Best C# Developers in the United States

2 Companies - Rankings updated: September 03, 2026

DesignRush vets all agencies based on professional qualifications and verified customer feedback to help you choose confidently. Some featured agencies maintain paid sponsorships.

United States × C# Development × Nonprofit × $50,000 & Up × Clear Filters
  • Succeed Faster With Syberry.

    We've delivered 300+ software solutions for American companies of all sizes, from emerging startups to Fortune 200 companies in many domains: healthcare, FinTech, automotive, energy management, real estate, education, e-commerce, and others...

    Top Services:

    • Software Development
    • Mobile App Development
    • DevOps Consulting
    • AI Development
    • Show more
    Location
    Austin, Texas
    Number of Employees
    250 - 499
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    12 Projects Listed

    Syberry Corporation Services

    • Software Development
    • Mobile App Development
    • DevOps Consulting
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • PayPal
    • Shell
    • JLL
    • THG Energy Solutions
    • FTSE Russel. London Stock exchange
    • Livestream
    • Telespace
    • Baylor Scott and White Healthcare
    • Ethisphere
    Data sourced from the agency's DesignRush profile

    Syberry Corporation Reviews & Testimonials

    • John Fox
      John Fox Solution Architect / Project Owner at Formulary Insights
      5.0

      Software Development Review from John Fox

      Syberry Corporation handles several projects for the client; always aligning with the set design criteria. Every output from it not only meets but surpasses the client's expectations and works flawlessly upon launch. The team at Syberry is adept at managing numerous projects simultaneously and showcases profound knowledge in software development. Its unwavering commitment has consistently contributed to the ongoing success of the collaboration. (Verified via email)

    • Rudy Milković
      Rudy Milković Executive Director / Founder at Velikom International
      4.8

      Software Development Review from Rudy Milković

      The final product surpassed the client's expectations. Syberry Corporation consistently offered top-notch results promptly and at an excellent value. It kept the client informed regularly and continually asked for input at every phase. Clients can anticipate a seasoned team from Syberry Corporation that adeptly turns ideas into practical solutions. (Verified via email)

    • Andrew Stanifer
      Andrew Stanifer Review from Google
      5.0

      Andrew Stanifer's Review Sourced from Google

      I cannot say enough good things about Syberry and the experience I had with them! The entire team was extremely customer focused and incredible to work with. They will without out a doubt be our continued partner and go-to for any future software development!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Marketing that advances your social impact and the common good.

    HelpGood is a full-service marketing and communications agency focused on social impact. Our clients are nonprofits, foundations, universities, government agencies, and purpose-driven organizations. HelpGood's offices are in Los Angeles and NYC. We are a certified B Corp...

    Top Services:

    • Web Design
    • Digital Marketing
    • Web Development
    • Branding
    • Show more
    Location
    New York City, New York
    Number of Employees
    Under 49
    Average Hourly Rate
    $175/hr
    Minimal Budget
    $50,000 & Up

    HelpGood Services

    • Web Design
    • Digital Marketing
    • Web Development
    • Branding
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Ad Council
    • Smokey Bear
    • FPWA
    • NEXT for AUTISM
    • Planned Parenthood of NYC
    • Fountain House
    • Native American Heritage Commission
    • National Forest Foundation
    Data sourced from the agency's DesignRush profile

Receive Free Proposals

For your project

1

Specify your budget, timeline and project requirements

2

Our experts curate a list of up to 5 most qualified candidate agencies

3

We connect you with them so you can choose the most suitable partner