Senior C++ Developer (Contract)

Instil; Belfast City District; Remote; GBP 70,000 - 100,000; Full time

Job summary

Instil is seeking a Senior Embedded C++ Engineer to join a team delivering low-level firmware for embedded systems. The role focuses on designing, developing, and maintaining performance-critical software in C++ in bare-metal and embedded environments.

The ideal candidate has 7+ years in embedded software, strong hardware interfacing experience, and a passion for solving complex firmware challenges within resource-constrained platforms. Remote UK work is supported.

Qualifications

• 7+ years of commercial experience with C++ in embedded environments.
• Strong background in embedded firmware development for resource-constrained systems.
• Experience with bare-metal programming and hardware interfacing.

Responsibilities

• Design, develop, and maintain embedded software and firmware in modern C++.
• Redevelop and modernise existing low-level software systems.
• Work with hardware in bare-metal environments.
• Debug complex software, firmware, and hardware integration issues.
• Collaborate with hardware, systems, and software teams throughout development lifecycle.
• Optimize for performance, reliability, and resource usage.
• Contribute to software architecture and design reviews.
• Develop and execute testing strategies to ensure quality.
• Participate in code reviews and promote engineering best practices.
• Ensure software meets quality, safety, security, and performance requirements.

Skills

Embedded C++

Bare-metal

Memory management

Linux

Git

Debugging

Teamwork

Hardware interfacing

Tools

RTOS

Job description

We are seeking a Senior Embedded C++ Engineer to join a team developing low-level firmware for embedded systems. This role involves working close to the hardware, designing, developing, and maintaining performance-critical software in C++ within bare-metal and embedded environments. The successful candidate will have a strong background in embedded software development, experience working within resource-constrained systems, and a passion for solving complex technical challenges at the firmware level.

Key Responsibilities

• Design, develop, and maintain embedded software and firmware in modern C++.
• Redevelop, enhance, and modernise existing low-level software systems.
• Work directly with hardware and peripheral devices in bare-metal environments.
• Debug and resolve complex software, firmware, and hardware integration issues.
• Collaborate with hardware, systems, and software engineering teams throughout the development lifecycle.
• Optimise software for performance, reliability, and efficient resource utilisation.
• Contribute to software architecture, design reviews, and technical decision-making.
• Develop and execute testing strategies to ensure product quality and robustness.
• Participate in code reviews and promote engineering best practices.
• Ensure software meets quality, safety, security, and performance requirements.

Required Skills & Experience

• 7+ years of commercial experience developing software in C++.
• Strong background in embedded software or firmware development.
• Experience working with bare-metal systems and low-level programming.
• Solid understanding of embedded architectures, memory management, interrupts, and hardware interfacing.
• Experience debugging complex embedded systems and hardware/software interactions.
• Familiarity with development in Linux-based environments.
• Experience working with version control systems such as Git.
• Strong analytical, troubleshooting, and problem-solving skills.
• Ability to work effectively within multidisciplinary engineering teams.

Desirable Experience

• Exposure to Assembly language and legacy codebases.
• Experience working with ARM or other embedded processor architectures.
• Experience with RTOS-based systems.
• Knowledge of embedded Linux.
• Experience within industrial, aerospace, defence, medical device, or other safety-critical domains.
• Python or scripting experience for automation, testing, or tooling.

Location Requirements

This role is fully remote within the UK. Therefore, candidates can be based anywhere in the United Kingdom.

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