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Systems Performance Engineer (Simulation & Modelling)

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Systems Performance Engineer (Simulation & Modelling)
Location: Hertfordshire
Salary: Up to £52,500 + Excellent Benefits
Working Pattern: On-site Position
Security Requirements: UK Nationals Only
The Opportunity
An exciting opportunity has arisen for a Systems Performance Engineer to join a multidisciplinary engineering team working on the development of advanced defence technologies.
This role focuses on assessing and predicting system performance through mathematical modelling, simulation and technical analysis. You'll play a key role in helping engineering teams understand how design decisions influence overall system behaviour and performance throughout the product lifecycle.
Working alongside specialists across aerodynamics, propulsion, guidance, navigation, control, sensors and systems engineering, you'll contribute to the development of highly complex products operating across air, land and maritime environments.
Key Responsibilities
- Conduct technical studies to assess overall system performance.
- Develop and analyse mathematical models of complex engineering systems.
- Evaluate the impact of design changes on system behaviour and performance.
- Support requirements development, verification and certification activities.
- Perform simulation and modelling studies to assess performance against key indicators.
- Analyse and interpret large datasets generated through modelling activities.
- Work closely with subject matter experts across multiple engineering disciplines.
- Produce technical reports and present findings to both technical and non-technical stakeholders.
- Contribute to product verification, validation and ongoing capability development activities.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
See breakdownIt searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Skills & Experience Required
We're interested in speaking with candidates who can demonstrate experience in several of the following areas:
- Mathematical modelling of dynamic systems.
- Performance analysis and system behaviour assessment.
- Running and analysing complex simulations.
- Systems engineering activities.
- Strong analytical and problem-solving capabilities.
- Producing clear and concise technical documentation.
- Presenting technical information to a range of audiences.
- Working within multidisciplinary engineering environments.
Technical Knowledge
Experience in one or more of the following areas would be highly beneficial:
- Flight Dynamics
- Aerodynamics
- Propulsion Systems
- Guidance, Navigation & Control (GNC)
- Control Systems
- Missile or Weapon Systems
- Performance Modelling
- Simulation & Modelling
- Verification & Validation
- Systems Architecture
- Dynamic System Analysis
Software & Tools
Candidates should have experience with:
- MATLAB
- Simulink
- Mathematical Modelling Environments
- Data Analysis Tools
Experience with other simulation, modelling or systems engineering toolsets would also be advantageous.


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What's On Offer
- Salary up to £52,500
- Annual bonus opportunity
- Generous pension contribution
- Additional leave entitlement
- Overtime opportunities
- Career development within highly advanced engineering programmes
- Exposure to complex modelling, simulation and performance analysis challenges
- Opportunity to work alongside leading specialists across multiple engineering disciplines
If you're passionate about simulation, modelling, systems performance and solving complex engineering problems, we'd love to hear from you.
Modis International Ltd acts as an employment agency for permanent recruitment and an employment business for the supply of temporary workers in the UK. Modis Europe Ltd provide a variety of international solutions that connect clients to the best talent in the world. For all positions based in Switzerland, Modis Europe Ltd works with its licensed Swiss partner Accurity GmbH to ensure that candidate applications are handled in accordance with Swiss law.
Both Modis International Ltd and Modis Europe Ltd are Equal Opportunities Employers.
By applying for this role your details will be submitted to Modis International Ltd and/ or Modis Europe Ltd. Our Candidate Privacy Information Statement which explains how we will use your information is available on the Modis website.
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