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André Lima

PROFILE

André Lima

Limwa developed and maintained core features for the NIAEFEUP/uni and NIAEFEUP/enei repositories, focusing on robust authentication, API integration, and deployment reliability. Over 11 months, Limwa delivered user authentication flows, dynamic map rendering, and a reproducible Flutter development environment using Dart, TypeScript, and Nix. Their work included backend improvements such as PostgreSQL integration and migration refactoring, as well as frontend modernization with React and Tailwind CSS. By streamlining CI/CD pipelines, enhancing build reproducibility, and improving code quality through linting and refactoring, Limwa enabled faster onboarding, reduced operational risk, and established a maintainable foundation for future feature delivery.

Overall Statistics

Feature vs Bugs

62%Features

Repository Contributions

287Total
Bugs
63
Commits
287
Features
103
Lines of code
482,609
Activity Months11

Work History

October 2025

7 Commits • 2 Features

Oct 1, 2025

October 2025 performance summary: Key deliverables include Map Display Enhancements in NIAEFEUP/uni to improve map rendering (dynamic centering, LatLngBounds fit, TileLayer URL template, caching) and code cleanup (map.dart imports); Dependency and Dev Environment Upgrades to bolster security and stability (upgrade dependencies, align build tools/SDK versions, fix Android SDK PATH, upgrade emulator); and Cryptography test stability improvements in nixpkgs to reduce flaky CI by disabling memory-leak tests across platforms. Together, these changes improved UI responsiveness, build reliability, and cross-platform stability, accelerating development and reducing time-to-market for updates.

September 2025

7 Commits • 2 Features

Sep 1, 2025

September 2025 monthly summary for NIAEFEUP/uni: Focused on delivering a robust Flutter development environment and targeted code quality enhancements to enable faster development cycles and maintainability. Key outcomes include a Nix-based development environment overhaul with hardware-accelerated Android emulator support (Vulkan), dependency updates, and restructuring of devShell and app definitions; alongside code quality improvements and API cleanup to simplify future work and improve onboarding. These changes drive faster iteration, better emulator performance, and more maintainable code paths for UI features.

July 2025

2 Commits • 1 Features

Jul 1, 2025

July 2025 (NIAEFEUP/uni) focused on strengthening build stability and reproducibility. Implemented reproducible build configurations for Nix and Flutter by updating dependency lock files, and increased the Android Gradle memory limit to 4GB to prevent out-of-memory build failures in CI and local development. These changes reduce flaky builds, accelerate feedback, and improve overall reliability across environments.

June 2025

23 Commits • 18 Features

Jun 1, 2025

June 2025 performance summary focused on stabilizing foundations, modernizing dependencies, and strengthening CI/CD practices to enable faster, more reliable releases across multiple repositories. Key features delivered include targeted platform updates and-wide dependency upgrades, plus code quality and test reliability improvements that reduce friction in future iterations.

May 2025

6 Commits • 2 Features

May 1, 2025

May 2025: Stability, maintainability, and namespace-scoped secret management improvements across two repositories. Delivered targeted bug fix with UI polish, maintenance of dependencies and CI hygiene, and enabling per-namespace secret annotations for MongoDB, enhancing deployment flexibility and reliability.

April 2025

22 Commits • 9 Features

Apr 1, 2025

April 2025 monthly summary focusing on delivering reliable features, robust fixes, and real business value across two repositories (NIAEFEUP/enei and NIAEFEUP/uni). Key features and improvements include dynamic base URL resolution based on incoming requests, admin controls for registrations (is_accepting_registrations) and ability to block event registrations, and user-facing enhancements for event navigation/display. SSR reliability was improved through store page inclusion fixes, backed by migration stabilization. Deployment readiness was enhanced by re-enabling staff migrations, removing ID restrictions, and other migration fixes. UX and developer experience received attention via enhanced home screen drag-and-drop for favorite widgets, seed data updates, and CI/CD/workflow improvements. The combined result is smoother deployments, improved frontend routing, controlled access to registrations, better event UX, and faster iterations.”

March 2025

74 Commits • 15 Features

Mar 1, 2025

March 2025 performance summary for NIAEFEUP/enei focusing on business value, stability, and developer productivity. Delivered key features, stabilized critical flows, and laid groundwork for faster releases through monorepo and tooling enhancements. The work balances customer-facing improvements with robust deployment and security hardening.

February 2025

47 Commits • 15 Features

Feb 1, 2025

February 2025 performance: Implemented production-ready PostgreSQL integration, overhauled migrations and dev/Postgres config for reliable deployments, delivered UI and backend enhancements around tickets and referrals, strengthened observability and deployment hygiene, and completed code quality improvements. This work reduces risk, improves data integrity, and accelerates future feature delivery.

January 2025

54 Commits • 16 Features

Jan 1, 2025

January 2025 (2025-01): Delivered foundational user authentication with login page, login form, and social OAuth, plus an Account model to persist authentication data. Overhauled infrastructure and build tooling, including Tuyau-related downgrades, utils installation, type checking, Dockerfile refactor, env validation, public URL adjustments, and linting, improving deploy reliability and code quality. Fixed critical runtime issues (type-checking errors, hot-reload crashes, countdown formatting with tabular numbers) and hardened environment variable handling. Introduced frontend type-safe data sharing, UI/UX improvements for authentication emails and verification flows, and enhancements to UI components (cards, status pages, calendar year helpers). Strengthened deployment readiness with migrations, fresh-migration support on entrypoint, and CI on develop. These efforts collectively improved security, stability, and developer velocity, enabling faster, safer feature delivery and easier maintenance.

December 2024

41 Commits • 20 Features

Dec 1, 2024

December 2024 highlights across NIAEFEUP/uni and NIAEFEUP/enei: standardizing development with centralized linting and environment tooling, modernizing the frontend stack, and strengthening CI/CD for reliable delivery. Key activities include centralizing lint rules in uni_lint and standardizing dev environments with direnv/Nix flakes, migrating and modernizing the frontend inenei (Vue→React) with Tailwind CSS, and implementing CI linting/typechecking improvements, complemented by documentation updates and a calendar UI bug fix. These efforts deliver faster onboarding, higher code quality, and a scalable UI platform.

November 2024

4 Commits • 3 Features

Nov 1, 2024

November 2024 — NIAEFEUP/uni focused on API quality, developer experience, and risk management. Delivered a standardized Login API endpoint, introduced a reproducible development environment with Nix Flakes, fixed a critical post-install crash, and updated the backup policy to disallow backups. These deliverables improve maintainability, reliability, and operational risk posture while enabling faster onboarding and consistent builds across environments.

Activity

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Quality Metrics

Correctness88.8%
Maintainability89.8%
Architecture85.2%
Performance85.8%
AI Usage20.8%

Skills & Technologies

Programming Languages

CSSDartDockerfileEdgeEnvEnvironment VariablesGitGoGradleHTML

Technical Skills

API DevelopmentAPI IntegrationAdonisJSAndroid DevelopmentAsynchronous ProgrammingAuthenticationBackend DevelopmentBug FixingBuild AutomationBuild ConfigurationBuild ManagementBuild ProcessBuild SystemsBuild Tool ConfigurationBuild Tools

Repositories Contributed To

6 repos

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

NIAEFEUP/enei

Dec 2024 Apr 2025
5 Months active

Languages Used

CSSEdgeEnvironment VariablesHTMLJavaScriptMarkdownNixSVG

Technical Skills

AdonisJSBuild Tool ConfigurationBuild ToolsBuild Tools (Vite)CI/CDCSS

NIAEFEUP/uni

Nov 2024 Oct 2025
8 Months active

Languages Used

DartJavaScriptNixGitShellYAMLGradleJava

Technical Skills

API IntegrationBackend DevelopmentBug FixingDevOpsEnvironment ManagementJavaScript Development

mongodb/mongodb-kubernetes

May 2025 May 2025
1 Month active

Languages Used

GoYAML

Technical Skills

CRD DevelopmentGoKubernetesOperator SDKYAML

Shopify/nixpkgs

Jun 2025 Jun 2025
1 Month active

Languages Used

Nix

Technical Skills

Package ManagementSystem Administration

denoland/deno

Jun 2025 Jun 2025
1 Month active

Languages Used

Rust

Technical Skills

RustSystem ProgrammingTesting

katexochen/nixpkgs

Oct 2025 Oct 2025
1 Month active

Languages Used

Nix

Technical Skills

Build SystemsSystem Packaging

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