Software Development Engineer - JVM and JDK, Amazon Corretto

3+ months agoPalo Alto, CA


Location : Seattle/Palo Alto
Are you familiar with compiler and runtime internals? Maybe you have worked on garbage collection in managed runtimes such as HotSpot, the .NET CLR, V8, or Chakra. Maybe you have acquired your knowledge by tuning the performance of running services for performance and resilience. Whatever your path, the JDK team at Amazon, owners of Amazon Corretto, would love to talk with you. We are looking for engineers with experience in one or more of: compiler design, performance, language internals, or similar areas to help us shape the JDK we run at Amazon. We care about optimization for high scalability, availability, and efficiency, and also about going above and beyond to provide the best Java experience for our Amazon internal teams, Corretto users, and the OpenJDK community.

On our team, you will be working on enhancing and evolving OpenJDK. You will identify areas for improvement using data from real running services, develop patches to the OpenJDK compiler, runtime and libraries, and make them available for all Amazon developers to use. You will also be sharing your findings with the rest of the engineering community and contributing improvements back to OpenJDK.

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. 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. We have also taken this knowledge and launched Amazon Corretto, Amazon's distribution of OpenJDK. With Corretto, we can make our enhancements to OpenJDK available to our customers and the OpenJDK community at large.

AWS has the most services and more features within those services, than any other cloud providerfrom infrastructure technologies like compute, storage, and databasesto 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.

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.


• 4+ years of professional software development experience
• 3+ years of programming experience with at least one modern language such as Java, C++, or C# including object-oriented design
• 2+ years of experience contributing to the architecture and design (architecture, design patterns, reliability and scaling) of new and current systems
• 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.


• 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