Top 10+ C# Development Companies in Sunnyvale | C# Developers Sunnyvale 2026
Last Updated 04th September 2026 | Category: Top Web Development FirmsThe List of Top 10+ C# Development Companies in Sunnyvale | Top C# Developers Sunnyvale September 2026
1. Hyperlink InfoSystem
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Details
| Founded: | 2011 |
|---|---|
| Hourly Rates: | < $25 |
| Employees: | 1000+ |
| Avg. Project Cost: | $2,500,000+ |
| Ratings: |
5.0
497 Reviews
|
Since 2011, Hyperlink InfoSystem has operated as a technology services provider. Hyperlink InfoSystem focuses on Mobile App Development. Hyperlink InfoSystem employs 1000+ people. Clients can expect pricing around < $25/hr, with projects averaging about $100,000. Overall, Hyperlink InfoSystem is one of the options worth shortlisting for a technology project.
Details
| Founded: | 2009 |
|---|---|
| Hourly Rates: | $100 - $149 |
| Employees: | 10 - 49 |
| Avg. Project Cost: | $5,000,000+ |
| Ratings: |
4.6
8 Reviews
|
Since 2009, TECKpert has operated as a technology services provider. The company's main offerings are Mobile App Development and Custom Software Development. The company operates with a team of 10 - 49 professionals. Typical hourly rates run around $100 - $149/hr, with an average project cost near $2,500,000. This gives a quick snapshot of what to expect when working with TECKpert.
Details
| Founded: | 2007 |
|---|---|
| Hourly Rates: | $100 - $149 |
| Employees: | 10 - 49 |
| Avg. Project Cost: | $100,000+ |
| Ratings: | No reviews yet |
RocketFuel is a software development company that turns ideas into working products. Their core services include Web Development and Digital Marketing. The company operates with a team of 10 - 49 professionals. Typical hourly rates run around $100 - $149/hr, with an average project cost near $5,000,000. This profile is a starting point — reach out to RocketFuel directly to discuss project specifics.
Details
| Founded: | 2008 |
|---|---|
| Hourly Rates: | $100 - $149 |
| Employees: | 50 - 249 |
| Avg. Project Cost: | $2,500,000+ |
| Ratings: | No reviews yet |
Pyxl is a technology company founded in 2008. The company's day-to-day work covers web platforms, mobile apps, and bespoke software. With 50 - 249 people on staff, Pyxl can take on projects of varying size. Typical hourly rates run around $100 - $149/hr, with an average project cost near $50,000. This gives a quick snapshot of what to expect when working with Pyxl.
Details
| Founded: | 2005 |
|---|---|
| Hourly Rates: | $100 - $149 |
| Employees: | 10 - 49 |
| Avg. Project Cost: | $100,000+ |
| Ratings: |
4.2
6 Reviews
|
Since 2005, Ontarget has operated as a technology services provider. The company's main offerings are Mobile App Development, Digital Marketing and UI/UX Design. The company operates with a team of 10 - 49 professionals. Typical hourly rates run around $100 - $149/hr, with an average project cost near $5,000,000. This gives a quick snapshot of what to expect when working with Ontarget.
Details
| Founded: | 2001 |
|---|---|
| Hourly Rates: | $100 - $149 |
| Employees: | 50 - 249 |
| Avg. Project Cost: | $50,000+ |
| Ratings: | No reviews yet |
Since 2001, Blue Water has operated as a technology services provider. Blue Water focuses on Web Development. With 50 - 249 people on staff, Blue Water can take on projects of varying size. Typical hourly rates run around $100 - $149/hr, with an average project cost near $5,000,000. These details offer a useful starting point when evaluating Blue Water.
Details
| Founded: | 2013 |
|---|---|
| Hourly Rates: | N/A |
| Employees: | 10 - 49 |
| Avg. Project Cost: | $50,000+ |
| Ratings: |
4.7
8 Reviews
|
Since 2013, Platypi has operated as a technology services provider. Their core services include Mobile App Development. The company operates with a team of 10 - 49 professionals. The average project on record costs around $50,000. This profile is a starting point — reach out to Platypi directly to discuss project specifics.
Details
| Founded: | 2003 |
|---|---|
| Hourly Rates: | $100 - $149 |
| Employees: | 2 - 9 |
| Avg. Project Cost: | $10,000+ |
| Ratings: | No reviews yet |
Robot House Creative is a software development company that turns ideas into working products. Their core services include Branding & Graphic Design. The company operates with a team of 2 - 9 professionals. Typical hourly rates run around $100 - $149/hr, with an average project cost near $50,000. This profile is a starting point — reach out to Robot House Creative directly to discuss project specifics.
Details
| Founded: | 1999 |
|---|---|
| Hourly Rates: | $100 - $149 |
| Employees: | 50 - 249 |
| Avg. Project Cost: | $2,500,000+ |
| Ratings: | No reviews yet |
Businesses looking for a reliable technology partner often consider WebEnertia. WebEnertia builds web and mobile products, plus custom software for clients with specific needs. With 50 - 249 people on staff, WebEnertia can take on projects of varying size. Typical hourly rates run around $100 - $149/hr, with an average project cost near $25,000. This profile is a starting point — reach out to WebEnertia directly to discuss project specifics.
Details
| Founded: | 1997 |
|---|---|
| Hourly Rates: | $100 - $149 |
| Employees: | 10 - 49 |
| Avg. Project Cost: | $50,000+ |
| Ratings: | No reviews yet |
Urban Insight works with clients to plan, build, and ship digital products. Urban Insight focuses on Mobile App Development. With 10 - 49 people on staff, Urban Insight can take on projects of varying size. Clients can expect pricing around $100 - $149/hr, with projects averaging about $25,000. These details offer a useful starting point when evaluating Urban Insight.
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FAQ
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Got questions about our specialized technology solutions? We have the answers to help you make informed decisions.
Start by writing down what "done" actually looks like for your project — the core features, the platforms it needs to run on, and a rough budget ceiling. From there, narrow your list to Web Development agencies in Sunnyvale whose past work matches that scope, and put each one through the same first conversation: a real problem from your project, presented cold, to see how they think rather than how they pitch. The Web Development company in Sunnyvale that asks the sharpest follow-up questions is usually the one worth a second meeting.
Enterprise-ready Web Development companies in Sunnyvale 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 Sunnyvale that hesitates on that question probably hasn't done it before.
There's no single number here — a Web Development company in Sunnyvale 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 Sunnyvale and compare the itemized breakdowns, not just the bottom-line total.
Listings for Web Development companies in Sunnyvale 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 Sunnyvale list reflects how firms are performing now, not two years ago.
A Web Development company applies for inclusion in the Sunnyvale directory by submitting a full profile — case studies, references willing to be contacted, and any relevant certifications — which our team reviews before it goes live. Once listed, staying active and collecting genuine client reviews over time is what improves visibility; a profile that's set up once and never touched again tends to fall behind.
The reputable ones treat it as non-negotiable — NDAs signed before any real discussion happens, access controls that limit who on the team can see what, and contract language that clearly transfers all IP to the client on final payment. Internal confidentiality agreements for staff are standard practice at any Web Development company in Sunnyvale worth hiring. If a firm is loose about any of this in early conversations, that's a preview of how they'll handle it once your data is actually in their systems.
A good Web Development company in Sunnyvale 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 Sunnyvale with genuine depth won't be shy about any of this.
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