Senior Embedded C++ Engineer

ALTEN UK; Greater London; Hybrid; GBP 80,000 - 110,000; Full time

Benefits offered by this job

Private Medical Insurance

Cycle & Tech Scheme

Employee assistance programme

Life insurance & Pension Scheme

Social atmosphere & team events

Flexible working

Job summary

ALTEN UK is seeking a Senior Embedded C++ Engineer to contribute to mission‑critical software for regulated defence environments in London. The role demands deep embedded C++ expertise, real‑time determinism, and strong documentation practices.

You will work within a process‑heavy, high assurance program, collaborating across systems, electronics, and test teams. The successful candidate will have 8+ years of experience, be eligible for UK SC clearance, and operate in a hybrid on‑site/remote

Qualifications

• Bachelor’s or Master’s degree in Software Engineering, Computer Science, or related discipline; military background with hands-on experience acceptable.
• Eligible to hold UK SC security clearance.
• Strong embedded C++ experience (C++11/14/17 or later) in defence or regulated environments.
• Understanding of real-time constraints, determinism, and safety requirements.
• Experience with verification, validation, and requirements traceability.
• Familiarity with development lifecycle tooling and configuration management.

Responsibilities

• Design, develop, and maintain embedded C++ software for real‑time, mission‑critical systems.
• Work in safety‑regulated environments following high-integrity software practices.
• Develop low‑level components and system interfaces and integrate with hardware.
• Support unit, integration, and system tests to ensure deterministic behavior.
• Collaborate with systems, electronics, and test engineers to deliver robust software.
• Produce clear, traceable technical documentation for regulated environments.

Skills

embedded C++

real-time constraints

verification & traceability

development lifecycle tooling

debugging & problem solving

Education

Bachelor’s or Master’s in Software Eng/CS

military technical background

UK SC clearance eligibility

Tools

Git

Jenkins/CI tools

Configuration management

Job description

Senior Embedded C++ Engineer Overview

• Company Name: ALTEN UK
• Job Role: Senior Embedded C++ Engineer
• Qualifications: Not specified
• Category: I
• Job Type: Full Time
• Location: London, England, United Kingdom (Hybrid)

Requirements

Qualifications

Required Skills

• Strong experience with embedded C++ (C++11/14/17 or later)
• Proven background delivering software in defence, safety?critical, or regulated environments
• Solid understanding of real?time software constraints and deterministic behaviour
• Experience contributing to verification, validation, and requirements traceability activities
• Familiarity with configuration management and development lifecycle tooling
• Strong debugging and problem?solving ability within complex systems

Soft Skills & Collaboration

• Clear and confident communicator across multi?disciplinary teams
• Detail?oriented, quality?driven mindset
• Strong ownership of technical delivery and accountability
• Comfortable operating in process?heavy, high?assurance programmes

Required Qualifications

• Bachelor’s or Master’s degree in Software Engineering, Computer Science, or related discipline,or a relevant technical military background with equivalent hands?on experience.
• Candidates must be eligible to hold UK SC security clearance.

Desirable Skills

• Exposure to safety?critical standards such as DO?178 or equivalent
• Experience with Ada within high?integrity or regulated systems
• Knowledge of MISRA C/C++ or secure coding practices
• Familiarity with automated testing, static analysis, or CI/CD pipelines

The role

Company Description

ALTEN is a global engineering and technology consultancy operating across over 35 countries worldwide. We partner with industry leaders across sectors including Aeronautics, Aerospace, Defence, Naval, Automotive, Energy, Rail, IT and many more to deliver innovative engineering solutions that drive technological advancement & support sustainable transformation.

Our teams of passionate and agile engineers work on cutting-edge projects that shape the future of technology and sustainability. At ALTEN, we empower talented engineers to innovate, solve complex challenges, and deliver impactful solutions that build tomorrow’s world-today.

Join us and start building tomorrow’s world today!

Job Description

Join our team as a Senior Embedded Software Engineer and contribute to the development of mission?critical embedded software used within defence and other highly regulated engineering environments. You will work on complex real?time systems where software robustness, determinism, and safety assurance are essential.

This role offers the opportunity to apply deep embedded C++ expertise in high?integrity programmes, supporting the delivery of reliable software solutions within demanding, process?driven environments.

Location: London
On-site: 4 days per week
Seniority: Senior (8+ years’ experience)
Clearance: Candidates must be willing and eligible to obtain SC clearance.

Key Responsibilities

• Design, develop, and maintain embedded C++ software for real?time, mission?critical systems
• Contribute to development within safety?regulated environments, following high?integrity software practices
• Develop and integrate low?level software components and system interfaces
• Support unit, integration, and system?level testing to ensure deterministic and reliable behaviour
• Collaborate with systems, electronics, and test engineers to integrate software into complex platforms
• Produce clear and traceable technical documentation suitable for regulated engineering environments

Additional Information

Why join us?

We bring together entrepreneurial, tech-driven people to deliver innovative solutions for leading companies.

At ALTEN, you’ll work on exciting projects, supported by ongoing learning, mentoring, and clear career development tailored to your goals.

Join a passionate team and help build tomorrow, today.

In short you get

• A personalised career path and a rewarding management style
• A huge diversity of engineering projects and industries
• Private Medical Insurance
• Cycle & Tech Scheme
• Employee assistance programme
• Life insurance & Pension Scheme
• Social atmosphere, regular gatherings & team buildings
• Flexible way of working (role dependent)

We are proud to support the Armed Forces Covenant & actively encourage applications from members of the Armed Forces community, including veterans, reservists, service leavers, and military spouses/partners. We recognise the value of military skills and experience and are committed to ensuring that no applicant is unfairly disadvantaged during our recruitment and selection processes.

ALTEN is committed to fostering a diverse and inclusive workplace and values the strength that comes from a global mix of backgrounds and perspectives. We welcome applications from all suitably qualified candidates, regardless of background or protected characteristics under the Equality Act 2010. If you require any reasonable adjustments during the recruitment process, please let us know.

This role may require you to have or be willing to go through Security Clearance. As part of the onboarding process candidates will be asked to complete a Baseline Personnel Security Standard; details of the evidence required to apply may be found on the government website Gov.UK. If you are unable to meet this and any associated criteria, then your employment may be delayed, or rejected. Details of this will be discussed with you at interview.

Visa sponsorship: check with employer