Principal Systems Engineer

Company: Sirius Analysis Ltd

Location: Portsmouth

Posted: April 23rd, 2026

Location: Portsmouth office with a hybrid working model

Hours: Full time

Salary: From £60,000, negotiable dependent on experience. The role comes with a competitive benefits package including pension (7% company contribution), additional holiday purchase options and life assurance.

Sirius Analysis, we are a rapidly growing consultancy firm, renowned for our reputation and our keen ability to understand and meet customer requirements effectively. Our team is dedicated to delivering high-quality, end-to-end consultancy services, ranging from requirements management and modelling and simulation through to P3M. We operate across multiple sectors, including defence, energy, and health. We are looking for Principal Consultant to join our Systems Engineering team as we go through our next phase of growth.

Our Systems Engineering function is responsible for understanding clients challenges and finding solutions to their problems. Our capabilities cover the full lifecycle from Requirements Engineering; Architecture Development; Systems Analysis, Analysis of Alternatives; Integration Verification Validation and Testing; through to Sustainment; Disposal and Replacement. With staff that are active members of INCOSE, we can provide you with technical leaders and a trusted service that is based on best practice and places systems thinking and systems approaches at the heart of any project.

The role

As a principal consultant, you’ll be expected to be involved with both delivering high-value solutions and contributing to business growth through client engagement, technical leadership, and mentoring.

You will be expected to lead on Major consulting projects ensuring technical excellence is delivered and the client’s expectations are met. Your role will involve elements of team leadership, client delivery, providing technical expertise, and business development contributing to the identification of opportunities and providing input to bids.

Responsibilities will include:

About you

You will have an extensive experience of systems engineering in a consulting setting demonstrating capability analysis techniques, and the proven ability to develop technical solutions to business problems. Candidates will require expertise in some or all of the following areas:

Other Requirements

What we offer

We offer a combination of mentoring and internal and external training opportunities, with specialist sector organisations and inhouse courses. You will have exposure to subject matter experts and additional online learning packages.

The role comes with a competitive benefits package including pension (7% company contribution), additional holiday purchase options, private health care, life assurance and electric vehicle scheme.

To Apply

To apply please send a covering email and CV to resourcing@sirius-analysis.co.uk.

CVs are reviewed upon submission and initial phone for face-to-face interviews are likely to begin within two weeks dependent on availability. Feedback will be given on all interview candidates regardless of success.

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