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Snr Software Dev Engineer , Amazon Corretto in Berlin

... Job summaryAre you someone who has a desire to innovate in the Java runtime?The Corretto organisation is looking for senior engineers to join a fast growing team that are launching a new metacircular Java runtime. This new runtime...



Job summary
Are you someone who has a desire to innovate in the Java runtime?

The Corretto organisation is looking for senior engineers to join a fast growing team that are launching a new metacircular Java runtime. This new runtime is being used to transform and accelerate hyper-scale workloads across multiple CPU architectures.

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're 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.

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 used for the majority of services in Amazon and 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.


We have a formal mentor search application that lets you find a mentor that works best for you based on location, job family, job level etc. Your manager can also help you find a mentor or two, because two is better than one. In addition to formal mentors, we work and train together so that we are always learning from one another, and we celebrate and support the career progression of our team members.


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

We offer flexibility in working hours and encourage you to find your own balance between your work and personal life.

Key job responsibilities
Key job responsibilities:

· design and develop sophisticated metacircular features, including instrumentation and recompilation capabilities

· contribute to performance optimization and compliance with industry standard JVM specification

· contributing to the design of future runtime features, and working with teams and services inside AWS to solve their business challenges using this new Java runtime.

· existing deployments of our product must be supported on an on-going basis, and the team will need to address any critical issues in live deployments and debug potential functional/performance regressions

About the team
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.

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