LLVM compiler engineer

Codasip; Cambridge; On-site; GBP 90,000 - 120,000; Full time

Job summary

Codasip, headquartered in Europe with a design center in Cambridge, is seeking a Senior/Principal Compiler Engineer to join the Embedded Software team. You will develop and optimize our LLVM-based toolchain for Codasip’s embedded CPU cores and CHERI-enabled technologies.

You will mentor junior engineers, collaborate on microarchitectural implications, and explore new compute architectures while supporting both customer projects and Codasip’s long-term software roadmap.

Qualifications

• Experience with LLVM compiler and related tooling.
• Experience with the C/C++ clang frontend.
• Understanding of high-level hardware microarchitecture and its software impact.
• Desire to learn and mentor others in a fast-paced environment.
• Excellent communication across technical and management levels.

Responsibilities

• LLVM compiler development for Codasip cores and extensions.
• Provide deep technical software advice to internal and external customers.
• Develop capabilities and processes within the Embedded Software team.

Skills

LLVM compiler

C/C++ clang frontend

Hardware microarchitecture knowledge

Mentoring

Communication skills

Tools

RISC-V

Rust compiler

CHERI integration

Studio EDA tool

Job description

**Please note this role is only open to candidates with working rights in UK**

Location: Preferably based at our design center in Cambridge or Bristol.

Seniority: Senior, Principal.

Welcome to Codasip

At Codasip, we’re redefining the future of computing. Following a bold strategic pivot toward cyber-resilient semiconductor architectures, we are building next-generation processors and systems where security is embedded at the very core by design, not as an afterthought. As we expand our portfolio of secure, CHERI-enabled technologies and focus on delivering architecture-first security solutions, there has never been a more exciting time to join. We are embarking on clean-sheet designs and expanding the teams of engineers who can establish high-quality working practices as they explore new ground. Be part of a global team shaping the next era of secure computing where innovation, ownership, and impact go hand in hand.

We are looking for a Compiler Engineer to join our Embedded Software team and be part of realizing a whole new paradigm in semiconductors and microprocessor design. The role will involve developing and enhancing our LLVM compiler to support cutting edge new technologies and concepts that Codasip are bringing to the market.

The scope of the work is broad, varied, and technically challenging and will include:

• Customizing and optimizing LLVM to support Codasip’s standard and customized embedded CPU cores. As well as supporting our standard RISC-V cores, this work will involve enhancing the compiler to work with custom hardware extensions or even completely new processor architectures developed using our Studio EDA tool.
• Supporting the Embedded Software team engineers with compiler expertise to help optimize software.
• Supporting the processor design teams with compiler expertise to guide their microarchitectural design and optimization.
• Exploring compiler technology to support novel compute architectures and technologies.
• Working with the Codasip Studio EDA tool compiler team to improve the tool’s compiler.

The role demands flexibility and lateral thinking. You will be working on both short-term customer-driven projects, as well as longer-term strategic Codasip software products.

You will act as a software technical expert within the company and will be expected to contribute expert advice to both internal and external customers. You will also be expected to spread your knowledge and experience within the team and mentor more junior team members.

While Codasip is headquartered in Europe, our approach and culture are typical of Silicon Valley, meaning that we value prudent risk taking and “out of the box” thinking. We are a well-funded start-up poised for dynamic growth based on our leading edge product portfolio.

RISC-V is a revolutionary technology in the semiconductor industry. This role will have high impact and visibility in Codasip and in the growing RISC-V world.

Main responsibilities include:

• LLVM compiler development
• Providing deep technical software advice and expertise
• Developing the capabilities, skills and processes within the wider Embedded Software team

The core skills and competencies:

• In-depth knowledge of the LLVM compiler
• Knowledge of the C/C++ clang frontend
• Knowledge of high-level hardware microarchitecture and its effects on software performance
• A flexible and adaptable attitude to work
• A desire to learn and also positively influence the technical development of others

The following skills and experience are highly desirable:

• Experience with RISC-V technologies
• Experience of implementing complex software security technologies in the compiler (e.g. CHERI)
• Rust language compiler experience
• The ability to communicate effectively at both the technical and management level

Get to Know Us

• Codasip announces strategic pivot and divestiture
• CHERI-RISC-V standardisation status - Tariq Kurd | CHERITech'25
• Why Codasip went all‑in on CHERI – CHERI Alliance