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Services

API Integration Services

Reliable connections between your app and the tools you depend on

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STK · C2B · B2CM-Pesa
REST · SOAPAPIs
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Integrations

Payments & Third-Party Connectors

Connect your product to M-Pesa Daraja, banks, Stripe, PayPal, CRMs, and custom REST or SOAP APIs. We handle auth, webhooks, retries, logging, and documentation so integrations stay maintainable.

Get a free quoteView pricing

Capabilities

What's included

💳

Payment Integrations

  • M-Pesa STK Push, callbacks & reconciliation
  • Stripe, PayPal, Flutterwave
  • Bank transfer & payout APIs
  • Idempotent payment handling
🔌

Business Systems

  • ERP, CRM & accounting connectors
  • Webhook receivers & dispatchers
  • Scheduled sync jobs
  • Sandbox → production rollout

Ideal for

Built for teams like yours

  • SaaS billing upgrades
  • E-commerce checkout
  • Fintech & lending apps
  • Internal ops automation

Our process

How we deliver

  1. 01

    Discovery

    We map your goals, users, and existing tools in a focused kickoff call.

  2. 02

    Design & Plan

    Wireframes, scope, timeline, and milestone pricing — agreed before build starts.

  3. 03

    Build & Test

    Agile delivery with demos, staging reviews, and QA on real devices.

  4. 04

    Launch & Support

    Deployment, handover docs, training, and post-launch support options.

Outcomes

Why choose Sierlab

  • ✓Automate payments and reduce errors
  • ✓Real-time sync between platforms
  • ✓Clear audit trails for finance teams
  • ✓Documented APIs your devs can extend

Tech stack

Tools we use

  • M-Pesa Daraja
  • Stripe
  • Node.js
  • Webhooks
  • Redis
  • Postman

FAQ

Common questions

Can you fix a broken M-Pesa integration?
Yes. We audit callbacks, credentials, and idempotency — then patch or rebuild the flow with proper logging.
Do you sign NDAs for API credentials?
Of course. We use secure secret storage and never commit keys to source control.

Ready to start your api integration services project?

Tell us about your goals — we'll reply with a clear scope and timeline, usually within one business day.

Request a quoteChat on WhatsApp

Explore more

Related services

📈

SEO Optimization

Search Visibility & Performance

Rank higher, load faster, and attract qualified traffic

Learn more
🛡️

Cybersecurity Consulting

Assessments & Risk Reduction

Identify vulnerabilities before attackers do

Learn more
💻

Custom Web Applications

Management & Business Systems

Smart, scalable systems built around how your team actually works

Learn more
💬

Have a project in mind?

We build custom software, e-commerce, and integrations for businesses across Kenya. Let's discuss your goals.

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Sierlab

Sierlab embarks on a journey of innovating and building smart digital solutions for businesses across Kenya and beyond.

Lumumba Drive, Roysambu, Nairobi, Kenya 🇰🇪

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