The core distributed systems Platform team using Golang.

• Cross GCP project migrations of live customer data at scale. Copying, filtering, mutating data across GCS buckets and GCP Firestore Entities.
• On call responding to customer issues with realtime AppEngine/GKE Event ingestion and batch processing GCP Pub/Sub messaging based jobs framework.

The APM Agent team.

• Java instrumentation for APM using a C++ native profiler library with a Java jar using JNI.
• Golang based collector for open source distributed tracing (Zipkin, Jaeger, OpenTelemetry)
• New support for Java frameworks focussing on distributed tracing:
  • Reactive Streams (Spring WebFlux, Reactor)
  • Jetty (Apache CXF)

The APM group, developing the Java Agent and maintaining the existing PHP & .NET (IIS) Agents.

• Java instrumentation for Application Performance Monitoring (APM), using the ASM library:
  • Instrumentation of a running Java VM, rather than invoking the Java Agent at startup
  • Select Java methods for instrumentation based on Annotations
  • OCI & Kubernetes/OKE resource discovery using the Instance Metadata Service
  • Jetty/Dropwizard resource discovery
• Prototypes:
  • RASP features for Oracle APM; Java probes in App Servers for detecting SQL injection, SQL audit, session begin/end, and authentication failure events.
  • Bayesian anomaly detection; converted data scientist python research to Java.
  • Rust based lightweight proxy server to detect and parse SQL for possible security monitoring.

The Linux Engineering group, focussed on SPARC features and bugs for gcc, glibc, & binutils.

• SPARC ADI (Application Data Integrity) for glibc malloc.
• misalign memory access in gcc for SPARC.
• SPARC ASI (Alternate Space Identifier) support in binutils.

The Code Analyzer team of the Oracle Developer Studio group. Developing the Discover and Uncover tools.

• A shared memory based custom memory error checker for the Oracle database team. A complete solution was provided - fast!(~2x), integrated with their build, stack trace with symbolic information, source line information, allocation/free stack trace
• Developed the runtime library for SPARC SSM/ADI (hardware assisted memory checking). Worked with a customer (SAS) to get their prototype working. Talked about this experience at OOW 2015.

The Global Optimizer team of the Studio compiler group. Developed the -xlinkopt Studio compiler option.

• Reading and writing ELF relocatable object and binary files.
• Disassembler and re-assembler for IA-32/AMD64 and SPARC.
• Building the whole program control flow, data flow, & call graphs.
• Designed and implemented the interface for passing profile and annotation information from the code generator to our tools.
• Reading and writing Studio and gcc exception handling structures (.eh_frame, .gcc_except_table).
• Handling C++ template code in object files.
• Several binary optimizations (see patents).
• DWARF debugging support in our tools.