and modelling guidance adopted across multiple programmes.

  • Engaged stakeholders to capture concerns and ensure architectures addressed operational and technical priorities.

Systems Architect – System Architecture & Design (Contract)

Kellogg Brown & Root (KBR)

  • Delivered system architecture for a wide-area network tactical communication system.

  • Designed and documented architectures using NAFv4, ArchiMate, and SysML.

  • Developed bespoke MDG extensions for Sparx Enterprise Architect to support programme-specific needs.

  • Influenced architectural best practice and governance across delivery teams.

Solution Architect – System Architecture & Design (Contract)

Roke Manor Research

  • Provided architectural oversight and technical assurance for MOD Le TacCIS.

  • Acted as Technical Design Authority supporting integration partner delivery.

  • Produced high-level and logical architectures aligned to MOD policy and governance.

  • Engaged MOD stakeholders, suppliers, and integration partners to resolve architectural issues.

Senior Systems Engineer / Architect (Contract)

General Dynamics UK

  • Led architectural modelling for the MORPHEUS EvO open architecture programme.

  • Produced system and software architecture views, interworking policies, and technical roadmaps.

  • Supported CI/CD-based architectural delivery and governance.

  • Liaised directly with MOD BATCIS stakeholders and subcontractors.

Senior Systems Simulation Engineer – Systems Architecture (Contract)

Elbit Systems

  • Delivered high-level system architecture and modelling for a large naval training system within a regulated defence environment.

  • Designed and documented architectural artefacts using recognised frameworks (NAFv4 / UAF), supporting programme governance and assurance.

  • Applied MBSE techniques to improve architectural traceability, consistency, and stakeholder communication.

  • Supported project planning and governance by contributing to management plans and technical reviews.

  • Engaged with engineering teams and stakeholders to ensure architectural alignment with programme requirements.

Control Systems Verification Engineer – Closed-Loop Modelling (Contract)

SABCA

  • Developed high-fidelity closed-loop control simulations for thrust vector actuation systems supporting the Ariane 6 launch vehicle.

  • Performed fault injection and dynamic analysis to support safety analysis, failure modes assessment, and engineering decision-making.

  • Analysed simulation outputs and produced structured technical evidence for engineering reviews and assurance activities.

  • Supported safety-critical design assurance where physical testing was impractical or high risk.

  • Presented findings to multidisciplinary engineering and assurance stakeholders to inform risk mitigation.

Principal Avionics Systems Engineer – Functional Architecture

MBDA

  • Developed functional system architectures for complex aerospace and defence programmes, ensuring alignment with customer, regulatory, and internal requirements.

  • Defined verification and validation strategies to support system assurance in safety-critical environments.

  • Applied MBSE techniques using SysML and UML to improve architectural clarity, traceability, and stakeholder understanding.

  • Influenced and promoted best practice in systems architecture and development across multidisciplinary engineering teams.

  • Supported design reviews and assurance activities by providing clear architectural rationale and evidence.

Aerospace & Safety-Critical Systems Engineering

GE Aviation

  • Delivered systems engineering, architecture, and verification for civil and military avionics programmes within highly regulated, safety-critical environments.

  • Developed system and functional architectures aligned to ARP4754 and DO-178 objectives, supporting certification and assurance activities.

  • Led formal methods and model-based tooling initiatives to improve requirements quality, traceability, and verification rigour, directly supporting certification programmes.

  • Authored system, interface, and interoperability specifications, and produced verification evidence for audits and regulatory review.

  • Supported customer and certification authority engagement by presenting clear, defensible technical evidence during design reviews and audits.

STANDARDS & FRAMEWORKS

  • ISO/IEC 15288 – Systems Lifecycle Processes

  • ISO/IEC/IEEE 42010 & 42020 – Architecture Description & Governance

  • MOD Architectural Frameworks – NAFv4, UAF

  • SysML, UML, ArchiMate

  • Safety-critical aerospace standards (DO-178, ARP4754)

TOOLS & TECHNOLOGIES

  • Cameo / MagicDraw

  • Sparx Enterprise Architect

  • IBM DOORS / DOORS NG

  • Rhapsody, PTC Integrity Modeller

  • JIRA, Confluence, Teamcenter, SharePoint

  • Git, GitLab, Jenkins, CI/CD Toolchains

© 2026 JG Systems Consulting Ltd.

Independent Systems Architecture & MBSE Consultancy

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