Sean Marciniak
Senior Staff Software Engineer at Cisco
Oregon, Australia
Summary
🤩
Rockstar🎓
Top SchoolSean Marciniak is a Software Engineer based in Oregon with eight years of experience focused on cloud-native observability and backend systems. A principal-level contributor to the high-profile OpenTelemetry Collector and its contrib repository, he has strengthened error handling, concurrency safety, and feature gating in the collector while extending the AWS Kinesis exporter to support dynamic encodings (including Jaeger) and resilient S3-backed delivery. He combines pragmatic Go engineering with a strong emphasis on data integrity and production readiness for telemetry pipelines. Sean’s work reveals a pattern of making distributed systems more reliable and flexible while simplifying integrations with AWS services.
8 years of coding experience
10 years of employment as a software developer
University of Adelaide
Github Skills (12)
aws-s310
opentelemetry10
error-handling10
go10
concurrency9
testing9
kin9
amazon-kinesis9
observability8
metric8
telemetry8
gzip7
Programming languages (10)
Github contributions (5)
open-telemetry/opentelemetry-collector-contrib
Jun 2021 - Jan 2023
Contrib repository for the OpenTelemetry Collector
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1154 reviews, 45 commits, 272 PRs in 1 year 7 months
Contributions summary:Sean's contributions primarily involved refactoring and extending the AWS Kinesis exporter within the OpenTelemetry Collector Contrib repository. They added support for dynamic encoding types, including the Jaeger format, to enable the export of various data types like traces, metrics, and logs. Furthermore, the user implemented improvements to ensure data loss protection when writing the telemetry data to AWS S3 storage. These changes demonstrate a focus on enhancing data handling, integration with AWS services, and performance.
contribopentelemetry-collectortracingtempoobservability
open-telemetry/opentelemetry-collector
Sep 2021 - Jan 2023
OpenTelemetry Collector
Role in this project:Back-end Developer
Back-end DeveloperContributions:116 reviews, 13 commits, 27 PRs in 1 year 4 months
Contributions summary:Sean primarily focused on improving the usability of error handling within the OpenTelemetry collector, specifically concerning combined errors, with changes to support Go 1.13+. They also made access atomic to the collector's level for concurrent testing and updated methods to reflect the contribution guide's recommendations. Furthermore, the user made updates to feature gates.
opentelemetry-collectortracingtempoobservabilitytelemetry
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