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Sandra Sillanpää

PROFILE

Sandra Sillanpää

Sandra Sillanpää contributed to the Slowers-Team/Slowers-App repository by building and refining full stack features focused on data integrity, security, and user experience. She implemented backend persistence using MongoDB and PostgreSQL, integrated Cloudinary for image handling, and enhanced authentication workflows with improved error handling and password security. Sandra upgraded dependencies such as Axios for network reliability, introduced membership management APIs, and delivered frontend UI/UX improvements including internationalization and accessibility. Her work involved TypeScript, Go, and React, with a strong emphasis on test coverage, CI/CD stability, and code maintainability, resulting in a robust foundation for scalable production deployments.

Overall Statistics

Feature vs Bugs

93%Features

Repository Contributions

56Total
Bugs
1
Commits
56
Features
13
Lines of code
6,890
Activity Months4

Work History

April 2025

14 Commits • 5 Features

Apr 1, 2025

April 2025: Delivered reliability, security, and data-integrity improvements across Slowers-App. Key achievements include: (1) Axios upgraded to 1.8.2 after multiple attempts (commits: 95164f0d27bb035ba03be866d38e7ca1187b8219; a043fdd97c7bfb5ac08bc341f70eb8fb097388e4; 6b6689aff0046d200e3032e11fa4ee515e939c23; 6786efc112e62dc4ea431a32ad4a26c5475c15ae). (2) Membership deletion API added with frontend integration; delete button now functional (commits: 567e5e53b2cae3759d130334cb01e876a05aee6e; b63afae310c0234565fafbafe6fc5bf33d0ae032). (3) Prevented users from editing or deleting their own employee records to protect data integrity (commit: 3339a548fd250c6694d0a839c9ad510c42daf3d7). (4) Cloudinary image handling in the backend with a Go refactor to improve readability and maintainability (commits: 192692b2e626c64c945696781d1a101a26b99bc2; ed5db20a371f9eebdadf7e5624aee067ab1fe03f; 848be423a8123b95c7af0f2e723d4e6d7d0f53c3). (5) Frontend UI enhancements for employee deletion, including button styling for clearer user feedback (commits: 89aecc72f08f9a1daf2492ebcf2f5a81a351df9c; 8a34eb593916e7c9387416cce2a8146b40e36bfe).

March 2025

19 Commits • 3 Features

Mar 1, 2025

March 2025 achievements for Slowers-App focused on security hardening, PostgreSQL-backed backend growth, and frontend UI/UX improvements with internationalization. Key security work included mitigating an XSS vulnerability in image previews, upgrading the JWT library, expanding password hashing capacity, and ensuring LastLogin handling. Backend work established groundwork for PostgreSQL-based user, business, and membership management with proper email handling and LastLogin defaults, including new handlers and tests. Frontend enhancements delivered translations, clearer form instructions, validations, and role-based navigation, along with UI fixes and accessibility improvements. These efforts together improved security, data integrity, and global usability, laying a scalable foundation for production workloads.

February 2025

15 Commits • 3 Features

Feb 1, 2025

February 2025 monthly summary for Slowers-App (Slowers-Team). This period focused on delivering reliable user authentication UX, expanding media handling with a thumbnail workflow, and hardening CI/CD processes to reduce deployment risk. Key outcomes include standardized user-facing error messages, a backend image resizing utility with thumbnail endpoints and test coverage, and strengthened security and stability of build/push pipelines with pinned actions and refined permissions. Overall, these efforts improve user onboarding, media performance, and operational reliability, enabling faster time-to-value for users and reducing support overhead.

January 2025

8 Commits • 2 Features

Jan 1, 2025

January 2025 monthly summary for Slowers-App (Slowers-Team). Delivered backend persistence and repo hygiene improvements, plus UX refinements to onboarding flows, with expanded test coverage to reduce risk and support future features. The work emphasizes stability, data integrity, and faster iteration cycles for new capabilities.

Activity

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Quality Metrics

Correctness84.8%
Maintainability86.8%
Architecture77.0%
Performance77.4%
AI Usage21.8%

Skills & Technologies

Programming Languages

CSSGoJSONJSXJavaScriptMarkdownReactSQLShellTypeScript

Technical Skills

API DevelopmentAPI IntegrationAPI TestingAsynchronous ProgrammingAuthenticationBackend DevelopmentCI/CDCSS StylingCloudinary IntegrationCode CleanupCode RefactoringDatabase ManagementDatabase TestingDependency ManagementDevOps

Repositories Contributed To

1 repo

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

Slowers-Team/Slowers-App

Jan 2025 Apr 2025
4 Months active

Languages Used

GoJSXJavaScriptJSONReactShellYAMLMarkdown

Technical Skills

Asynchronous ProgrammingBackend DevelopmentCode CleanupError HandlingForm HandlingFrontend Development

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