Top 10+ C# Development Companies in St. Louis | C# Developers St. Louis 2026
Last Updated 24th August 2026 | Category: Top Web Development Firms
The List of Top 10+ C# Development Companies in St. Louis | Top C# Developers St. Louis 2026
1. Hyperlink InfoSystem
Sponsored
Claim Pending
Founded
2011
Employees
1000+
Hourly Rate
< $25
Our Rating
5.0/5
(65 reviews)
Avg. Project Cost
USD 50,000+
Contact No
+13097914105
Hyperlink InfoSystem is a leading web and mobile app development company. They convert process complexity into simplicity using their skill. They plan and evaluate the estimation of concept, feasibility, design, and deadline with absolute precision. They remain focused and dedicated to these competencies and they constantly endeavor to enhance and develops the skills of every member of their team. Their company opinion is to develop products that not just enhance the end user experience but also offers to the business growth of their clients.
Their clients highly recommend them for their high-level communication, project management and paying acute attention to detail keeping their service standards high.
Their clients highly recommend them for their high-level communication, project management and paying acute attention to detail keeping their service standards high.
2. iFactory
Not Claimed
Founded
1992
Employees
10 - 49
Hourly Rate
$100 - $149
Our Rating
4.4/5
(8 reviews)
Avg. Project Cost
USD 25,000+
Contact No
+16174260609
Email
sales@ifactory.com
For over 20 years, Boston's iFactory has delivered innovative, inspiring, and intelligent interactive solutions to the world’s leading institutions. They have proven success in developing sophisticated projects for companies and organizations across multiple verticals, bringing their knowledge of best practices together for you. They bring the best practices from all verticals to solve your problems.
3. Arke
Not Claimed
Founded
2005
Employees
50 - 249
Hourly Rate
$150 - $199
Our Rating
4.6/5
(7 reviews)
Avg. Project Cost
USD 5,000,000+
Contact No
+14048123123
Email
cspears@arke.com
Their team of skilled developers and designers allows the most effective designing services for your business websites & mobile apps. They are making and maintaining amazing new technology while creating the website, which helps in running your business easily. They take on the problems their customers think impossible and they develop amazing results while doing so.
Not Claimed
Founded
2009
Employees
50 - 249
Hourly Rate
N/A
Our Rating
4.5/5
(6 reviews)
Avg. Project Cost
USD 100,000+
Contact No
+14088022885
Email
team@sdi.la
They deliver the best web development services with the best designs at the cheapest price, although of geology. They safeguard their client’s exclusive information and adhere to international best practices for confidentiality, coding standards, and maintenance. They would love to work with you on your app idea or web design requirements. It is one of the best web development companies.
5. thoughtbot
Not Claimed
Founded
2003
Employees
50 - 249
Hourly Rate
$150 - $199
Our Rating
4.7/5
(6 reviews)
Avg. Project Cost
USD 5,000,000+
Contact No
+18779762687
Email
hello@thoughtbot.com
thoughtbot is a team of designers and developers that make web and mobile applications for our clients. They aim to create great user experiences powered by well-made software. They then design and code while focusing on quality and maintainability. They work iteratively and deploy working code regularly. They know the integration of technology in personal space for the best support.
6. Nextworld
Not Claimed
Founded
2016
Employees
50 - 249
Hourly Rate
$150 - $199
Our Rating
4.2/5
(7 reviews)
Avg. Project Cost
USD 25,000+
Contact No
+13039033345
Email
info@nextworld.net
Their mission is to be the clear software development leader engineering simply brilliant enterprise solutions while cultivating a world-class company culture and happy, profitable customers. They provide an enterprise cloud development platform and applications built on that platform that abstracts away technology from the business solution and allows you to keep your eyes squarely on executing your company's mission.
Not Claimed
Founded
2005
Employees
10 - 49
Hourly Rate
$50 - $99
Our Rating
4.3/5
(7 reviews)
Avg. Project Cost
USD 10,000+
Contact No
+15122200035
Email
bhwinfo@thebhwgroup.com
The BHW Group is an Austin-based web and mobile design & development firm. Their repeat business is indicative of the quality and value delivered on each of their projects. They work with clients to define, design, develop, and deliver these applications. Their team has a diverse knowledge base and is always ready for a new challenge.
8. Team SI
Not Claimed
Founded
2010
Employees
50 - 249
Hourly Rate
< $25
Our Rating
4.3/5
(8 reviews)
Avg. Project Cost
USD 10,000+
Contact No
+15015539321
Email
hello@teamsi.com
Team SI is a good web and mobile app development company. They have worked with clients large & small, always providing value and carrying with you by constant engagement and stay within deadlines. Their web design team will custom-design a responsive website for you that works on any device. When they meet with a client or prospective client, they do a full technical review of what the requirements/deliverables are for the project.
Not Claimed
Founded
2008
Employees
10 - 49
Hourly Rate
$100 - $149
Our Rating
4.7/5
(6 reviews)
Avg. Project Cost
USD 25,000+
Contact No
+14808141900
Skyhook is a high-performance website development firm based in Phoenix. They are the local leaders in the WordPress community, operating more advanced WordPress sites than anyone in the region. They believe that a website should drive results. Skyhook websites outperform others because, unlike other development firms, they begin with strategy and we don’t stop helping after launch.
10. Starkmedia
Not Claimed
Founded
1996
Employees
10 - 49
Hourly Rate
$100 - $149
Our Rating
4.2/5
(7 reviews)
Avg. Project Cost
USD 25,000+
Contact No
+14142262710
Email
info@starkmedia.com
Starkmedia is a full-service digital agency dedicated to building awareness and achieving results through web design and development and digital marketing. They have a team of professional and experienced web designers who are working very close to their web developers to make excellent end products.
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