LLVM Back-end Engineer

MulticoreWare, Inc.; Chennai; On-site; INR 2,500,000 - 4,200,000; Full time

Job summary

MulticoreWare, Inc. is seeking an experienced LLVM Backend Engineer to design and implement compiler backend components for custom or existing hardware architectures.

You will focus on code generation, IR transformations, and target-specific optimizations to deliver high-performance, efficient code. The role requires strong C/C++ skills, deep knowledge of LLVM, and hands-on experience with backend and middle-end optimizations.

Qualifications

• BTech/BE/MTech/ME/MS/PhD in Computer Science, Computer Engineering, Electronics/ECE, or a related field.
• Strong C/C++ programming skills and solid understanding of compiler fundamentals.
• Hands-on experience with LLVM, LLVM IR, and backend/code-generation components.
• Understanding of instruction selection, register allocation, instruction scheduling, and code emission.
• Experience with compiler optimizations and performance/code-quality analysis.
• Experience developing or modifying LLVM backend components for a target architecture.
• Knowledge of IR-level and middle-end transformations and optimization passes.
• Ability to analyze generated assembly and identify performance bottlenecks.

Responsibilities

• Develop and maintain the LLVM backend for a custom or existing target architecture.
• Implement and extend instruction selection,register allocation, scheduling, and code emission.
• Design and implement IR-level optimization passes to improve performance, memory efficiency, and code quality.
• Work on LLVM middle-end transformations andoptimizations.
• Analyze and tune generated assembly/code quality for performance bottlenecks.
• Collaborate with hardware teams to ensurearchitectural features are fully leveraged by the compiler backend.
• Contribute to internal LLVM forks or upstream where applicable.

Skills

C/C++ programming

LLVM/LLVM IR

Compiler fundamentals

Instruction selection

Register allocation

Instruction scheduling

Code emission

Performance analysis

Education

BTech/BE/MTech/ME/MS/PhD in CS/CE/EE

Tools

LLVM Toolchain

Job description

MulticoreWare is a global software solutions & products company with its HQ in San Jose, CA, USA. With worldwide offices, it serves its clients and partners in North America, EMEA and APAC regions. Started by a group of researchers, MulticoreWare has grown to serve its clients and partners on HPC & Cloud computing, GPUs, Multicore & Multithread CPUS, DSPs, FPGAs and a variety of AI hardware accelerators.

MulticoreWare was founded by a team of researchers that wanted a better way to program for heterogeneous architectures. With the advent of GPUs and the increasing prevalence of multi-core, multi-architecture platforms, our clients were struggling with the difficulties of using these platforms efficiently.

We started as a boot-strapped services company and have since expanded our portfolio to span products and services related to compilers, machine learning, video codecs, image processing and augmented/virtual reality. Our hardware expertise has also expanded with our team; we now employ experts on HPC and Cloud Computing, GPUs, DSPs, FPGAs, and mobile and embedded platforms. We specialize in accelerating software and algorithms, so if your code targets a multi-core, heterogeneous platform, we can help.

Job Description

Weare looking for an experienced LLVM Backend Engineer to design and implementbackend components of the compiler toolchain. The role focuses on building andoptimizing the code generation flow targeting a custom or existing hardwarearchitecture. The candidate will work on LLVM IR transformations, instructionselection, and target-specific optimizations to deliver high-performance,efficient compiled code.

Responsibilities:

• Develop and maintain the LLVM backend for acustom or existing target architecture.
• Implement and extend instruction selection,register allocation, scheduling, and code emission.
• Design and implement IR-level optimization passesto improve performance, memory efficiency, and code quality.
• Work on LLVM middle-end transformations andoptimizations.
• Analyze and tune generated assembly/code qualityfor performance bottlenecks.
• Collaborate with hardware teams to ensurearchitectural features are fully leveraged by the compiler backend.
• Contribute to internal LLVM forks or upstreamwhere applicable.

Requirements

Education:

BTech/BE/MTech/ME/MS/PhD in Computer Science, Computer Engineering,Electronics/ECE, or a related field.

Technical Skills (Must haves):

• Strong C/C++ programming skills and solidunderstanding of compiler fundamentals.
• Hands-on experience with LLVM, LLVM IR, andbackend/code-generation components.
• Understanding of instruction selection, registerallocation, instruction scheduling, and code emission.
• Experience with compiler optimizations andperformance/code-quality analysis.

Need to have (Can be bridged):

• Experience developing or modifying LLVM backendcomponents for a target architecture.
• Knowledge of IR-level and middle-endtransformations and optimization passes.
• Ability to analyze generated assembly andidentify performance bottlenecks.

Good to have (Not essential):

• Experience with custom hardware architectures,accelerators, CPU/GPU/DSP/FPGA targets, or domain-specific architectures.
• Experience contributing to upstream LLVM ormaintaining an internal LLVM fork.
• Familiarity with compiler testing, benchmarking,and performance tuning workflows.

Preferred Qualifications (Optional):

• Experience collaborating closely withhardware/architecture teams and translating architectural features intocompiler support.