Engineering Regional Solutions
Almost every consumer product in Kenya settles through M-Pesa, and almost every B2B one has to produce an invoice KRA will accept. Those two facts decide more about a Kenyan product's architecture than the choice of framework does. We build software for the Kenyan market with the Daraja API, eTIMS invoicing and the Data Protection Act 2019 treated as design inputs rather than integration tickets raised in the last sprint.
Specialized Solutions We Deliver
M-Pesa Daraja Integration
STK Push, C2B and B2C flows against Safaricom's Daraja API, with the callback handling, idempotency and reconciliation that decide whether payments actually balance at month end.
KRA eTIMS Invoicing
Electronic tax invoices generated from the same ledger entries that feed internal reporting, so the KRA submission and the accounts never disagree.
Data Protection Act 2019
Lawful basis, data subject rights and ODPC registration handled in the data model, not bolted on as a privacy policy page.
Offline-Tolerant Mobile
Apps that keep working through the connectivity gaps Kenyan field users actually hit, syncing when the network returns rather than losing the entry.
Multi-Rail Payments
M-Pesa alongside Airtel Money, Pesalink and card, behind one payment abstraction so adding a rail is configuration rather than a rewrite.
Technical Infrastructure Blueprint
Kenyan engagements start with the two integrations that constrain everything downstream, because discovering an M-Pesa or eTIMS limitation late forces a data-model change rather than a code change.
Rails and Tax First
We map the M-Pesa flows and the eTIMS invoice obligations your product triggers before the schema is settled, since both dictate what a transaction record has to carry.
Reconciliation by Design
Every payment carries its Daraja reference, its timestamp and its callback state, so a failed settlement is traceable rather than argued about.
Data Protection Review
Personal data is classified and its lawful basis recorded during design, which is what makes an ODPC enquiry answerable from the system.
Field Conditions
Performance is tested against real Kenyan mobile conditions rather than office wifi, because that is where the product is used.
Why Partners Select Wise Hustlers
Rails Knowledge, Not Rails Enthusiasm
We have written at length on Daraja integration and eTIMS mechanics. Read it before you hire anyone — including us.
Regulated-System Engineering
We build tax and compliance systems where the output is inspected by an authority. That discipline transfers directly to eTIMS.
Honest About Presence
We are not a Nairobi firm and will not pretend to be. If a local office matters more than engineering depth, hire locally — we will say so.
Overlapping Hours
EAT overlaps our working day almost entirely, so decisions do not wait overnight.
Frequently Asked Questions
Can you integrate M-Pesa into an existing product?
Yes. The work is usually less about the Daraja calls and more about reconciliation — making sure callbacks are idempotent, timeouts do not double-charge, and every payment can be traced end to end. That is where most existing integrations turn out to be weak.
Do you handle KRA eTIMS compliance?
We build the invoicing so eTIMS submissions come from the same entries as your internal accounts. We are engineers, not tax agents — your accountant confirms treatment, and we make the system produce what they confirm.
Do you have an office in Nairobi?
No. We are Wise Hustlers Technologies Pvt Ltd, headquartered in Chandigarh, India, delivering into East Africa. If physical local presence is a requirement, a Nairobi firm is the better fit and we would rather tell you now.
What does a Kenyan build typically cost?
It depends on the rails involved. An M-Pesa-only consumer app is a different project from one that also has to satisfy eTIMS and hold personal data under the Data Protection Act. We scope against those obligations rather than quoting a screen count.
Let's Pressure-Test It
Book a free call and tell us what you're building. Worst case, you leave with honest feedback and a clearer plan. Best case, you leave with a team that ships.