Best C# Developers in the United States

8 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.

C#
AI
$50,000 & Up
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United States × C# Development × AI × $50,000 & Up × Clear Filters

  • Azumo

    Verified Verified by the DesignRush team for authenticity and credibility.

    Build Intelligent Apps for Web, Mobile, Data, AI and Cloud

    Azumo builds custom web, mobile, and AI software with nearshore teams in South America, serving Meta, Omnicom, and the Discovery Channel. Its SOC 2-certified engineers delivered 40%+ search precision gains for Meta. Best fit for startups and enterprises needing U.S.-aligned nearshore development teams...

    Top Services:

    • AI Development
    • Software Development
    • Staff Augmentation
    • Mobile App Development
    • Big Data Analytics
    • Show more
    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $55/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    9 Projects Listed

    Azumo Services

    • AI Development
    • Software Development
    • Staff Augmentation
    • Mobile App Development
    • Big Data Analytics
    • DevOps Consulting
    • Cloud Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Discovery Channel
    • Meta
    • Zynga
    • Jostens
    • Assembled Brands
    • NGL
    • NCSoft
    • Twitter
    • Horoscope.com
    • Bento
    Data sourced from the agency's DesignRush profile

    Azumo Reviews & Testimonials

    • Michael S.
      Michael S. Director at Software Development Company
      5.0 ★

      Software Development Review from Michael S.

      We selected Azumo to develop our software. We transitioned from another development company, so Azumo was initially responsible for migrating our existing code and environments. We are currently still working with Azumo as our nearshore software development team on adding new items to our software.

    • Anonymous
      Anonymous CTO at Healthcare Company
      5.0 ★

      UI/UX Design Review from Anonymous

      Azumo helped us migrate our existing UIs into a new framework, creating reusable components and the infrastructure needed for future development. The developer they assigned became a seamless part of our team, always punctual, responsive, and a great fit overall.

    • Anonymous
      Anonymous VP Product & Engineering at Sales & Mktg Software Company
      5.0 ★

      Software Development Review from Anonymous

      Thanks to Azumo’s work, our product is now more scalable, optimized, and ready for a growing user base. Their team has managed the engagement effectively, keeping us updated and addressing any challenges along the way. We’ve appreciated their constant availability and proactive communication.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.8 4.8 (12)
    4.6 4.6 (20)

  • Talentica Software

    Verified Verified by the DesignRush team for authenticity and credibility.

    Building Products AI-Native Way

    Talentica offers product engineering, with a playbook-driven approach refined across more than 200 products over 22 years. Its 200+ GenAI-certified developers deployed AI features in 60% of products. Recommended for startups and SaaS companies needing MVP development, AI integration, or product scaling...

    Top Services:

    • Software Development
    • AI Development
    • IT Services
    • Big Data Analytics
    • Blockchain
    • Show more
    Location
    Pleasanton, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    7 Projects Listed

    Talentica Software Services

    • Software Development
    • AI Development
    • IT Services
    • Big Data Analytics
    • Blockchain
    • Mobile App Development
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Wideorbit
    • Sema4.AI
    • Realization Technologies Inc.
    • TailoredMail
    • StructuredWeb Inc
    • Amplify
    • Mist Systems (Juniper Company)
    Data sourced from the agency's DesignRush profile

    Talentica Software Reviews & Testimonials

    • Ashish Sharma
      Ashish Sharma Sr Engineering Manager at OpenGov India Pvt Ltd
      4.7 ★

      Software Development Review from Ashish Sharma

      Talentica has proven to be an exceptional software outsourcing partner, consistently exceeding expectations in both the quality of their resources, deliverables and their commitment to our success. They function not merely as a vendor, but as an extension of our core engineering team. Key Highlights of our Partnership: High Resource Quality: The engineers provided by Talentica are technically strong and highly competent. They integrate seamlessly with our internal teams and quickly take ownership of complex projects. Commitment and Reliability: Talentica is a truly reliable partner that consistently demonstrates a strong willingness to go beyond the standard scope of work. They proactively identify risks and contribute innovative solutions. Critical Project Support: Their expertise was pivotal in two critical areas: Data Pipeline & Reporting: They were instrumental in both enhancing and maintaining a reliable data pipeline & reporting infrastructure. Software Upgrades: They managed challenging, large-scale software upgrades, ensuring we successfully transitioned to modern technology stacks with minimal disruption. Overall, Talentica is a dependable and high-value partner assisting our mission-critical projects.

    • Anonymous
      Anonymous Advisor at IT Company
      5.0 ★

      Software Development Review from Anonymous

      We had created a conceptual framework to authenticate and verify the provenance, transaction history, and authorship of blockchain-based NFTs. Talentica was brought on board to test and refine the concept from both functional and engineering perspectives, and later to build a Minimum Viable Product (MVP) aligned with the agreed specifications and constraints.

    • Anonymous
      Anonymous Engineering Manager at SaaS Company
      5.0 ★

      Software Development Review from Anonymous

      For several years, the team was composed entirely of Talentica contractors. Since January 2022, I have been directly managing them. The Talentica team handled the admin tooling backend, which included multiple Python Flask services with Postgres and Elasticsearch. These services operated in a service-oriented architecture deployed on Kubernetes, using Istio for service mesh and Spinnaker for deployments.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.9 4.9 (27)
    4.4 4.4 (244)

  • Geniusee

    Your Partner in AI & Custom Software Excellence

    Geniusee is a U.S.-based AI and software engineering company with delivery hubs in Ukraine and Poland. We help businesses modernize legacy systems and scale faster through AI-powered, cloud-native solutions. Our team of 300+ experts has delivered 200+ projects for clients like Dell and Bloomberg. We...

    Top Services:

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

    Geniusee Services

    • Software Development
    • Mobile App Development
    • Web Development
    • AI Development
    • Big Data Analytics
    • Product Design
    • Blockchain
    • IoT
    • Software Testing
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Zedosh
    • Finance Unlocked
    • RealmFive
    • Pause
    • TradeSmarter
    • Scoove
    • Ajuma
    • Drum
    • Wyzoo
    • Validify
    Data sourced from the agency's DesignRush profile

    Geniusee Reviews & Testimonials

    • Anonymous CEO & Co-Founder at Finance Unlocked
      5.0 ★

      Web Design Review from Anonymous

      Geniusee successfully delivered a robust and high-performing platform with excellent uptime and reliability. Their team consistently meets sprint requirements, aligning seamlessly with the project roadmap. Despite operating remotely, they collaborate effectively with our internal team and ensure smooth execution across all phases of development.

    • Dhruv Ghulati
      Dhruv Ghulati CEO at FactMata
      5.0 ★

      Marketing Analytics Review from Dhruv Ghulati

      Thanks to Geniusee, our data engineering system can now handle multiple data types. The team's workflow was effective in reporting and daily management of Sprints.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.5 4.5 (2)

  • Mystic Media

    Full Service - Mobile App, Software & Web Development Company

    Mystic Media is a full-service technology agency specializing in custom software, mobile app, web, and firmware development. Our experienced team works closely with startups, growing businesses, and enterprise organizations...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • AI Development
    • Cloud Consulting
    • Show more
    Location
    Sandy, Utah
    Number of Employees
    Under 49
    Average Hourly Rate
    $160/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    12 Projects Listed

    Mystic Media Services

    • Mobile App Development
    • Software Development
    • Web Development
    • AI Development
    • Cloud Consulting
    • Digital Services
    • Web Design
    • Managed Services
    • VR/AR
    • Blockchain
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • KT Tape
    • Tata Chemicals
    • Won-Door
    • BioWave
    • QuickShot Supply
    • Bean Trailer
    • Bingoat
    • Western Line Constructors
    • Huck It
    • Monarch Education
    Data sourced from the agency's DesignRush profile

    Mystic Media Reviews & Testimonials

    • Makaila Malungahu
      Makaila Malungahu Owner at Evntori
      5.0 ★

      Mobile App Development Review from Makaila Malungahu

      Working with Chris and Mystic Media was the best decision. They designed and built our peer-to-peer wedding and event rentals app from scratch, and it looks and works great! We're super happy with our project!

    • Makaila Malungahu
      Makaila Malungahu Review from Google
      5.0 ★

      Makaila Malungahu's Review Sourced from Google

      Working with Chris and Mystic Media has been great for our huge app development project and excited to continue working with them. Don't hesitate to reach out to them!

    • Bryan Pratt
      Bryan Pratt Review from Google
      5.0 ★

      Bryan Pratt's Review Sourced from Google

      Mystic Media has been excellent to work with, offered great value, and their expertise and project management has been evident throughout the development process. We hired Mystic to take an idea and concept drawings through UI/UX and graphic design, programming and development, all the way to the market. They have met or exceeded all milestones, even with significant additions to scope along the way. We're currently in beta testing before release, and we are very satisfied with the entire experience. Mystic has earned my unqualified endorsement for anyone looking to develop their first app with them, as we have done.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.3 4.3 (1)
    4.8 4.8 (29)

  • Devox Software

    AI-accelerated engineering partner for legacy modernization and smart enterprise solutions dev

    Founded in 2018, Devox Software partners with mid-market and enterprise businesses to modernize aging systems, engineer new digital products, and bring AI into production the right way: safely, incrementally, and with measurable ROI...

    Top Services:

    • Software Development
    • Cloud Consulting
    • AI Development
    • DevOps Consulting
    • Mobile App Development
    • Show more
    Location
    Miami, Florida
    Number of Employees
    100 - 249
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    7 Projects Listed

    Devox Software Services

    • Software Development
    • Cloud Consulting
    • AI Development
    • DevOps Consulting
    • Mobile App Development
    • Big Data Analytics
    • Business Consulting
    • IoT
    • Digital Strategy
    • Web Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Syngenta
    • Truevo
    • CureMedia
    • Optherium
    • ActivePlace
    • Ferretly
    • SwissMentor
    • Damundo
    • Espressotoria
    • ILVE
    Data sourced from the agency's DesignRush profile
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    5.0 5.0 (9)

  • Switch Software Solutions

    A lifelong partner to solve any tech challenge together

    Hi there! We were expecting you! We are a nearshore software services and consulting company that partners with forward-thinking companies to achieve their business goals and accelerate growth in the digital age. We are seen as a lifelong partner for tackling any tech challenge...

    Top Services:

    • Software Development
    • Mobile App Development
    • IT Services
    • UI/UX Design
    • Web Development
    • Show more
    Location
    Austin, Texas
    Number of Employees
    100 - 249
    Average Hourly Rate
    $70/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    1 Project Listed

    Switch Software Solutions Services

    • Software Development
    • Mobile App Development
    • IT Services
    • UI/UX Design
    • Web Development
    • Software Testing
    • AI Development
    • VR/AR
    • Cloud Consulting
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Penske Logistics
    • Santander Consumer
    • Zenus Bank
    • Verifone
    • BBVA Bank
    • Axletree
    • Oddissey
    • BCIE
    • Sodexo
    • Allied World
    Data sourced from the agency's DesignRush profile

    Switch Software Solutions Reviews & Testimonials

    • Hernán Garro
      Hernán Garro Review from Google
      5.0 ★

      Hernán Garro's Review Sourced from Google

      Excellent working place. People is the most valuable characteristic. Interest in continuous improvement is not less remarkable. It is a comfortable place to work with plenty of amenities.

    • Andres Sierra
      Andres Sierra Review from Google
      5.0 ★

      Andres Sierra's Review Sourced from Google

      Test your software before taking it to production, do it with what you are developing or with what you are buying.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.8 4.8 (42)

  • SPsoft

    Healthcare Software Development Company - AI Voice Agents

    Healthcare Software Development company. AI Solutions, Voice AI Agents, GenAI platform development, HL7 FHIR Software Development, and more...

    Top Services:

    • AI Development
    • Software Development
    • Big Data Analytics
    • Cloud Consulting
    • DevOps Consulting
    • Show more
    Location
    Wilmington, Delaware
    Number of Employees
    50 - 99
    Average Hourly Rate
    $70/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    3 Projects Listed

    SPsoft Services

    • AI Development
    • Software Development
    • Big Data Analytics
    • Cloud Consulting
    • DevOps Consulting
    • Web Development
    • Mobile App Development
    • Staff Augmentation
    • Managed Services
    • Cybersecurity
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • WellStack
    • Ciba Health
    • Quintuple Aim Solutions
    • Vironix Health
    • Psytech International
    • SwitchBack
    • Healthie
    • Observia
    Data sourced from the agency's DesignRush profile
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  • Coderio

    Accelerate Your Digital Transformation.

    Coderio helps companies of all sizes, from Fortune 500 to SMBs, across the Americas accelerate their digital transformation. Their services are tailored to accomplish objectives through expert knowledge, problem-solving, and streamlining deliverables...

    Top Services:

    • Software Development
    • UI/UX Design
    • Web Development
    • eCommerce Development
    • AI Development
    • Show more
    Location
    Miami, Florida
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up

    Coderio Services

    • Software Development
    • UI/UX Design
    • Web Development
    • eCommerce Development
    • AI Development
    • Mobile App Development
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • VISA
    • BBVA
    • Coca Cola
    • IBM
    • McDonalds
    • Aston Martin
    • Avon
    • Fedex
    • Cinemark
    • Santander Group
    Data sourced from the agency's DesignRush profile

    Coderio Reviews & Testimonials

    • Dailiet Roxana Chinea Pantaleon
      Dailiet Roxana Chinea Pantaleon Review from Google
      5.0 ★

      Dailiet Roxana Chinea Pantaleon's Review Sourced from Google

      I received excellent support from Coderio. They were dependable at every step, and their communication was consistently clear.

    • Jefry Saul Rauda Padilla
      Jefry Saul Rauda Padilla Review from Google
      5.0 ★

      Jefry Saul Rauda Padilla's Review Sourced from Google

      They are efficient, reliable, and always go the extra mile to deliver outstanding results. Personal muy capacitado.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.6 4.6 (30)

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