Principal Systems Engineer

ASSYSTEM; United Kingdom; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading-edge company in the UK’s nuclear industry seeks a Principal Systems Engineer to drive complex engineering solutions. The ideal candidate will demonstrate deep expertise in engineering disciplines, lead multi-disciplinary teams, and possess or be working towards Chartered Engineer status. This role offers autonomy and the opportunity to influence the future of engineering standards and practices within the sector.

Qualifications

• Experience delivering engineering solutions within regulated industries.
• Proven experience in managing complex engineering projects.
• Demonstrated expertise across major engineering disciplines.

Responsibilities

• Lead multi-disciplinary teams in delivering engineering projects.
• Define policies, methods, and toolsets for system architecture and analysis.
• Prepare and deliver technical presentations to stakeholders.

Skills

Technical Leadership

Multi-disciplinary Team Management

Innovative Problem Solving

Education

Chartered Engineer status or equivalent

INCOSE ESEP or equivalent

Job description

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Join a leading-edge team shaping the future of the UK’s nuclear industry. We're looking for a Principal Systems Engineer with the vision, experience, and technical leadership to deliver complex, safety-critical engineering solutions.

What You’ll Do:

Apply innovative techniques to develop high-quality, future-ready engineering solutions.

Demonstrate deep expertise across all major engineering disciplines.

Lead the development of processes and procedures that drive continuous improvement and operational efficiency.

Lead multi-disciplinary teams in delivering high-complexity engineering projects.

Bring proven experience delivering solutions to recognised standards, regulations, or bespoke customer specifications—preferably within highly regulated sectors.

Be on track to achieve Chartered Engineer (C.Eng.) status or hold it already. INCOSE ESEP (or equivalent) highly desirable.

Take technical ownership of systems engineering outputs across major projects.

️ Monitor and provide strategic advice on emerging health and safety concerns.

Contribute to the definition of technical goals across the business.

Interpret and evaluate evolving standards, regulations, and directives, embedding this knowledge into business practices.

️ Assess and introduce emerging software tools to enhance delivery and innovation.

Lead investigations into quality issues, implementing corrective actions to drive improvement.

Prepare and deliver technical presentations to clients, regulators, or external stakeholders.

Define policy, methods, and toolsets for:

Business, mission, and stakeholder needs

System requirements and architecture

System design definition and interfaces

System analysis and model-based analysis

Verification and validation of system designs

Provide strong technical leadership across multi-discipline teams.

Operate with full autonomy, requiring no formal technical supervision beyond peer review.

Lead technical estimating for medium- to high-complexity projects.

Manage interfaces with external project teams, ensuring alignment and quality across all stakeholders.

Present technical content at industry events or client briefings; support business development through relationship-building.

Contribute to the development and enhancement of the Integrated Management System (IMS).

Help define standards compliance guidelines across projects and teams.

Job Description

Principal Systems Engineer

Join a leading-edge team shaping the future of the UK’s nuclear industry. We're looking for a Principal Systems Engineer with the vision, experience, and technical leadership to deliver complex, safety-critical engineering solutions.

What You’ll Do:

Apply innovative techniques to develop high-quality, future-ready engineering solutions.

Demonstrate deep expertise across all major engineering disciplines.

Lead the development of processes and procedures that drive continuous improvement and operational efficiency.

Lead multi-disciplinary teams in delivering high-complexity engineering projects.

Bring proven experience delivering solutions to recognised standards, regulations, or bespoke customer specifications—preferably within highly regulated sectors.

Be on track to achieve Chartered Engineer (C.Eng.) status or hold it already. INCOSE ESEP (or equivalent) highly desirable.

Take technical ownership of systems engineering outputs across major projects.

️ Monitor and provide strategic advice on emerging health and safety concerns.

Contribute to the definition of technical goals across the business.

Interpret and evaluate evolving standards, regulations, and directives, embedding this knowledge into business practices.

️ Assess and introduce emerging software tools to enhance delivery and innovation.

Lead investigations into quality issues, implementing corrective actions to drive improvement.

Prepare and deliver technical presentations to clients, regulators, or external stakeholders.

Define policy, methods, and toolsets for:

• Business, mission, and stakeholder needs

• System requirements and architecture

• System design definition and interfaces

• System analysis and model-based analysis

• Verification and validation of system designs

Provide strong technical leadership across multi-discipline teams.

Operate with full autonomy, requiring no formal technical supervision beyond peer review.

Lead technical estimating for medium- to high-complexity projects.

Manage interfaces with external project teams, ensuring alignment and quality across all stakeholders.

Present technical content at industry events or client briefings; support business development through relationship-building.

Contribute to the development and enhancement of the Integrated Management System (IMS).

Help define standards compliance guidelines across projects and teams.

Qualifications

Demonstrates substantial experience in delivering engineering solutions in compliance with recognised industry standards, customer-specific codes, or legislative requirements. At least half of this experience should be within highly regulated industries or complex engineering projects.

Ideally holds, or is actively working toward, Chartered Engineer (C.Eng.) status or equivalent professional accreditation.
INCOSE ESEP (or equivalent systems engineering certification) is highly desirable.

Additional Information

Due to the nature of work to be undertaken applicants will be required to meet certain residency criteria in order to attain a minimum level of UK security clearance if not already security cleared to a minimum SC level.

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.