FAZLEY RABBI
← Work

AI / Analytics Engine · Apr 2026 – May 2026

SignalStack

Next-Gen AI Intelligence Terminal for real-time geopolitical and tech feed distillation.

ROLE · Solo Developer Ongoing
Live site Repository View in Stack

The Problem

Global geopolitical and tech news cycles move too fast for manual monitoring, creating a massive noise-to-signal ratio.

The Approach

A high-density analytical terminal that distills vast world-event feeds into real-time summaries and severity scores via multi-provider AI failover.

Highlights

  • Reduced AI inference costs to near-zero with a multi-tier local pipeline (Mac M1 LlamaCPP → VPS local → Groq → OpenRouter) and automatic fallback chaining.
  • Automated content distribution via SignalStack Pulse — Twitter/X, Facebook, LinkedIn OAuth, platform-aware content transformer, and rate limiting (2 posts/day cap on X).
  • Solved geolocation-based company discovery with Company Radar — OSM/Overpass, Mapbox, Google Places, e-CAB, and GitHub tech sources with smart career page detection.
  • Made the platform accessible in Bengali via a Redis-backed translation priority queue with dual-tier quality threshold.
  • Centralised job market intelligence by aggregating remote sources into a unified feed with Discord alerts, dedup, and global remote filter.
Scope of work (12)
  • RSS feed aggregation with dedup, min-score filter, 30-day retention, auto-requeue on startup.
  • Tiered scoring engine with noise reduction and geopolitical coverage.
  • Bengali font (Hind Siliguri) and next-intl i18n routing.
  • Directory Crawler with site-specific extractors (bdjobs, remotive) and bank filter.
  • Job Signal Extension: remote feeds, Discord alerts, dedup, global remote filter.
  • Admin dashboard: sortable/resizable columns, bulk select, Discord webhook UI, API key manager, drag-and-drop AI pipeline editor.
  • Geo heatmap with TopoJSON world map + ZoomableGroup, country filter from query params.
  • Trends analytics endpoint; /trends page migrated to Tremor.
  • Bookmarks system and daily email digest (tech-only).
  • Self-hosted IP enrichment (MaxMind) and passive bot detection; JWT HS256 + admin auth guards.
  • Searchable log viewer with 30-day retention and day-range filter.
  • 35 DirectoryCrawlerService unit tests; Scorer/Admin/Auth service tests; CI/CD workflow; Docker resource limits.

Stack

  • Node.js
  • NestJS
  • Groq
  • OpenRouter
  • Redis
  • Real-time AI

Architecture

System diagram

[CONTENT REQUIRED] Architecture diagram (B3)

Media

[CONTENT REQUIRED] Screenshots / demo video (B2)

Lessons learned