Best C# Developers in the United States

6 Companies-Rankings updated: September 03, 2026

DesignRush assesses agencies using expertise standards and verified client experiences to help you make better decisions. Certain agencies have paid placements.

United States × C# Development × NFT × $10,000 - $25,000 ×Clear Filters
  • Your AI-powered Engineering Partner

    Our passion drives us to deliver as a full-service software development company, guiding global enterprises through digital transformation. Exceptional attention to detail distinguishes our handling of AI-driven solutions, data analytics, and enterprise automation for measurable results...

    Top Services:

    • Software Development
    • Web Development
    • Mobile App Development
    • Big Data Analytics
    • eCommerce Development
    • Show more
    Location
    Potomac, Maryland
    Number of Employees
    250 - 499
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    69 Projects Listed

    Instinctools Services

    • Software Development
    • Web Development
    • Mobile App Development
    • Big Data Analytics
    • eCommerce Development
    • Product Design
    • AI Development
    • IT Services
    • ERP Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Swiss Red Cross
    • SAP
    • FUJITSU
    • BURDA DIGITAL
    • DAIMLER
    • VoxGen
    • Acrolinx
    • trimet
    • darwinapps
    • AT Consulting
    Data sourced from the agency's DesignRush profile

    Instinctools Reviews & Testimonials

    • Undisclosed
      Undisclosed Manager ITM/PSE - Procurement Systems Daimler AG at Daimler
      5.0

      Software Development Review from Undisclosed

      Daimler's new Global Buying System, GLOBUS, now features proficient web-based assistance and user support. The client opted for Instinctools' forward-thinking solution that catered to its requirements, especially in multilingual content, adaptability, and scalability. (Verified via email)

    • Edward Rimon
      Edward Rimon Product and Customer Experience Director at Retail company
      5.0

      Software Development Review from Edward Rimon

      The client hadn't realized how much of its data went unused, with nearly 90% of decisions made on barely half the data. But with Instinctools' business intelligence expertise and proactive approach, the client now makes decisions with greater confidence, drawing from a more comprehensive data set and quickly addressing new challenges. All tasks, and more, were efficiently handled by a tech-skilled and proactive team. (Verified via email)

    • Dr. Jonas Block
      Dr. Jonas Block Product Owner at Ipwe
      5.0

      Software Development Review from Dr. Jonas Block

      Instinctools' has the professionalism and flexibility that young companies need. Ipwe trusts the agency's tested workflow that integrates well with internal processes. The ability to quickly add experienced and valuable professionals without prolonged interviews is a major plus. Moreover, this team is full of interesting and kind people. (Verified via email)

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Website & application development

    Promodex is your long-term digital partner. We deliver UI/UX design, front/back-end development, marketing (SEO, SMM, PPC), support, automation, and custom CRM/ERP solutions. 12+ years of experience. Need a turnkey solution? Lets talk!...

    Top Services:

    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • Web Design
    • Mobile App Development
    • Show more
    Location
    Cheyenne, Wyoming
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    20 Projects Listed

    Promodex Services

    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • Web Design
    • Mobile App Development
    • SEO
    • UI/UX Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Fleet Care
    • IT rating LTD
    • DVL Express
    • IT-Rating.com Inc.
    • ElmiraMedins S.L.
    • Unibox
    • SKY LINE RESORT DOO
    • SERVIRED SP. Z.O.O
    • PureMaids Inc.
    • Expertyco Sp.z o.o
    Data sourced from the agency's DesignRush profile

    Promodex Reviews & Testimonials

    • Oleksii Shapran
      Oleksii Shapran CEO at PioGroup
      5.0

      Web Development Review from Oleksii Shapran

      To create an online store that fully meets the needs of our business, we turned to Promodex. The main focus was on developing a modern and user-friendly design, creating intuitive functionality, as well as API development and AI implementation.A modern online store was created with a unique design, API integration, the introduction of artificial intelligence for personalization, optimization of all processes and ensuring stable operation, which led to increased efficiency of online sales and improved user experience.

    • Sergei Kolozenko
      Sergei Kolozenko CEO at Megasite
      5.0

      Web Development Review from Sergei Kolozenko

      We have been working with this company for a year and a half on internal projects of our company. During the entire period of work, there were no problems with the quality of work or with the timing of work. The assigned tasks are performed in accordance with the contract. Promodex has established itself as a proven and reliable contractor in the field of development and technical support of websites on cms opencart and wordpress.

    • Valeriia Donetskova
      Valeriia Donetskova Marketing Specialist at Inweb
      5.0

      Web Development Review from Valeriia Donetskova

      I am very pleased with the result of the work of the Promodex team on the development of our corporate website based on the Laravel framework. The development process was very efficient and professional. The team demonstrated in-depth knowledge and experience in working with Laravel, which allowed us to create a website with high performance, reliability and security.I would especially like to note the individual approach to our project and the willingness to take into account all our wishes and requirements. The developers were always in touch, promptly responded to our requests and listened attentively to our suggestions. Thanks to this, the cooperation process was as comfortable and effective as possible.The result of the work exceeded our expectations. We have received a high-quality, modern and functional website that perfectly meets our business needs. Many thanks to the Promodex team for their professionalism, creativity and high level of service. I recommend this company to anyone who is looking for a reliable partner for developing web projects based on the Laravel framework.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Creating Stunning Web and Mobile Apps

    Cleveroad is a leading provider of web and mobile solutions that cater to diverse industries and budgets. With a global team of skilled IT professionals and expertise earned from developing 500+ custom apps, we offer end-to-end development services, UI/UX design, cloud-based solutions, and advanced...

    Top Services:

    • Software Development
    • Staff Augmentation
    • IoT
    • IT Services
    • Mobile App Development
    • Show more
    Location
    Claymont, Delaware
    Number of Employees
    50 - 99
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    12 Projects Listed

    Cleveroad Services

    • Software Development
    • Staff Augmentation
    • IoT
    • IT Services
    • Mobile App Development
    • Web Development
    • ERP Consulting
    • Web Design
    • AI Development
    • Cloud Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • OpenMind
    • Cartogram
    • DPD
    • VirginAtlantic
    • Money Wiz
    • HSBC
    • Octopus Investments
    • BET3000
    Data sourced from the agency's DesignRush profile

    Cleveroad Reviews & Testimonials

    • Thomas Day
      Thomas Day Review from Google
      5.0

      Thomas Day's Review Sourced from Google

      We engaged with Cleveroad to develop a custom application that we use to support our customer events. From the beginning, the Cleveroad team worked as true partners to understand our needs and outcomes of the product. They worked in a predictable cadence and were a welcome extension of my team. I would highly recommend Cleveroad to anyone looking trusted software development partner.

    • Matt Needleman
      Matt Needleman Review from Google
      5.0

      Matt Needleman's Review Sourced from Google

      I have worked with Cleveroad for several years now. They helped me launch an App from scratch and I could not be happier with the results. They worked hard to understand and execute my vision and are incredibly responsive to customer needs. I highly recommend anyone needing App development to work with them.

    • Camila Romero
      Camila Romero Review from Google
      5.0

      Camila Romero's Review Sourced from Google

      Cleveroad's team is professional, responsive, and highly skilled. We've had a seamless experience collaborating with them. Their structured workflow and attention to detail make them a trusted development partner. Highly recommend!-Pagato team.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • We Build Games That Players Love.

    Double Coconut is a San Franciscobased boutique game development studio founded in 2012. The agency specializes in full-service game design and co-developmentfrom casual mobile and web titles to casino, mid-core, and Web3 games. Their projects have reached over 5 million players and generated...

    Top Services:

    • Software Development
    • Web Design
    • Mobile App Development
    • Blockchain
    • Show more
    Location
    San Francisco, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    8 Projects Listed

    Double Coconut Services

    • Software Development
    • Web Design
    • Mobile App Development
    • Blockchain
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Microsoft
    • WB
    • Cartoon Network
    • Ellen Degeneres
    • MIT
    • IBM
    • SAP
    • iWin
    • Addicting Games
    • Penn Gaming
    Data sourced from the agency's DesignRush profile
  • Design! Develop! Decentralize!

    Blocktunix distinguishes itself as a leading blockchain development company, recognized for its excellence in the field. Our team of highly skilled and adept blockchain developers ensures the consistent delivery of robust and dependable blockchain solutions...

    Top Services:

    • Blockchain
    • AI Development
    • Software Development
    • Mobile App Development
    • IoT
    • Show more
    Location
    New York City, New York
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    8 Projects Listed

    Blocktunix Services

    • Blockchain
    • AI Development
    • Software Development
    • Mobile App Development
    • IoT
    • VR/AR
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Blockestate
    • Celloux
    • APZ-Sign
    • Beacon Boxx
    Data sourced from the agency's DesignRush profile

    Blocktunix Reviews & Testimonials

    • ammy ammy
      ammy ammy Review from Google
      5.0

      ammy ammy's Review Sourced from Google

      I had an outstanding experience as a client of Blocktunix. Their expertise in developing on the Stellar blockchain was evident from the start, with clear and transparent communication throughout the project. The team's technical skills delivered robust and secure solutions, making the integration process smooth. Their commitment to customer satisfaction and exceptional support set them apart in the blockchain development space. I highly recommend blocktunix to anyone seeking top-quality blockchain solutions.

    • rajeev dh
      rajeev dh Review from Google
      5.0

      rajeev dh's Review Sourced from Google

      I had the pleasure of working with Blocktunix, and I must say they are a phenomenal blockchain development company. Their expertise in the field is truly commendable. From the outset, their team demonstrated a deep understanding of blockchain technology and its potential for revolutionizing businesses.Blocktunix exceeded all my expectations by delivering a custom blockchain solution tailored precisely to our unique business requirements. Their approach to problem-solving was meticulous, and they took the time to understand our specific needs, resulting in a seamless and efficient solution.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Empowering Businesses Through AI- Driven Digital Transformation

    Brightter is a global AI-driven digital transformation company based in San Francisco. We have partnered with forward-thinking businesses for over a decade to create exceptional digital experiences. Our expertise spans AI transformation, brand strategy, website development, web applications, and search engine...

    Top Services:

    • Digital Services
    • Graphic Design
    • Branding
    • Digital Strategy
    • Web Design
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $120/hr
    Minimal Budget
    $10,000 - $25,000

    Brightter Inc. Services

    • Digital Services
    • Graphic Design
    • Branding
    • Digital Strategy
    • Web Design
    • Web Development
    • WordPress Website Design
    • SEO
    • Mobile App Development
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Chase
    • Oracle
    • Opswat
    • Novoed
    • REI Corp
    • Sephora
    • Wells Fargo
    • Mckesson
    • Ikea
    • The Coca-Cola Company
    Data sourced from the agency's DesignRush profile

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