Do you love to dive into application performance? Are you the type of engineer that pores over source and logs to figure out application internals, looking to get that extra % of performance? Are you able to tune a system optimally and find ways that the system could improve further with code changes? The Amazon Corretto team is looking for engineers to help improve the performance of OpenJDK and Java-based services across Amazon, AWS, and AWS’ customers. We care about optimization for high scalability, availability, and efficiency, and also about going above and beyond to provide all Corretto and OpenJDK users with the best possible Java experience.

As a member of the team, you will have the opportunity to contribute to Corretto, OpenJDK, and successfully running Amazon and AWS customers’ services. As a performance engineer on the Corretto team, you will work closely with application owners to understand how real-world apps work and help them get the most out of their runtimes. You will analyze data looking for opportunities to improve runtime configuration but also work closely with JVM GC and Compiler engineers to identify and implement improvements in OpenJDK, extending benefits beyond just single services. You will have a deep understanding of how garbage collection and other aspects of managed runtimes impact performance and of code generation/optimization. You will also participate in writing and tuning benchmarks, using them to verify improvements and guard against regressions.

About Amazon Corretto
Amazon Corretto is Amazon’s distribution of OpenJDK, used to run our thousands of Java services and also deployed by many AWS customers. The Corretto team is focused on improving OpenJDK for all Java users by focusing on performance, particularly on ARM64 as used by AWS’ Graviton range of processors, and features like the Generational Shenandoah garbage collector. We work with the community to help maintain the Long-Term Supported (LTS) versions of OpenJDK as well as contribute to the bleeding edge. We are looking to expand the Corretto team to participate even more in the community and contribute to the long-term success of OpenJDK as a platform.

While Corretto is a relative newcomer to the scene, our team is composed of OpenJDK Authors, Committers, and Reviewers, some with decades of experience in JDK, languages, compilers, and managed runtimes. We learn about where to invest in OpenJDK from running some of the world’s largest Java services. We are firm believers in Open Source and are looking for like-minded people who are interested in working in the open with the community.

EVEN IF YOU ONLY MEET SOME OF THE REQUIREMENTS, OR BELIEVE YOU AREN’T EXPERIENCED ENOUGH, WE ARE STILL INTERESTED IN HEARING FROM YOU. We believe that a solid technical foundation and a strong interest in the subject matter can make you successful on the team and we have the opportunities to help you learn and grow in this space. Knowledge and experience in related technologies are generally applicable and valuable.

Java is the most popular language for services in Amazon and is used in nearly all public-facing AWS services. Because of this, we have a vested interest in running the best-possible JDK in areas like security and performance. In 2018, the AWS JDK team migrated Amazon's default JDK to OpenJDK. In order to do this we built rigorous security and quality mechanisms around OpenJDK. We are now able to apply security and Amazon custom patches to the internal OpenJDK as soon as they're available. In early 2019, we took this work public and launched Amazon Corretto, our distribution of OpenJDK. With Corretto, we make our work on OpenJDK available to our customers and the OpenJDK community at large.

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About AWS Platform
AWS has the most services and more features within those services, than any other cloud provider–from infrastructure technologies like compute, storage, and databases–to emerging technologies, such as machine learning and artificial intelligence, data lakes and analytics, and Internet of Things. AWS Platform is the glue that holds the AWS ecosystem together. Whether its Identity features such as access management and sign on, cryptography, console, builder & developer tools, and even projects like automating all of our contractual billing systems, AWS Platform is always innovating with the customer in mind. The AWS Platform team sustains over 750 million transactions per second.


About Us
Here at AWS, we embrace our differences. We are committed to furthering our culture of inclusion. We have ten employee-led affinity groups, reaching 40,000 employees in over 190 chapters globally. We have innovative benefit offerings, and host annual and ongoing learning experiences, including our Conversations on Race and Ethnicity (CORE) and AmazeCon (gender diversity) conferences. Amazon’s culture of inclusion is reinforced within our 14 Leadership Principles, which remind team members to seek diverse perspectives, learn and be curious, and earn trust.

Inclusion
Here at AWS, we embrace our differences. We are committed to furthering our culture of inclusion. We have ten employee-led affinity groups, reaching 40,000 employees in over 190 chapters globally. We have innovative benefit offerings, and we host annual and ongoing learning experiences, including our Conversations on Race and Ethnicity (CORE) and AmazeCon (gender diversity) conferences. Amazon’s culture of inclusion is reinforced within our 14 Leadership Principles, which remind team members to seek diverse perspectives, learn and be curious, and earn trust.

Work/Life Balance
Our team puts a high value on work-live balance. It isn’t about how many hours you spend at home or at work; it’s about the flow you establish that brings energy to both parts of your life. We believe striking the right balance between your personal and professional life is critical to life-long happiness and fulfillment. We offer flexibility in working hours and encourage you to find your own balance between your work and personal lives.

Mentorship & Career Growth
Our team is dedicated to supporting new members. We have a broad mix of experience levels and tenures, and we’re building an environment that celebrates knowledge sharing and mentorship. Our senior members enjoy one-on-one mentoring and thorough, but kind, code reviews. We care about your career growth and strive to assign projects based on what will help each team member develop into a better-rounded engineer and enable them to take on more complex tasks in the future.

Learn more about Amazon on our Day 1 Blog: https://blog.aboutamazon.com/”

"Remote/Hybrid Work Options Available
We value your time to innovate and recognize the need for heads down time to focus on a build. We also value in-person collaboration and time spent face-to-face. Our team affords engineers with options to work in the office every day or work remotely in a flexible hybrid schedule if located near one of our Amazon offices."

AWS has the most services and more features within those services, than any other cloud provider–from infrastructure technologies like compute, storage, and databases–to emerging technologies, such as machine learning and artificial intelligence, data lakes and analytics, and Internet of Things. Whether its Identity features such as access management and sign on, cryptography, console, builder & developer tools, and even projects like automating all of our contractual billing systems, AWS Platform is always innovating with the customer in mind. The AWS Platform team sustains over 750 million transactions per second.

Amazon is committed to a diverse and inclusive workplace. Amazon is an equal opportunity employer and does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status. For individuals with disabilities who would like to request an accommodation, please visit https://www.amazon.jobs/en/disability/us.

BASIC QUALIFICATIONS

· Knowledge of language, compiler and/or runtime internals. Java and JDK ideal, but other managed runtimes (such as .NET CLR) are valuable experiences.
· Bachelor’s Degree in Computer Science or related field or equivalent experience to a Bachelor's degree based on 3 years of work experience for every 1-year of education.
· 5+ years professional experience in software development
· Computer Science fundamentals in object-oriented design, data structures, and performance analysis.
· Proficiency in, at least, two modern programming languages such as C, C++, C#, Java, Python, or Ruby.

PREFERRED QUALIFICATIONS

· Masters degree or higher in Computer Science or related field.
· Experience contributing to open source projects, preferably contributing to a runtime or widely used library.
· Experience taking a leading role in building complex software systems that have been successfully delivered to customers.
· Practice of modern software engineering, including coding standards, code reviews, source control management, build processes, testing, and releasing.
· Experience with distributed computing and enterprise-wide system operations.
· Experience in communicating with users, other technical teams, and senior management to collect requirements, describe software product features, technical designs, and product strategy.
· Experience mentoring junior software engineers and make them more effective.
· Experience influencing software engineers' best practices in your organization.
· Hands-on expertise in many disparate technologies, typically ranging from front-end user interfaces through to back-end systems and all points in between.
Amazon is committed to a diverse and inclusive workplace. Amazon is an equal opportunity employer and does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status. For individuals with disabilities who would like to request an accommodation, please visit https://www.amazon.jobs/en/disability/us