Systems Engineer

Leidos; Farnborough; On-site; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Contributory Pension Scheme

Private Medical Insurance

33 days Annual Leave

Flexible benefits

Flexible working scheme

Job summary

Leidos in the United Kingdom seeks Systems Engineers to support UK programmes in 2026. You will work with customers and suppliers to execute systems engineering activities across the full lifecycle, focusing on MBSE.

Responsibilities include refining requirements, allocating them to components, modelling with MBSE and TOGAF, and delivering design artefacts and compliance reports. Security clearances (BPSS/SC) or DV may be required, with flexible working options.

Qualifications

• Experience in MBSE and model-based system development.
• Ability to derive and allocate requirements to components.
• Proven track record on mission-critical systems integration programmes.
• Strong customer-facing communication with diverse stakeholders.

Responsibilities

• Refine system and sub-system requirements with stakeholders and acceptance criteria.
• Allocate requirements to lower-level components and perform derivation analysis.
• Model functional and non-functional requirements using MBSE.
• Create system designs and behaviours within architectural views.
• Manage compliance assessments across system levels.
• Produce detailed artefacts: designs, ICDs/APIs, and reports.
• Prepare for milestone technical reviews and deliverables.
• Manage the technical backlog and release content.

Skills

MBSE

SysML

TOGAF

Cameo

Requirements analysis

Stakeholder mgmt

Cloud design

Tools

NoMagic Cameo

Job description

We Need You...

We are looking for Systems Engineers to support our growth in UK programmes throughout 2026. Candidates should have a full understanding of systems engineering principles and prior experience on a major programme accepting and integrating deliveries from suppliers.

The Role:

In this role you will be responsible for working with customers and suppliers to execute systems engineering activities across the full lifecycle, focusing on Model Based Systems Engineering (MBSE).

Key Responsibilities

• Work with operational stakeholders, technology suppliers and architects to refine system and sub‑system requirements and acceptance criteria.
• Allocate requirements to lower‑level components, conduct technical derivation analysis as needed.
• Model functional and non‑functional requirements and scenarios using MBSE and architectural framework approaches.
• Model operational, business and system designs and behaviours within architectural views.
• Manage compliance assessments at system and lower levels.
• Maintain the high‑level design and oversee development of lower‑level designs.
• Produce detailed engineering artefacts such as high‑ and low‑level designs, interface control documents (ICDs) / application programming interfaces (APIs), and compliance reports.
• Prepare for and deliver milestone technical reviews and the associated work‑product deliverables.
• Manage the technical backlog and content of associated releases.

Required Skills

• Strong experience with systems modelling tools (e.g., NoMagic Cameo), architectural frameworks (e.g., TOGAF), and languages (e.g., SysML).
• Strong knowledge of requirements and user scenario development in both text‑based and model‑based approaches.
• Success in working within mission‑critical systems integration programmes.
• Ability to work with a number of stakeholders and suppliers across organisational boundaries.
• Experience developing system behavioural diagrams, modelling interfaces, and developing models to encapsulate functional and non‑functional requirements and designs.
• Demonstrable successes within the systems engineering environment.
• Excellent customer‑facing skills, including the ability to ingest large volumes of requirements and understand customer needs.
• Understanding of designing and delivering systems in a public cloud environment.

Clearance Requirements

• Clearance to start BPSS.
• Clearance for Role SC.
• Must be willing to undergo SC or DV clearance as required.

What we do for you:

• Contributory Pension Scheme.
• Private Medical Insurance.
• 33 days Annual Leave, including public and privileged holidays.
• Access to flexible benefits such as life assurance, health schemes, gym memberships, annual buy‑and‑sell holidays, and cycle‑to‑work scheme.
• Flexible working scheme.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.