Best C# Developers in the United States

9 Companies-Rankings updated: September 03, 2026

We evaluate every agency on DesignRush according to expertise credentials and client satisfaction ratings. Some placements are sponsored.

United States × C# Development × Publishing ×Clear Filters
  • Software Outsourcing & Development | 500+ Active Clients

    Founded in 2009 by Nacho de Marco and Paul Azorín, BairesDev provides top 1% tech talent to a range of clients, from startups to Fortune 500 companies...

    Top Services:

    • Software Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Software Testing
    • Show more
    Location
    San Francisco, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    5 Projects Listed

    BairesDev Services

    • Software Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Software Testing
    • Web Design
    • Staff Augmentation
    • Product Design
    • ERP Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Google
    • Salesforce
    • IBM
    • Autodesk
    • Rolls-Royce
    • SiriuXM
    • Motorola
    • Burger King
    • Chime
    Data sourced from the agency's DesignRush profile

    BairesDev Reviews & Testimonials

    • Undisclosed
      Undisclosed Director of e-commerce solutions at URBN
      5.0

      Web Development Review from Undisclosed

      We were truly impressed by the BairesDev team's expertise, work ethic, and eagerness to learn. The agency quickly adapted to our corporate culture and integrated seamlessly. When tasked to work on a new platform, it provided solutions within a week. It's like the software version of a versatile and powerful utility infielder.

    • Undisclosed
      Undisclosed Engineering Manager at Pinterest
      5.0

      Staff Augmentation Review from Undisclosed

      BairesDev engineers are the soul of the team. They’re able to identify dependencies and figure out solutions quickly. They strongly exceeded my expectations.

    • Undisclosed
      Undisclosed Team Leader at Avigilon
      5.0

      Web Development Review from Undisclosed

      Following consultations with the BairesDev team, we recognized that the primary objective was to localize the system and concentrate on enhancing the UI, while also upgrading tools to uphold a high-performance analytics system. Witnessing its expertise and ability to address specific issues greatly alleviated our security platform's primary concerns.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Driving Change Through Technology - Apps, Ecommerce, Staff Aug, BPO, Next Gen Tech and more!

    Working with Trango Tech means you access a team of 200+ seasoned experts delivering transformative Software Development solutions—custom platforms, mobile apps, and enterprise systems. Clients trust our innovative approach to digital product engineering and seamless technology integration...

    Top Services:

    • Software Development
    • Mobile App Development
    • eCommerce Development
    • AI Development
    • Web Design
    • Show more
    Location
    San Jose, California
    Number of Employees
    100 - 249
    Portfolios Count
    17 Projects Listed

    Trango Tech Services

    • Software Development
    • Mobile App Development
    • eCommerce Development
    • AI Development
    • Web Design
    • CRM Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Khaity
    • Shifaam
    • KIA
    • Click N Kollect
    • Helpp
    • Matchbox
    • OAKS
    Data sourced from the agency's DesignRush profile

    Trango Tech Reviews & Testimonials

    • Ashleigh J. Shim
      Ashleigh J. Shim Founder at Barefoot Player
      5.0

      Mobile App Development Review from Ashleigh J. Shim

      Jane Miller and her team at Trango Tech have been phenomenal. They design a detailed and curated plan for your app design and development. I liked that Jane always made herself available to ensure the success of our company's app. Thank you Jane!

    • Fren D. Garcia
      Fren D. Garcia Procurement Manager at ClicknCollect
      4.8

      Mobile App Development Review from Fren D. Garcia

      Had a fantastic experience working with Trango Tech for our eCom & app development needs. Their expertise in creating scalable and customized online stores was evident from the beginning. They provided valuable insights and suggestions that significantly improved my website's functionality and user experience. The Trango Tech team was responsive, communicative, and dedicated to meeting our specific needs. I'm thrilled with the end result and would highly recommend Trango Tech to anyone.

    • David V. Ringer
      David V. Ringer Marketing Manager at Helpp
      4.8

      Mobile App Development Review from David V. Ringer

      The team at Trango Tech was very communicative and kept me informed throughout the entire development process. They provided regular updates on the progress of the project and were always available to answer any questions I had. They were very patient with my requests and made sure that my requirements were met to my satisfaction.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Custom Software Development

    NIX is a global software engineering company with over 3,000 professionals, delivering solutions that help everyone from SMBs to large enterprises scale, streamline operations, and achieve measurable results...

    Top Services:

    • Software Development
    • Staff Augmentation
    • AI Development
    • Cloud Consulting
    • Cybersecurity
    • Show more
    Location
    Tampa, Florida
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    8 Projects Listed

    NIX Services

    • Software Development
    • Staff Augmentation
    • AI Development
    • Cloud Consulting
    • Cybersecurity
    • Big Data Analytics
    • eCommerce Development
    • Managed Services
    • IT Services
    • IT Compliance Solution
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Verify
    • ALIENWARE
    • Cengage
    • Thomson Reuters
    • Blueprism
    Data sourced from the agency's DesignRush profile

    NIX Reviews & Testimonials

    • Menno Fink
      Menno Fink Review from Google
      5.0

      Menno Fink's Review Sourced from Google

      I’m an independent web professional, working closely with a small network of fellow freelancers to deliver web projects.For well over a decade, I’ve relied on Nix United as a key technical partner across a wide range of projects. From complex custom solutions to smaller development tasks. They consistently deliver high-quality work. Fast, reliable and they are a always a pleasure to collaborate with.What sets them apart is their ability to think alongside you, their professional and efficient approach, and their broad technical skill set. Whether it’s backend development, front-end, infrastructure, or UX. They’re able to handle it all.What I value most is that I can truly rely on them. They’re not just highly skilled developers, they’re a partner I can build on. This allows me to serve my own clients better, knowing that I have a solid technical team to fall back on whenever needed. I wouldn't have been able to take on certain projects without Nix's support.They’re proactive, professional, and always a pleasure to communicate with. I’ve had countless moments where they stepped in quickly when time was critical.Working with them brings peace of mind. I worry less because I know they're by my side. If you’re looking for a dependable, capable, and genuinely human team to support your development needs, I highly recommend Nix United.Communication is always smooth, friendly, and proactive. They truly feel like an extension of my own team. Highly recommended.

    • Andriy Sydorenko
      Andriy Sydorenko Review from Google
      5.0

      Andriy Sydorenko's Review Sourced from Google

      We had a truly pleasant experience interacting with the NIX team.We worked together on the development of the Resilience Hub psychological support platform.We are grateful to the team for their flexibility, professionalism, and adherence to deadlines.We would like to separately note the quality of communication, reliable technical support, and quick response to all requests.We are pleased with the results of our cooperation!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • CMS 2.0 SEO, Speed & Security BakedIN

    You spend time imagining how you can more effectively use online technology to improve your business! Hello, I am Mary Putnam and I spend my time commanding digital technology to accomplish your goals with dynamic websites, cloud based applications, and digital strategy...

    Top Services:

    • Digital Marketing
    • Web Development
    • Mobile App Development
    • Web Design
    • SEO
    • Show more
    Location
    Tulsa, Oklahoma
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed

    Design Your Site Services

    • Digital Marketing
    • Web Development
    • Mobile App Development
    • Web Design
    • SEO
    • Digital Strategy
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Memberhaven
    • WL Walker
    • John 3:16 Mission
    Data sourced from the agency's DesignRush profile

    Design Your Site Reviews & Testimonials

    • Lynn Ezell
      Lynn Ezell Managing Member at SRI Energy
      5.0

      Web Design Review from Lynn Ezell

      Design Your Site has done a remarkable job managing our SEO and providing website development and enhancement. They also manage our e-mails. I have found them to be very knowledgable and in pace with current technology and optimization requirements. If we have any questions or concerns, they are very quick to respond, explain, and resolve, if needed. We are very happy with the service and products.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • The right team changes everything. We're that team for you!

    ON TIME, ON BUDGET ... SOLUTIONS EXCEEDING EXPECTATION.Professional Development You Can Trust...

    Top Services:

    • Mobile App Development
    • eCommerce Development
    • Web Development
    • Web Design
    • UI/UX Design
    • Show more
    Location
    Scottsdale, Arizona
    Number of Employees
    Under 49
    Portfolios Count
    12 Projects Listed

    Dot Com Development Services

    • Mobile App Development
    • eCommerce Development
    • Web Development
    • Web Design
    • UI/UX Design
    • AI Development
    • Big Data Analytics
    • WordPress Website Design
    • DevOps Consulting
    • ERP Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Digicel Group Ltd
    • Salt River Materials Group
    • Elevation Marketing
    • Arizona Kidney Disease and Hypertension Centers
    • Imagine Backyard Living
    • Flora and More
    • Paragon Vision Sciences
    • momAgenda
    • Storm Bowling
    • AutoWeek
    Data sourced from the agency's DesignRush profile
  • The Best Way To Build Your Software.

    Our focus is on providing businesses with the tools they need to reach their maximum potential through the use of our cutting-edge software solutions. Launch your product to market 2x faster with Techjay's strong business domain experience, technical expertise, extensive knowledge of the latest industry...

    Top Services:

    • Software Testing
    • Software Development
    • Mobile App Development
    • Web Development
    • UI/UX Design
    • Show more
    Location
    Menlo Park, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $28/hr
    Minimal Budget
    $10,000 - $25,000

    Techjays Services

    • Software Testing
    • Software Development
    • Mobile App Development
    • Web Development
    • UI/UX Design
    • HR Outsourcing
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Shipdude
    • Fayvit
    • CloudNine
    • Vidhire
    • Nakkheeran
    • Xtra Curriculum
    • SliverBack
    • CoSell
    Data sourced from the agency's DesignRush profile

    Techjays Reviews & Testimonials

    • Larry Miller
      Larry Miller Review from Google
      5.0

      Larry Miller's Review Sourced from Google

      I've used Tech Jays for several projects, I love their work and love working with the team!

    • Corbin Miller
      Corbin Miller Review from Google
      5.0

      Corbin Miller's Review Sourced from Google

      I've been working with Techjays since they started and have never been disappointed. On each project I have worked with them they have always delivered on time, on budget and with great quality. They adapt to the needs of the customer and have been in large part, more of a technical co-founder for my start ups. I'll continue to work with them and highly recommend them to anyone!

    • Jonathan Rodriguez
      Jonathan Rodriguez Review from Google
      5.0

      Jonathan Rodriguez's Review Sourced from Google

      We've been working with TechJays the past 18+ months and the outsource experience has been great. They are agile and compared to previous outsource experiences, their competence, quality, and delivery punches above the rest.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Results driven digital marketing agency.

    OBCIDO Inc. is a global consulting and digital services firm founded in New York in 2021. We help businesses redefine their digital identity and accelerate growth through strategic consulting, AI solutions, GEO, high-performance websites, and results-driven digital marketing...

    Top Services:

    • Digital Services
    • Branding
    • Digital Strategy
    • Web Design
    • Web Development
    • Show more
    Location
    New York City, New York
    Number of Employees
    Under 49
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed

    OBCIDO Inc. Services

    • Digital Services
    • Branding
    • Digital Strategy
    • Web Design
    • Web Development
    • WordPress Website Design
    • PPC
    • Social Media Marketing
    • Media Buying
    • Digital Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Academic Partnerships
    • U.S. Small Business Administration
    • Library of Congress
    • Duggal Visual Solutions
    • Decibel Events
    • Lebanese American University
    • The New York Times
    • XM
    • Lucinda Loya Interiors
    • Holberton New York
    Data sourced from the agency's DesignRush profile

    OBCIDO Inc. Reviews & Testimonials

    • Monty
      Monty Review from Google
      5.0

      Monty's Review Sourced from Google

      I’ve been working with OBCIDO for social media and ads support for my business, and I couldn’t be happier with the results. Their team is proactive, creative, and genuinely understands how to drive engagement and conversions. They’ve helped streamline my campaigns, improve content strategy, and get my brand in front of the right audience. Communication is always clear and responsive, and I feel like they truly care about my business’s success. Highly recommend OBCIDO to any business owner looking to take their digital presence to the next level! Thank you

    • Ary Satish
      Ary Satish Review from Google
      5.0

      Ary Satish's Review Sourced from Google

      I had a great experience working with the OBCIDO team. Communication was clear from the beginning and their services were explained well beforehand, so I knew exactly what was offered. They stuck all deadlines and responded promptly to any emails or questions. Their selected writer/editor - Amr - who worked with me throughout the PR process, was the great selection by OBCIDO for my work with them. I would be happy to recommend them to more colleagues and artists in my community.

    • graziella Abou Jaoudeh
      graziella Abou Jaoudeh Review from Google
      5.0

      graziella Abou Jaoudeh's Review Sourced from Google

      Working with this digital agency has been nothing short of extraordinary. They genuinely feel like an integral part of our team, consistently delivering unbelievable service, flawless execution, and outstanding results. After years of collaboration, I can confidently say I've never encountered a more dedicated group of professionals. Their commitment to driving positive outcomes is unmatched, and their passion shines through in every project. If you're looking for a partner that goes above and beyond, this agency is the one to trust. Highly recommended!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Transforming Ideas Into Digital Masterpieces

    Our business, LOGOMISH, started out of a passion for helping small businesses thrive in the digital age. As entrepreneurs ourselves, we understand the challenges and obstacles that small business owners face, and we wanted to provide affordable and effective solutions to help them succeed...

    Top Services:

    • Logo Design
    • Web Design
    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • Show more
    Location
    Miami, Florida
    Number of Employees
    100 - 249
    Average Hourly Rate
    $20/hr
    Portfolios Count
    1 Project Listed

    Logomish LLC Services

    • Logo Design
    • Web Design
    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • Mobile App Development
    • Social Media Marketing
    • SEO
    • CRM Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Tech Academy
    • Home Service
    • Fauget
    Data sourced from the agency's DesignRush profile

    Logomish LLC Reviews & Testimonials

    • Phil Biggs
      Phil Biggs Review from Google
      5.0

      Phil Biggs's Review Sourced from Google

      Sophia Clark is an absolute creative powerhouse! She didn’t just design my social media posts—she exceeded every expectation I had. Her attention to detail, creativity, and ability to perfectly capture the essence of my brand blew me away. If you’re looking for someone who will truly elevate your social media presence, look no further. Thank you, Sophia, for your amazing work! I highly recommend her to anyone looking to take their visuals to the next level. You won’t be disappointed!Coach Phil

    • Helen Vasquez
      Helen Vasquez Review from Google
      5.0

      Helen Vasquez's Review Sourced from Google

      Two days is all they took to CREATE a design for my logo and my business cards. Exceptional work, easy to understand and communicate with them, they provide recommendations based on your business needs and they deliver the product timely. No delays, no bots, no waiting period to hear back from them, no worries. Trust em, they are professionals and they are beyond passionate. They don’t just do the job, they partner with you to deliver an exceptional product. Special thanks to Jonathan, he was my dedicated account manager, he was an exceptional communicator and his team was very creative indeed. Thank you J ☺️

    • simeon quick
      simeon quick Review from Google
      5.0

      simeon quick's Review Sourced from Google

      It was certainly a delight work with Hazel and John with my logo/decal needs, I was pleasantly suprised at their professionalism from start to finish. I don’t usually leave reviews, but these two had my back all the way. I definitely will be following tons of more business with this company because of the excellent work and commitment I received to keep me happy as a customer. I hope this company continues to serve the people I the way they inspire to!!! Great job Logomish!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Let Your Next Idea Take Flight

    Wise Raven Consulting is a web design and digital marketing firm helping businesses of all sizesacross industries like tech, startups, authors, and professional servicesbuild strong online presences. We specialize in custom websites, SEO, and strategic digital campaigns, and also offer fractional project...

    Top Services:

    • Web Design
    • Web Development
    • WordPress Website Design
    • SEO
    • PPC
    • Show more
    Location
    Wilmington, North Carolina
    Number of Employees
    Under 49
    Minimal Budget
    $1,000 - $10,000

    Wise Raven Consulting Services

    • Web Design
    • Web Development
    • WordPress Website Design
    • SEO
    • PPC
    • Logo Design
    • Digital Marketing
    • Software Development
    • Business Consulting
    • Email Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Collins & Collins Law Offices
    • Inner Glow Lash Studio
    • Boardworks Education
    • Paula Vargas Realtor
    • Writer's Hive Media
    • Whitewood Packaging
    • White Heron Retreat
    Data sourced from the agency's DesignRush profile

    Wise Raven Consulting Reviews & Testimonials

    • Avery Wilson
      Avery Wilson Review from Google
      5.0

      Avery Wilson's Review Sourced from Google

      Wise Raven Consulting did a wonderful job bringing our vision to life. Mel's communication in the website planning, designing, and execution process was prompt and thorough. We are thrilled with our new website, and recommend Wise Raven Consulting for all website needs.

    • Andrea Cruz
      Andrea Cruz Review from Google
      5.0

      Andrea Cruz's Review Sourced from Google

      Working with my Mel has been one of the best decisions I’ve made for my business. He built a beautiful, professional website that truly represents my brand, and he didn’t stop there, he also manages my SEO and Google Ads. Thanks to him, I’ve seen a huge increase in traffic and bookings. My business has grown so much, and I’m now fully booked most of the time. He handles everything behind the scenes so I can focus on my clients. I highly recommend him to any business owner who wants real results. You won’t regret it!

    • James Taylor
      James Taylor Review from Google
      5.0

      James Taylor's Review Sourced from Google

      Our young non-profit was ready for a website overhaul, and Wise Raven Consulting came to the rescue! Mel was absolutely AMAZING to work with. In addition to being so kind and collaborative, he helped bring our vision to life and offered so many helpful recommendations throughout the entire process. I can't recommend Mel and Wise Raven Consulting enough!

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

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