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lukazuljevic

PROFILE

Lukazuljevic

Luka Zuljo developed and maintained the dump-hr/ddays-app platform over six months, delivering 51 features and resolving 31 bugs to support event management, authentication, and sponsor workflows. He architected robust backend systems using NestJS and Node.js, integrating Google and Active Directory authentication, and implemented security hardening and automated CI/CD deployments with Terraform and Ansible. Luka enhanced frontend experiences with React and TypeScript, focusing on responsive UI, admin dashboards, and data export capabilities. His work included infrastructure management, error handling, and SEO improvements, resulting in a stable, scalable application that improved onboarding, deployment reliability, and user engagement for conference operations.

Overall Statistics

Feature vs Bugs

62%Features

Repository Contributions

163Total
Bugs
31
Commits
163
Features
51
Lines of code
49,811
Activity Months6

Your Network

11 people

Work History

February 2026

45 Commits • 15 Features

Feb 1, 2026

February 2026 focused on strengthening security, stabilizing deployments, and refining the user experience across dump-hr/ddays-app. Delivered on auth hardening, infra enhancements, CI/CD reliability, frontend/UI polish, SEO, and admin readiness, driving practical business value (security, speed to market, and discoverability).

January 2026

38 Commits • 15 Features

Jan 1, 2026

January 2026 monthly summary for dump-hr/ddays-app: Stabilized deployment workflows, expanded Alloy infrastructure, and advanced security and SEO readiness to accelerate business value. The team restored automated deployments, hardened access controls, and prepared the site for verification and search visibility, while maintaining code quality and reliability.

December 2025

15 Commits • 3 Features

Dec 1, 2025

Month: 2025-12 Overview: Delivered end-to-end event features, reinforced platform stability, and improved user communications and code quality. The work focused on accelerating business value from event modules, enabling exhibitors and attendees to engage more seamlessly, while reducing risk through centralized date management and routing improvements. Key features delivered: - Fly Talks feature: dedicated Fly Talks page, submission modal, improved item layout and status chips, and corrected deadlines/validation for Fly Talks. - Booth Management feature: end-to-end booth management including input/update booth plan, cross-company plan display, equipment management, sponsor booth interactions, and UI improvements. - Swag Bag Deadlines Messaging: added clear deadline messaging on the SwagBagPage to improve user communications. Major bugs fixed and stability work: - Platform stability, routing, and date management improvements: lint cleanups, router organization, centralized date management, and routing behavior toggles to reduce regressions. - General hardening and minor fixes across pages to improve maintainability. Overall impact and accomplishments: - Accelerated feature delivery for event modules, improved exhibitor and attendee workflows, and clearer deadline communications. - Reduced risk with centralized date handling and cleaner routing, simplifying future changes and onboarding. - Demonstrated strong frontend architecture, attention to UI/UX polish, and a focus on code quality. Technologies/skills demonstrated: - Frontend architecture and React/TypeScript patterns - Linting and code quality improvements - Routing, centralized configuration, and date management - UI/UX improvements and cross-team collaboration

November 2025

13 Commits • 3 Features

Nov 1, 2025

November 2025: Delivered impactful improvements in dump-hr/ddays-app, focusing on reliability, observability, and user-facing readiness. Implemented Fly Talk Event Scheduling System using NestJS ScheduleModule with centralized cron constants, enabling robust automated status updates and easier maintenance. Rolled out Prometheus-based monitoring with a dedicated /api/metrics endpoint, expanding visibility into request duration and errors and improving incident response readiness. Updated the Landing Page to reflect new conference dates, ensuring accurate public information. Strengthened error handling across services (SurveyQuestionService and SpeakerService) with more precise exceptions and streamlined imports, reducing confusing error reports. Stabilized CI/build with fixes for API builds and lint errors. These efforts collectively improve business value by reducing downtime, accelerating delivery, and providing actionable observability metrics.

October 2025

25 Commits • 8 Features

Oct 1, 2025

October 2025 monthly summary for dump-hr/ddays-app focused on expanding sponsor lifecycle capabilities, delivering a mobile-friendly UI, and stabilizing the platform for upcoming events. The work bridges frontend UX, backend data modeling, and API surfaces to support sponsor management, contracts, and materials with export readiness.

September 2025

27 Commits • 7 Features

Sep 1, 2025

September 2025 focused on expanding enterprise-ready authentication, strengthening security, and boosting visibility through new dashboards and admin UX. Delivered Google authentication with FedCM-based registration and an isGoogleAuth flag, along with iOS sign-in fixes to improve reliability. Added Active Directory/enterprise login support. Activated automated deployment workflow for the 2025 branch, enabling safer, faster releases. Introduced export-all-pages capability and a new table-based dashboard, complemented by User Management UI and Admin Entities enhancements for better administration. Implemented security hardening by closing unauthorized access to /app, executed DB migrations and a column rename, and improved code quality through linting, dependency updates, and a Node 20 upgrade. These changes collectively increase onboarding speed, security, deployment reliability, governance, and data visibility.

Activity

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Quality Metrics

Correctness92.2%
Maintainability88.6%
Architecture87.0%
Performance86.0%
AI Usage23.2%

Skills & Technologies

Programming Languages

CSSHCLHTMLJSONJavaScriptMarkdownNonePrismaPythonReact

Technical Skills

API DevelopmentAPI IntegrationAPI SecurityAPI developmentAPI integrationAWSAnsibleAuthenticationAuthentication (MSAL)Azure ADAzure AD AuthenticationBackend DevelopmentBackend IntegrationCI/CDCSS

Repositories Contributed To

1 repo

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

dump-hr/ddays-app

Sep 2025 Feb 2026
6 Months active

Languages Used

HTMLJavaScriptPrismaSCSSSQLSVGShellTypeScript

Technical Skills

API DevelopmentAPI IntegrationAuthenticationAuthentication (MSAL)Azure ADAzure AD Authentication