Case Study – Batch SMS Marketing Platform for Bradoria

Launch Date: November 2024 Role: Product Owner • Architect • Full‑Stack Developer

The Challenge

Bradoria’s marketers were spending ≈ 2.5 hours every day exporting customer CSVs, uploading them to Heymarket, and sending the same texts—then repeating the process to track performance. The team needed one tool that could:

Segment customers flexibly (e.g. “last‑purchase ≥ $100 & inactive > 60 days”).
Personalise SMS at scale with dynamic fields and coupon images.
Schedule recurring or event‑triggered campaigns.
Track delivery and replies in real‑time.

My Approach

1. n8n Prototype & Rapid Validation

Built end‑to‑end workflow in n8n + Notion within two weeks.
Enabled Bradoria to test filters, message templates and coupon generation before full‑stack development.
Weekly feedback loop shaved weeks off revisions and de‑risked edge‑cases.

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2. Full‑Stack Implementation

React + Node/Express + Supabase/PostgreSQL
Redis queues + WebSockets for real‑time batch progress.
Sharp JS service to embed customer names into coupon images.
Custom API wrapper around Heymarket for send + delivery sync.

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Solution Highlights

Feature	Technology	Outcome
Advanced Filters	Supabase SQL + React Query Builder	Save & reuse audience presets in seconds.
Template Engine	React-MUI editor + Mustache variables	Personalised SMS without manual merge.
Batch & Scheduler	Node worker + Cron UI	Hands‑free sending; Slack & SMS summary after each run.
Coupon Generator	Sharp + Canvas	Auto‑renders branded image per customer.
Live Dashboard	WebSockets	Progress bars & success/fail counts update in real‑time.

Results

~80 hours/month saved on CSV exports alone (≈ 2 full work‑weeks).
95 % faster campaign turnaround—from ~2 days to under 30 minutes.
Projected 15 % lift in repeat‑purchase rate for coupon campaigns.
Team receives automatic Slack/SMS summary reports; zero manual intervention.

“Now our marketers focus on copy, not copy‑pasting spreadsheets.” — Bradoria Marketing Lead

Tech Stack

React • Material‑UI • Node.js (Express) • Supabase/PostgreSQL • Redis • n8n • Heymarket API • Sharp • Docker • AWS

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