About this role
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 systemsContribute to development within safety‑regulated environments, following high‑integrity software practicesDevelop and integrate low‑level software components and system interfacesSupport unit, integration, and system‑level testing to ensure deterministic and reliable behaviourCollaborate with systems, electronics, and test engineers to integrate software into complex platformsProduce clear and traceable technical documentation suitable for regulated engineering environments Required Skills
Strong experience with embedded C++ (C++11/14/17 or later)Proven background delivering software in defence, safety‑critical, or regulated environmentsSolid understanding of real‑time software constraints and deterministic behaviourExperience contributing to verification, validation, and requirements traceability activitiesFamiliarity with configuration management and development lifecycle toolingStrong debugging and problem‑solving ability within complex systemsSoft Skills & Collaboration
Clear and confident communicator across multi‑disciplinary teamsDetail‑oriented, quality‑driven mindsetStrong ownership of technical delivery and accountabilityComfortable operating in process‑heavy, high‑assurance programmesRequired 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 equivalentExperience with Ada within high‑integrity or regulated systemsKnowledge of MISRA C/C++ or secure coding practicesFamiliarity with automated testing, static analysis, or CI/CD pipelines 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 industriesPrivate Medical InsuranceCycle & Tech Scheme Employee assistance programmeLife insurance & Pension SchemeSocial atmosphere, regular gatherings & team buildingsFlexible 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.