Senior Software Engineer

RTX; Plymouth; Hybrid; GBP 60,000 - 85,000; Full time

Job summary

Collins Aerospace, a Raytheon Technologies company, invites an experienced Senior Software Engineer to own embedded software components and drive real-time, safety‑critical features. You will collaborate with cross‑functional teams to design, implement and verify software that meets stringent navigation and control requirements at Plymouth.

You’ll develop mainly in C with C++ for tools, participate in architecture decisions and help ensure high quality through robust testing and documentation

Qualifications

• Degree in Software Engineering, Computer Science, Electronics, Aerospace Engineering or related discipline, or equivalent experience.
• Experience across full Software Development Life Cycle (SDLC) with complex software engineering work.
• Experience designing, developing, integrating and verifying real-time embedded software.

Responsibilities

• Take technical ownership of embedded software components and work packages across the full software lifecycle.
• Communicate across multidisciplinary teams and contribute to software architecture decisions.
• Translate system requirements into detailed software requirements and traceability.
• Develop embedded software primarily in C, with some C++ for tools and support systems.
• Produce test specifications and verification procedures and support test coverage.

Skills

Embedded software

C programming

C++

SDLC

Real-time

Visual Studio

Documentation

Education

Bachelor's degree in Software Engineering or related

Tools

Visual Studio

Git

Job description

Date Posted: 2026-11-06

Country: United Kingdom

Location: Plymouth, Plymouth

Position Role Type: Hybrid

Collins Aerospace, a Raytheon Technologies company, is a world leader in advanced and intelligent solutions for the global aerospace and defence industries. With a comprehensive inertial sensing and integrated navigation technology portfolio and deep domain expertise, we deliver cutting‑edge systems that solve our customers' toughest stabilisation, flight control and navigation challenges and help shape the future of aviation and defence.

This is a hybrid role based at our Plymouth site, where we design and manufacture control, navigation, and guidance systems for both air and surface applications. Our world‑class products include MEMS‑based Inertial Measurement Units (IMUs) and the TERPROM Digital Terrain Reference Navigation System.

Our growth plan includes development and extension of our current technologies into state of the art military and civil aircraft applications and we’re looking for exceptional engineers to join us on that journey.

What You Will Do

As a Senior Software Engineer, you will take technical ownership of defined embedded software components and engineering work packages across the full software development lifecycle. Working across multidisciplinary engineering teams, you’ll contribute to software architecture and design decisions, resolve complex technical challenges and support the successful integration and verification of real‑time embedded software solutions.

Key responsibilities include:

• Leading requirements analysis activities for assigned software components and ensuring requirements are clearly defined and understood.
• Translating system requirements into detailed software requirements, including requirements decomposition, analysis and traceability.
• Developing user stories and use cases, ensuring alignment with system-level requirements and operational needs.
• Designing embedded software architectures and detailed software designs, taking technical ownership of assigned design decisions and evaluating technical trade‑offs.
• Producing test specifications and verification procedures, contributing to verification strategies and ensuring appropriate test coverage.
• Developing embedded software, primarily in C, with some C++ for support systems and tools, including the design and optimisation of complex real‑time embedded software components.
• Verifying software against requirements and design specifications, investigating complex defects and ensuring technical issues are resolved.
• Taking technical responsibility for defined hardware and software integration activities, including resolving complex integration challenges across software and hardware interfaces.
• Supporting performance qualification and validation testing, including analysis of results and resolution of technical issues.
• Developing software test tools and utilities, identifying opportunities to improve testing efficiency and software quality.
• Working effectively within cross‑functional engineering teams, providing technical guidance, contributing to design and code reviews and supporting less experienced engineers.
• Providing technical input to project planning, software development estimates, risk identification and delivery of assigned engineering work packages.

What You Will Learn

• Exposure to cutting‑edge navigation and sensing technologies.
• Mentorship and training from industry‑leading experts.
• Opportunities to work on mission‑critical systems used globally.
• A supportive environment that encourages continuous learning and career progression.

Qualifications & Experience

• Degree qualification in Software Engineering, Computer Science, Electronics, Aerospace Engineering or a related discipline, or equivalent industry experience.
• Demonstrated experience across the full Software Development Life Cycle (SDLC), including independently delivering complex software engineering activities.
• Experience designing, developing, integrating and verifying complex real‑time embedded software applications.
• Strong programming skills in C, with exposure to C++, including experience resolving complex software design and development challenges.
• Familiarity with Integrated Development Environments (IDEs).
• Excellent communication and technical documentation skills.
• Strong team‑working capabilities combined with a proactive, self‑motivated approach.
• A customer‑focused mindset with attention to quality and detail.
• Experience using Visual Studio or similar development environments.
• Experience contributing to embedded software architecture and detailed design, including evaluating technical trade‑offs.
• Experience taking technical ownership of software deliverables and collaborating across multidisciplinary engineering teams.

Skills and Experience We Value

While not essential, the following experience would be advantageous: