Elviencode – Software Engineer Portfolio
Elvien
Software Engineer & System Builder
Passionate developer building modern web applications with a focus on user experience and clean code.
Featured Projects
MagangHub Bot Attendance
MagangHub Bot Attendance & Automated Daily Reporting Platform is an enterprise-grade multi-user workflow automation and attendance management system engineered for Indonesian Ministry of Manpower (Kemnaker) MagangHub interns. The platform completely automates daily check-in, check-out, and formal tri-part internship activity reporting (Uraian, Pembelajaran, Kendala) via intelligent proxy routing and background cron daemon execution.Architectural OverviewBuilt with Next.js 16 App Router following the Simple Scalable Architecture, the application leverages NextAuth (Auth.js v5) with OAuth and Personal Access Token (PAT) authentication, serverless PostgreSQL (Neon) via Prisma ORM, and Tailwind CSS mobile-first responsive interfaces complying with strict touch target and anti-zoom ergonomics.Key Capabilities & Features• Cloudflare WAF Forward Proxy Bypass: Transparent HTTP CONNECT forward proxy architecture routing outbound requests through dedicated VPS infrastructure to seamlessly bypass Kemnaker SSO datacenter IP blocks.• AI-Driven Multi-Source Daily Reporting: Real-time synchronization of developer commits via GitHub REST API and public Atom feed fallback, generating structured, context-rich daily logs compliant with Kemnaker standards.• Automated Cron Daemon Execution: Robust serverless cron trigger architecture integrated with VPS Crontab and Asia/Jakarta (WIB) timezone alignment for scheduled automated submission and notification dispatch.• Mobile-First Responsive Experience: Touch-optimized stacked card views, modal activity inspectors, and protected report locking preventing accidental edits to submitted filings.
Google Review Card Generator
Google Review Card Generator & Physical QR Platform is an end-to-end web engineering solution and print-ready card design system built to bridge offline customer foot traffic with Google Maps business profiles. Engineered for both on-demand custom card generation and mass retail pre-printing, the platform produces millimeter-precise, 300+ DPI physical cards (PVC CR80 cards, A6/A7 acrylic table standees, and cashier counter stickers) with high-fidelity vector PDF and PNG export. Architectural Overview Developed with Next.js 15 App Router and TypeScript, the system adopts Vercel Geist design principles paired with official Google visual identity tokens. The dynamic QR lifecycle is powered by Prisma ORM and serverless PostgreSQL (Neon), executing sub-50ms HTTP 307 proxy redirects (/r/[id]), self-activation onboarding flows, salted SHA-256 PIN verification via native Node.js crypto, and asynchronous scan telemetry logging. Key Capabilities & Features • Millimeter-Accurate WYSIWYG Print Engine: Client-side vector rendering via jsPDF and html-to-image featuring dynamic ResizeObserver auto-scaling, bleed marks, and strict quiet zones for zero-distortion physical printing. • Dual Production Workflows: Seamlessly toggles between direct branded cards and universal unbranded stock cards ready for retail pre-printing and distribution. • Dynamic Proxy & Self-Activation Portal: Unactivated cards guide merchants through a mobile-first onboarding flow (/r/[id]/activate) with Google Maps link resolution and PIN-protected destination URL updates. • Official Typography & Identity Harmony: Authentic Google Sans and Google Sans Text font stack, NFC wave indicators, and verified gold star rating assets.
Hospital E-Klaim & Health Insurance Integration
Enterprise hospital claim processing system bridging clinical hospital management (SIMRS) with Ministry of Health (Kemenkes) and BPJS Kesehatan web services. Streamlines patient visit reconciliation, automated grouping, hospital tariff calculations, and secure AES-256 payload encryption.### Architectural OverviewBuilt with React 19, TypeScript, and Express.js backed by Microsoft SQL Server (SIMRS DB) and high-performance REST APIs. Implements resilient payload encryption and audit-logged claim lifecycles adhering to national healthcare integration specifications.### Key Capabilities & Features- **SIMRS & BPJS Bridge:** Bi-directional synchronization connecting local electronic medical records with national health insurance claim web services.- **Automated Claim Grouping:** High-speed grouping pipeline for patient diagnoses, procedures, and tariff tier evaluations.- **AES-256 Security Architecture:** Bank-grade payload encryption ensuring strict patient data confidentiality during external transmissions.- **Audit & Reconciliation:** Comprehensive transaction logs and discrepancy alerts for hospital billing reconciliation.
Tech Stack
Ready to build high-impact software?
I am available for full-stack engineering contracts, web architecture consulting, and production systems development.