Avenstra
Avenstra Software · Sri Lanka

Software that runs your business. Developers by the hour.

We build CRM, HRM, ERP integrations, data warehouses, booking platforms and AI assistants for businesses in Sri Lanka and the UAE, or add our developers to your own team by the hour. AI speeds up our engineering; senior engineers review every release.

Start a project Hire a developer · from USD 25 / hour
Clients in Sri Lanka and the UAE Retail · Services · Finance · HR · Logistics · Travel
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Services

Software for every part of your business.

Custom software development in Sri Lanka, from a single portal to a full ERP. We take on the whole job: discovery, architecture, build, integration, hosting and support. You work directly with the engineers who write the code.

AI chat & knowledge systemsNew

Assistants that answer from your own documents and data, cite their sources, and live inside the tools your people already use.

RAG over policies & contractsWeb & WhatsApp chatbotsAI searchDocument extractionAI inside your ERPPrivate deployment & audit logs

Business applications

CRM, HRM, ERP and line-of-business systems shaped around how your teams already work.

CRM & salesHR & payrollSales force appsERP & back-officeWorkflows & approvalsCustomer portals

Integrations & data

Connect the systems you already own and get one reliable view of the numbers.

SAP & ERP integrationData warehousesReporting & dashboardsMigrations & bulk loadsDatabase security

Websites, mobile & cloud

Company websites, apps your people carry, and infrastructure that stays fast, secure and backed up as you grow.

Company websitesCross-platform appsCloud hosting & CI/CDWhatsApp BusinessBackups & recovery

Booking & reservation systems

Booking engines, availability management and partner portals for travel, hospitality and service businesses.

Booking enginesAvailability & reservationsPartner portalsSupplier API integrationsVisa processing
What we build

Systems we build and run.

From a single module to a full platform. Every system below is something our engineers have designed, built and supported in production.

CRM

Leads, customers, follow-ups and sales pipelines in one place.

PipelinesQuotesWhatsApp follow-ups

HRM & payroll

Leave, attendance, onboarding, payroll and incentives.

Self-serviceApprovalsIncentives

Sales force apps

Field sales teams take orders, visit customers and report on mobile.

MobileOfflineTargets

ERP integrations

Connect SAP and other ERPs to your web, mobile and data systems.

SAPAPIsReal-time sync

Data warehouse & reporting

One reliable view of sales, finance and operations.

ETLDashboardsScheduled reports

AI chat assistants

Staff and customers ask questions and get answers from your own documents and data, with sources.

RAGWhatsAppPrivate

Booking & reservations

Online booking, availability, approvals and payments for travel, hospitality and services.

Self-bookingApprovalsPayments

AI sales analytics

Managers ask questions about SAP and field-sales data in plain language and get answers, trends and charts.

SAP dataField salesPlain-language Q&A
How we build

Built with AI. Checked by engineers.

We use AI tools across design, coding and testing, so you get working software sooner and at lower cost, without giving up quality or control.

AI speeds up the buildScaffolding, boilerplate, test cases and documentation are drafted in hours, not days.
Senior engineers review every releaseNothing reaches production without a human code review and automated tests.
You own all of the codeYour data stays private, and the source code and documentation are handed over to you.
Approach

Four stages, no surprises.

Every engagement follows the same path, whether it is a six-week portal or a multi-year platform. You see working software early and often.

01

Discover

We map the process, the systems it touches and what success looks like, then agree scope, timeline and price.

02

Design

Data model, integrations and key screens are designed and signed off before the build starts.

03

Build

Short sprints with a working release at the end of each one, on a staging site your team can use.

04

Launch & support

Go-live, data migration and training, followed by ongoing support and improvements.

Technology

Proven tools, chosen for the long run.

Mature, well-supported technology your future team can maintain, connected to whatever you already run.

Application

C# / .NETASP.NET CoreBlazorREST & SOAP

Data

SQL ServerData warehousingReportingTDE & backups

AI

LLM APIsRAG pipelinesVector searchAI coding tools

Integrations

SAP CPIREST & SOAP APIsPayment gatewaysSSO

Cloud

AWSAzureCI/CDMonitoring

Mobile & messaging

Mobile appsWhatsApp BusinessPush notifications
About Avenstra

A software company that builds and stays.

Avenstra Software is a Sri Lankan engineering company building custom software, integrations and AI systems for businesses in Sri Lanka and the UAE.

We build CRM and HRM systems, sales force apps, booking platforms, ERP integrations, data warehouses and AI assistants. Our engineers come from integration-heavy industries, and that discipline shapes everything we build.

Clients keep working with us long after launch, because the people who designed the system are the ones who support it.

Based in
Sri Lanka
Clients in
Sri Lanka · UAE
Industries
Retail, services, finance, HR, logistics, travel
Engagements
Fixed-scope projects, developers by the hour, dedicated teams, long-term support
FAQ

Questions we hear most.

Straight answers on cost, timelines, AI and ownership. Ask us anything else through the form below.

How much does custom software cost in Sri Lanka?

It depends on scope. After a short discovery session we quote a fixed price for a defined scope, an hourly rate for developers working with your team, or a monthly rate for a dedicated development team. Larger platforms are planned in phases, so you pay for working software step by step.

How long does a project take?

A focused portal or integration can go live in about six weeks. Larger systems are delivered in short sprints, with a working release on a staging site at the end of each one.

Can you build an AI chatbot that answers from our own documents?

Yes. We build retrieval-augmented (RAG) assistants that answer from your policies, contracts and system data and show the source of each answer. They can run on your website, on WhatsApp or inside your own systems, with access controls and audit logs.

Can you connect SAP or our ERP to other systems?

Yes. We integrate SAP (including SAP CPI) and other ERPs with web portals, mobile sales apps and data warehouses through REST and SOAP APIs, in real time or on a schedule.

Do you build HRM and payroll systems?

Yes. Leave, attendance, onboarding, payroll, incentives and approvals, set up around your own company policies, with self-service for employees and managers.

Who owns the code and the data?

You do. The source code, documentation and data are yours, and everything is handed over to you.

Do you work with companies outside Sri Lanka?

Yes. We work with clients in Sri Lanka and the UAE, and our process works just as well remotely: shared staging sites, regular demos and direct access to the engineers.

What happens after launch?

The engineers who built your system support it: fixes, updates, monitoring, backups and new features, under an ongoing support agreement.

Can I hire a developer by the hour?

Yes. Our .NET, SQL Server, mobile, AI and QA engineers can join your team from USD 25 an hour, with a minimum of 40 hours a month. You get weekly timesheets and pay only for hours worked, or you can take a full-time dedicated developer on a monthly rate. A senior engineer reviews the work, and the code is yours.

Start a project

Tell us what you need to build.

Share a few lines about the problem. We will come back with questions or a time to talk.

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