Highlights
We work at the intersection of language runtimes, compilers, and hardware - tuning the JVM and its ecosystem so that thousands of services run faster, use less memory, and scale more efficiently across x86 and Graviton (AArch64) fleets. You will profile real production workloads, identify runtime bottlenecks, prototype and land improvements in the JVM, and help encode that expertise into tools that scale beyond one-to-one consultation.
Numbers & Facts
| Location | Seattle, WA |
| Industry | Retail |
| Company Size | 10,000 employees or more |
| Year Founded | 1994 |
| Website | http://Amazon.com/militaryroles |
Description
The Java Runtimes Team (JRT) owns and advances the Java runtime that powers a large share of Amazon"s production services. We work at the intersection of language runtimes, compilers, and hardware - tuning the JVM and its ecosystem so that thousands of services run faster, use less memory, and scale more efficiently across x86 and Graviton (AArch64) fleets. We contribute directly to OpenJDK and our Corretto JDK, and we build the tooling that turns deep runtime expertise into automated, fleet-wide performance gains.
We are hiring a Runtime Engineer to work across three closely-linked areas: the JIT compiler, garbage collection, and systems-level software optimization. You will profile real production workloads, identify runtime bottlenecks, prototype and land improvements in the JVM, and help encode that expertise into tools that scale beyond one-to-one consultation.
Key job responsibilities
Analyze production JVM workloads to identify compiler, GC, and runtime bottlenecks, and translate findings into concrete optimizations.
Design, implement, and benchmark improvements to JIT compilation, garbage collection, and core runtime subsystems.
Contribute changes upstream to OpenJDK and to Amazon Corretto, working through code review and community processes.
Tune runtime behavior for performance and efficiency across x86 and Graviton (AArch64) architectures.
Build and improve profiling, observability, and auto-tuning tooling so runtime expertise scales across the fleet rather than through manual, per-service consultation.
Validate performance and reliability of changes against real workloads before broad rollout.
Partner with service teams to drive adoption of runtime improvements and newer JDK versions.
About Company
At Amazon, we don’t wait for the next big idea to present itself. We envision the shape of impossible things and then we boldly make them reality. So far, this mindset has helped us achieve some incredible things. Let’s build new systems, challenge the status quo, and design the world we want to live in. We believe the work you do here will be the best work of your life.
Wherever you are in your career exploration, Amazon likely has an opportunity for you. Our research scientists and engineers shape the future of natural language understanding with Alexa. Fulfillment center associates around the globe send customer orders from our warehouses to doorsteps. Product managers set feature requirements, strategy, and marketing messages for brand new customer experiences. And as we grow, we’ll add jobs that haven’t been invented yet.
It’s Always Day 1
At Amazon, it’s always “Day 1.” Now, what does this mean and why does it matter? It means that our approach remains the same as it was on Amazon’s very first day – to make smart, fast decisions, stay nimble, invent, and stay focused on delighting our customers. In our 2016 shareholder letter, Amazon CEO Jeff Bezos shared his thoughts on how to keep up a Day 1 company mindset. “Staying in Day 1 requires you to experiment patiently, accept failures, plant seeds, protect saplings, and double down when you see customer delight,” he wrote. “A customer-obsessed culture best creates the conditions where all of that can happen.” You can read the full letter here
Our Leadership Principles
Our Leadership Principles help us keep a Day 1 mentality. They aren’t just a pretty inspirational wall hanging. Amazonians use them, every day, whether they’re discussing ideas for new projects, deciding on the best solution for a customer’s problem, or interviewing candidates. To read through our Leadership Principles from Customer Obsession to Bias for Action, visit https://www.amazon.jobs/principles
Wherever you are in your career exploration, Amazon likely has an opportunity for you. Our research scientists and engineers shape the future of natural language understanding with Alexa. Fulfillment center associates around the globe send customer orders from our warehouses to doorsteps. Product managers set feature requirements, strategy, and marketing messages for brand new customer experiences. And as we grow, we’ll add jobs that haven’t been invented yet.
It’s Always Day 1
At Amazon, it’s always “Day 1.” Now, what does this mean and why does it matter? It means that our approach remains the same as it was on Amazon’s very first day – to make smart, fast decisions, stay nimble, invent, and stay focused on delighting our customers. In our 2016 shareholder letter, Amazon CEO Jeff Bezos shared his thoughts on how to keep up a Day 1 company mindset. “Staying in Day 1 requires you to experiment patiently, accept failures, plant seeds, protect saplings, and double down when you see customer delight,” he wrote. “A customer-obsessed culture best creates the conditions where all of that can happen.” You can read the full letter here
Our Leadership Principles
Our Leadership Principles help us keep a Day 1 mentality. They aren’t just a pretty inspirational wall hanging. Amazonians use them, every day, whether they’re discussing ideas for new projects, deciding on the best solution for a customer’s problem, or interviewing candidates. To read through our Leadership Principles from Customer Obsession to Bias for Action, visit https://www.amazon.jobs/principles
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