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Jacob Affinito

PROFILE

Jacob Affinito

Joe Affinito developed and enhanced observability, deployment, and integration features for the newrelic/newrelic-dotnet-agent and related repositories over ten months. He delivered distributed tracing for Azure Functions, OpenSearch instrumentation, and Azure Service Bus support, using C#, .NET, and YAML to improve monitoring and diagnostics across cloud and messaging environments. Joe modernized build pipelines with Docker and GitHub Actions, introduced Windows init containers, and expanded Kubernetes operator support for Windows/.NET agents. His work emphasized robust configuration management, test automation, and cross-platform compatibility, resulting in more reliable deployments, streamlined CI/CD workflows, and improved cloud resource visibility for enterprise .NET applications.

Overall Statistics

Feature vs Bugs

86%Features

Repository Contributions

25Total
Bugs
3
Commits
25
Features
18
Lines of code
10,977
Activity Months10

Work History

October 2025

3 Commits • 2 Features

Oct 1, 2025

Month: 2025-10 — Focused on reliability, cross-platform reach, and CI/CD observability. Cross-repo work delivered Windows workflow hardening, enhanced logging, and Windows/.NET agent support in Kubernetes agents operator. Fixed a critical Windows publish workflow indexing bug, added comprehensive logging to improve pipeline debugging, and expanded supported runtimes with Windows/.NET variants. These changes reduce build/deploy failures, accelerate release readiness, and broaden the product’s Windows coverage. Technologies demonstrated include GitHub Actions, Docker image tagging/pushing, Windows injector logic, Kubernetes operators, and documentation updates.

September 2025

1 Commits • 1 Features

Sep 1, 2025

September 2025: Implemented Windows Init Containers for .NET applications in the newrelic-agent-init-container project, establishing Windows-based deployment capabilities and cross-platform support. Delivered Windows-specific CI workflows, new Dockerfiles, and build/distribution scripts to enable reliable packaging and distribution of Windows init containers. Core work anchored by the commit 6e2e44db10d1ede5ae4b99e9258734290abf736f (feat: Add Windows init containers for .NET. (#194)).

August 2025

5 Commits • 2 Features

Aug 1, 2025

In August 2025, focused on stability, security tooling, and streamlining repository operations for the newrelic-dotnet-agent. Key features delivered include GPG toolchain modernization for build and deployment; simplification of repository creation by removing an unnecessary checksum option. Major bug fix delivered: refined New Relic instrumentation by excluding the Linux Azure Functions web host process to target function execution. These changes enhance security posture, reduce build/deploy friction, and improve runtime profiling accuracy. The work demonstrates expertise in containerized build pipelines, Linux process filtering, and tooling modernization, delivering measurable business value in faster, safer releases and improved observability.

July 2025

1 Commits • 1 Features

Jul 1, 2025

July 2025 performance summary for repository newrelic/newrelic-dotnet-agent. Delivered Azure Service Bus topics support in addition to existing queues, including refactoring wrappers to differentiate queues and topics, and improvements to entity path processing and destination type recognition. Telemetry reporting for both queues and topics was enhanced to improve monitoring of Azure Service Bus operations, laying the groundwork for better observability and faster issue diagnosis across messaging patterns.

June 2025

1 Commits • 1 Features

Jun 1, 2025

June 2025 monthly summary for the New Relic .NET agent focused on cloud observability enhancements. Delivered Azure App Service detection and reporting in the newrelic-dotnet-agent, introducing a new configuration option and a vendor model to identify Azure App Services and report their resource IDs, thereby improving cloud resource visibility and utilization reporting.

May 2025

2 Commits • 2 Features

May 1, 2025

May 2025 — Delivered two major features for the newrelic-dotnet-agent with reinforced test robustness and Azure Service Bus integration, driving improved reliability, diagnostics, and broader platform capabilities. The work reduces risk in release cycles by stabilizing tests, improving observability, and enabling Azure messaging scenarios.

March 2025

6 Commits • 3 Features

Mar 1, 2025

Monthly summary for 2025-03 focusing on key accomplishments, major bug fixes, and business impact for newrelic/newrelic-dotnet-agent. Delivered observability enhancements and compatibility updates that drive reliability, performance analysis, and developer productivity. Stabilized CI towards more reliable pipelines and prepared the codebase for .NET 9.0 and MongoDB.Driver 3.x+ compatibility.

February 2025

3 Commits • 3 Features

Feb 1, 2025

February 2025 — Key deliverables and impact for newrelic/newrelic-dotnet-agent: - Key features delivered: • License Key Validation and Retrieval Enhancements: robust validation across sources; checks for key length and character validity; improved error reporting for unauthorized connections caused by invalid license keys. Commits: 19e8387a49e01d706691512dea1bb32e8d124b87. • NuGet Version Deprecator: Clear No-Deprecation Output: adds a user-facing message when no packages are deprecated and refactors deprecation detection to clearly report deprecated agent releases. Commits: 31689d67e4c89a3945173a4be0f99c23eb0ac882. • New Relic .NET Agent: PackageReference Support for Azure Web Apps: adds PackageReference support and ensures configuration files are correctly copied/processed for both content and contentFiles, improving Azure Web App installation compatibility. Commits: 8fb397fe4d7b8c11f5939182119ce00097ae0640. - Major bugs fixed: • Hardened license key handling to prevent unauthorized connections by validating keys and improving error messaging; enhanced logging around license key retrieval. - Overall impact and accomplishments: • Improved reliability, user guidance, and installation parity for Azure Web Apps; reduced license-key related failures and user confusion; clearer feedback on deprecations helps customers plan upgrades. - Technologies/skills demonstrated: • .NET agent development, License management, NuGet packaging and deprecation tooling, PackageReference, Azure Web Apps deployment, config processing for content and contentFiles, and enhanced logging and error reporting.

January 2025

1 Commits • 1 Features

Jan 1, 2025

Implemented OpenSearch instrumentation in the newrelic-dotnet-agent to monitor OpenSearchClient interactions, enabling end-to-end observability for OpenSearch-related datastore operations. Delivered project configurations, OpenSearch wrappers, and tests to ensure correct functionality and maintainability. Enabled metrics capture and tracing for OpenSearch interactions, laying groundwork for enterprise-grade visibility and faster issue diagnosis across OpenSearch workloads. Coordinated changes with repository work and aligned with the roadmap for enhanced observability in .NET agents.

November 2024

2 Commits • 2 Features

Nov 1, 2024

Month: 2024-11 — Monthly summary for repository newrelic/newrelic-dotnet-agent focusing on feature delivery, observability improvements, and technical excellence. Key features delivered: • Distributed tracing integration for Azure Functions HTTP triggers: enables end-to-end observability by capturing and propagating tracing headers on HTTP requests to Azure Functions. Includes new helper methods for JSON parsing and changes to function details and HTTP request processing. Commit: 0278836fc9b538f9eceabd47af7b5da46ed13274. • APM log tagging: include labels in forwarded logs: adds capability to include custom APM labels in forwarded application logs with configurable enable/disable and exclusion options to improve filtering, searching, and correlation for troubleshooting and performance analysis. Commit: d1e29eaa5103fede483c7248fed5ace0620c6ccd. Major bugs fixed: • Improved reliability of tracing header propagation across Azure Functions HTTP triggers, addressing intermittent propagation gaps and ensuring consistent trace context across distributed components. Overall impact and accomplishments: • Significantly improved end-to-end observability and troubleshooting capabilities for serverless workflows, enabling faster MTTR and more accurate performance analysis. • Strengthened logging coherence by enabling consistent labeling across logs, aiding correlation between traces and logs across services. • Delivered with low-risk changes, using small, well-scoped commits and clear JSON parsing/logging helpers to minimize runtime overhead. Technologies/skills demonstrated: • Distributed tracing design and implementation, including header propagation and JSON parsing utilities. • Application logging instrumentation and log aggregation improvements (APM labels). • Feature flag/configurability for log tagging. • Strong commit hygiene and traceability for incremental delivery.

Activity

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Quality Metrics

Correctness97.2%
Maintainability93.6%
Architecture93.2%
Performance87.2%
AI Usage20.0%

Skills & Technologies

Programming Languages

BashBatchC#C++DockerfileGoMarkdownPowerShellXMLYAML

Technical Skills

.NET .NET Framework API Development C# Observability SQL Server Unit Testing.NET.NET FrameworkAgent DevelopmentAutomationAzureAzure DeploymentAzure FunctionsAzure Service Bus

Repositories Contributed To

3 repos

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

newrelic/newrelic-dotnet-agent

Nov 2024 Aug 2025
8 Months active

Languages Used

C#XMLYAMLBashC++Dockerfile

Technical Skills

.NET API Development C# ObservabilityAgent DevelopmentAzure Functions

newrelic/newrelic-agent-init-container

Sep 2025 Oct 2025
2 Months active

Languages Used

BatchDockerfileYAMLPowerShell

Technical Skills

CI/CDDockerGitHub ActionsWindows Server

newrelic/k8s-agents-operator

Oct 2025 Oct 2025
1 Month active

Languages Used

GoMarkdown

Technical Skills

Agent DevelopmentGoKubernetesWindows Server

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