Custom Software Development — PROFEX TECHNOLOGY LIMITED

Overview

When off-the-shelf software doesn't fit, we build exactly what you need.

Every business has processes that generic software can't handle. Approval chains with 14 steps. Industry-specific calculations. Legacy data that lives in three different formats across two decades of systems. We specialise in building bespoke software that maps to your actual workflows, not forcing your team to adapt to someone else's idea of how things should work.

From workflow automation and legacy system modernisation to API-first architectures and multi-tenant SaaS platforms, we handle the full lifecycle. Our approach is API-first, cloud-native, and built for change, because your business won't stop evolving, and neither should your software. We've been doing this in Hong Kong since 2012, and we've learned that the best software is invisible: it just works.

Capabilities

What We Build

Internal Business Tools

Custom dashboards, admin panels, and workflow engines that centralise your operations. We build tools your team actually wants to use: fast, focused, and tailored to your exact data model. From inventory management screens to executive KPI dashboards, every interface is designed around how your team works, not the other way around.

API & Integration Platforms

Middleware, data pipelines, and system connectors that make your disparate tools talk to each other. We build robust APIs that connect your CRM to your ERP, your POS to your warehouse, and your legacy on-prem system to your modern web app. RESTful, GraphQL, or event-driven — whatever your architecture needs.

Legacy System Modernisation

Rewrite old systems, migrate databases, and modernise architecture without disrupting your business. We've migrated legacy monoliths to cloud-native microservices, replaced Access databases with PostgreSQL, and turned 20-year-old desktop apps into modern web platforms, all while keeping the lights on during the transition.

Workflow Automation

Approval flows, document processing, and task management systems that eliminate manual busywork. We automate the repetitive tasks that eat up your team's time: purchase order approvals, invoice processing, compliance checks, employee onboarding workflows. If a human is doing it repeatedly, we can probably automate it.

Multi-Tenant SaaS Platforms

Subscription billing, role-based access, and tenant isolation built from the ground up. We help companies turn their internal tools into commercial products — complete with onboarding flows, usage metering, Stripe integration, and the kind of multi-tenant data architecture that keeps customer data properly separated.

Data Dashboards & Reporting

Real-time analytics, BI tools, and custom visualisations that turn your data into decisions. We build dashboards that pull from multiple data sources, crunch the numbers in real time, and present insights in formats your team can actually act on — not just another chart nobody looks at.

How We Work

Our Process

Requirements & Architecture

Deep-dive into business logic, user workflows, data models, and system design. We map every process, interview every stakeholder, and produce architecture documents before writing a single line of code.

Planning & Roadmap

We choose the right technologies, design the system architecture, and create a clear roadmap broken into milestones with visible deliverables every two weeks.

Build & Review

We develop in short cycles with weekly demos so you see progress throughout. Every piece of code is reviewed and tested before it goes live. No surprises, no big reveals after months of silence.

Integration & Testing

System integration testing, load testing, security reviews, and UAT with real users. We simulate production traffic, run AI-assisted vulnerability scans (with full penetration testing on request), and put the software in front of actual users to catch what automated tests miss.

Deployment & Evolution

Production deployment, monitoring setup, documentation, and ongoing feature development. We don't disappear after launch. We set up alerts, dashboards, and a maintenance plan to keep your software running and evolving.

Our Work

Project Showcase

Custom software we've designed, built, and deployed for clients across industries.

Human Resources

Profex HRMS

Our own HR platform for the full employee lifecycle (staff records, attendance, shift rostering, leave and Hong Kong payroll with MPF), on a Next.js + Spring Boot stack.

Next.jsSpring BootMySQL

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Finance & Accounting

Profex Accounting System

Our own multi-tenant SaaS accounting platform: invoicing, quotations, expenses, banking and double-entry accounting with live financial reports, on a Next.js + Django REST stack.

Next.jsDjango RESTPostgreSQL

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Property Management

Tenant Management System

A complete, bespoke property-management platform built for a Hong Kong property operator: a dozen connected modules from tenancies and finance to IoT metering and smart locks, on a Next.js + Django REST stack.

Next.jsDjango RESTPostgreSQL

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Green Wiser EV charging operator admin console

EV Charging / Energy

Green Wiser: EV Charging Platform

The operator platform behind a Hong Kong EV charging network: a Cloudflare Workers + Supabase backend, a Node.js OCPP server that controls physical chargers, and a React Admin console for sites, chargers, firmware, and load management.

React AdminCloudflare WorkersOCPP

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