Orbitaim

AI-powered B2B marketing and sales outreach: lead prospecting, multi-channel campaigns (cold email, bulk email via SES, LinkedIn, WhatsApp), AI content, analytics, and billing. The product is in production and used by clients. My work is bulk email, billing, WhatsApp, business logic, UI redesign, and production readiness on a codebase that predates me.

What I did

  • Designed and built a bulk-email microservice as sole author (Express, BullMQ, PostgreSQL/Prisma): HMAC-verified, idempotent AWS SES webhook ingestion with Redis pub/sub and Socket.IO streaming live delivery events into the campaign dashboard, plus CI/CD. Used in production by clients.
  • Implemented a sending-reputation tier system (tiers 0–3) with sliding 24-hour send limits and bounce-based circuit breakers to throttle bulk-email dispatch and protect sender reputation.
  • Re-architected subscription billing around a versioned price book and shared pricing engine, snapshotting line items and granted credits on orders and migrating legacy plans to FREE/PRO/CUSTOM.
  • Built credit-metered Meta WhatsApp campaign sending: per-send billing in the BullMQ worker, send-window-aware scheduling, and gateway endpoints with dashboard screens. A shared channel effort with teammates.
  • Redesigned the authenticated product dashboard with shared table and pagination primitives, design-token alignment, and rebuilt home, news, leads, and settings flows.
  • Built a Strapi 5 headless CMS from scratch and integrated typed CMS content across the marketing site and dashboard navigation. Schema work was partly joint.
  • Hardened the cold-email service with resource-ownership authorization middleware and a protected admin queue dashboard, gating releases with unit tests and a Newman API suite in GitHub Actions.