OpenJDK Hotspot Developer

Job description

Introduction
At IBM, work is more than a job - it's a calling: To build. To design. To code. To consult. To think along with clients and sell. To make markets. To invent. To collaborate. Not just to do something better, but to attempt things you've never thought possible. Are you ready to lead in this new era of technology and solve some of the world's most challenging problems? If so, lets talk.

Your Role and Responsibilities
IBM Runtimes team is responsible for building and supporting enterprise quality Java runtimes that are workload optimized for cloud and IBM Systems. IBM Semeru is built using several open-source projects at the Eclipse Foundation (e.g. Adoptium, Temurin, AQAvit, OpenJ9, OMR) and OpenJDK, and the team contributes actively to enhance and support these projects through a fully open-source development process.

As an OpenJDK developer working in the IBM Runtimes team, you will be primarily responsible for collaborating with the OpenJDK community to maintain and enhance the OpenJDK on IBM POWER and Z platforms. For this, you will be primarily contributing to the Hotspot Java virtual machine but may also contribute to OpenJDK class libraries, tools, tests, and documentation. You will also work in Eclipse Adoptium community projects that develop and maintain OpenJDK build and test infrastructure (e.g. Temurin and AQAvit). While these projects use several different programming languages and frameworks, your proficiency in developing and debugging in C++, and Java will be most useful. Strong communication and collaboration skills are required for working with open source community developers across the world on daily basis.

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++
·  2+ year experience in developing in Java
·  1+ year experience in Open-source development and related tools such as git, and GitHub.
·  2+ year experience in low-level programming involving interaction with C++ runtime, OS, threads, memory management, compilers and assemblers.
·  2+ year experience debugging, tracing, and profiling code for resolving functional and performance issues.

Preferred Technical and Professional Expertise

·  Experience in IBM AIX, Linux on POWER and Z
·  Experience with OpenJDK or Hotspot development
·  Experience working in the open software community projects as a contributor or committer.