Senior Embedded C++ Engineer – Mission-Critical Systems

Owen Thomas B Corp; 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

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