WhatsApp API Developer
Hire a WhatsApp Business API developer
Official WhatsApp Business Cloud API via a Meta-approved BSP. Not Baileys, not Evolution, not a QR-scanning wrapper that gets the client's number banned in a week. The integration that survives contact with a real business.
The part most people get wrong
Unofficial WhatsApp libraries demo beautifully and die in production. Meta detects automation on personal-API numbers and bans them, usually within days of real volume. The client loses the number their customers have saved for years. That is not a technical setback, it is a business amputation.
What you get
- →WhatsApp Business Cloud API official, provisioned through a Meta-approved BSP (Gupshup, 360dialog, Wati or Twilio).
- →Meta Business Manager verification handled end to end — the 2-3 day review process, document submission, and display-name approval.
- →Message template design and submission that passes Meta review the first time.
- →Automated reminders, confirmations and follow-ups that read like the business wrote them, not like a bot.
- →AI assistant on the channel with Claude, RAG-grounded so it cannot invent prices.
- →Multi-agent inbox so a team shares one number with assignment, internal notes and full history.
- →Voice-note handling via Whisper transcription into the same pipeline.
- →Webhook reliability — signature verification, idempotency, retry handling, dead-letter queue.
Proof — shipped and in production
Servifibras CRM + AI
A composites shop was renting an AI assistant. Their own Claude-powered agent now handles sales across 5 channels, with hard guards against price hallucination.
Famacon Livestock Monitor (M2)
Cattle fields were checked on foot at dawn. Sensor telemetry over MQTT/HTTP fires WhatsApp alerts when a threshold breaks, before anyone leaves the house.
Agendux
No-shows are the quiet cost of every appointment business. Reminders reach clients on WhatsApp, and a cancelled slot gets offered again.
Virtual Commercial Assistant SaaS
SMBs (delivery, barbershops, clinics, retail) needed a WhatsApp assistant with STT and per-client JSON config. MVP built for stability over intelligence.
Frequently asked
Can you use Baileys or Evolution to save on Meta fees?+
No, and you should not want to. Both violate WhatsApp's terms and get real business numbers banned once volume arrives. Meta charges per conversation on the official API, which is cheaper than any third-party BSP markup and does not risk the number your customers already have saved.
How long does Meta Business verification take?+
Typically 2-3 business days once the documents are submitted correctly. The delays come from mismatched business names, unreadable document scans, or a display name that violates Meta's naming policy. I handle the submission so it passes the first time.
What does it cost to run?+
Meta bills per 24-hour conversation window, priced by country and category (marketing, utility, authentication, service). Utility and service conversations are substantially cheaper than marketing. Exact numbers depend on your volume and market — I model it before you commit.
This role is also called
- whatsapp integration specialist
- whatsapp bot developer
- messaging API developer
- conversational commerce developer
Start with a written brief
Describe what the business is losing today and what the target outcome looks like. I come back with a concrete plan against that document — in English, Spanish, Portuguese or Polish.
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