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Stuart McHattie

PROFILE

Stuart Mchattie

Over four months, Sam worked extensively on the sanger/limber and sanger/sequencescape repositories, delivering 52 features and resolving 32 bugs. He modernized core APIs, migrating legacy endpoints to V2 and refactoring data models for labware, plates, and QCables to improve data integrity and maintainability. Using Ruby, Ruby on Rails, and SQL, Sam enhanced backend compatibility, optimized test infrastructure with RSpec, and improved code quality through systematic cleanup and documentation. His approach emphasized test-driven development, robust error handling, and performance optimization, resulting in more reliable releases, scalable API integrations, and streamlined onboarding for downstream teams relying on these critical systems.

Overall Statistics

Feature vs Bugs

62%Features

Repository Contributions

165Total
Bugs
32
Commits
165
Features
52
Lines of code
9,215
Activity Months4

Work History

January 2025

9 Commits • 5 Features

Jan 1, 2025

January 2025: Delivered incremental improvements across sequencescape and limber, focusing on test reliability, API usability, and maintainability. Key features include new filters and V2 API migrations, plus cleanup of legacy code, with measurable business value in faster iteration, improved data discovery, and reduced maintenance burden.

December 2024

43 Commits • 15 Features

Dec 1, 2024

December 2024 performance highlights across sanger/sequencescape and sanger/limber. Delivered core features, stability improvements, and quality enhancements with strong business value. Key outcomes include refactoring TagLayoutProcessor to a callback-based design for easier extension and maintenance; enabling and testing OrderResource functionality with template attribute cleanup; migrating Submissions API to API v2 with core tests and removal of v1 patterns; migrating Qcable-related resources to the V2 API and updating data models; barcode and data integrity improvements for QCables; stock plate retrieval optimization by including ancestors and reducing API calls; broad code quality improvements with RuboCop hygiene, deprecation cleanups, and release housekeeping; and explicit release readiness through version bumps (14.52.0 for Sequencescape and 3.66.0 for Limber).

November 2024

108 Commits • 30 Features

Nov 1, 2024

November 2024 monthly summary focusing on delivering API migrations, stabilization of the test suite, and strategic labware/plate improvements across Limber and Sequencescape. The work prioritized business value through robust data models, reliable test feedback, and scalable API infrastructure for downstream product teams.

October 2024

5 Commits • 2 Features

Oct 1, 2024

Month 2024-10 summary highlighting API modernization, data integrity, and test infrastructure improvements across two core repos. Limber: migrated to the V2 Tube Query API, replacing V1 calls in WorkCompletionsController and LabwareCreators, aligning with updated backend services. Fixed data integrity by preserving nil barcode values in LabwareBarcodeCaster (nil remains nil, not converted to an empty string). Sequencescape: enhanced test infrastructure and code quality by refactoring API v2 tube tests to a generic resource-based approach for better maintainability; corrected a documentation typo in labware.rb; fixed a matcher name typo in TubeResource specs to improve reliability. Overall, these changes improved backend compatibility, data integrity, and test reliability while showcasing API migration, Rails modeling, and test-driven enhancements.

Activity

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Quality Metrics

Correctness89.8%
Maintainability90.2%
Architecture86.0%
Performance82.4%
AI Usage20.0%

Skills & Technologies

Programming Languages

HTMLHTML ERBJavaScriptRubySQL

Technical Skills

API DesignAPI DevelopmentAPI DocumentationAPI IntegrationAPI Integration TestingAPI ManagementAPI StubbingAPI TestingAPI VersioningBackend DevelopmentCode CleanupCode DocumentationCode MaintenanceCode QualityCode Refactoring

Repositories Contributed To

2 repos

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

sanger/limber

Oct 2024 Jan 2025
4 Months active

Languages Used

RubyHTML ERBJavaScriptHTMLSQL

Technical Skills

API IntegrationBackend DevelopmentAPI DesignAPI DevelopmentAPI Integration TestingAPI Stubbing

sanger/sequencescape

Oct 2024 Jan 2025
4 Months active

Languages Used

RubyJavaScriptSQL

Technical Skills

API TestingCode RefactoringRSpecRuby on RailsTestingAPI Development

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