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API & Backend Development

Backends That Scale.
APIs That Just Work.

We build the server-side systems that power your web and mobile products — fast, secure, and documented. From a single Daraja integration to a full microservices backend with queues, webhooks, and admin tooling.

Scope My Backend

What We Build

Backend work spans a wide range — here's where we spend most of our time.

REST & GraphQL APIs

Designed to spec, documented with OpenAPI/Swagger, versioned properly. Built with Hono + Bun or Node — fast and lightweight.

M-Pesa Daraja Integration

STK Push, C2B, B2C, reversals — full Daraja API implementation with proper callback handling, logging, and retry logic.

Third-party integrations

WhatsApp Business API, Meta Graph API, Google APIs, payment gateways, CRMs, ERP systems. We've integrated most of them.

Database design & optimisation

MongoDB, PostgreSQL, or both. Schema design, indexing strategy, and query optimisation — so your backend doesn't slow down at scale.

Background jobs & queues

Cron jobs, message queues (BullMQ, Redis), and event-driven architectures for tasks that shouldn't block your API response.

Admin dashboards & internal tools

The backend API paired with a clean admin panel for your team — user management, data views, reports, and operations tools.

API Development FAQs

What backend stack do you use?

Our primary stack is Hono + Bun for performance-critical APIs, and Node.js + Express for projects that need broader ecosystem support. We're framework-pragmatic — we use what's right for your project.

Do you write API documentation?

Yes. Every API we build ships with OpenAPI-compatible documentation. If you have a team integrating against it, they'll have what they need.

Can you integrate with our existing systems?

Usually yes. We've integrated with Safaricom, ERPs, local and international payment gateways, CRMs, and a wide range of SaaS APIs. Send us your docs and we'll assess it.

How do you handle security?

JWT authentication, rate limiting, input validation, parameterised queries, encrypted secrets — not as afterthoughts but baked into the architecture from day one.

Need a backend built?

Tell us what you're connecting, what you need it to do, and what scale you're planning for.

Get a QuoteBook a Call

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Altarion Systems

We transform visions into cutting-edge websites, apps, and marketing campaigns that deliver real impact. Whether you need a captivating design, a high-performing app, or unstoppable SEO, Altarion Systems is your launchpad.

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