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Dan Kortschak

PROFILE

Dan Kortschak

Dan Kortschak engineered robust data ingestion and integration features across the elastic/beats and elastic/integrations repositories, focusing on scalable security analytics and reliable event processing. He developed and optimized ingest pipelines, implemented advanced API integrations, and enhanced system observability using Go and YAML, with deep expertise in Elasticsearch and the Elastic Common Schema. Dan’s work included resilient error handling, dynamic configuration management, and secure authentication flows, addressing edge cases and improving data fidelity. By introducing modular testing frameworks and refining backend logic, he ensured maintainable, upgrade-ready code that supports high-throughput environments, demonstrating strong depth in backend development and distributed systems engineering.

Overall Statistics

Feature vs Bugs

66%Features

Repository Contributions

350Total
Bugs
93
Commits
350
Features
178
Lines of code
139,559
Activity Months19

Work History

April 2026

2 Commits • 1 Features

Apr 1, 2026

April 2026 Monthly Summary for elastic/beats: Implemented robust HTTP input lifecycle and CEL integration, focusing on reliability, data continuity, and developer velocity. Delivered Redirector-based routing for httpjson to CEL, preserved cursor continuity, decoupled shared HTTP server lifecycle, and introduced a mutable mux for dynamic handler management, enabling clean deregistration and deadlock avoidance. These changes unify input configurations, improve server stability, and enable seamless CEL execution paths.

March 2026

14 Commits • 9 Features

Mar 1, 2026

March 2026 performance summary focusing on business value delivered, reliability improvements, and cross-repo technical achievements across elastic/package and Beats. Emphasizes enhanced packaging workflows, Fleet integration, improved resilience for package deletion, and robust data ingestion and security enhancements.

February 2026

16 Commits • 8 Features

Feb 1, 2026

February 2026 monthly performance summary for elastic/integrations, elastic/beats, and elastic/elastic-package. Focused on security, reliability, and data-quality improvements across authentication, API integrations, logging, and upgrade/test workflows. Delivered several high-impact features and stability fixes that drive business value through stronger security posture, improved data ingestion resilience, and streamlined upgrade/testing.

January 2026

4 Commits • 2 Features

Jan 1, 2026

January 2026 monthly summary: Delivered key reliability, security, and resilience improvements across Beats and Integrations. Focused on correcting rate-limiting behavior, hardening API interactions, and tightening sensitive configuration handling to reduce risk and improve operational stability. These work items enhance business value by reducing throttling incidents, improving API reliability under failures, maintaining log shipping during storage version updates, and preventing exposure of API keys.

December 2025

10 Commits • 6 Features

Dec 1, 2025

December 2025 — Across elastic/elastic-package, elastic/integrations, and elastic/beats, delivered key features, fixed critical defects, and improved data reliability, observability, and maintainability. Key features include Script Test Reporting enhancements, agent install commands with registry log inspection, and AWS Bedrock/CloudTrail data handling improvements. Major fixes address ingest pipeline mapping stability, large-number handling, and Falco timestamp correctness. The work delivered measurable business value: reduced debugging time, improved data quality and coverage, and a more maintainable pipeline via code generation. Technologies demonstrated include containerized orchestration concepts, CloudTrail integration, complex ingest pipelines, type flexibility with string number unmarshalling, and robust context cancellation in event publishing.

November 2025

15 Commits • 9 Features

Nov 1, 2025

November 2025: Delivered a set of reliability, configurability, and security improvements across elastic/integrations, elastic/beats, and elastic/elastic-package, with a strong emphasis on scalable data ingestion, robust testing, and secure auth flows. Key features delivered: - Asset host detection: replaced the odd/even query approach with a robust queue consumption model and introduced a parameterized query limit to improve flexibility and throughput (commit 10ca15db170ad624a972284fe07ec5c3b3adc040). - Qualys VMDR integration: added a configurable knowledge base ID query limit to prevent API errors and enable smoother operations (commit 4485d0f25a85c141b9ae49829c6c56027aadb157). - Tenable vulnerability data stream: added a configurable max_executions per interval to balance throughput and reliability (commit e8e17d11ea2c384b042580da858712a639d13879). - Infoblox NIOS: ISO8601 timestamps support for more accurate log parsing and timestamp consistency (commit 9376236f338dd61b61a3816cdc485a5c4a94e757). - FDR documents: support for handling numbers encoded as strings, enabling robust ingestion with string-encoded numeric fields (commit e34d16f8a6bea875de6dffab18c2486f31055f11). - Mito library upgrade: upgraded mito to 1.24.0 to enable timestamp.truncate functionality and improve time handling (commit 89ee3c13b3d5a5af9b74080a045b5ddd48559503). - Data Streams Testing Framework (MVP): introduced a script-based testing package to validate data streams, pipelines, and package upgrades (commit bd294f5349b3b7f54969c34eaed64e648da3e76c). Major bugs fixed: - Gmail integration: fixed handling of Gmail message_info.post_delivery_info.attachment as both nullable scalar and REPEATED array values, with targeted tests (commit 2e464d35544c65239711de17c48b18566f0bba5c). - Akamai: removed placeholder for empty HTTP headers to correctly handle absent header values and added tests (commit c59a7818e5e8a2615b5314f301234fca96a0c6da). - SentinelOne: prevented empty templates from degrading health in activity, alert, and threat data streams (commits 27bc55e14b8001b77cc7d4b8b582eb1988c15cd6 and 6c004e7c35832f78a66a29848f90bb0be35a8dd5). - Tenable Security Center: fixed handling for vulnerability docs without seeAlso (commit 75ecd7b5f6118a64ad1fe77874c24b2bfae35cc8). Overall impact and accomplishments: - Significantly improved data ingestion reliability and throughput through robust queue-based processing and configurable limits, reducing API error risk and enabling smoother operator workflows. - Strengthened security posture with DPoP OAuth support for Okta in Filebeat, enabling proof-of-possession for access tokens. - Established a strong testing foundation with a script-based data streams MVP, enabling faster CI validation for pipelines and upgrades. - Enhanced observability and timestamp accuracy across critical integrations with ISO8601 support and improved logging in key areas. Technologies/skills demonstrated: - Advanced configuration management and parameterization for runtime behavior. - Robust data processing patterns (queue-based consumption) and defensive coding for mixed data shapes (nullable scalars vs arrays). - Security-focused enhancements (DPoP) and secure integration practices. - Test-driven development, feature flag-free incremental delivery, and cross-repo collaboration.

October 2025

8 Commits • 5 Features

Oct 1, 2025

October 2025 summary: Delivered across elastic-package, beats, package-spec, and integrations with a focus on modular tooling, policy automation, and runtime configurability. Features delivered include: internal tooling and test infra enhancements for Elasticsearch ingest pipelines and system test runners; Kibana package policy management enhancements enabling listing and upgrading policies; dynamic rate limit configuration for the Filebeat CEL input with mito v1.23.0 and improved documentation; script-based testing support for data streams in package-spec. Major bug fixed: Citrix WAF data stream manifest titles/descriptions corrected and changelog updated to reflect the new version and align with service names. Overall impact: improved developer productivity, safer upgrade paths, and more flexible testing, accelerating delivery cycles and data quality. Technologies demonstrated: modular refactoring, API surface expansion, test automation, runtime configurability, and cross-repo collaboration.

September 2025

21 Commits • 5 Features

Sep 1, 2025

September 2025 performance summary: Delivered cross-repo features and stability improvements across elastic/integrations, elastic/elastic-package, and elastic/beats, driving reliability, data fidelity, and secure access patterns. Key features delivered include: Splunk Data Stream for search results with APIs for creating and retrieving search jobs and events; CEL input global HTTP headers through a new resource_headers setting enabling authenticated access to side APIs; SailPoint Identity Security Cloud JSON Event Streaming with serialized JSON event delivery and a version bump to 1.2.0; Snyk Integration API parameter handling improved to ingest all issue updates. Major bug fixes and stability improvements included: O365 Integration stability and API handling fixes (cursor handling, time clamping, error propagation); CODEOWNERS sorting to improve maintainability; Jamf Protect alerts data handling improvements preserving tags and original events; M365 Defender parameter formatting improvements for large $skip with cleaner health logs. These changes collectively improve system reliability, data integrity, and developer productivity, reduce operational risk, and enable more robust data pipelines across the platform.

August 2025

28 Commits • 14 Features

Aug 1, 2025

2025-08 Performance Review: Delivered substantial improvements to data ingestion, processing reliability, and security coverage across Elastic Integrations and Beats. Key features and reliability work reduced data loss and operational risk, while enabling deeper visibility for Security and DevOps stakeholders.

July 2025

30 Commits • 14 Features

Jul 1, 2025

July 2025 monthly summary for elastic/integrations and elastic/beats focusing on delivering robust data ingestion, enhanced event classification, and efficiency improvements. Highlights include hardened O365 Audit Logs ingestion, improved CrowdStrike severity mapping, and data-quality enhancements across multiple ingestion pipelines; complemented by ECS alignment and deduplication to boost reliability and interoperability with downstream analytics.

June 2025

25 Commits • 11 Features

Jun 1, 2025

June 2025 focused on robustness, data integrity, and upgrade readiness across elastic/integrations and elastic/beats. Delivered a portfolio of feature enhancements and critical bug fixes that improve data quality, streaming reliability, and analytics capabilities, while ensuring forward compatibility with upcoming platform versions. Highlights include broad Kibana 9.0 compatibility updates, Okta Roles Enrichment, CrowdStrike multi-resource streams, Abnormal Security grace period for data collection, and GCP Pub/Sub input improvements (proxy support and stability fixes). In addition, improvements to status reporting lifecycle in beats reduced noise and improved health visibility, and several data-specific fixes tightened data handling for Cloudflare, SIP/IP processing in O365, and various cursor/index robustness bugs.

May 2025

31 Commits • 14 Features

May 1, 2025

May 2025 monthly summary for Elastic Beats and Integrations: Delivered core features ensuring data quality, observability, and improved security analytics while fixing critical integrity gaps in identity and access workflows. Strengthened fleet health visibility across multiple inputs, and enriched Okta data to boost search and indexing fidelity.

April 2025

18 Commits • 10 Features

Apr 1, 2025

In April 2025, I delivered high-impact features and reliability fixes across elastic/integrations and elastic/beats, focusing on performance, data coverage, observability, and developer experience. Highlights include cross-repo ingestion optimizations, expanded data sources, and improved data quality with robust handling of edge cases and better tracing controls, delivering measurable business value through faster data processing, richer analytics, and reduced troubleshooting time.

March 2025

39 Commits • 23 Features

Mar 1, 2025

March 2025 monthly summary: Across elastic/integrations, elastic/beats, and elastic/elastic-agent, delivered substantive features, reliability fixes, and performance improvements. Highlights include security-focused enhancements to Imperva WAF configurations and URL handling; data architecture upgrade with Entity Analytics Okta splitting user and device streams; expanded CrowdStrike coverage with required threat.intelligence fields, test stabilization, and EppDetectionSummaryEvent support; runtime performance and concurrency refinements in Elastic Agent; and security/data-management hardening in Azure Blob logging and HTTP endpoint body size controls. These contributions improve data integrity, security posture, system observability, and developer experience, delivering measurable business value in faster issue resolution, safer logging, and more scalable data pipelines.

February 2025

23 Commits • 15 Features

Feb 1, 2025

February 2025 performance summary focusing on data fidelity, ingestion reliability, and observability across elastic/integrations and elastic/beats. Delivery prioritized cross-product data quality improvements, robust ingestion pipelines, and better operator visibility. Key features delivered span CrowdStrike, Auth0, Abnormal Security, Imperva Cloud WAF, Prisma Access, Prisma Cloud, Snyk, Jamf Pro, AWS, and Beats components, with targeted bug fixes to stabilize mappings and event classification. The month also included standards updates and documentation enhancements to support maintainability. Key features delivered: - CrowdStrike Integration: inbound/outbound ingest pipelines; maps 'neither' and 'both' directions to 'unknown' in ECS to improve network data accuracy. - Auth0 Integration: preserve original event type identifier via auth0.logs.data.type_id; fixes to event.type/event.category for failed authentication events. - Abnormal Security Integration: include judgementStatus in fingerprint to improve event identification; updates to changelog and manifest. - Imperva Cloud WAF Integration: enhanced API error reporting with detailed messages for API call failures; version updated. - Prisma Access Integration: correct THREAT/indicator classification and DNS handling; improved handling of PanOSDNSResponse/PanOSRecordType arrays. - Prisma Cloud Integration: enhanced text searching in policy fields by mapping description/name/recommendation to text fields for multi-field search. - Snyk Integration: robust handling of empty keys by renaming to no_extension and removing the empty key to ensure stable ingestion. - Jamf Pro Integration: MAC normalization and ECS alignment; version updates and OS version normalization. - AWS Integration: ignore long CloudTrail fields (request_parameters, response_elements) to reduce ingestion errors; version bump. - Sublime Security Documentation: improved file_selectors documentation with regex matching details and interaction with global settings; integration version increment. - SentinelOne / Digital Guardian / Qualys / Symantec / etc.: various reliability and mapping improvements documented in commits. - Beats: HTTP JSON input metrics added to track total events and pages published; CEL input upgraded with mito v1.17.0 for new array functions (sum, front, tail). Major bugs fixed: - M365 Defender: fix message ID handling (#12546) improving mapping accuracy. - Qualys VMDR: tolerate missing version details in asset_host_detection vulnerability results (#12734). - Snyk: prevent empty-keyed fields in snyk.audit_logs.content.notSupported (#12817). - Active Directory provider: fix use-before-initialization bug during full synchronization (#42682). - Additional stability fixes across modules to prevent nil pointer dereferences and improve error handling. Overall impact and accomplishments: - Improved data fidelity across multiple integrations, reducing mis-mapped fields and improving ECS-aligned analytics. - Enhanced operator observability through new metrics and finer-grained error reporting, enabling faster triage and fewer false positives. - Strengthened ingestion reliability with robust handling of edge cases (empty keys, missing version data, long fields), and improved searchability across policy descriptions and names. - Demonstrated end-to-end capabilities in ECS mappings, event fingerprinting, and versioned releases, supporting scalable monitoring and analytics. Technologies/skills demonstrated: - ECS data modeling and mapping, inbound/outbound pipeline design. - Advanced text search and multi-field indexing for policy data. - Robust error reporting and observability instrumentation. - Version management and changelog/manifest updates. - Audio: Not applicable; focus on security data platforms, ingestion pipelines, and CEL upgrade.

January 2025

4 Commits • 1 Features

Jan 1, 2025

Month 2025-01: Focused on stabilizing and expanding integrations in elastic/integrations. Delivered critical bug fixes, feature enhancements, and test coverage to improve reliability, security posture, and developer productivity. Key outcomes include silencing log warnings in O365 integration, enabling fingerprint-based log scanning in GitLab, restoring Imperva Cloud WAF system test coverage, and improving readability of Mimecast CEL templates.

December 2024

31 Commits • 18 Features

Dec 1, 2024

December 2024 monthly summary for two key repositories: elastic/beats and elastic/integrations. The month focused on delivering observable, secure, and scalable data ingestion features, while hardening data quality, logging safety, and integration coverage. The work emphasized business value through reliability improvements, security hardening, and expanded platform support.

November 2024

27 Commits • 12 Features

Nov 1, 2024

November 2024: Strengthened data fidelity and ingestion reliability across Elastic Integrations and Beats by delivering targeted mappings, deduplication safeguards, and extensible data schemas. The month yielded measurable business value through richer security telemetry, reduced duplication, and more robust pipelines that support faster threat detection and compliance reporting.

October 2024

4 Commits • 1 Features

Oct 1, 2024

October 2024 monthly summary for elastic/integrations focusing on reliability and data integrity across security integrations.

Activity

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Quality Metrics

Correctness92.6%
Maintainability89.2%
Architecture88.4%
Performance84.2%
AI Usage21.2%

Skills & Technologies

Programming Languages

AsciidocCELGoGrokGroovyHBSHCLHandlebarsJSONJava

Technical Skills

API DevelopmentAPI IntegrationAPI MappingAPI developmentAPI integrationAPI managementAWSAWS BedrockAWS Bedrock IntegrationAWS IntegrationAWS S3 InputAWS SecurityAWS integrationActive DirectoryActive Directory integration

Repositories Contributed To

5 repos

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

elastic/integrations

Oct 2024 Feb 2026
17 Months active

Languages Used

HandlebarsPainlessYAMLpainlessymlCELJSONJava

Technical Skills

API IntegrationAlertingBug FixBug FixingData IngestionData Integration

elastic/beats

Nov 2024 Apr 2026
17 Months active

Languages Used

GoasciidocAsciidocMarkdownYAMLyaml

Technical Skills

API DevelopmentAPI IntegrationBackend DevelopmentConfiguration ManagementData CollectionDebugging

elastic/elastic-package

Sep 2025 Mar 2026
6 Months active

Languages Used

GoMarkdownYAML

Technical Skills

Backend DevelopmentClean CodeCode RefactoringDocker ComposeGoGo Development

elastic/elastic-agent

Mar 2025 Mar 2025
1 Month active

Languages Used

Go

Technical Skills

CLI DevelopmentCode RefactoringConcurrencyDocumentationGoGo programming

elastic/package-spec

Oct 2025 Oct 2025
1 Month active

Languages Used

YAML

Technical Skills

Package ManagementTesting FrameworksYAML Configuration