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Can Berk Güder

PROFILE

Can Berk Güder

Over four months, C.B. Guder enhanced data reliability and backend robustness across mozilla/gcp-ingestion, mozilla/bigquery-etl, and mozilla/docker-etl. He delivered a feature to improve Sponsored Suggest reporting by adding country code and device form factor to URLs, ensuring accurate analytics and attribution. Guder addressed schema changes in BigQuery pipelines by updating SQL queries and filtering logic, restoring daily aggregate accuracy. He improved error handling in Java by surfacing clear exceptions for malformed URLs, preventing data corruption. Additionally, he resolved SFTP connectivity issues in Docker-based ETL workflows, upgrading the base image to maintain seamless data transfers and operational stability.

Overall Statistics

Feature vs Bugs

25%Features

Repository Contributions

5Total
Bugs
3
Commits
5
Features
1
Lines of code
170
Activity Months4

Work History

June 2025

1 Commits

Jun 1, 2025

June 2025: Focused on reliability improvements for the docker-etl workflow. Resolved SFTP connectivity issues by upgrading the base image to google/cloud-sdk:slim, ensuring the bq2sftp job can connect to the new SFTP server. This swap minimizes downtime and supports seamless data ingestion into BigQuery.

May 2025

1 Commits • 1 Features

May 1, 2025

May 2025 monthly summary for mozilla/gcp-ingestion: Key feature delivered in Sponsored Suggest Reporting URL Enhancement. Implemented country code and device form factor in reporting URLs, added distinction between legacy and new AMP Suggest API URLs to ensure correct parameter appending, and updated ParseReportingUrl and tests. Commit: 70284fcd9424b15970d97c975df4d123504461a2. No major bugs fixed this month; focus on feature delivery and test coverage. Business impact: improved analytics accuracy and attribution for Sponsored Suggest campaigns across regions and devices, enabling better decision-making and optimization. Technologies/skills demonstrated: URL parameterization, API compatibility handling, parsing logic, test-driven development, and robust regression testing.

January 2025

2 Commits

Jan 1, 2025

January 2025: Stabilized daily aggregates in mozilla/bigquery-etl after upstream schema changes. Delivered a targeted bug fix to adm_daily_aggregates_v1 to transition from the deprecated sanitized_query to the new suggest_impression_sanitized_v3 'query' field and enforce length-based filtering, restoring accurate daily totals and preventing downstream data quality issues. Collaborated with the team to validate changes against the pipeline and upstream changes, ensuring reliability in production.

November 2024

1 Commits

Nov 1, 2024

November 2024 MoGCP Ingestion: Stabilized the reporting pipeline by addressing a duplicate query key issue in reporting URLs. Implemented a robust parsing path that catches IllegalStateException during query parameter parsing and surfaces a clear InvalidUrlException, preventing downstream crashes and data corruption. Added tests to verify the error handling and guard against regressions. This work is tied to commit b353858b3b7c47fe67a4cf353ff7107ed93257b1 (PR #2697).

Activity

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Quality Metrics

Correctness92.0%
Maintainability92.0%
Architecture88.0%
Performance92.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

DockerfileJavaSQL

Technical Skills

Backend DevelopmentData EngineeringDevOpsDockerError HandlingSQLURL Parsing

Repositories Contributed To

3 repos

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

mozilla/gcp-ingestion

Nov 2024 May 2025
2 Months active

Languages Used

Java

Technical Skills

Backend DevelopmentError HandlingURL ParsingData Engineering

mozilla/bigquery-etl

Jan 2025 Jan 2025
1 Month active

Languages Used

SQL

Technical Skills

Data EngineeringSQL

mozilla/docker-etl

Jun 2025 Jun 2025
1 Month active

Languages Used

Dockerfile

Technical Skills

DevOpsDocker

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