Our Custom .NET Development Services Include:
We offer a full suite of .NET development services for your businesses, from custom enterprise applications to cloud-based solutions.
.NET Development
Trusted Microsoft-Certified .NET Developers for Scalable and Secure Solutions
Designpluz is a leading .NET development company in Sydney with over 18 years of experience delivering innovative solutions. Our Microsoft Certified Technology Experts ensure your project is in expert hands.
Microsoft .NET Application Development Agency
As a leading .NET development company, we design applications with scalability and security in mind. As your business grows, so should your software. We build cloud-native .NET applications utilising the Microsoft .NET framework, C# and cloud ecosystems that effortlessly adapt to increased demands, handling more users and data without any costly infrastructure upgrades.
We offer a full range of dot net development services to support everything from custom application development to future maintenance. Whether you’re a start-up with a revolutionary idea or an enterprise aiming to improve customer experience. Our team of .NET developers build high-performing applications that empower you to innovate and lead your business.
Start Your Project Today.NET Web Application Development
We specialise in ASP.NET development for web applications, leveraging the MVC framework to build high-performance solutions with a seamless user experience.
.NET Application Performance Optimisation
Our backend development expertise ensures that your application performs efficiently under high loads.
.NET Mobile App Development
We create feature-rich, cross-platform mobile applications using Xamarin and .NET MAUI for both iOS and Android platforms.
.NET Windows Desktop Application
Develop secure and high-performance desktop applications using the latest .NET development frameworks.
.NET Cloud Native SaaS Development
Our team builds cloud-based solutions that are highly scalable and secure, ensuring seamless integration with cloud platforms like Microsoft Azure, AWS, Google Cloud and other cloud platforms.
.NET Microservices Development and Deployment
Create flexible and scalable microservices-based architecture using .NET development for enhanced agility and speed.
.NET API Development
Our experienced .NET developers build custom API integration solutions to enhance connectivity and streamline your business processes.
Migrate to .NET
We help you seamlessly migrate your existing applications to the latest .NET framework for improved performance and security.
.NET Legacy Application Modernisation
Upgrade your existing applications with modern .NET software solutions, ensuring responsive designs, improved performance, and security.
.NET EDI Platforms
Develop efficient EDI platforms to streamline business communications and data exchange.
.NET Custom CRM Solutions
We develop tailored CRM systems using custom .NET (Dot NET) solutions to enhance customer relationship management and business processes.
.NET Maintenance And Support
We provide .NET maintenance and support with guaranteed reliability to keep your applications running smoothly and fully updated concerning patches, security upgrades and new features.
Local Expertise, Global Talent
We mesh the strengths of both worlds—global talent and local expertise. Our Sydney-based leaders collaborate with you to identify your business requirements and translate them into technical plans. Our global development team based in India implements these plans with efficiency, providing cost-effective and high-quality solutions.
Future-Proof Technology with MACH Architecture
We adopt the latest MACH architecture approach (Microservices-based, API-first approach, Cloud-Native infrastructure, and a Headless design) to build scalable and adaptable applications. Our modular architecture ensures flexibility and seamless platform integration. Decoupling the front end and back end enhances customisation and speed with an API-first approach for maximum efficiency.
Discover what our clients have to say about their experiences with us.
Designpluz were quick, efficient, listened to our brief, aligned to our business needs and delivered.
Ben Perrin
Global Head of Strategic Implementation at Lonza
It is rare to find a business that is so attentive these days and delivers such good results!
Jeffrey Tran
Founder At Wok Culture
Why Choose .NET Technology for Your Project?
Here's why you should choose .NET for your project:
High Scalability and Performance
.NET supports high loads with effortless horizontal and vertical scaling.
Strong Security
It has built-in security capabilities such as authorisation, authentication, and secure communication protocols.
Rich Ecosystem
An Immense library and framework set to speed up development.
Cloud Compatibility
Deploy and manage your .NET applications across Microsoft Azure, AWS, and Google Cloud environments for optimal performance and future scalability.
Microservices Architecture
Great for creating microservices-based applications for increased modularity and scalability.
Open Source and Free
Reduced development costs through access to a thriving developer community.
DevOps Integration
Seamless integration with platforms such as Azure DevOps, GitHub Actions, and Jenkins for continuous delivery.
Modern Programming Language
We built applications with C# and the .NET framework, leveraging technologies such as ASP.NET Core, .NET MAUI/Xamarin, and Microsoft Azure.
Rich Development Environment with Powerful Tools.
.NET offers a powerful development environment with tools like Visual Studio and Visual Studio Code for efficient coding and debugging.
Our Promise
At our core, transparency and accountability define our business ethos.
We believe in fostering trust through open communication and clear expectations. Whether we’re handling small-scale tasks or large-scale projects, our commitment remains unwavering. We ensure that every step of the way, our clients are informed and involved, empowering them to make well-informed decisions. Transparency isn’t just a promise; it’s a cornerstone of how we operate, ensuring mutual respect and successful partnerships
We develop scalable cloud native web and mobile applications that streamline business processes and improve customer experience.
Get Started.NET CMS Platforms We Work With
We build content management solutions using leading .NET CMS platforms:
Umbraco
An open-source .NET CMS known for its flexibility and scalability. Suitable for both small and large-scale web applications.
Kentico
A fully integrated ASP.NET platform ideal for developing complex websites, intranets, and e-commerce solutions.
Our Engagement Models
We offer flexible engagement models to suit your project needs:
Fixed-Price Model
Ideal for small projects with a well-defined scope. Best suited for projects lasting less than 2 months.
Time and Materials Model
Our most popular model is suitable for large projects with evolving requirements. We follow Agile development principles to deliver the best results that keep improving over 3 to 12 months.
Dedicated Development Team
Our senior .NET developers have become an extension of your team on a full-time basis for over 12 months, focusing exclusively on your project.
We’ve helped Thousands of Australian businesses lead through digital.
Process We Follow
Step 1
Understanding Your Requirements
First, we begin by understanding your business, project objectives, users and the technical requirements. This will help us draw up a master plan and select the right NET technologies for your solution.
Step 2
Planning & Solution Architecture
Our team comes up with the project structure, technology stack, database planning, and system architecture. Our focus is on creating scalable, secure applications that will support future business growth.
Step 3
UI/UX Design
We create clean and user-friendly interfaces that improve usability and customer experience. The design is tailored to match your brand while ensuring smooth navigation across devices.
Step 4
.NET Application Development
We build application with latest Microsoft technologies, like ASP.NET Core, .NET Framework, and cloud-based tools. The agile development process is adopted for quicker and more flexible delivery.
Step 5
Testing & Quality Assurance
Before launch, the application goes through detailed testing to check functionality, performance, security, and compatibility. We ensure everything runs smoothly and meets project requirements.
Step 6
Launch & Support
We deploy the application to the live environment with minimal downtime once approved. We are still supporting you, keeping you updated, monitoring for security and improving features.
Meet your expert team
Priya Songappan
Founder / Creative Head
Leads strategy, UI/UX, and the digital marketing team with 20 years of experience. Priya has worked with businesses of all sizes across diverse industries to drive sustainable business growth through design, strategy, and execution. She is deeply involved in projects from start to finish, as this is where her passion lies.
Jag Kandasamy
Director - Software, AI & Data
Jag has over 20 years of experience in architecture and delivery of enterprise software, large scale websites, eCommerce platforms and ERP integrations. He specialises in secure, scalable cloud architecture on Azure and AWS, ensuring reliable delivery and high-performance solutions from strategy through to deployment and support.
Shaun Cooper
Technical Project Manager
Experienced project manager from a technical background with great communication & client management skills. Shaun has a transparent approach towards projects and has a great eye for detail, resulting in perfection. Approaches projects in a proven, methodical manner, ensuring timely delivery and accurate budget management.
Subanki Chandrasekaran
Technical Business Analyst
Subanki is a Technical Business Analyst with over 15 years of experience helping organisations deliver successful digital solutions. She enjoys turning complex business challenges into clear, practical requirements and works closely with clients, designers, and developers to deliver solutions that are intuitive, scalable, and aligned with business goals.
Murugesan Thangavel
Head of Technology and Delivery
Leading the delivery of enterprise software, web, mobile, and cloud solutions, Murugesan brings over 15 years of industry experience. He brings a wealth of knowledge in Microsoft technologies, Azure, AWS, microservices, and enterprise integrations, enabling companies to modernise their operations with secure, scalable, and high-performing digital solutions.
Veerakumar Krishnasamy
Senior Software Tester
Veerakumar has 7+ years of software testing experience and is well-versed in software automation, manual testing, API testing, database testing, and CI/CD integration. He has extensive experience in Selenium, Playwright, Java and C# and contributes to achieving reliable enterprise software releases quickly and at top quality.
Muthukumar Mathivanan
Senior Frontend Developer (Angular)
Having developed responsive web applications for over 9 years across healthcare, digital wellness, and skilled labour management, he has established strong expertise in Angular development. He has a keen interest in frontend architecture, user experience, and performance, which aids in providing high-quality digital solutions and engaging user experiences.
Frequently Asked Questions
What's the average timeline for building a custom .NET solution?
The timeline for a .NET development project varies based on complexity, scope, and specific requirements.
Small to medium projects (e.g., basic web apps, APIs) typically take 3–6 months.
Large or enterprise-level solutions (e.g., custom ERP, SaaS platforms) may require 6–12 months or more.
At Designpluz, we work closely with clients to define realistic timelines that align with business goals. Our structured approach to Microsoft .NET development services ensures projects stay on track, and we consistently deliver on time without compromising quality.
How much does a .NET project cost when working with a Sydney based company?
The cost of a .NET development project typically ranges from:
AUD 30,000 to 150,000 for small to mid-sized applications (e.g., business web apps, APIs)
AUD 150,000 to 500,000+ for complex enterprise systems (e.g., custom ERPs, scalable SaaS platforms)
At Designpluz, we provide fixed-price quotes or flexible engagement models based on your project’s Complexity. We’re committed to transparent pricing and strict budget adherence—no hidden fees or surprises.
Need an accurate estimate? Book a discovery call to discuss your requirements, and we’ll provide a detailed breakdown.
What types of applications can be built with .NET?
Basically, .NET is a versatile framework; by using it, we can develop web applications, mobile apps, desktop applications, APIs, and gaming applications.
Why choose .NET for enterprise applications?
Dot net excels in enterprise environments due to its scalability & reliability, seamless integration with Microsoft products, advanced security and robust error handling.
Is .NET technology suitable for my business?
Yes, .NET technology is the right choice for all types of businesses from start-ups to large enterprises. It provides high-performance, scalable, and secure applications, backed by Microsoft’s enterprise support. At Designpluz, we build applications using .NET with a responsive design, speed up their growth, and facilitate the digitalisation journey.
Do you provide cloud deployment services?
Yes. We develop and deploy .NET applications on leading cloud platforms, including Microsoft Azure, AWS, and Google Cloud, ensuring scalability, security, and reliable performance.
What industries do you serve?
We provide .NET development services for a wide range of industries, including healthcare, finance, retail, manufacturing, logistics, education, hospitality, construction, and real estate.
