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ApexTechX

Enterprise Software Development Kenya — Designed, Built, Operated

Enterprise software & fintech systems your businessruns on.

Nairobi-based engineering consultancy delivering Safaricom M-PESA Daraja integration & STK Push pipelines, automated KRA eTIMS fiscalization, and custom Enterprise AI & RAG systems built in Nairobi for mission-critical operations across East Africa.

Plan a systemSee what we build
6 components4-phase processOperated in-house
Fig. 01 — Customer system, logical view
01903805707600105210315420OrderPaymentInventoryCustomerPlatform coreAPI · EVENTS · DATAone system, one source of truthDashboardAutomationReportingWebhooksEVENT BUS — MESSAGES IN MOTION
Interactive: Click any node to simulate data flow

[ Regional Engineering · Nairobi & East Africa ]

Enterprise software development in Kenya: fintech, automated compliance & applied AI

ApexTechX is an enterprise software development consultancy in Nairobi delivering mission-critical digital systems across East Africa. We specialize in high-throughput Safaricom M-PESA Daraja integration & STK Push pipelines, automated KRA eTIMS fiscalization, custom Enterprise AI & RAG systems built in Nairobi, and legacy system modernization.

[Enterprise Engineering]AXT-KE-01

Enterprise software development Kenya & custom ERP builder

As senior SaaS developers in Nairobi, we build bespoke web applications, customer portals, and serve as a dedicated custom ERP builder for East Africa. We execute legacy system modernization in Nairobi, migrating brittle monolithic databases to resilient, event-driven architectures with high availability.

  • Custom ERP builder East Africa & SaaS developers Nairobi
  • Legacy system modernization Nairobi & cloud-native backends
[Applied Machine Learning]AXT-KE-02

Enterprise AI solutions Kenya & RAG pipeline development

Transform raw operational data into actionable competitive advantages with our specialized Enterprise AI solutions in Kenya. We deliver custom LLM integration in East Africa, secure RAG pipeline development, and intelligent document extraction workflows tailored for enterprise knowledge bases and regulatory records.

  • Custom Enterprise AI & RAG systems built in Nairobi
  • Custom LLM integration East Africa & private vector retrieval
[Workflow Automation]AXT-KE-03

Business process automation agency Nairobi & workflow engines

Eliminate human transcription errors, operational bottlenecks, and manual reconciliations through our business process automation agency in Nairobi. We build event-driven workflow engines that connect your CRM, ERP, and inventory pipelines with automated bank reconciliation software in Kenya.

  • Automated bank reconciliation software Kenya (Equity, KCB, NCBA)
  • Audit-ready event streaming & multi-system orchestration
[Fintech & Fiscal Compliance]AXT-KE-04

Safaricom M-PESA Daraja integration & STK Push pipelines

Partner with a seasoned Safaricom Daraja API developer and payment gateway developers in Nairobi. We engineer ultra-reliable M-PESA STK Push integration services, C2B/B2C automated webhooks, Paybill & Till reconciliation, and automated KRA eTIMS fiscalization middleware.

  • Safaricom Daraja API developer: STK Push, C2B, B2C, reversals
  • KRA eTIMS API setup & automated fiscal invoice signing
Daraja API Blueprint →eTIMS Middleware Blueprint →

[Component layer]

Everything a system needs, in one place

A business system is more than software. These are the parts we design, build, and operate for every client — as one system, not a stack of services.

[core]AXT-01

Enterprise software development Kenya

SaaS developers in Nairobi and custom ERP builder for East Africa engineering core backends and business logic platforms.

[data]AXT-02

Automated bank reconciliation software Kenya

ETL data pipelines, real-time telemetry, and automated bank reconciliation software in Kenya connecting M-PESA with commercial banking ledgers.

[link]AXT-03

Safaricom Daraja API & payment gateways

Safaricom Daraja API developer services, M-PESA STK Push integration pipelines, and automated KRA eTIMS fiscalization middleware.

[auto]AXT-04

Enterprise AI solutions & RAG pipelines

Enterprise AI solutions in Kenya, custom LLM integration in East Africa, and business process automation agency Nairobi running repeatable operations.

[infra]AXT-05

Legacy system modernization Nairobi

Legacy system modernization in Nairobi, resilient cloud infrastructure, and low-latency East African data architecture.

[ops]AXT-06

Managed operations & SLAs

24/7 telemetry monitoring, proactive incident support, and dedicated Kenyan systems engineers keeping your mission-critical software running.

[Build sequence]

Four phases, from blank page to running system

Every engagement runs the same disciplined sequence. Nothing ships that hasn't been designed, built, and hardened first.

  1. 01

    Design

    Map the job before a line is written. We learn how the work actually happens, then specify the system.

    Phase 01 · 2–4 weeks
  2. 02

    Build

    Working slices ship every week. You see progress, not promises — real screens, real data, real behavior.

    Phase 02 · weekly slices
  3. 03

    Harden

    Security, load, and failure get tested before real traffic arrives. We break it so you don't.

    Phase 03 · test + load
  4. 04

    Operate

    We run it with you after launch — monitoring, tuning, and improving as your business moves.

    Phase 04 · ongoing

[Systems in service]

Built, and still running

The systems below went live and stayed live. We keep operating the ones we build.

Start yours

M-PESA & eTIMS reconciliation

[FINTECH]

Settles tens of thousands of daily M-PESA transactions against bank statements with automated KRA eTIMS fiscal compliance.

In production

Order & fulfillment platform

[CORE]

Custom web application development Nairobi powering retail commerce from checkout to dispatch across Kenya.

In production

Claims & workflow automation

[AI/AUTO]

AI solutions for business Kenya routing, enriching, and deciding claims with automated fraud scoring.

In production

Field dispatch & fleet logistics

[LINK]

Coordinates crews, vehicles, and live customer updates across Nairobi and East African transit routes.

In production

[Field notes]

From the systems floor

What we learn building and running systems, written down so it isn't lost.

All notes

Designing the event bus before it's cool

Why every system we build ends up with a bus in the middle.

Read

A spec-first price is the only fair price

How we price systems honestly: map the job, write the plan, then name the number.

Read

We break the system so you don't

The hardening phase: security, load, and failure testing before launch.

Read

[ Commission a system ]

Tell us about the system you need

Write to us about what your business runs on today, what it should run on tomorrow, and where it hurts. We'll reply with a plan and a price.

Start a specor write to hello@apextechx.com

1.You describe the job it has to do

2.We reply within one business day with a plan and a price

3.We design, build, and operate it