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QuantumNest Technologies
QuantumNest

Build

APIs, Integrations & Backend

Connect your systems so data flows without copy and paste.

Starting price
from KES 30,000
Typical timeline
1–6 weeks depending on the number of systems.

The problem

Your tools don't talk to each other

Sales in one system, payments in another, stock in a spreadsheet. Every gap means manual work and errors.

  • Double entry between apps
  • Partners asking for an API you don't have
  • Slow queries and an overloaded database
  • Fragile integrations nobody understands

What we build

Everything included in apis, integrations

APIs

  • REST and webhook APIs with documentation
  • Authentication, OAuth 2.0 and API keys (including Deriv-style OAuth flows)
  • Rate limiting, logging and versioning

Integrations

  • SMS, WhatsApp Business and email providers
  • Google Maps and location services
  • QuickBooks, Zoho, Odoo and accounting exports
  • Google Workspace and Microsoft 365

Data

  • PostgreSQL and Supabase schema design
  • Migrations from spreadsheets or legacy systems
  • Query tuning, indexes and row-level security

Deliverables

What you get

  • Documented API or integration
  • Automated tests for critical paths
  • Monitoring and error alerts
  • Handover notes

FAQ

APIs, Integrations & Backend: common questions

Something else? Ask us directly and you'll get a straight answer.

Can you build an API for my partners?

Yes. We design clear endpoints, secure them with keys or OAuth, and publish documentation your partners can follow.

Can you move us off spreadsheets?

Yes. We design a proper database, migrate your data, and give you simple screens to manage it.

Often combined with

  • from KES 6,000

    Payments & M-Pesa Integration

    Daraja STK Push, C2B, B2C and reconciliation, plus Paystack, Flutterwave, Pesapal, Stripe and PayPal.

    Learn more
  • from KES 15,000

    AI Chatbots & Assistants

    Support, sales and booking assistants trained on your documents. English, Swahili and a human handoff when needed.

    Learn more
  • from KES 150,000

    Custom AI & Model Training

    Fine-tuned LLMs, forecasting, credit scoring, fraud detection, OCR and trading signal models, deployed as APIs.

    Learn more

Let's talk about your apis, integrations project

Tell us what you need. You'll get a reply within one working day, with honest advice and a clear next step.

Mon–Sat, 8:00–18:00 EAT · Nairobi, Kenya