Über
The software will allow businesses to send and receive SMS (and later iMessage) directly inside a web dashboard and integrate with CRMs such as GoHighLevel and HubSpot.
This is a serious long-term SaaS project, not a simple website. We are looking for experienced engineers or a small team that has previously worked on messaging platforms, telecom APIs, CRM integrations, or automation systems.
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**Core Features (Phase 1 – MVP)**
1. User account system (multi-tenant SaaS)
2. Inbox / conversation view (like WhatsApp Web or Intercom)
3. Send & receive SMS using API providers (Twilio or Telnyx)
4. Contact/lead management
5. Webhooks (receive messages and status updates)
6. Automation workflows:
* new lead follow-up
* no-reply reminders
* scheduled messages
7. Campaign/broadcast messaging
8. Analytics dashboard (delivery rate, response rate)
9. Role-based access (admin, agent)
10. Stripe billing/subscriptions
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**Phase 2 (after MVP)**
* CRM integrations (GoHighLevel, HubSpot, Zapier)
* API for external integrations
* Appointment reminders
* Notification system
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**Phase 3 (Advanced — experience required)**
* iMessage relay architecture using macOS devices (device-based messaging gateway)
* Message routing (iMessage with SMS fallback)
* Dedicated number management
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**Technical Requirements**
**Backend**
* (preferred) OR Python (Django/FastAPI)
* REST API development
* Webhook handling
* Queue systems (Redis / RabbitMQ / BullMQ)
**Frontend**
* React /
* Real-time chat UI
* or WebSockets
**Database**
* PostgreSQL
* Conversation-based message storage
**Integrations**
* Twilio or Telnyx
* Stripe subscriptions
* OAuth2 CRM integrations
* Zapier webhooks
**Infrastructure**
* AWS or GCP deployment
* Docker containers
* Background workers
* Scalable architecture
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**Important (Must Have Experience)**
Please apply ONLY if you have experience with at least one of the following:
* Messaging/SMS platforms
* CRM integrations
* Chat or inbox systems
* Telecommunication APIs
* Real-time applications (WebSockets)
When applying, include:
1. Links to similar SaaS platforms you built
2. Your role in those projects
3. Tech stack used
4. Estimated timeline for MVP
5. Team structure (if agency)
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**Project Type**
Long-term project (3 months+)
Possibility of ongoing maintenance and partnership.
**Budget**
We are open to:
* Hourly contracts
* Fixed milestone payments
We are not looking for beginners.
We need developers who understand scalable SaaS architecture and messaging systems.
Thank you
Contract duration of 1 to 3 months.
Mandatory skills: Autodesk AutoCAD, WordPress, Architectural Design, Construction, Lead Generation
Sprachkenntnisse
- English
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