Helen L - Senior Software Engineer In Data

Helen L

Senior Software Engineer In Data

Sammamish, Washington, United States

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Summary

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Rockstar

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Top School

Helen L is a Senior Software Engineer in Data with over 15 years in software development and testing and roughly a decade specializing in designing and building big data pipelines on the Azure stack. At Microsoft she combines hands-on engineering with data orchestration expertise—ADL, ADF, Azure Synapse, Cosmos—and strong analytics and visualization skills in Power BI and Excel. Her background spans roles from SDET to senior data engineer and technical lead, giving her a rare blend of test-first discipline and production data engineering. She contributes to notable open-source Java projects (ApplicationInsights and OpenTelemetry), focusing on robust back-end fixes and maintainability improvements that reflect a focus on reliability at scale. A fast learner with solid communication and Scrum experience, she brings a product-quality mindset and an appetite for solving thorny data-processing challenges.

6 years of coding experience

13 years of employment as a software developer

Queen's University

Github Skills (14)

opentelemetry10

javas10

junit10

java10

test-automation10

testing10

mockito9

spring-boot9

jdbc9

code-optimization8

develop7

concurrency7

concurrent-programming7

concurrent7

Programming languages (9)

C#PowerShellTypeScriptJavaOpen Policy AgentMakefileJavaScriptMarkdown

Github contributions (5)

microsoft/ApplicationInsights-Java

Jul 2020 - Jan 2023

Application Insights for Java

Role in this project:

Back-end Developer & Test Automation Engineer

Contributions:35 releases, 1858 reviews, 471 commits in 2 years 6 months

Contributions summary:Helen primarily focused on fixing and improving the existing smoke tests, addressing issues in various applications such as JMS, Spring Boot, CoreAndFilter, WebFlux, Kafka, MongoDB, and Spring Cloud Stream. Their contributions involved modifying test code to align with changes in the application's functionality and dependencies. Furthermore, the user updated the exporter to use new semantic attributes and addressed test failures caused by race conditions in Kafka and Spring Cloud Stream.

java-agentapplication-insightssqlobservabilitysdk

open-telemetry/opentelemetry-java-instrumentation

Jul 2020 - Oct 2024

OpenTelemetry auto-instrumentation and instrumentation libraries for Java

Role in this project:

Back-end Developer

Contributions:97 reviews, 55 PRs, 239 comments in 4 years 4 months

Contributions summary:Helen's primary contribution focuses on removing the `final` keyword from local variables within the Java code. These changes, applied across multiple files within the `agent-bootstrap` module, suggest a focus on improving code readability and potentially optimizing the bytecode generated by the compiler. The user worked within the context of OpenTelemetry Java instrumentation libraries, specifically on components related to JDBC connection URL parsing. The contributions demonstrate a strong understanding of Java and a focus on code quality and maintainability within the OpenTelemetry project.

instrumentationinstrumentation-librariesjava-agenttracingauto-instrumentation

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