Best C# Developers in the United States

6 Companies-Rankings updated: October 19, 2026

Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

United States × C# Development × Hardware & Networking × $10,000 - $25,000 ×Clear Filters
  • AI-ready Senior Engineers and Dedicated Teams in ~60 hours

    Founder-led IT staff augmentation for small-mid companies. We solve problems you haven't fully scoped yet...

    Top Services:

    • eCommerce Development
    • Software Testing
    • AI Development
    • Mobile App Development
    • Software Development
    • Show more
    Location
    New York City, New York
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed

    UASOFTDEV Services

    • eCommerce Development
    • Software Testing
    • AI Development
    • Mobile App Development
    • Software Development
    • VR/AR
    • Blockchain
    • Staff Augmentation
    • DevOps Consulting
    • WordPress Website Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Dwelly
    • Managed IT Experts
    • Hazy
    Data sourced from the agency's DesignRush profile

    UASOFTDEV Reviews & Testimonials

    • Slava Kostiuk
      Slava Kostiuk Full-Stack (Python, Node.js, React) Developer and Flutter+Java+AI+AR Developer at UDS Systems
      5.0★

      Software Development Review from Slava Kostiuk

      We initially approached UASOFTDEV with a relatively straightforward request: a WordPress website and a Senior React/Node/Python Developer for backend and API development. What impressed us immediately was how quickly they understood our needs and delivered relevant candidates. We received the first 5 candidates within 60 hours, exactly as promised. The developers were skilled, experienced, and cost-efficient, so we decided to continue working with UASOFTDEV. Later, we returned with a much more complex project: an already-live AI beauty ecosystem combining a Smart Mirror, mobile app, AI skin analyzer, and AR makeup. This required a Senior Flutter Engineer who could join an existing team and work with Flutter, Banuba SDK, Java/native technologies, and a production environment. UASOFTDEV matched us with a senior Flutter engineer within 60 hours. He integrated quickly into our existing team and provided the 24/7 production support we needed. During the 5.5-month engagement, we delivered 10+ major features, shipped 15+ releases across 3 product environments, and launched 2 premium subscription features. What we valued most was the consistency of their approach. Production issues and new feature requests were handled quickly, communication was personal and responsive, and the team remained highly engaged throughout both projects. The fact that we came back to UASOFTDEV with a second, significantly more technically demanding AI/AR project is probably the strongest proof of our satisfaction. They successfully scaled from a simple staffing request to supporting a complex live product without losing the same level of responsiveness, quality, and personal attention.

    • Khrystyna Sliana
      Khrystyna Sliana Digital Marketing Manager at Red Jumpers Agency
      5.0★

      DevOps Consulting Review from Khrystyna Sliana

      We hired a DevOps engineer from UASOFTDEV to handle a multi-entity AWS infrastructure split. The project was completed on schedule, with zero downtime and great attention to security and data integrity. Recommended.

    • Leonid Viktorov
      Leonid Viktorov СЕО at Biz Adviser
      5.0★

      Dedicated Team Augmentation Review from Leonid Viktorov

      I am the CEO of Biz Adviser, a business consulting company. We work with companies on strategic business initiatives, digital transformation, and improving business performance. We partnered with UASOFTDEV when we urgently needed additional engineering capacity. I was looking for proven senior developers and did not have time to spend weeks sourcing candidates and conducting multiple interviews. UASOFTDEV offered to provide vetted Ukrainian developers within 60 hours, which was exactly what we needed. The team provided senior engineers with strong technical expertise and excellent communication skills. We worked with developers across PHP, Node.js, Python, and React, depending on the project requirements. They were reliable, proactive, and able to understand not only the technical tasks but also the broader business context. The developers contributed to several important initiatives, including the implementation of an AI agent, and helped us move projects forward faster while keeping development costs under control. UASOFTDEV delivered what they promised. The process was straightforward, communication was reliable, and the developers were able to start working quickly without compromising on quality. The pricing was a good fit for our budget, and the overall value for cost was excellent. I also appreciated the cultural fit and the team's ability to communicate effectively and take ownership of their work. I would definitely recommend UASOFTDEV to companies looking for reliable staff augmentation with senior Ukrainian developers. They are a trustworthy partner that can provide strong engineering talent quickly and help businesses deliver important initiatives without the overhead of a lengthy hiring process.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Designing Bright For The Hype.

    Brightlab is an independent design & development studio that has one rule helping startups and big-scale enterprises build the most innovative online products in the market...

    Top Services:

    • Web Design
    • eCommerce Development
    • Web Development
    • UI/UX Design
    • Software Development
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    50 - 99
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    11 Projects Listed

    Brightlab Services

    • Web Design
    • eCommerce Development
    • Web Development
    • UI/UX Design
    • Software Development
    • Mobile App Development
    • IT Services
    • AI Development
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • MURAL Labs
    • Songsterr
    • HomesCooks
    • Alpha One
    • eDomus
    • TELE2
    Data sourced from the agency's DesignRush profile

    Brightlab Reviews & Testimonials

    • Yiannis Kaznessis
      Yiannis Kaznessis Founder and CEO at AgThera Inc.
      5.0★

      Web Design Review from Yiannis Kaznessis

      Our website was established and redesigned by Brightlab, and it receives a lot of traffic. Our interaction with Brightlab team was exceptional. They were dependable, communicative, and responsive. They were really easy to work with and quickly grasped what I was striving for. Additionally, there weren't many mistakes to fix after development. Incredibly capable and productive team!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Your Global Partner for Digital Transformation

    Comrax Group is a worldwide development company offering internet solutions, offshore development services, and API solutions. We are dedicated to delivering top-notch services that go beyond client expectations. Our expertise encompasses creating attractive websites, user-friendly web portals, and tailored...

    Top Services:

    • Web Development
    • Web Design
    • WordPress Website Design
    • UI/UX Design
    • Software Development
    • Show more
    Location
    California City, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $85/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    4 Projects Listed

    Comrax Services

    • Web Development
    • Web Design
    • WordPress Website Design
    • UI/UX Design
    • Software Development
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • BlackBerry
    • Jewish National Fund
    • BMW
    • Microsoft
    • Isuzu
    • INFINIDAT
    • Fashion TV
    • Suzuki
    Data sourced from the agency's DesignRush profile

    Comrax Reviews & Testimonials

    • Ryan Penn
      Ryan Penn Founder at White Hawk
      5.0★

      Web Design Review from Ryan Penn

      We engaged Comrax to revamp our website, and their level of professionalism and creativity truly exceeded our expectations. From day one, their team took time to understand our vision, offer insightful recommendations, and keep us updated every step of the way. They not only delivered the project on time but also stayed flexible with our requests for adjustments, ensuring the final result perfectly matched our brand identity.The quality of Comrax's work is outstandingthey crafted an intuitive, visually appealing design that has already garnered positive feedback from our clients. They were consistently responsive throughout the project, which made collaboration seamless and stress-free. We also found their pricing to be fair and transparent, making their services a great value for the results provided.Our entire team is thrilled with the final product, and we look forward to continuing our partnership with Comrax on future initiatives. We highly recommend them to anyone seeking a reliable, innovative web design partner.

    • Ran Zahavi
      Ran Zahavi BizDev at TechWize
      5.0★

      Drupal Review from Ran Zahavi

      Outstanding Development Partner ComraxAt TechWize, we had the pleasure of partnering with Comrax for the development of three different websites on the Drupal platform. Their expertise in creating robust and user-friendly content management systems (CMS) has significantly enhanced our ability to manage and update our websites seamlessly.From the outset, the Comrax team demonstrated a deep understanding of our requirements, delivering solutions that were not only innovative but also highly tailored to meet our specific business needs. Their knowledge of Drupal allowed for flexible and scalable solutions, enabling us to evolve our websites as our business grew.The communication throughout the project was clear, responsive, and proactive. Comraxs commitment to timelines and quality made the entire process smooth and efficient. The result has been a set of highly functional, visually engaging websites that have greatly improved our online presence.We highly recommend Comrax to any company looking for a top-tier development partner. Their professionalism, technical expertise, and dedication to customer satisfaction are second to none.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Engineering Smarter, Faster, and Scalable Solutions.

    At MatechCO, we empower businesses with cutting-edge digital solutions. Since 2009, we have been at the forefront of technology, delivering scalable, future-ready software tailored to the unique needs of enterprises worldwide...

    Top Services:

    • IT Services
    • CRM Consulting
    • Mobile App Development
    • Web Development
    • IoT
    • Show more
    Location
    East Brunswick, New Jersey
    Number of Employees
    100 - 249
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000

    Matech CO Services

    • IT Services
    • CRM Consulting
    • Mobile App Development
    • Web Development
    • IoT
    • Software Development
    • Cloud Consulting
    • eCommerce Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Mobil
    • Polaroid
    • People's Trust Insurance Company
    • Brainshark
    • Intralinks
    • Corpay
    • SkyMall
    • Wolf Camera
    • SolaPayments
    Data sourced from the agency's DesignRush profile

    Matech CO Reviews & Testimonials

    • Talha Rasheed
      Talha Rasheed Review from Google
      5.0★

      Talha Rasheed's Review Sourced from Google

      I've been working with them as a client for almost 6 years, and it has been an amazing experience.

    • EHSAN KHAN
      EHSAN KHAN Review from Google
      4.0★

      EHSAN KHAN's Review Sourced from Google

      My tenure at Matech Co has been a valuable and rewarding experience. I gained important skills, worked with supportive colleagues, and contributed meaningfully to team goals. I am grateful for the opportunities I was given and the knowledge I’ve gained throughout my time here.

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

    Bacancy stands as a top Reactjs Development Company, offering secure, scalable, and sustainable React solutions. Specializing in diverse frameworks and applications, we provide up to 40% savings on costs and a dedicated team for tailored solutions, ensuring your business is primed for growth...

    Top Services:

    • Mobile App Development
    • Web Development
    • eCommerce Development
    • Web Design
    • VR/AR
    • Show more
    Location
    Florida, Massachusetts
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    5 Projects Listed

    Bacancy Services

    • Mobile App Development
    • Web Development
    • eCommerce Development
    • Web Design
    • VR/AR
    • Software Development
    • IoT
    • Software Testing
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Laura Odorczyk
    • Bryan
    • Gerry Dunne
    • Berlin
    Data sourced from the agency's DesignRush profile

    Bacancy Reviews & Testimonials

    • Gordon Nall
      Gordon Nall Review from Google
      5.0★

      Gordon Nall's Review Sourced from Google

      Over the past five years, we have steadily expanded our relationship with Bacancy Technology, increasing the number of engineers we engage through their team. As our partnership has grown, so has the value they deliver.What has impressed me most is how effectively their engineers have self-organized, shared knowledge, and cross-trained one another. Rather than operating as individual contributors, they function as a cohesive team, collaborating on complex challenges and supporting each other's success.Over time, we have entrusted them with increasingly critical and technically demanding work. They have consistently delivered high-quality results with minimal oversight from our onshore engineering team. Their professionalism, technical expertise, and ability to take ownership have made them a valuable extension of our organization.I would highly recommend Bacancy Technology to any company looking for skilled, reliable engineering talent and a true long-term technology partner.

    • Kunal Chavda
      Kunal Chavda Review from Google
      5.0★

      Kunal Chavda's Review Sourced from Google

      We partnered with Bacancy Technology for a mid-scale development project, and the overall experience was very positive. Their team demonstrated solid technical skills, especially in understanding our requirements and translating them into practical solutions. Communication was smooth, deadlines were respected, and any challenges that came up were addressed quickly and professionally.What I appreciated most was their structured approach and the consistency they maintained throughout the project. The final delivery met our expectations, and the support they provided post-launch was equally dependable. Good choice if you’re looking for a team that’s accountable and technically capable.

    • Thomas
      Thomas Review from Google
      1.0★

      Thomas's Review Sourced from Google

      Paid $3,560 for web development—received no usable work, no deliverables, and no meaningful communication. Contractual obligations were ignored. Extremely disappointing experience.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Augment Your Team

    Intelligaia is a CX Design company that works with Business Process Groups to transform the business value of their products. Intelligaia brings innovative DesignOps practices to bridge the gap between strategy and execution at speed and scale...

    Top Services:

    • UI/UX Design
    • AI Development
    • Software Development
    • Web Development
    • Mobile App Development
    • Show more
    Location
    Apex, North Carolina
    Number of Employees
    50 - 99
    Average Hourly Rate
    $55/hr
    Minimal Budget
    $10,000 - $25,000

    Intelligaia Services

    • UI/UX Design
    • AI Development
    • Software Development
    • Web Development
    • Mobile App Development
    • Big Data Analytics
    • eCommerce Development
    • Staff Augmentation
    • IT Services
    • Managed Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Cisco Panoptica
    • DocuSign
    • Zuora
    • Hitachi Energy Powershop
    Data sourced from the agency's DesignRush profile

    Intelligaia Reviews & Testimonials

    • Raman Bhardwaj
      Raman Bhardwaj Review from Google
      5.0★

      Raman Bhardwaj's Review Sourced from Google

      Intelligaia is led by creative individuals Rajiv and Cheena whose passion I have seen over the years for customer experience design strategy. They research deep into current trends in business centered design and UX and are always thinking of innovation. Highly recommended to businesses looking to scake their CX strategy.

    • Amit Shanker
      Amit Shanker Review from Google
      5.0★

      Amit Shanker's Review Sourced from Google

      Rajiv and the team are exceptional are at designing concepts into reality. I have engaged with Intelligaia twice for early-stage product UX and have found the engagement to be highly professional, creative, and collaborative. I would highly recommend them!

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

Why companies trust DesignRush

Every agency is independently vetted before it can be listed or ranked

1

Identity Check

We verify businesses and reviewer LinkedIn profiles for integrity.

Agencies vetted
128,634+
2

Portfolio Review

We review agency work, case studies, and results to confirm skill.

Applicants rejected
48%
3

Ongoing Audit

We monitor listings regularly; outdated agencies are removed.

Agencies verified
6

Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.

See how rankings and monetization work.