Top 10+ C# Development Companies in Perth | C# Developers Perth 2026

Last Updated 04th November 2026 | Category: Top Web Development Firms

As of November 2026, this directory tracks 58 c-sharp companies. Hyperlink InfoSystem currently sits at the top of the list (5.0-star average from 497 verified reviews, $25 - $49 / hr, in business since 2011). Looking at the group as a whole, the midpoint hourly rate is $125, the median rating is 4.5, and 21% report a team of 50 or more. Most frequently listed specialties here include Mobile App Development, Web Development, AI Development, and Bot Development.

Every company on this page is evaluated on the same real signals: how clients have rated their work, what they charge per hour, how big their team is, and how long they've been in business. Clients rate these c-sharp firms 4.8/5 on average. $100 - $149 / hr is the most common rate band. Roughly 21% of the companies listed report a headcount of 50 or more. Before reaching out to any shortlisted firm, it's worth cross-checking its review history and portfolio directly - every listing is manually checked (founding year, services, team size) and reviews go through a moderation step before they go live.

58
Verified Firms
$100 - $149 / hr
Most Common Rate
4.8
Average Rating
21%
Have 50+ Employees
How this list is built: Companies are added only after manual research into their foundation year, service offerings, ratings, and employee strength. Client reviews go through a verification step before being marked Verified and shown publicly. Listings marked Sponsored pay for premium placement — sponsorship does not affect star ratings or review content.

Top-Ranked c-sharp Companies

Compare the highest-ranked firms first side by side.

Rank Company Rating Reviews Hourly Rate Team Size Founded Headquarters Action
1 5.0 497 $25 - $49 / hr 1,000 - 9,999 2011 Jersey City, NJ Visit Profile
2 4.6 7 $50 - $99 / hr 250 - 999 2000 Kharkiv, Ukraine Visit Profile
3 4.4 10 $150 - $199 / hr 10 - 49 1987 Richmond, Australia Visit Profile
4
4.1 8 $100 - $149 / hr 10 - 49 2012 — Visit Profile
5 4.3 9 $50 - $99 / hr 2 - 9 2010 — Visit Profile
6 4.4 10 $100 - $149 / hr 10 - 49 2016 — Visit Profile
7 — — $150 - $199 / hr 50 - 249 2010 — Visit Profile
8 4.8 8 $50 - $99 / hr 50 - 249 2006 — Visit Profile
9
4.5 10 $25 - $49 / hr 10 - 49 2001 — Visit Profile

The List of Top 10+ C# Development Companies in Perth | Top C# Developers Perth November 2026

Sponsored
2011
< $25
1000+
AUD 144,879+
Web Development Web Design PHP Development WordPress Development AngularJS Development Node.js Development E-Commerce Mobile App Development UI/UX Design Internet of Things AR App Development VR App Development Logo Designing CMS Development
4.7 8 Reviews
—
Undisclosed
10 - 49
4.4 8 Reviews
2006
$50 - $99
10 - 49
2000
$25 - $49
50 - 249
AUD 72,439+
Web Development Web Design PHP Development WordPress Development Drupal Mobile App Development Custom Software Development CMS Development Ruby on Rails Magento
1996
Undisclosed
10 - 49
AUD 144,879+
Custom Software Development E-commerce Development Internet Marketing Mobile App Development SEO Social Media Marketing
—
Undisclosed
2 - 9
2006
Undisclosed
10 - 49
AUD 3,621,968+
Cloud Solutions E-commerce Development Enterprise App Development Mobile App Development Web Design Web Development
1987
$150 - $199
10 - 49
AUD 72,439+
Web Development Web Design Mobile App Development Custom Software Development
2014
$25 - $49
10 - 49
AUD 72,439+
Web Development Web Design PHP Development E-Commerce Mobile App Development
4.8 6 Reviews
1998
$100 - $149
10 - 49
AUD 14,488+
Cloud Solutions Content Management System Custom Software Development Mobile App Development UI-UX Design Web Development
2009
N/A
50 - 249
AUD 36,220+
Web Development Web Design PHP Development WordPress Development Drupal Mobile App Development UI/UX Design Custom Software Development Ruby on Rails
2004
$25 - $49
250 - 999
AUD 36,220+
Android App Development E-commerce Development Enterprise App Development iOS App Development UI-UX Design Web Development
2010
$200 - $300
10 - 49
AUD 7,243,935+
AR App Development Digital Strategy IoT App Development Mobile App Development
2016
$100 - $149
10 - 49
AUD 36,220+
Web Development Web Design PHP Development WordPress Development AngularJS Development Drupal Mobile App Development CMS Development
2012
$100 - $149
10 - 49
AUD 36,220+
Custom Software Development E-commerce Development iOS App Development iPhone App Development Mobile App Development UI-UX Design
4.1 7 Reviews
2006
$150 - $199
10 - 49
AUD 14,488+
Web Development Web Design E-Commerce Mobile App Development UI/UX Design Custom Software Development Ruby on Rails
2011
Undisclosed
50 - 249
No reviews yet
—
Undisclosed
10 - 49
No reviews yet
—
Undisclosed
2 - 9
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FAQ

Frequently Asked Questions

Got questions about our specialized technology solutions? We have the answers to help you make informed decisions.

Enterprise-ready Web Development companies in Perth tend to look different from smaller shops in a few specific ways: named project leads instead of rotating contacts, documented change-management processes, and infrastructure experience that goes beyond a single client's traffic level. Many carry ISO or SOC-type certifications as a baseline, but the real signal is whether they can describe a past engagement of comparable scale in concrete detail. A Web Development firm in Perth that hesitates on that question probably hasn't done it before.

Listings for Web Development companies in Perth update continuously as new reviews come in, with a more thorough re-ranking pass every few months. That means a firm coasting on an old reputation without fresh client feedback will gradually slide, while newer companies with strong recent delivery can move up — the goal is that the Perth list reflects how firms are performing now, not two years ago.

Look past the pitch deck: read the portfolio for technical substance, check independent reviews rather than the testimonials on the company's own site, and ask for a reference from a project similar in scope to yours. Then ask directly how they handle QA and what happens when a bug slips through after delivery. A Web Development company in Perth that's confident in its process will answer that last question specifically, not with a vague reassurance.

They're not everything, but they're not nothing either. Certifications like ISO 27001 for data security or CMMI for process maturity signal that a Web Development company in Perth has been through external scrutiny of how it operates, which is a reasonable baseline. Treat them as one data point among several — a firm with strong certifications but weak references is still a risk, and vice versa.

It tells you quite a lot, actually. A Web Development company in Perth with a healthy share of repeat clients is being chosen again by people who already know exactly what working with them is like — a stronger signal than a first-time review can offer. When comparing options, ask directly what share of their business comes from returning clients and, if possible, talk to one of them.

Listen to what they ask about before they start talking solutions. A Web Development company in Perth genuinely focused on outcomes will want to understand your users, your revenue model, and your competitors before proposing anything technical. One that jumps straight to a timeline and a quote without asking those questions is optimizing for winning the deal, not for whether the thing they build actually works for your business.

Platforms like Clutch and GoodFirms are a good starting point, since they require some independent validation of the work described. A strong case study from a Web Development company in Perth spells out the original problem, what was actually built, and a measurable result — not just a screenshot and a paragraph of praise. Match case studies to your own industry and scale wherever you can; a great result in an unrelated space tells you less than it seems to.

Look for Web Development companies in Perth that offer dedicated-team arrangements and can point to client relationships that have lasted multiple years, not just multiple projects. That kind of continuity usually means the firm treats your product roadmap as something they have a stake in, rather than a queue of tickets to clear. Ask directly for a reference from a client they've worked with for two-plus years — the answer (or lack of one) tells you a lot.
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