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Andy Sellick

PROFILE

Andy Sellick

Andy Sellick delivered robust frontend and publishing improvements across GOV.UK repositories such as alphagov/frontend and govuk_publishing_components, focusing on modular UI architecture, accessibility, and maintainability. He engineered features like interactive maps, unified headers, and service manual topic pages, using technologies including Ruby on Rails, JavaScript, and SCSS. Andy modernized build systems with Dart Sass, refactored asset pipelines, and enhanced data accuracy through GeoJSON integration. His work addressed cross-repo UI consistency, improved analytics and SEO, and streamlined codebases by removing legacy components. These contributions enabled faster iteration, reduced maintenance overhead, and improved the reliability and accessibility of GOV.UK services.

Overall Statistics

Feature vs Bugs

70%Features

Repository Contributions

417Total
Bugs
58
Commits
417
Features
137
Lines of code
129,596
Activity Months12

Work History

October 2025

23 Commits • 6 Features

Oct 1, 2025

October 2025: Delivered governance, frontend, and publishing improvements across multiple GOV.UK services, aligning ownership, enhancing modularity, and tightening asset handling. Fixed critical rendering issues on missions and landing pages, added iOS banner support, and introduced a withdrawn publication reference for publishing-api. Strengthened testing coverage and maintainability through module-oriented refactors and explicit asset management, delivering clear business value and faster iteration cycles.

September 2025

55 Commits • 14 Features

Sep 1, 2025

September 2025 performance summary: Delivered cross-repo UI consistency improvements and stability enhancements that improve user experience and engineering velocity. Implemented a unified header system across content types, refined translation header alignment for RTL/LTR support, upgraded key dependencies (Lux 4.x and govuk_publishing_components 61.x), and extended the HTML publication schema with nested headers. Completed targeted CSS/UI refinements and repository maintenance to reduce noise and improve maintainability. These changes collectively enhance content structure, accessibility, and release reliability while enabling faster, safer iterations.

August 2025

33 Commits • 13 Features

Aug 1, 2025

August 2025 performance summary: Delivered UX improvements, data accuracy enhancements, and build-system modernization across GOV.UK frontend repositories. Highlights include metadata component fixes and documentation; Govspeak footnotes UX enhancement; Sass modernization (build system, module syntax, and deprecation noise reduction); unified translation/navigation styling across multiple content views; and data quality improvements for CDC geoJSON and hub maps. The work reduced build noise, improved data quality, and established a more maintainable front-end codebase. Technologies demonstrated include Dart Sass, modern Sass module syntax, CSS3 mixins, Govspeak, microformats documentation, and flexbox-based layouts with GeoJSON data handling. These efforts contributed to a more reliable authoring experience, clearer user navigation, and more trustworthy content presentation.

July 2025

26 Commits • 8 Features

Jul 1, 2025

July 2025 performance summary focusing on delivering user-facing features, stabilizing testing, and improving maintainability across four repositories (govuk_publishing_components, frontend, feedback, government-frontend). Key work included SPNB skip_account handling enhancements and API alignment, accessibility test stabilization, service manual topic page improvements, GA4 scroll tracking, and ongoing codebase modernization.

June 2025

26 Commits • 4 Features

Jun 1, 2025

June 2025 performance snapshot across alphagov repositories. Key feature deliveries include: (1) Service Manual Topic Pages with accordion and accessibility scaffolding in frontend, enabling structured topic content with breadcrumbs, flexible accordion/list rendering, and improved navigation for assistive tech; (2) Map UX and Accessibility Improvements with refactored interaction tracking, enhanced filtering, skip links, focus behavior, keyboard handling, and Escape-to-close for popups, plus a fix for ICS region data mapping to improve map accuracy; (3) Enhanced Select Component with the ability to disable individual options and ARIA-controls for accessibility; (4) Code cleanup and UI consistency improvements in collections to boost performance and maintainability; (5) maintenance and release-note hygiene across components to reduce auditing noise.

May 2025

18 Commits • 5 Features

May 1, 2025

May 2025 performance summary for alphagov/feedback and alphagov/frontend focused on reliability, accessibility, branding consistency, and performance improvements across the user journey. Deliverables spanned major feature work, user-facing improvements, and infrastructure-supporting changes with clear business impact.

April 2025

13 Commits • 3 Features

Apr 1, 2025

Concise monthly summary for 2025-04 focusing on delivered features, fixes, and improvements across three repositories, highlighting business value and technical achievements.

March 2025

38 Commits • 5 Features

Mar 1, 2025

Month: 2025-03 — Across the Alphagov repositories, delivered features and fixes that improve content presentation, navigation, accessibility, and developer efficiency. Key outcomes include standardized attachment spacing and mobile thumbnail sizing, scaffolding for the Service Manual homepage in frontend with routes/controllers, content model, UI refinements, and SEO improvements, removal of the Service Manual Homepage from government-frontend to reduce maintenance, Govspeak styling improvements, and refactored breadcrumbs. Strengthened test reliability and maintenance through internal maintenance work and test updates. These changes reduce long-term maintenance burden, enable faster feature delivery, and improve user experience across Gov.uk content.

February 2025

36 Commits • 19 Features

Feb 1, 2025

February 2025 performance highlights across four key repos (govuk-developer-docs, finder-frontend, govuk_publishing_components, government-frontend). Focused on delivering mobile-friendly UI, consistent typography and component styling, and semantic correctness, with a strong emphasis on maintainability and business value.

January 2025

96 Commits • 43 Features

Jan 1, 2025

January 2025 performance summary across GOV.UK publishing components and related repos focused on stability, accessibility, and maintainability. Delivered a formal release, removed legacy components, standardized heading and wrapper patterns, and migrated UI concerns to a modular approach to reduce maintenance toil. Key dependency upgrades and documentation improvements also supported faster release cycles and clearer guidance for teams consuming the components.

December 2024

27 Commits • 11 Features

Dec 1, 2024

December 2024 performance highlights: delivered UI consistency, accessibility, and maintainability improvements across multiple repos. Key outcomes include centralized spacing with the ComponentWrapperHelper (margin_bottom) across components; heading and typography modernization (replacing title with heading, adding a context option, and standardizing mobile heading margins); accessibility enhancements for Published Dates and banners; documentation upgrades for two-column layout and Frontend Component Guide configuration; and ongoing code quality efforts (refactors, version bumps, Sass/CSS cleanup) that reduce visual drift, improve localization readiness, and stabilize builds for future delivery.

November 2024

26 Commits • 6 Features

Nov 1, 2024

November 2024: Delivered a cohesive frontend improvement sprint across alphagov/frontend, alphagov/govuk_publishing_components, and alphagov/government-frontend. Key outcomes include a visual refresh of the landing page and cards, enhanced data visualization with flexible chart axes and chart types, layout refactors for progress and content pages, improved cookie-consent UX for embedded media, and solid release/versioning hygiene. The work reinforces business value by increasing engagement, clarity of analytics, maintainability of the component library, and reliability of release notes.

Activity

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Quality Metrics

Correctness93.6%
Maintainability94.0%
Architecture89.6%
Performance91.8%
AI Usage20.0%

Skills & Technologies

Programming Languages

CSSERBGitHTMLHTML ERBJSONNetJavaScriptJsonnetMarkdownRuby

Technical Skills

API DevelopmentAPI IntegrationAccessibilityAnalyticsAsset ManagementAttribute HandlingAuditingBEMBackend DevelopmentBrowser APIsBuild ConfigurationBuild ToolsCSSCSS PreprocessingCode Cleanup

Repositories Contributed To

18 repos

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

alphagov/govuk_publishing_components

Nov 2024 Oct 2025
11 Months active

Languages Used

CSSERBHTMLJavaScriptMarkdownRubySCSSYAML

Technical Skills

CSSComponent DevelopmentData VisualizationDocumentationFront End DevelopmentFront-end Development

alphagov/frontend

Nov 2024 Oct 2025
11 Months active

Languages Used

HTMLRubySCSSYAMLERBMarkdownJavaScripterb

Technical Skills

CSSFront End DevelopmentFront-end DevelopmentFrontend DevelopmentHTMLResponsive Design

alphagov/government-frontend

Nov 2024 Sep 2025
9 Months active

Languages Used

SCSSERBHTMLHTML ERBRubyYAMLMarkdownerb

Technical Skills

CSSFront End DevelopmentResponsive DesignComponent DevelopmentFront-end DevelopmentFrontend Development

alphagov/collections

Dec 2024 Oct 2025
7 Months active

Languages Used

SCSSHTMLHTML ERBJavaScriptRubyERB

Technical Skills

CSSFront End DevelopmentSassDependency ManagementFront-end DevelopmentFrontend Development

alphagov/finder-frontend

Dec 2024 Sep 2025
6 Months active

Languages Used

ERBHTMLRubyYAMLerbJavaScriptSCSSSass

Technical Skills

Code RefactoringComponent DevelopmentFront End DevelopmentFrontend DevelopmentCSSDependency Management

alphagov/feedback

Dec 2024 Aug 2025
4 Months active

Languages Used

ERBHTMLJavaScriptRubySCSSSass

Technical Skills

Front-end DevelopmentUI ComponentsFront End DevelopmentFrontend DevelopmentGem IntegrationHTML

alphagov/publisher

Jan 2025 Jan 2025
1 Month active

Languages Used

ERBHTMLRubySCSS

Technical Skills

CSSDependency ManagementFront End DevelopmentFront-end DevelopmentFrontend DevelopmentIntegration Testing

alphagov/publishing-api

Sep 2025 Oct 2025
2 Months active

Languages Used

JSONNetJsonnetRubyHTML

Technical Skills

API DevelopmentDevOpsRuby on RailsSchema DefinitionSchema DevelopmentSchema Management

alphagov/smart-answers

Jan 2025 Aug 2025
2 Months active

Languages Used

RubySCSSSass

Technical Skills

CSSFront End DevelopmentFront-end DevelopmentIntegration TestingSassBuild Tools

alphagov/govuk-developer-docs

Jan 2025 Oct 2025
3 Months active

Languages Used

ERBHTMLHTML ERBYAMLCSS

Technical Skills

Content ManagementDocumentationSEOCSSFront End DevelopmentHTML

alphagov/manuals-publisher

Jan 2025 Jan 2025
1 Month active

Languages Used

ERBHTMLRubySCSS

Technical Skills

Code RefactoringDependency ManagementFront-end DevelopmentFrontend DevelopmentRuby on RailsUI Components

alphagov/static

Jan 2025 Sep 2025
2 Months active

Languages Used

HTMLJavaScriptRubySCSSYAML

Technical Skills

Asset ManagementBackend DevelopmentCode RefactoringFront End DevelopmentFrontend DevelopmentJavaScript Testing

alphagov/transition

Jan 2025 Jan 2025
1 Month active

Languages Used

ERBHTMLRuby

Technical Skills

Dependency ManagementERB TemplatingFront-end DevelopmentHTMLRuby on Rails

alphagov/collections-publisher

Jan 2025 Jan 2025
1 Month active

Languages Used

Rubyerbruby

Technical Skills

Dependency ManagementFront End DevelopmentRuby on Rails

alphagov/travel-advice-publisher

Jan 2025 Jan 2025
1 Month active

Languages Used

ERBHTMLRuby

Technical Skills

Dependency ManagementFront End DevelopmentRuby on Rails

alphagov/specialist-publisher

Jan 2025 Jan 2025
1 Month active

Languages Used

ERBSCSS

Technical Skills

ERBFront End DevelopmentSCSSUI Components

alphagov/govuk-e2e-tests

Mar 2025 Mar 2025
1 Month active

Languages Used

JavaScript

Technical Skills

End-to-end testingFrontend Development

alphagov/email-alert-frontend

Aug 2025 Aug 2025
1 Month active

Languages Used

RubySass

Technical Skills

Build ToolsFrontend Development

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