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

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

As of November 2026, this directory tracks 59 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 $100, the median rating is 4.6, and 18% 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 17% 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.

59
Verified Firms
$100 - $149 / hr
Most Common Rate
4.8
Average Rating
17%
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 $25 - $49 / hr 50 - 249 2009 — Visit Profile
3
4.7 9 $100 - $149 / hr 2 - 9 2015 — Visit Profile
4 — — $50 - $99 / hr 10 - 49 2013 Wien, Austria Visit Profile
5 4.8 9 $100 - $149 / hr 10 - 49 2011 — Visit Profile
6
4.1 9 $150 - $199 / hr 50 - 249 2001 — Visit Profile
7
4.2 10 $100 - $149 / hr 250 - 999 1999 Salzburg, Austria Visit Profile
8
— — $100 - $149 / hr 2 - 9 2009 — Visit Profile
9
4.6 9 N/A N/A N/A — Visit Profile
10 — — $100 - $149 / hr 10 - 49 2011 — Visit Profile

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

Sponsored
2011
< $25
1000+
EUR 2,200,345+
Web Development Web Design PHP Development WordPress Development AngularJS Development
No reviews yet
2011
$100 - $149
10 - 49
EUR 88,014+
Web Development Web Design PHP Development
2022
$50 - $99
10 - 49
2020
$25 - $49
2 - 9
2021
$50 - $99
2 - 9
No reviews yet
2017
$100 - $149
10 - 49
2013
$100 - $149
Freelancer
No reviews yet
2022
$50 - $99
10 - 49
4.1 9 Reviews
2001
$150 - $199
50 - 249
EUR 2,200,345+
Web Development Web Design PHP Development E-Commerce Custom Software Development
No reviews yet
2024
$50 - $99
2 - 9
No reviews yet
—
Undisclosed
50 - 249
4.7 8 Reviews
—
Undisclosed
10 - 49
No reviews yet
2022
$50 - $99
2 - 9
1999
$25 - $49
50 - 249
2017
Undisclosed
2 - 9
No reviews yet
2017
$100 - $149
2 - 9
2020
$200 - $300
10 - 49
2010
$100 - $149
2 - 9
2014
$50 - $99
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.

Yes — a good number of Web Development companies in Vienna have built their client base primarily from overseas, particularly across North America and Western Europe, and have the operational habits to prove it: documented handoffs, async-friendly communication, and contracts written with international clients in mind. If cross-border delivery matters to you, ask a Web Development firm in Vienna directly for a reference from a client in your own country rather than taking "we work globally" at face value.

There's no single number here — a Web Development company in Vienna might quote a few thousand dollars for a narrow, well-defined build and a much larger figure for a full product with integrations and ongoing support. The only way to get a real answer for your situation is to send the same brief to a handful of Web Development firms in Vienna and compare the itemized breakdowns, not just the bottom-line total.

The line items that push a Web Development project in Vienna over budget are rarely the obvious ones — it's usually the number of third-party integrations, how deep the testing needs to go, and what happens after launch in terms of support and maintenance. Compliance and security work, if your project needs it, adds a real chunk on top. A proper discovery conversation with your Web Development partner in Vienna should surface most of this before you sign anything.

Yes — you can filter Web Development companies in Vienna by budget range, hourly rate, team size, and area of specialization before reaching out to anyone. Pairing those filters with review scores usually gets you to a realistic shortlist in a few minutes instead of manually working through every listing in the category.

Get clear, specific answers on: who owns the code once it's delivered, what the support window looks like after launch, how they handle a team member leaving mid-project, and what their process is when a client requests a scope change. Vague or evasive answers to any of these from a Web Development company in Vienna are a bigger red flag than a slightly higher quote.

A good Web Development company in Vienna won't make you ask for updates — you should have standing access to a task board, regular written progress notes, and visibility into a staging environment where you can see the work as it's built, not just at the end of a sprint. If a firm treats this kind of access as an inconvenience rather than standard practice, take that seriously before signing anything longer-term.

Bring a real problem from your own project to a discovery call and see how the team engages with it — the quality of their follow-up questions tells you more than any slide deck. Ask to see actual code from past work, not just screenshots of the finished product, and look for evidence of technical writing, open-source contributions, or conference talks, which are harder to fake than a polished portfolio page. A Web Development company in Vienna with genuine depth won't be shy about any of this.

The most experienced Web Development developers in Vienna tend to come out of companies that have been operating for the better part of a decade or more, with senior staff who've seen a wide range of project types and scales rather than a narrow slice. That kind of institutional memory — knowing what tends to go wrong on a complex build before it happens — is hard for newer firms to replicate. Verified reviews and direct references remain the best way to confirm it's real and not just a claim on a website.
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