Open Source Compiler Developer

Your role and responsibilities

This position is for an experienced Linux GNU/Open Source Compiler developer who has experience developing, optimizing and tuning code to a specified Hardware Architecture. While the target architecture of this work will be the IBM POWER architecture, experience tuning to x86 or ARM architectures will be directly applicable. As a developer on the Linux on Power team you will be responsible for:

Working with and interlocking with other internal teams and with the Open Source Community for defining, designing, developing and testing Linux on Power specific features in theGCC compiler. Ensuring that those features are accepted upstream and incorporated into the appropriate Linux distributions.

In addition to design and development work you will be responsible for working issues and defects including problem determination, problem recreation, providing fixes, validating fixes and getting fixes accepted by the Community.

As a Open Source Compiler Developer you will,

Enhance, optimize & maintain open source Linux compiler (GCC) for IBM Power processor (ppc64le) architecture

Update open source toolchain to enable new IBM Power processor functions and instructions

Work with open source community to upstream code, enabling the ecosystem to leverage new generation IBM Power processor

Resolve functional issues including recreation & analysis, proposing & validating fixes and working with the community to upstream fixes

This role requires expertise with the POWER instruction architecture, the GNU Compiler Collection (GCC) compiler, Binary Utilities (assembler/loader). Familiarity with software builds, bring-up, test and performance analysis tools used by Linux on Power is desirable along with general hardware skills. Applicant will be engaged in performance analysis and tuning utilizing the POWER instruction profiling tools. Candidates must have the ability to work in a team based environment with global and remote team members.

Candidate should have experience with C/C++, scripting languages, assembler, familiarity with Bugzilla, GIT, open source development tools, simulation tools, performance analysis tools and working with mailing lists.

Required technical and professional expertise

Strong interest in and understanding of Computer Architecture, Operating Systems, Compilers, Runtimes, low level debugging and tracing Effective communication and collaboration skills

3+ years of experience developing in OS-level languages like C or C++

1+ years of experience in assembly language

Experience in Open-source development and related tools such as git, and GitHub.

Preferred technical and professional experience

Experience in low-level programming involving interaction with C++ runtime, OS, threads, memory management, and assemblers. Experience debugging, tracing, and profiling code for resolving functional and performance issues.

Experience in IBM AIX, Linux on POWER and Z

Experience working in the open software community projects as a contributor or committer Exposure to other compilers like LLVM, GoLang