Senior JVM C/C++ Developer

Your role and responsibilities

Depending on your interests and expertise, you may:

• Design and implement GC algorithms to optimize memory usage and reduce pause times.
• Develop advanced JIT compiler optimizations to improve execution speed and startup performance.
• Enhance the VM core, including threading, synchronization, class loading, and bytecode execution.
• Analyze and tune performance across a wide range of workloads using profiling and telemetry tools.
• Collaborate across teams to ensure seamless integration between GC, JIT, and VM subsystems.
• Mentor junior developers in the field of software development
• Contribute to and influence open-source projects such as Eclipse OpenJ9 and OpenJDK.
• Support enterprise clients by diagnosing and resolving complex runtime issues in production environments

Required education

Bachelor's Degree

Preferred education

Master's Degree

Required technical and professional expertise

• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
• 3-6 years experience demonstrating strong proficiency in C or C++, with systems-level development experience.
• Solid understanding of operating system fundamentals (memory, threading, synchronization).
• Experience with debugging and profiling tools (e.g., gdb, perf, valgrind).
• Excellent problem-solving skills and a passion for deep technical challenges.

Preferred technical and professional experience

• Experience in one or more of the following areas:
  
  
  • Garbage Collection algorithms and memory management
  • Compiler theory and JIT optimization techniques
  • Virtual machine architecture and runtime services
• Familiarity with Java internals, JVM architecture, and performance tuning.
• Contributions to OpenJDK, Eclipse OpenJ9, or similar open source projects are a strong asset.

ABOUT BUSINESS UNIT

IBM Software infuses core business operations with intelligence-from machine learning to generative AI-to help make organizations more responsive, productive, and resilient. IBM Software helps clients put AI into action now to create real value with trust, speed, and confidence across digital labor, IT automation, application modernization, security, and sustainability. Critical to this is the ability to make use of all data, because AI is only as good as the data that fuels it. In most organizations data is spread across multiple clouds, on premises, in private datacenters, and at the edge. IBM's AI and data platform scales and accelerates the impact of AI with trusted data, and provides leading capabilities to train, tune and deploy AI across business. IBM's hybrid cloud platform is one of the most comprehensive and consistent approach to development, security, and operations across hybrid environments-a flexible foundation for leveraging data, wherever it resides, to extend AI deep into a business.

YOUR LIFE @ IBM

In a world where technology never stands still, we understand that, dedication to our clients success, innovation that matters, and trust and personal responsibility in all our relationships, lives in what we do as IBMers as we strive to be the catalyst that makes the world work better.

Being an IBMer means you'll be able to learn and develop yourself and your career, you'll be encouraged to be courageous and experiment everyday, all whilst having continuous trust and support in an environment where everyone can thrive whatever their personal or professional background.

Our IBMers are growth minded, always staying curious, open to feedback and learning new information and skills to constantly transform themselves and our company. They are trusted to provide on-going feedback to help other IBMers grow, as well as collaborate with colleagues keeping in mind a team focused approach to include different perspectives to drive exceptional outcomes for our customers. The courage our IBMers have to make critical decisions everyday is essential to IBM becoming the catalyst for progress, always embracing challenges with resources they have to hand, a can-do attitude and always striving for an outcome focused approach within everything that they do.

Are you ready to be an IBMer?

ABOUT IBM

IBM's greatest invention is the IBMer. We believe that through the application of intelligence, reason and science, we can improve business, society and the human condition, bringing the power of an open hybrid cloud and AI strategy to life for our clients and partners around the world.

Restlessly reinventing since 1911, we are not only one of the largest corporate organizations in the world, we're also one of the biggest technology and consulting employers, with many of the Fortune 500 companies relying on the IBM Cloud to run their business.

At IBM, we pride ourselves on being an early adopter of artificial intelligence, quantum computing and blockchain. Now it's time for you to join us on our journey to being a responsible technology innovator and a force for good in the world.

IBM is proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, genetics, pregnancy, disability, neurodivergence, age, or other characteristics protected by the applicable law. IBM is also committed to compliance with all fair employment practices regarding citizenship and immigration status.

OTHER RELEVANT JOB DETAILS

Must have the ability to work in Canada without sponsorship.

This role will involve working with technology that is covered by Export Regulations sanctions. If you are a Foreign National from any of the following US sanctioned countries (Cuba, Iran, North Korea, Syria, and the Crimea, Luhansk, Donetsk, Kherson, and Zaporizhia regions of Ukraine) on a work permit, you are not eligible for employment in this position.

Client-provided location(s): Markham, Canada

Job ID: IBM-68002

Employment Type: OTHER

Posted: 2025-10-24T18:51:59