Compiler Engineer

Switch Tech Talent

United Kingdom

On-site

GBP 70,000 - 110,000

Full time

14 days+

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Benefits offered by this job

Competitive compensation

Growth opportunities

Ownership of critical projects

Job summary

A technology company specializing in AI infrastructure is seeking a Compiler Engineer to design and extend MLIR dialects and build conversion pipelines. This mid-senior level role requires expertise in C++ and at least three years of experience in compiler development. Join a fast-paced team and work on critical compiler subsystems with a focus on reducing compute costs and improving performance.

Qualifications

3+ years’ experience in production compiler or toolchain development (LLVM/MLIR, GCC, etc.).
Expertise in C++17/20.
Proven performance engineering skills.

Responsibilities

Design and extend MLIR dialects, building conversion pipelines.
Implement and optimise compiler passes.
Collaborate on ABI and kernel launch strategies.
Profiling, measuring, and preventing regressions using tools such as nsight-compute, rocprof, vtune, and perf, supported by CI’d performance suites.
Driving upstream improvements to LLVM/MLIR, authoring RFCs, and reviewing PRs.
Collaborating with model optimisation and runtime teams on ABI, graph partitioning, and kernel launch strategies.
Experience with LLVM and/or MLIR.
3+ years’ experience in production compiler or toolchain development (LLVM/MLIR, GCC, IREE/XLA/TVM, etc.).
Expertise in C++17/20.
Strong understanding of GPU architecture.
Proven performance engineering skills.

Skills

LLVM/MLIR

C++17/20

Performance engineering

GPU architecture understanding

Production compiler or toolchain development

Tools

nsight-compute

rocprof

vtune

perf

Job description

Overview

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This range is provided by Switch Tech Talent. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Direct message the job poster from Switch Tech Talent

Role

Role: Compiler Engineer (mid, senior, staff)

About the Company

An AI Infrastructure Start-up (B2B SaaS) are building a next-generation platform and seeking Mid/Senior/Staff Compiler Engineers.

Their LLVM/MLIR-based pipeline delivers lower latency, higher throughput, and improved cost efficiency across GPUs, enabling teams to scale production AI without scaling the bill.

Responsibilities

Designing and extending MLIR dialects, building conversion pipelines.
Implementing and optimising passes.
Extending and maintaining backends, curating and writing custom kernels (CUDA/HIP) with runtime integration for optimal occupancy and bandwidth use.
Profiling, measuring, and preventing regressions using tools such as nsight-compute, rocprof, vtune, and perf, supported by CI’d performance suites.
Driving upstream improvements to LLVM/MLIR, authoring RFCs, and reviewing PRs.
Collaborating with model optimisation and runtime teams on ABI, graph partitioning, and kernel launch strategies.
Experience with LLVM and/or MLIR.
3+ years’ experience in production compiler or toolchain development (LLVM/MLIR, GCC, IREE/XLA/TVM, etc.).
Expertise in C++17/20.
Strong understanding of GPU architecture.
Proven performance engineering skills.

Compiler Engineer Desirable Experience

Exposure to IREE, OpenXLA/XLA, TVM, TensorRT-LLM, or Glow.
Knowledge of quantisation (INT8/INT4), dynamic shapes, and autotuning.
Familiarity with CPU vectorisation (AVX2/AVX-512/SVE), register allocation, or polyhedral techniques.
Experience with FPGA/HLS flows or custom accelerator backends.

Why Join

Opportunity to take ownership of critical compiler subsystems with visible upstream impact.
Work on one of the most complex and valuable challenges in AI, translating FLOPs into real-world performance.
Contribute to reducing compute costs, lowering CO₂ emissions, and easing demand on the global power grid.
Competitive compensation* and growth opportunities within a fast-paced, highly technical team.

Seniority and Employment Details