MYER
Developed and maintained scalable Warehouse Resource Management software.
Payment Gateway Software Development Services
Custom payment gateway software built around your business needs.
Anglicare
Mobile app with ARCHIBUS integration kiosk stand software development.
Visuals2Go
Cross-platform mobile & tablet app for disabled people.
NobleOak
A complex financial model with end-to-end and AI customised user journey.
SydneyWater
Custom software integration between SAP ERP and InEight (project controls software).
Hillsong
Mobile donations form with payment gateway integration.
Metro Finance
Designed and developed a web application to manage & streamline shifts.
Site360
SaaS platform – Geofenced visitor management & fully customisable workflow forms.
Acorn Rentals
Custom accident replacement vehicle system that automates the entire rental process.
TaxToday
Streamlining instant refunds with highly secure cloud native application.
Simplify Online Payments with Custom-Built Gateway Solutions
Businesses with complex payment operations need infrastructure that can adapt to their transaction workflows, markets and systems. Custom payment gateway software provides this by allowing businesses to define how transactions are processed, routed and integrated with their wider ecosystem. Designpluz delivers custom payment gateway software development with multi-currency processing, merchant management and API-driven integrations, helping businesses manage transactions more efficiently while maintaining greater control over their payment operations.
Case Studies
We pride ourselves on the work we deliver and the outcomes we achieve for our clients everyday.
Our commitment to client satisfaction is evident through our genuine 5-star
google reviews
I have been working with Designpluz for the past year, and found the team to provide fantastic support in leading various projects.
Steve Jenke
Site 360
The Designpluz team has allowed us to accelerate the time to market for our platform, translating to money in the bank.
David Philips
Biode
I wish I could give you more than 5 Star for the work you have delivered for me Designpluz Team. Your work is fantastic and the professionalism is top notch.
Shashi Singh
YourOSHC
I’ve recently worked with the Designpluz team to develop our site, they have taken a complex offline model and built this into our website.
Sara Gill
NobleOak
I was looking for a design team that could build me a new website and solidify our brand in the market. If I were building a critical website in future, this would be my go-to team.
David Gleig
Bedbug Wholesale
Thx for helping us with our website design and development for our new venture. You made it really easy for us to consider the options available and delivered a great website which presents our services and capability succinctly and professionally to our target clients.
Manish Goklaney
Verveo
The team went above and beyond to launch earlier than expected and handled every challenge with patience and care. They were always responsive, easy to communicate with, and proactive in finding solutions.
Florencia Nicogossian
Topaz Furniture
Working with a dedicated project manager who was our single point of contact made communication seamless and efficient, which allowed us to go live on time and on budget
Mark Camilleri
Bremick
CRC have had a great experience with Designpluz on the development and implementation of our new website. They were thorough in their work making sure our specifications were met with accessibility in mind, and they provided a wonderful contemporary look.
Gwen Rogers
Community Restorative Center
Designpluz is an amazing company to work with! Everyone in their team is lovely to work and collaborate with. They always action task efficiently to make beautiful end results.
Amarni Story
New Age Veneers
Working with Designpluz was a great experience to build our Strathfield Plaza Website. Response time was commendable and overall result was great. Thanks to Mia and the Team!!
Matthew Woo
Strathfield Plaza
An experienced team, a bunch of great people, and simply amazing work. Designpluz was very patient with us as we chopped and changed our project
George Khoury
Knomis
Transparency is key in any partnership, and Designpluz excels in this aspect. They're upfront about their processes, timelines, and costs, which instills trust and confidence in their services.
Trinh Bui
Newington Lane
Priya and Mia have assisted us with our website updates and have been so professional, listening to what we wanted and providing us with updates throughout the process. ...they are so skilled at what they do and excellent at communicating with us on our level!
Joanne Baldwin
KU Legal
Priya and the team were fantastic to work with. They took the time to understand our brief, and deliver amazing results with high attention to detail.
Tommy Lim
SF Capital
The team at Designpluz are fantastic - quick responses; excellent work and just so easy to deal with particularly for website support. They are my go to for any website work.
Anthony Gray
MEAUST
Their answers to questions and general communication was very good which made the whole process a little easier.
Rob Archibald
Emjay Products
They are approachable, responsive, and have consistently taken the time to understand our marketing needs, accommodating all our requests with professionalism and efficiency. Looking forward to continued growth with Designpluz.
Jocelyn Szot
Nover
Our Numbers Tell Our Story
We Design and Develop High-calibre Software.
110
+
110+ Five-star Google reviews showcasing our commitment to excellence.
45
+
Over 45 In-house technology experts driving innovation and quality.
50,000
+
50,000 Australians use our software every day to streamline their work.
1,000
+
Over 1000 Successful projects delivered with precision and expertise.
100
%
100% Fully Australian-owned family business with over 18 years of proven reliability.
40
+
Over $40 Million Processed annually through our software, empowering businesses.
Our Payment Gateway Software Development Services
Custom Payment Gateway Development
Standard gateways may not support the specific payment methods, workflows, or business rules your operations require. Designpluz's payment gateway development approach shapes the software around these requirements, allowing your processes to define the solution rather than adapting to a standard platform.
Online Payment Processing
An online payment gateway needs reliable transaction flows from initiation to completion to support reliable payment processing. Designpluz structures these flows to manage authorisation, status updates, failed payments and refunds, helping businesses process payments consistently across their digital platforms.
Marketplace Payment Gateway
Marketplaces need specialised payment infrastructure to collect customer payments and manage transactions across multiple sellers. To accommodate large payment volumes, we develop marketplace payment gateways that handle merchant onboarding, payment routing, and transaction management, helping platforms coordinate payments across their multi-vendor operations.
Payment Gateway Migration
As your business expands, adds payment methods or handles higher transaction volumes, your existing gateway may no longer meet your needs. At that point, we help you migrate to a more suitable gateway using APIs and integration tools, transitioning payment workflows with minimal disruption.
API Development & Integration
API development connects your payment gateway with the websites, mobile apps and enterprise systems that support your operations. To achieve this, we use REST APIs and SDKs, establish reliable connections with existing platforms and third-party providers, and structure the integrations around your technology environment.
Mobile Payment Gateway
Mobile applications require payment functionality that fits naturally within the app experience. Designpluz integrates payment gateway capabilities directly into mobile applications, enabling secure payment flows and multiple payment methods.
Digital Wallet Development
Businesses need digital wallets when they want to offer customers the convenience of storing payment details and using them for quicker transactions. To support this experience, Designpluz develops custom wallet solutions for web and mobile platforms, incorporating secure authentication, tokenised payment information, balance management and payment functionality to support convenient digital transactions.
Payment Gateway Features We Develop
Merchant Dashboard
A payment reporting dashboard gives businesses a clear view of transactions, refunds, settlements and account activity. Designpluz connects the dashboard with the payment gateway backend and database using React.js, Node.js and REST APIs, providing secure access to up-to-date payment information.
Fraud Detection & Risk Management
Fraud detection functionality monitors transaction activity, identifies unusual payment patterns and flags potentially risky transactions. Our team structures these controls into a clear risk management workflow, helping businesses review suspicious activity and take appropriate action before potential fraud creates greater financial exposure.
Reporting & Analytics
Payment reporting organises transaction data into metrics such as transaction volumes, success rates, refunds and failures. Our experts structure this information into reporting and analytics capabilities, helping businesses monitor payment performance, identify trends and make informed decisions about their payment operations.
Transaction Management
A transaction management system provides controls for searching, filtering and viewing transactions, processing refunds, handling cancellations and tracking payment status. We organise these controls into a clear workflow, helping merchants locate transactions quickly, take required actions and maintain accurate payment records.
Payment Security Features
Encryption, tokenisation and secure authentication help protect sensitive payment information throughout each transaction. Designpluz incorporates these security features into the gateway to safeguard payment data, strengthen transaction protection and support secure payment processing.
The core technologies powering our
software solutions.
Our team has extensive development experience in modern mobile app technologies.
Why Choose Designpluz?
Experienced Fintech Development Team
As a fintech software development company, our experts combine software engineering expertise with an understanding of transaction workflows to develop payment gateway software around your business requirements. This tailored approach helps address complex payment and integration needs.
Scalable Transaction Processing Systems
Handling high transaction volumes requires strong architectural expertise to maintain system performance and reliability. Designpluz applies scalable architecture principles and modern cloud technologies to build robust processing systems that support demanding transaction workloads and long-term business growth.
Secure Payment Architecture
Payment infrastructure handles sensitive transaction data, making security fundamental to its design. We understand the importance of secure payment architecture and incorporate secure data handling, protected integrations and appropriate access controls into the solution.
End-to-End Payment Technology Expertise
Payment gateway development involves multiple technologies and stages that require specialised expertise throughout the project. Designpluz brings experienced professionals across payment technology, software development and integrations to support the complete development lifecycle, from planning and development through to deployment.
Our Development Process
Step 1
Requirement Analysis
We begin by understanding your payment requirements, business workflows, target users, payment methods and integration needs. This requirement analysis helps us define the gateway’s scope and establish the foundation for its architecture.
Step 2
Payment Architecture Design
The defined requirements are translated into the payment gateway’s architecture, covering transaction flows, system components, provider/acquirer integrations and security considerations. This establishes the technical structure that guides development.
Step 3
Payment Interface & Dashboard Development
With the payment architecture defined, we develop the gateway interface and merchant dashboard, implementing transaction views, payment actions, refund management and status tracking based on the approved workflows. The completed functionality then moves into testing and validation.
Step 4
Testing & Security Validation
The developed gateway is tested across its key payment workflows, integration testing, transaction-flow testing, security testing and failure/edge-case testing. Security validations are also performed to assess data protection and transaction handling before deployment.
Step 5
Deployment & Integration
Once the gateway has passed testing, it is deployed and connected with the required business systems, payment providers and platforms. The integrated environment is then checked to ensure the gateway operates correctly within the wider ecosystem.
Step 6
Maintenance & Support
Following deployment, we provide ongoing support to address issues, maintain integrations and implement required updates. The gateway can also be updated as your payment requirements, integrations, and business operations evolve.
Frequently Asked Questions
How does a custom payment gateway work?
A custom payment gateway securely connects customers, merchants and payment providers to process online transactions. It manages the payment request, authorisation, transaction status and related workflows before communicating the result back to the relevant platform.
How much does payment gateway development cost in Australia?
Developing a custom payment gateway in Australia generally costs between AUD $60,000 and AUD $400,000+ depending on features and complexity, whereas integrating an existing engine typically costs between AUD $5,000 and AUD $15,000 in development labour.
How long does it take to build a payment gateway?
A custom payment gateway can take approximately 6-18 months to build. The timeline depends on the project scope, transaction volumes, acquirer integrations and compliance requirements. At Designpluz, we identify these requirements early to establish a realistic development timeline.
Key timeline considerations include the following:
- Overall development: Approximately 6-18 months, depending on the gateway’s complexity and scope.
- PCI DSS assessment: Around 3-6 months, depending on the compliance requirements and assessment process.
- Acquirer certification: Approximately 3-9 months, depending on the acquirer and certification requirements.
- Fraud model training: Ongoing, as fraud models may require production transaction data to improve their accuracy.
Can you integrate payment gateways with existing applications?
Yes. Payment gateways can be integrated with existing websites, mobile applications, marketplaces, SaaS platforms and enterprise systems. Designpluz uses APIs and other integration methods to connect the gateway with your existing technology environment.
Can payment gateways support multiple currencies?
Yes. A payment gateway can be designed to support multiple currencies and payment markets. This can include handling different currencies during transaction processing and supporting the payment and settlement requirements of different regions.
What types of payment gateway solutions can you build?
As a payment gateway software development company, Designpluz develops custom payment gateway solutions for different business models and payment environments. These can include online payment gateways, mobile payment gateways, marketplace payment gateways and solutions supporting digital wallets, multi-currency payments and high-volume transactions.
