Standing at the helm of blockchain technology, top smart contract development companies specialize in building secure, efficient, and highly accurate smart contracts - digital contracts stored on a blockchain that outline the terms and conditions of an agreement between two parties. They employ teams of blockchain developers, engineers, and cybersecurity experts who can design and deploy smart contracts on various blockchain platforms, like Ethereum, IBM, Hyperledger, and more. Businesses can leverage their cutting-edge solutions to bolster the security and transparency of transactions, and streamline and automate complex business processes, from supply chain management to finance, healthcare, or retail. Compare prospective partners by client reviews, pricing, size, and more to find the most suitable one for your project.

Best Smart Contract Companies

9 Companies-Rankings updated: October 18, 2026
Smart Contracts

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.

Smart Contract Development × Hardware & Networking × $10,000 - $25,000 ×Clear Filters
  • ️ Web Development ️| Mobile Development ️| UI/UX Design ️| VR/AR | AI Development

    Onix Systems Engineering Partner for Product Companies.We build software that scales from early-stage MVPs to enterprise platforms handling millions of users. Our 350+ engineers bring deep expertise in AI/ML integration, cloud-native architecture, and full-cycle product development...

    Top Services:

    • Mobile App Development
    • Web Development
    • Web Design
    • VR/AR
    • Software Development
    • Show more
    Location
    Kropyvnytskyi, Ukraine
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    55 Projects Listed

    Onix-Systems Services

    • Mobile App Development
    • Web Development
    • Web Design
    • VR/AR
    • Software Development
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • misterb&b
    • Wine Picker
    • Adoric
    • Kalisaya
    • Elastic.io
    • LiftSync
    • Hashplay Inc.
    Data sourced from the agency's DesignRush profile

    Onix-Systems Reviews & Testimonials

    • Heberto Limas-Villers
      Heberto Limas-Villers President at Colorado Sports Video
      5.0★

      Web Development Review from Heberto Limas-Villers

      Onix was our choice for the improvement of the company's website as part of our expansion into other states. They did a very good job of understanding my requirements and had several solutions for our needs. We had to automate a large part of the back end of the website, and they did a fabulous job with that. Communication with them was seamless, and they were very organised and diligent throughout the process. (Verified via email)

    • Justin Zimmerman
      Justin Zimmerman SAP Manager at Haas Automation
      5.0★

      Mobile App Development Review from Justin Zimmerman

      Onix and Haas Automation have worked together for five years. To meet our iOS and Android development needs, Onix provides us with exceptional resources. Their technical team increases the efficiency of our entire mobile development team by sharing information and training our in-house developers. Their developers are very experienced, insightful, easy to work with, and communicative. (Verified via email)

    • Jonah Fialkow
      Jonah Fialkow CEO at Bracketology
      5.0★

      Mobile App Development Review from Jonah Fialkow

      They have always gone above and beyond the call of duty and truly see themselves as an extension of the team at our company.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • 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
    Berlin, Germany
    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
  • DigiNeat Smart Technologies

    Award WinnerRecipient of a Best Design Award for outstanding work.

    Innovating Your Digital Future

    DigiNeat is a team of professionals who create stunning designs and integrate cutting-edge technologies to increase sales. We help businesses stand out in the online space and attract customers with unique solutions that combine creativity and efficiency...

    Top Services:

    • Web Development
    • Mobile App Development
    • Software Development
    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed

    DigiNeat Smart Technologies Services

    • Web Development
    • Mobile App Development
    • Software Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • MDI Connect
    • UnitBank
    • Orgo
    • Berly Media
    • Cb Line Radio
    Data sourced from the agency's DesignRush profile

    DigiNeat Smart Technologies Reviews & Testimonials

    • Matthew Cifelli
      Matthew Cifelli Founder at Attain Physical Therapy
      5.0★

      Mobile App Development Review from Matthew Cifelli

      Working with DigiNeat Smart Technologies on our mobile app development project was an excellent experience from start to finish. As a healthcare provider, Attain Physical Therapy needed a solution that was not only functional and reliable but also intuitive for our patients to use. DigiNeat team took the time to fully understand our goals and designed an app that enhances patient engagement while streamlining our communication and scheduling processes.Their professionalism, attention to detail, and clear communication made the entire process smooth and stress free. They offered valuable suggestions that improved both the design and usability of the app, ensuring it truly supports our mission of delivering personalized, patient centered care.We are extremely pleased with the final product and have already received positive feedback from our patients. I would gladly recommend DigiNeat Smart Technologies to any organization seeking an innovative and dependable mobile app development partner.

    • Jonathan Bailor
      Jonathan Bailor CEO at Yopti Wellness Technologies
      5.0★

      Mobile App Development Review from Jonathan Bailor

      DigiNeat Smart Technologies helped us develop a custom mobile app tailored to the wellness and fitness space. They delivered polished, functional features and kept us updated throughout each phase of development. The team handled last-minute requests smoothly, integrated our feedback effectively, and provided valuable input that improved the overall product.Their approach was professional, timely, and collaborative. We appreciated their ability to balance technical execution with thoughtful insight into user experience and industry relevance.

    • Yogeshwar Chandrapati
      Yogeshwar Chandrapati Review from Google
      5.0★

      Yogeshwar Chandrapati's Review Sourced from Google

      We partnered with DigiNeat to develop a custom e-commerce platform, and they delivered an exceptional product from start to finish. The website is fast, secure, and optimized for conversions, everything was built with our customers in mind. Since launching the site, we’ve seen a clear increase in traffic and online orders. Their development team is skilled, responsive, and truly understands the goals behind the build. A solid investment that paid off fast.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Delivering digital impact.

    UHP - Delivering ImpactAs an established software development company, we support your digital strategy and implement custom solutions tailored to your needs, whether you are an ambitious scaling business or a corporate leader.We are committed to delivery and fair pricing (Nearshore)...

    Top Services:

    • Software Development
    • Digital Strategy
    • Web Development
    • AI Development
    • Mobile App Development
    • Show more
    Location
    Darmstadt, Germany
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    6 Projects Listed

    UHP Services

    • Software Development
    • Digital Strategy
    • Web Development
    • AI Development
    • Mobile App Development
    • Cloud Consulting
    • Staff Augmentation
    • Cybersecurity
    • IT Services
    • UI/UX Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Herbalife
    • CSL Behring
    • ifm
    • FRÄNKISCHE
    • TANITA
    • AWB Group
    • Symsights
    Data sourced from the agency's DesignRush profile

    UHP Reviews & Testimonials

    • share 4good
      share 4good Review from Google
      5.0★

      share 4good's Review Sourced from Google

      Software development in time and budget. Agile, on eye level. UHP are a pleasure to work with. Gerrit, GM

    • Benjamin Blust
      Benjamin Blust Review from Google
      5.0★

      Benjamin Blust's Review Sourced from Google

      UHP is a highly competent, experienced, and customer-focused team with extensive expertise in custom software solutions and mobile app development. For several years, we have been supporting national and international clients (including those in Amsterdam, London, Hong Kong, and Frankfurt) in the areas of internet and native app development with UHP Software. Here's to many more years!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Your digital development idea, our tech skills.

    We are a technology-driven software house that provides high-quality web and mobile applicationsThe wide experience of our team enables to operate successfully in various areas, such as eHealth, telecom, logistic, fintech, IoT, work with AI, and others. We can create a digital product from scratch or...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Design
    • Web Development
    • UI/UX Design
    • Show more
    Location
    Lodz, Poland
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed

    Liki Services

    • Software Development
    • Mobile App Development
    • Web Design
    • Web Development
    • UI/UX Design
    • SEO
    • IoT
    • Staff Augmentation
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Orange
    • Knowde
    • Epicurean Butter
    Data sourced from the agency's DesignRush profile

    Liki Reviews & Testimonials

    • Jan Ekiel
      Jan Ekiel Review from Google
      5.0★

      Jan Ekiel's Review Sourced from Google

      Good place for programmers, space for dreamers, friends who knows what's the trustiness, and the magic experiences....

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • We build effective software development teams to deliver world-class engineering solutions.

    Capaciteam in Dublin, Ireland, is a cool company that's great at making custom software and hooking you up with awesome IT folks. They do all kinds of stuff like web and mobile development, cloud work, design, data management, quality assurance, project management, and more. With over ten years of doing their...

    Top Services:

    • Web Design
    • Software Testing
    • Mobile App Development
    • Software Development
    • Staff Augmentation
    • Show more
    Location
    Dublin, Ireland
    Number of Employees
    100 - 249
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    6 Projects Listed

    Capaciteam Services

    • Web Design
    • Software Testing
    • Mobile App Development
    • Software Development
    • Staff Augmentation
    • Cloud Consulting
    • IT Services
    • Cybersecurity
    • DevOps Consulting
    • Blockchain
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Ryanair
    • Ornua
    • PGIM
    • DAA
    • KBC Bank
    • OPW Ireland
    • Personio
    • Logicalis
    • Invoicefair
    • Payslip
    Data sourced from the agency's DesignRush profile
  • Shape Your Future with Mirko's Vision at FourBlocks.

    Empower your business with 4 Blocks, the leading provider of blockchain development and innovative enterprise solutions. Specializing in Web3 services and secure blockchain technology, we help you experience the future of business...

    Top Services:

    • Blockchain
    • Software Development
    • Web Design
    • Web Development
    • DevOps Consulting
    • Show more
    Location
    Cassola, Italy
    Number of Employees
    50 - 99
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    3 Projects Listed

    4Blocks Services

    • Blockchain
    • Software Development
    • Web Design
    • Web Development
    • DevOps Consulting
    • Business Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • HEXucation
    • Upturn
    • HoneyMiniSwap
    Data sourced from the agency's DesignRush profile
  • Innovate. Integrate. Inspire: Your Tech Partners.

    At the forefront of innovation, we are a pioneering technology firm weaving together software, hardware, and cutting-edge deep tech solutions. We aspire to inspire change and elevate possibilities through our innovative tech solutions...

    Top Services:

    • IoT
    • Software Development
    • AI Development
    • Mobile App Development
    • Web Development
    • Show more
    Location
    Krakow, Poland
    Number of Employees
    50 - 99
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    4 Projects Listed

    Codahead Services

    • IoT
    • Software Development
    • AI Development
    • Mobile App Development
    • Web Development
    • Blockchain
    • Web Design
    • VR/AR
    • Product Design
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Rheinmetall
    • Appetize
    • TickPredict
    • ScoreSplit
    • Captiv8
    • Fishangler
    • Spoton
    • Shift4
    • Respect Energy
    • Telebiz
    Data sourced from the agency's DesignRush profile
  • Let's Move Ahead Together

    Shivohm are bespoke solution provider dedicated to helping our clients become industry leaders with innovative and practical solutions. we provide high-quality services in web & mobile development, digital marketing, data engineering, and data management...

    Top Services:

    • Web Development
    • Web Design
    • WordPress Website Design
    • SEO
    • Digital Marketing
    • Show more
    Location
    Adalaj, India
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000

    Shivohm Services

    • Web Development
    • Web Design
    • WordPress Website Design
    • SEO
    • Digital Marketing
    • Mobile App Development
    • Software Development
    • CRM Consulting
    • DevOps Consulting
    • Business Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Pivot
    • Sonoran
    • Redirect Health
    • Naya Energy
    • 3RIVE
    • The Doodle Tribe
    • Paradise Ridge Family Dentistry
    • Wilmot Family Dentistry
    • Colorado Eye Institute
    • 100Club of Arizona
    Data sourced from the agency's DesignRush profile

    Shivohm Reviews & Testimonials

    • Parth Nagvadia
      Parth Nagvadia Review from Google
      5.0★

      Parth Nagvadia's Review Sourced from Google

      I've had a really positive experience working here. One thing I appreciate the most is the company culture—people are approachable, supportive, and always willing to help each other. It feels like everyone is treated with respect, no matter their role or experience.The management is understanding and flexible whenever genuine situations come up. They listen to employees, encourage new ideas, and create an environment where you can learn and grow.What stands out to me is that everyone gets an equal opportunity to prove themselves. If you're willing to take ownership and put in the effort, your work is noticed. Overall, it's been a great place for both personal and professional growth.

    • Parth parth
      Parth parth Review from Google
      5.0★

      Parth parth's Review Sourced from Google

      It's been a nice journey working here. The work environment is professional and I've learned a lot from my teammates. Management is open to feedback and there is good scope to develop new skills. Overall, happy to be part of the team.

    • Harmony On Highway
      Harmony On Highway Review from Google
      1.0★

      Harmony On Highway's Review Sourced from Google

      Poor employee treatment and very little focus on retention. Frequent layoffs create job insecurity, and salary increments are nonexistent despite good performance. Not a great place for long-term career growth.

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

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