Principal Systems Engineer

Principal Systems Engineer (Mechanical/Electrical/Process Systems)

• Location: Hybrid - Derby Office attendance 2/3 days per week
• Contract Duration: 12 months
• Rate: £65 Per Hour Inside IR35

Are you a Systems Engineer with experience in mechanical, electrical, and process systems in highly regulated industries such as nuclear, aerospace, or defence? We are looking for a Principal Systems Engineer to join a dynamic contract team delivering defence and decommissioning projects.
You will work in a fast-paced, technically challenging environment, bridging complex systems, leading interface management, and delivering robust, compliant solutions.

Key Responsibilities

• Produce, manage, and verify system requirement specifications.
• Lead interface management across mechanical, electrical, and process systems.
• Define system architecture and perform functional and interface modelling.
• Work closely with multi-disciplinary teams to ensure system designs meet operational and regulatory requirements.
• Maintain and operate requirements management software (DOORS preferred).
• Apply Model-Based Systems Engineering (MBSE) tools such as Capella (desirable).

Essential Qualifications & Experience

• Degree in Engineering or STEM subject (or equivalent demonstrable experience).
• Experience in highly regulated industries - nuclear, aerospace, or defence.
• Strong foundation in mechanical or electrical engineering.
• Experience with systems thinking and systems engineering processes.
• Competence in producing technical documentation, managing system interfaces, and supporting design decisions.

Desirable Skills

• Prior exposure to the nuclear sector.
• Systems Engineering qualifications/training.
• Practitioner experience with Rationale DOORS.
• Familiarity with MBSE and INCOSE/BS standards.
• Experience transitioning from core engineering into systems engineering roles.

Please note that this role will require UK Security Clearance.

Apply Now:
Call Chloe on (phone number removed) or email (url removed) to take the next step in your career.