Nurfitra Pujo Santiko
// PORTFOLIO — 04 SELECTED WORKSSORTED BY CHRONOLOGY

Selected Engineering Work

A curated collection of end-to-end products, full-stack applications, internal platforms, and backend systems architected for reliability, low latency, and intuitive user experience.

01 / May 2026 · dir://sentinel-error-monitoringReal-Time Triage · Gemini AI

Sentinel - Error Monitoring

Sentinel is error monitoring that focusing on simplicity, and holistic integration. Track backend services errors, let support raise issue ticket and link them to live service errors and let ai triage the errors

Error MonitoringError TrackingMonitoringTech Support
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02 / Aug 2023 · dir://omni-chat-optimization16× Faster · 3TB → 500GB

Omni-Chat Performance Optimization

Reduced system latency by 1600% and optimized data retention from 3TB to 500GB for a large-scale omnichannel chat application.

Ruby on RailsPostgreSQLRedisElasticsearch
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03 / Jan 2023 · dir://moderator-panel-billingZero-Loss Migration · Idempotent

Moderator Panel Billing & Top-Up

Developed a package top-up feature and automated migration scripts for a moderator panel, improving billing accuracy and operational efficiency.

Ruby on RailsPostgreSQLBilling
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04 / Dec 2021 · dir://interview-scheduler-apiMS Graph Sync · Automated Reminders

Interview Scheduler API

Developed a RESTful API for scheduling interviews, integrating Microsoft Graph API for calendar management.

JavaSpring BootPostgreSQLMicrosoft Graph API
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