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Derek Miller

PROFILE

Derek Miller

Worked on backend reliability and correctness for large-scale systems, focusing on two critical bug fixes. In sourcebot-dev/sourcebot, stabilized repository synchronization under high load by introducing concurrency limits with Node.js and Git, preventing resource exhaustion and enabling safer scaling. In Netflix/maestro, addressed routing correctness for the Flow Engine wakeup path using Java and Spring Boot, ensuring all wakeups are routed through the appropriate operation layer and eliminating wakeup loss. Enhanced test coverage and validation to prevent regressions, improving system responsiveness and reliability. Demonstrated strong backend development skills with attention to concurrency control, resource management, and robust automated testing practices.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

2Total
Bugs
2
Commits
2
Features
0
Lines of code
140,781
Activity Months2

Work History

March 2026

1 Commits

Mar 1, 2026

March 2026 monthly focus: delivered a critical routing correctness fix for the Flow Engine wakeup path in Netflix/maestro, completed end-to-end routing validation, and strengthened test coverage to prevent regressions. The upgrade ensures wakeups are routed through FlowOperation, guaranteeing correct pod targeting and eliminating unreliable direct FlowExecutor invocations.

November 2025

1 Commits

Nov 1, 2025

November 2025 performance summary for sourcebot-dev/sourcebot. Key outcomes: Stabilized repository synchronization under high load by implementing concurrency limits; prevented resource exhaustion and improved reliability. This work reduced incident risk during mass repo syncs and prepared the system for scalable growth. Relevant performance improvements and code quality gains were achieved through careful resource management and robust testing.

Activity

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Quality Metrics

Correctness100.0%
Maintainability90.0%
Architecture100.0%
Performance90.0%
AI Usage30.0%

Skills & Technologies

Programming Languages

JavaJavaScriptTypeScript

Technical Skills

AWSBackend DevelopmentConcurrency ControlGitJavaKubernetesNode.jsSpring Bootbackend development

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

sourcebot-dev/sourcebot

Nov 2025 Nov 2025
1 Month active

Languages Used

JavaScriptTypeScript

Technical Skills

Backend DevelopmentConcurrency ControlGitNode.js

Netflix/maestro

Mar 2026 Mar 2026
1 Month active

Languages Used

Java

Technical Skills

AWSJavaKubernetesSpring Bootbackend development