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Erik Sundell

PROFILE

Erik Sundell

Over a three-month period, contributed to infrastructure and data platform improvements across the 2i2c-org/infrastructure and electricitymaps/electricitymaps-contrib repositories. Delivered AWS cost attribution and EKS cluster management enhancements using Terraform and Kubernetes, focusing on automation, governance, and cost visibility. Modernized data parsers by standardizing date and time handling with Python’s datetime and zoneinfo, expanded regional electricity data coverage, and improved dashboard reliability. Enhanced privacy in configuration management, streamlined mock data generation, and fortified testing with Pytest and syrupy. The work emphasized maintainability, data accuracy, and cross-team collaboration, reducing operational risk and supporting scalable, privacy-conscious cloud and data workflows.

Overall Statistics

Feature vs Bugs

73%Features

Repository Contributions

30Total
Bugs
4
Commits
30
Features
11
Lines of code
194,855
Activity Months3

Work History

January 2025

14 Commits • 5 Features

Jan 1, 2025

January 2025 focused on parser modernization, regional coverage expansion, and a fortified testing baseline in electricitymaps-contrib. The work standardized date/time handling across parsers, expanded coverage to BD-NP and MN coal data, added ES-IB-ME capacity configuration, and improved data reliability through SV/Kuwait fixes and a revamped tests framework. These changes reduce maintenance overhead, improve data accuracy, and accelerate future enhancements for diverse regions and data sources.

December 2024

6 Commits • 3 Features

Dec 1, 2024

December 2024 monthly summary focused on privacy-conscious configuration cleanups, data tooling refinements, and parser modernization across three repositories. Key outcomes include removal of departed contributors' references, privacy-preserving workflow updates, simplified mock data generation, robust null-handling for net-exchanges, and modernization of time-handling code using built-in Python facilities. These changes reduce misattribution risk, streamline data generation, improve reliability of production dashboards, and demonstrate solid cross-team collaboration and code quality.

November 2024

10 Commits • 3 Features

Nov 1, 2024

November 2024: Delivered cost attribution enablement across five AWS clusters, migrated EKS configurations to managed addons with tagging and a default EBS CSI storage class, and completed infrastructure cleanup/decommission to reduce sprawl and risk. Documentation and Terraform/variable updates accompany feature work, reinforcing governance, automation, and cost visibility.

Activity

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Quality Metrics

Correctness92.4%
Maintainability91.8%
Architecture89.4%
Performance86.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

HCLHTMLJavaScriptJsonnetMarkdownPythonTypeScriptYAMLjsonnetterraform

Technical Skills

API IntegrationAWSAWS EKSCloud InfrastructureConfiguration ManagementDashboard DevelopmentData ParsingData VisualizationDate and Time HandlingDecorator PatternDependency ManagementDevOpsDocumentationFrontend DevelopmentHelm

Repositories Contributed To

3 repos

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

electricitymaps/electricitymaps-contrib

Dec 2024 Jan 2025
2 Months active

Languages Used

JavaScriptPythonTypeScriptHTMLYAMLyaml

Technical Skills

API IntegrationData ParsingFrontend DevelopmentJavaScriptMockingNode.js

2i2c-org/infrastructure

Nov 2024 Dec 2024
2 Months active

Languages Used

HCLJsonnetMarkdownjsonnetterraformyaml

Technical Skills

AWSAWS EKSCloud InfrastructureConfiguration ManagementDocumentationHelm

2i2c-org/team-compass

Dec 2024 Dec 2024
1 Month active

Languages Used

Markdown

Technical Skills

Documentation