Best C# Developers in the United States

7 Companies - Rankings updated: September 03, 2026

Each agency undergoes DesignRush evaluation for professional expertise and genuine client satisfaction to assist your search. Some featured placements are paid.

United States × C# Development × Energy & Mining × $25,000 - $50,000 × Clear Filters
  • Unlock Tomorrow

    GET OUR EXPERT CONSULTING AND SOFTWARE ENGINEERING SERVICES...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • Cloud Consulting
    • AI Development
    • Show more
    Location
    New York City, New York
    Number of Employees
    250 - 499
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    25 Projects Listed

    Computools Services

    • Software Development
    • Mobile App Development
    • Web Development
    • Cloud Consulting
    • AI Development
    • Staff Augmentation
    • Big Data Analytics
    • Product Design
    • Cybersecurity
    • Blockchain
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Visa
    • IBM
    • Bombardier
    • Dior
    • British Council
    • Caribbean Bank
    • MeterSnap
    • Dental Health
    • BeEducated
    • Green Energy
    Data sourced from the agency's DesignRush profile

    Computools Reviews & Testimonials

    • Marie Jenkins
      Marie Jenkins CO-Founder & Sourcing Manager at Valo Recruitment
      5.0

      Mobile App Development Review from Marie Jenkins

      Working with Computools has been a truly rewarding experience. Their team demonstrated professionalism, deep technical expertise, and strong communication throughout our project. They took the time to understand our needs and delivered a custom solution that exceeded expectations. What impressed us most was their ability to combine innovative thinking with structured execution. Computools didnt just provide software developmentthey offered valuable consulting that helped us improve efficiency and customer experience. The final product was delivered on time, met all compliance requirements, and added measurable value to our business. We highly recommend Computools to any company looking for a reliable, forward-thinking software partner.

    • Nicole Siaw
      Nicole Siaw European Hydrogen Market Analyst at Aurora Energy Research
      5.0

      Web Development Review from Nicole Siaw

      Computools developed a customized CRM system that significantly improved our financial agencys operations. Their team was highly professional, responsive, and detail-oriented throughout the process. The solution streamlined client management, boosted efficiency, and provided valuable insights for decision-making. We were impressed with their technical expertise and commitment to delivering on time.

    • Frank Tufail Smith
      Frank Tufail Smith FS Transaction Services, Manager at PwC at PwC
      5.0

      Web Development Review from Frank Tufail Smith

      We partnered with Computools to develop a new CRM system for our financial agency, and the results have been outstanding. Their team quickly understood our needs and delivered a user-friendly solution that has transformed our client management process. The CRM provides a comprehensive view of our clients, enhances our communication, and streamlines our operations. We've seen a significant improvement in response times and overall efficiency. I highly recommend Computools for any software development needs!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Trusted IT Partner for SMBs & Enterprises Since 2001 | Dedicated Teams | Industry-Specific Solutions

    Altoros is a 350+ person strong IT consulting and development group. For over 20 years, we've been assisting Global 2000 organizations in getting software products to market faster and reducing the cost of R&D experiments to enable stable business growth...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Design
    • Web Development
    • Staff Augmentation
    • Show more
    Location
    Pleasanton, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    12 Projects Listed

    Altoros Labs Services

    • Software Development
    • Mobile App Development
    • Web Design
    • Web Development
    • Staff Augmentation
    • Software Testing
    • AI Development
    • IoT
    • Cloud Consulting
    • Big Data Analytics
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Siemens
    • Toyota
    • Hitachi
    • Huawei
    • Denso
    • LikeFolio
    • Dealflo
    • iFit
    • Walmart
    • EQ Bank
    Data sourced from the agency's DesignRush profile

    Altoros Labs Reviews & Testimonials

    • Daria Stolyar
      Daria Stolyar Manager at Custom Software Development Company
      5.0

      Software Development Review from Daria Stolyar

      We hired Altoros engineers as an essential extension of our client-facing internal teams. This was a tough decision because our reputation as a brand depends on the overall efficiency of our processes and we needed to make sure all risks are mitigated when it comes to delivery. Altoros has not let us down. Together with Altorosians we successfully deployed a number of tough and technologically complex projects on time. So our collaboration is certainly set to continue.

    • Victoria Lewis
      Victoria Lewis Director at Equine Affairs Ltd
      3.5

      Software Development Review from Victoria Lewis

      We enjoy working with our team, Roman Yurkin, Tatyana Kobzar, Svetlana Kalchanka and Tatiana Anop. They bring expertise and immense value to our business with each piece of work they complete. They are a major part of our business development and delivery.

    • Greg Lipper
      Greg Lipper Managing Director at Happi Pte Ltd
      5.0

      Ruby on Rails Review from Greg Lipper

      In my 30 years in the software business, I have never had as positive an experience with an outsourced development services provider as I have with Altoros. Each Altoros engineer we have worked with has been strong technically, estimated development times accurately, completed projects on time, and delivered code and projects with high quality. Beyond that, they have helped improve our thinking and approach with suggestions and ideas that were better than the spec of instructions we supplied.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Leading Edge. Lasting Impact.

    Troy Web Consulting is a trusted guide for organizations, delivering high-quality, practical software solutionscustom web apps, mobile apps, and websiteson time and on budget. We specialize in solving business challenges through custom tailored software development...

    Top Services:

    • Software Development
    • Mobile App Development
    • eCommerce Development
    • AI Development
    • Software Testing
    • Show more
    Location
    Cohoes, New York
    Number of Employees
    Under 49
    Average Hourly Rate
    $155/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    27 Projects Listed

    Troy Web Consulting Services

    • Software Development
    • Mobile App Development
    • eCommerce Development
    • AI Development
    • Software Testing
    • Web Development
    • WordPress Website Design
    • Web Design
    • UI/UX Design
    • Design Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Advantedge Education
    • Center for Internet Security
    • Davis Vision
    • MyEssentials
    • Etransmedia
    • FortOrangePress
    • GroundWater Protection Council
    • LeadingAge
    • NYSERDA
    • The Enneagram Institute
    Data sourced from the agency's DesignRush profile

    Troy Web Consulting Reviews & Testimonials

    • Mei Huang
      Mei Huang Review from Google
      5.0

      Mei Huang's Review Sourced from Google

      I had a fantastic experience working at Troy Web Consulting. The team is incredibly supportive and welcoming. I worked on real client projects that helped me grow my technical skills and confidence. The culture is awesome, flexible, collaborative, and fun. You truly feel like part of the team from day one. Highly recommend.

    • Stephen Higgins
      Stephen Higgins Review from Google
      5.0

      Stephen Higgins's Review Sourced from Google

      My relationship with Troy Web Consulting began in 2019, and I am very proud to say it still continues. Their experience and expertise is second to none, and their incredible customer service makes communication between you and your project manager and the team something you look forward to. It has truly been an enjoyable experience growing my company with the help and abilities of such a great group. A special thanks goes out to Anthony and Mark, two of the best to work with.

    • Caring Gene
      Caring Gene Review from Google
      5.0

      Caring Gene's Review Sourced from Google

      Troy Web took over the maintenance and service contract for our in depth healthcare career information and job posting website. Their ability to seamlessly take ownership, clean up and bring our site into a stable wordpress environment was done not only quickly, but also flawlessly. During our time with Troy Web, a number of updates and additional features were required to be built. They were not only able to build these aspects, but also to correct past build issues in the process making the site more reliable on a daily basis. In the last 6 months of their service we didn’t experience any unforeseen downtime with our website, which is extremely important to the function of our site for those that access and use it on a daily basis. Troy Web provides an exceptional service with a team that is always available and very knowledgeable.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Your Vision Your Rules Your Win

    JetBase helps startups and enterprises transform bold ideas into scalable digital products. From MVPs to SaaS platforms, we build software that drives growth, strengthens retention, and delivers measurable business impact with clarity, speed, and long-term value...

    Top Services:

    • Software Development
    • eCommerce Development
    • Mobile App Development
    • Web Development
    • DevOps Consulting
    • Show more
    Location
    Sheridan, Wyoming
    Number of Employees
    Under 49
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    9 Projects Listed

    JetBase Services

    • Software Development
    • eCommerce Development
    • Mobile App Development
    • Web Development
    • DevOps Consulting
    • UI/UX Design
    • Web Design
    • AI Development
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Energex
    • Quran Pro
    • Grapevine
    • Athan Pro
    Data sourced from the agency's DesignRush profile
  • Your Vision, Our Experts with Portal & Mobile Framework, Powerful Results!

    Why build from scratch! Our Portal, Mobile and AI framework provides 30-40% increased time to market. Built with Enterprise Security/Compliance for Azure/AWS clouds. ContentActive (Houston) provides Strategy, UI/UX, Web/Mobile/AI/Automation/IoT & DevOps. Your Vision, Our Experts, Powerful Results!...

    Top Services:

    • Software Development
    • Mobile App Development
    • AI Development
    • DevOps Consulting
    • Web Development
    • Show more
    Location
    Houston, Texas
    Number of Employees
    Under 49
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    4 Projects Listed

    ContentActive, LLC Services

    • Software Development
    • Mobile App Development
    • AI Development
    • DevOps Consulting
    • Web Development
    • IoT
    • Big Data Analytics
    • ERP Consulting
    • UI/UX Design
    • Digital Strategy
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • AEI Energy
    • Abitibi-Consolidated
    • American Medical Writers Association
    Data sourced from the agency's DesignRush profile
  • Accelone Advancing What's Possible

    Embark on your digital transformation journey with AccelOne's Software Development delivery model, strategically designed for optimal outcomes. Initiate your digital transformation seamlessly through our comprehensive nearshore and US-based services...

    Top Services:

    • Software Development
    • Mobile App Development
    • Blockchain
    • UI/UX Design
    • eCommerce Development
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    100 - 249
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    5 Projects Listed

    AccelOne Services

    • Software Development
    • Mobile App Development
    • Blockchain
    • UI/UX Design
    • eCommerce Development
    • Web Development
    • AI Development
    • Staff Augmentation
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • HSBC
    • Xapo
    • University of Washington
    • Pan American Energy SL
    • Cartoon Network
    Data sourced from the agency's DesignRush profile

    AccelOne Reviews & Testimonials

    • Gustavo Lemos
      Gustavo Lemos Review from Google
      5.0

      Gustavo Lemos's Review Sourced from Google

      I've been working in AccelOne for several years already and it's an amazing place to work. Great people and a good variety of clients.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • AI & Automation Partner for Mid-Market Businesses

    Frogslayer is the custom software, AI, and automation partner for mid-market businesses in Texas. We work as a senior team on retainer AI consulting, strategy, automation, development, and implementation. Plans start at $2,500/month...

    Top Services:

    • Software Development
    • Mobile App Development
    Location
    College Station, Texas
    Number of Employees
    50 - 99
    Minimal Budget
    $25,000 - $50,000

    Frogslayer Services

    • Software Development
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • NCR
    • Wrigley
    • Texas A&M University
    • Microsoft
    • National Instruments
    • Lupl
    • Dunkin Donuts
    • AOPA
    • K2 Integrity
    • Schlumberger
    Data sourced from the agency's DesignRush profile

    Frogslayer Reviews & Testimonials

    • May Halpirn
      May Halpirn Review from Google
      1.0

      May Halpirn's Review Sourced from Google

      Curious about another reviewer who looked older, a job applicant, who didn't have his call returned. Frogslayer slung cliche pablum his way. Apparently they hire Jr. Devs but do they hire over a certain age? Do they know the law? Their Senior Dev is under 30 and was hired from being a student employee. Curious and curiouser. Maybe Frogslayer isn't as woke as they appear. Friend of mine went through the ringer with them was told they'd get feedback either way. Instead they got the standard blow off rejection after devoting way too much time on a company that might not value "employees over a certain age." Heads up Frogslayer. There are laws.

    • Jared L
      Jared L Review from Google
      3.0

      Jared L's Review Sourced from Google

      one of the only companies in town actively seeking real beginners/students to become junior level developers using all stacks and not focused on a particular one but most importantly not stuck with legacy tech debt.

    • Heath Phillips
      Heath Phillips Review from Google
      5.0

      Heath Phillips's Review Sourced from Google

      These guys are incredible at what they do. They helped me design a custom software that fit all of my companies needs. The time they spend understanding what my goals were was incredible. They also made tons of suggestions to control the cost. Highly recommend this team!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews

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