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Leonardo

Principal Software Engineer

Basildon
Posted about 18 hours ago
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Job Description

The Opportunity

Are you a Software Engineer with C++ experience looking for your next challenge?

Here at Leonardo, we are seeking an experienced Principal Software Engineer to take on pivotal technical work within our Integrated Sensors & Protection line of business, working on a range of defence projects.

Direct industry experience is not required; we are happy to explore all backgrounds and help develop all our software engineers.

What you will do

We want to develop a new generation of features and capabilities using innovative software solutions and we need you to create them. You will be a key part in a community of world-class software engineers who will continuously improve, collaborate and innovate with other engineers to create market-leading products within the defence industry.

What we are looking for

  • Several years of C/C++ software engineering experience in aerospace, defence, or other mission/safety-critical domains.
  • Networking fundamentals, including TCP/IP, UDP, and socket programming
  • RTOS concepts, such as multi-threading and inter-process communication (IPC)
  • DDS Middleware
  • Experience with development tools including:
    • Microsoft Visual Studio
    • CMake
    • Git
    • Ubuntu Linux
  • Experience with embedded SoC platforms, such as Xilinx, Texas Instruments, or similar processors
  • Strong debugging and troubleshooting skills on embedded platforms
  • Embedded Linux custom target hardware development and debugging experience
  • Experience of using Iterative development lifecycles (for example tailored Agile.)
  • Experience using tools associated with Iterative development lifecycles (Jira / DevOps.)
  • Familiarity with development to design and coding standards.

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.

Start with a chat, not a search bar

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.

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Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

Why you're a good match

Strong

Your 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.

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It 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.

See breakdown
Strong

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.

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Strong

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.

Nice-to-have skills

  • Python scripting for development support
  • Experience with Unit Test Frameworks
  • Skills in technical risk identification and mitigation across software components.
  • Hands-on delivery with lifecycle experience from requirements through to certification.
  • Demonstrated ability to mentor and coach engineers, uplifting capability and promoting software engineering excellence.
  • Ability to collaborate across disciplines, working closely with systems, hardware, and firmware teams to ensure coherent integration.

This is not an exhaustive list, we are keen to hear from you even if you might not have experience in all the above. The most important skill is a good attitude and willingness to learn.

What you will get

  • Flexible working: We offer our employees the time and flexibility they need to enjoy a balanced life through flexible hours and part time options
  • Flexible benefits: Our company-funded approach to flexible benefits allows employees to make choices appropriate for them. Each employee has access to a wide choice of lifestyle, health and wellbeing options best suited to their individual lifestyle goals.
  • Above average employer pension contributions
  • Annual bonus
  • Annual leave: We offer 25 days holiday, plus bank holidays and 12 flexi days
  • Network groups: To demonstrate our ongoing commitment to diversity & inclusion we have network groups for
    • Carers (employees who care for someone who is either older, disabled or seriously ill)
    • Enable (supporting people with disabilities)
    • Equalise (development of a gender balanced workforce)
    • Pride (promoting equality for all LGBTQ+ individuals)
  • We also work in partnership with AFBE (Association for Black and Minority Ethnic Engineers).

Get help with your application

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Get help applying for this job

To find out about all of our Company benefits please visit: https://uk.leonardocompany.com/en/people-careers/life-at-leonardo/company-benefits

Security Clearance

You must be eligible for full security clearance. For more information and guidance, please visit - https://www.gov.uk/government/publications/united-kingdom-security-vetting-clearance-levels

Leonardo is a global leader in Aerospace, Defence, and Security. Headquartered in Italy, we employ over 53,000 people worldwide including 8,500 across 9 sites in the UK. Our employees are not just part of a team—they are key contributors to shaping innovation, advancing technology, and enhancing global safety.

At Leonardo we are committed to building an inclusive, accessible, and welcoming workplace. We believe that a diverse workforce sparks creativity, drives innovation, and leads to better outcomes for our people and our customers. If you have any accessibility requirements to support you during the recruitment process, just let us know.

Be part of something bigger - apply now!

#LI-JP1

Primary Location

GB - Basildon

Contract Type

Permanent

Hybrid Working

Hybrid

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Skills

C++
C
TCP/IP
UDP
Socket programming
RTOS
Multi-threading
IPC
DDS Middleware
Microsoft Visual Studio
CMake
Git
Ubuntu Linux
Embedded SoC
Debugging
Agile

Location

Basildon, England, United Kingdom

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