Senior C++ Engineer (Modelling)

Arm; Cambridge; Hybrid; GBP 60,000 - 85,000; Full time

Job summary

A leading technology company in Cambridge seeks a Senior C++ Engineer to drive the direction of CPU architecture models. You'll ensure performance and accuracy while mentoring team members. Ideal candidates will have experience in system-level software development and modern C++. This role offers hybrid working options, emphasizing a balance between performance and personal wellbeing.

Qualifications

• Strong experience in system-level software development.
• Advanced proficiency in modern C++.
• Track record of driving technical improvements.
• Ability to influence peers and improve team performance.

Responsibilities

• Drive technical direction and evolution of C++ CPU architecture models.
• Promote clarity in design decisions and remove obstacles.
• Mentor engineers and support their growth.

Skills

System-level software development (CPU/IP/SoC modelling)

Advanced proficiency in modern C++ (C++14 or newer)

Driving technical improvements

Influencing peers

Job description

Overview

Are you excited about modern C++ and CPU architecture, driven by impact, and enjoy collaborating with others to achieve shared high‑reaching goals? If so, we would love to have you on our team!

Our Fast Models products enable developers around the world to write and validate software years before their target Arm‑based hardware is available, accelerating innovation across the industry. Our team builds high‑fidelity models of innovative Arm technologies that power future computing systems, from embedded platforms to supercomputers.

As we continue to evolve our Fast Models technology, we’re growing our CPU architecture modelling teams in Cambridge, hiring engineers from experienced through to principal level.

Responsibilities

You will drive the technical direction and evolution of our C++ CPU architecture models, ensuring they meet demanding standards of performance, accuracy, and scalability. As a senior technical voice, you will promote clarity in design decisions, remove obstacles that slow the team down, make high‑impact technical calls and set high expectations for execution, accountability, and engineering excellence, influencing both code and culture. You will also mentor engineers by stretching them technically and supporting their growth through constructive challenge and high standards.

Required Skills And Experience

• Strong experience in system‑level software development (CPU/IP/SoC modelling or similar domains)
• Advanced proficiency in modern C++ (C++14 or newer)
• A track record of driving technical improvements that delivered measurable impact
• Experience influencing peers and raising performance standards across a team

NICE TO HAVE Skills and Experience

• Experience with Arm CPU architecture
• Experience with Fast Models or similar simulation technologies
• Strong debugging skills across complex system‑level environments
• Familiarity with modern testing frameworks and CI/CD practices
• Experience leading significant refactoring, modernization, or performance‑improvement efforts

Accommodations at Arm

At Arm, we want to build extraordinary teams. If you need an adjustment or an accommodation during the recruitment process, please email [e-mail]. By sending us the requested information, you consent to its use by Arm to arrange for appropriate accommodations. All accommodation or adjustment requests will be treated with confidentiality, and information concerning these requests will only be disclosed as necessary to provide the accommodation. Although this is not an exhaustive list, examples of support include breaks between interviews, having documents read aloud, or office accessibility. Please email us about anything we can do to accommodate you during the recruitment process.

Hybrid Working at Arm

Arm’s approach to hybrid working is designed to create a working environment that supports both high performance and personal wellbeing. We believe in bringing people together face to face to enable us to work at pace, whilst recognizing the value of flexibility. Within that framework, we empower groups/teams to determine their own hybrid working patterns, depending on the work and the team’s needs. Details of what this means for each role will be shared upon application. In some cases, the flexibility we can offer is limited by local legal, regulatory, tax, or other considerations, and where this is the case, we will collaborate with you to find the best solution. Please talk to us to find out more about what this could look like for you.

Equal Opportunities at Arm

Arm is an equal opportunity employer, committed to providing an environment of mutual respect where equal opportunities are available to all applicants and colleagues. We are a diverse organization of dedicated and innovative individuals, and don’t discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.