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Janusz Marcinkiewicz

PROFILE

Janusz Marcinkiewicz

Worked on enhancing telemetry data quality in the open-telemetry/opentelemetry-go-contrib repository by refining how HTTP status codes are handled within the Go-based OpenTelemetry HTTP instrumentation. Addressed a bug where informational 1xx status codes were being persisted, introducing logic to ignore these codes and record only relevant 2xx–5xx statuses. Developed and integrated automated tests to ensure correct handling of informational codes and to prevent future regressions. Leveraged skills in Go, backend development, and API design to deliver maintainable code with clear commit history. The improvements reduced noise in telemetry dashboards and alerting, resulting in more reliable monitoring for downstream users.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

1Total
Bugs
1
Commits
1
Features
0
Lines of code
64
Activity Months1

Work History

March 2026

1 Commits

Mar 1, 2026

Concise monthly summary for 2026-03 focused on improving telemetry data quality in the OpenTelemetry Go contrib repository by fixing how HTTP status codes are persisted and adding tests to guard against regressions.

Activity

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Quality Metrics

Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

Go

Technical Skills

API developmentGobackend development

Repositories Contributed To

1 repo

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

open-telemetry/opentelemetry-go-contrib

Mar 2026 Mar 2026
1 Month active

Languages Used

Go

Technical Skills

API developmentGobackend development