Building Custom Enterprise Software
We design, scale, and maintain mission-critical applications and backend API infrastructure engineered for performance and reliability.
Enterprise & SME deployments across regional sectors
Full-stack POS, academic, property & weighbridge builds
High-throughput API infrastructure & cloud management
eTIMS integration, tax regulation & transactional security
Flagship products built for scalable business performance
Flagship products built for scalable business performance
RetailPro POS
Process sales quickly and track stock across all your shops in real time.
Rentify Property Management System
Manage tenants, collect rent, and track property expenses in one place.
Arimi School Management System
Handle admissions, fees, grades, and parent communication for your school.
Easy Finance Admin
Connect your bank to automatically track income, expenses, and cashflow.
OnyeshaMessage
Show vendors your payment confirmation while hiding your balance and other messages.
Weighbridge
Record vehicle weights at the scale and generate summary reports instantly.
Seamless integrations built for enterprise operations
Seamless integrations built for enterprise operations
eTIMS Compliance
Automated KRA eTIMS invoice signatures and fiscal logging.
Payment Gateways
M-Pesa Daraja, Jenga API, Co-op Bank Connect, and card processing.
WhatsApp Business API
Automated customer messaging, receipts, and interactive bots.
Bulk SMS Routing
Transactional notifications, OTPs, and automated system alerts.
AI Workflows
Custom AI agents and operational automation pipelines.
Who We Are
Arimi Software Limited is an enterprise software engineering firm dedicated to building high-performance applications and mission-critical backend infrastructure. We design, deploy, and maintain custom solutions that keep businesses operating seamlessly.
From desktop point-of-sale systems (RetailPro) and property management suites (Rentify) to academic administrative engines (ASMS) and heavy-logistics weighbridge automation, our products are engineered for throughput, uptime, and operational clarity.
We specialize in deep system integration—connecting operations directly to KRA eTIMS fiscal compliance, automated payment gateways (M-Pesa, Jenga API, Co-op Bank Connect), and enterprise communication rails. At Arimi Software Limited, we focus on engineering software that works with absolute reliability so your enterprise can scale.
Trusted by businesses to build reliable software
"RetailPro transformed how we run operations. Being able to track sales, manage inventory, and oversee business remotely gave us the foundation we needed to scale."
"Integrating AI and WhatsApp into our school infrastructure completely automated our administrative processes and record keeping. System efficiency has improved significantly."
"The custom web platform revamped our customer communication. Our clients can place orders directly online and receive instant notifications every step of the way."
"The web platform they built allowed our members to easily create and manage accounts online, modernizing our digital service offerings."
"RetailPro transformed how we run operations. Being able to track sales, manage inventory, and oversee business remotely gave us the foundation we needed to scale."
"Integrating AI and WhatsApp into our school infrastructure completely automated our administrative processes and record keeping. System efficiency has improved significantly."
"The custom web platform revamped our customer communication. Our clients can place orders directly online and receive instant notifications every step of the way."
"The web platform they built allowed our members to easily create and manage accounts online, modernizing our digital service offerings."