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Hire Expert Blockchain Developers

Hire blockchain developers on a full-time, hourly, or fixed-cost project basis and manage them as your extended team.

ISO 9001 & 27001 Certified with over 98% 5-Star Rating

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Are you interested to learn more about our Blockchain services?

What happens after you contact us?

Our solution experts will answer your questions in a secure online meeting. You will get good information and honest advice in plain English. You are then free to choose how to move forward.

Our clients include 150 Global Brands, Silicon Valley Founders

Blockchain Development Services

We offer futuristic Blockchain development solutions to help clients grow in this thriving market. We provide services in areas like

Cryptocurrency Development

Cryptocurrency Development

Handoff your cryptocurrency development to our team of qualified engineers. Our team has real-world experience creating a range of crypto tokens, bitcoins, altcoins, NFTs, custom smart contracts, etc., with bank-level security features that help investors trade safely within a decentralized blockchain network.

NFT Marketplace Development

NFT Marketplace Development

We bring our multi-year eCommerce development knowledge to create NFT marketplaces with added layers of security, allowing digital collectors to buy/sell tokens safely, without chances of duplication.

ICO and IEO Development

ICO and IEO Development

Are you looking for a tech partner who can execute your ICO and IEO development tasks and get results of which you can be proud? Bring us in. We have the expertise to develop token-based fundraising platforms with many use cases, some still untapped, to give you an edge in the token sale market.

Hyperledger Solutions

Hyperledger Solutions

Our robust hyperledger solutions add modularity to apps, improve scalability, never let private info go public, and allow data sharing on a need-to-know basis.

Decentralized App (dApp) Development

Decentralized App (dApp) Development

Need end-to-end dApp development? Team up with us to create robust dApps built on advanced public blockchains (like Ethereum) that make crypto exchanges open, transparent, and permissionless, removing all third-party involvements and headaches.

End-to-end Blockchain Development

End-to-end Blockchain Development

Our certified developers can handle the complete blockchain development process, from concept to launch. You’ll find us tackling the most challenging parts from start to finish at prices much less than what your local guys would quote.

Blockchain Consultation

Blockchain Consultation

We know that it takes more than just an idea to achieve blockchain success. So, our experts provide consultations, like how to start and where to focus, to help you get going in your blockchain journey confidently.

Crypto Wallets Development

Crypto Wallets Development

We know how to ideate, create, and tailor beautiful crypto wallets that offer a fantastic user experience with simple layouts and identifiable functions that are easy to operate.

Smart Contract Development

Smart Contract Development

We have the expertise to develop and deploy smart contracts in blockchain platforms for reducing delays and legal hassles otherwise caused due to paperwork and manual interventions.

Centralized / Decentralized Exchange Development

Centralized / Decentralized Exchange Development

We align our services with what you want. You could either want a fully centralized exchange system with admin control. Or a decentralized platform with no intermediary. We are proficient in developing both depending on who your exchangers are.

DeFi Solution Development

DeFi Solution Development

Our high-quality DeFi solutions provide much simpler and quicker peer-to-peer (or wallet-to-wallet) crypto transfers without bringing any central authority as a facilitator, thus re-Defi-ning banking without involving the banks.

Dedicated Blockchain Development

Dedicated Blockchain Development

Our dedicated team of smart contract and blockchain developers offers solutions of your choice, gives undivided attention to your project, provides hands-on execution whenever you need it, freeing you up for more important tasks that matter to you.

POC Development

POC Development

Our team creates a Proof of Concept (POC) in around 4-5 weeks to evaluate your blockchain app’s market readiness, applicability, potential and get a sense of how it will work in the long run.

Blockchain Staff Augmentation

Blockchain Staff Augmentation

We want to take burdens off your shoulders. So, we help you hire offshore blockchain developers at short notice to fulfill your temporary spikes. And we ramp down when demands are low. So, you pay for what’s required only and not a penny more.

Custom Blockchain Apps

Custom Blockchain Apps

We help businesses add uniqueness to their solutions by developing custom blockchain apps that fit exclusive needs, budgets, and standards.

Technology Stack We Use

Our blockchain developers provide you the quality you need and the flexibility you want using the following tech stacks:

Cloud & Containerization
  • AWZ
  • Azure
  • GCP
  • Docker
  • Kubernetes
  • ElasticBox
Platforms & Blockchains
  • ST-20
  • ERC-20
  • ERC-721
  • ERC 1559
  • AML
  • KYC
  • GDPR

Approaches to Blockchain

Our world-class team, of course, suggests which Blockchain approach would best fit your business. But, we let you have the last word before we get things rolling for you. Here are the Blockchain approaches we think can transform your business.


Permission-less and non-restrictive, public blockchains work best when maintaining large user bases where any member of the shared network can verify records, do proof-of-work, or engage in mining.


When confidentiality is vital, private blockchains are the best. Private blockchains allow access to data to only those participants who matter, letting data out on a need-to-know basis.


Hybrid blockchains are a blend of both private and public blockchains. In this model, users can share data with the public and keep things confidential if needed, making the ecosystem super flexible.

Or, Use this form to tell us about your needs.

Our Blockchain Development Process


Discovery Stage

We look at your project requirements at this stage. We try to get a sense of what blockchain solutions you need. Each blockchain network (public, private, and hybrid) has distinct pluses and minuses. So, we decide which one will best drive your goals. In short, we gather all requirements at this stage and form an initial workflow based on that.


Product Feasibility Study

Next, we do a theoretical build-up of your blockchain app or website, outlining the architecture, frameworks, consensus mechanism, tech stacks, mockups, designs, and feasibility. Once our stakeholders approve the prototype and our Proof-of-Concept (POC), we proceed with the development work.


Product Development

At this point, we focus on the blockchain platforms, programming languages, UI/UX, databases, APIs, and the middleware that connects the external systems with the blockchain. Our developers test and release an alpha version to spot issues. Once we fix all gaps and find the product doing well in the market, we add more complex features down the road.


Support and Maintenance

Our job doesn’t end with just the product launch. We offer post-launch support too. We closely monitor the transactions executed in blockchain and keep a regular watch to remove bugs/glitches (if any). We even handle feature upgrades from time to time to ensure your product is always up to date and functions flawlessly throughout its lifetime.

Why Hire Blockchain Development Team from Capital Numbers

  • We Match Your Needs

    By partnering with Capital Numbers, you'll get access to our 700+ in-house developers and will be able to fill any role immediately.

  • World-class Coding Standards

    We adhere to:
    1. Security best practices
    2. Test-driven development and Test automation
    3. API documentation with Swagger
    4. In-line code comments as a default standard

  • You’re in control

    You get a dedicated blockchain development team entirely under your control but without the administrative issues and hassles. You control your team’s work, and all processes are fully transparent, so you know exactly who’s doing what, when, and why.

  • Work with Experts

    Hire product developers across 20+ skill sets: Access varied tech stacks and build your product in React, Node, Python, Angular, Java, Rails, PHP, Vue, .Net/C#, and many other languages and frameworks.

  • Hassle-free production

    Our HR specialists, office managers, and system administrators make sure your development team’s working conditions are perfect.

  • Low Attrition

    Corporate outings, regular training, engagement activities, career counseling, grievance handling – our HR veterans will sure every developer you hire with us stays motivated to try hard to make you successful.

  • Zero Overheads

    Payroll, taxes, benefits, sick days, and vacations for your team – we’ve got you covered.

  • 50% Cost reduction

    Our clients have been able to save up to 50% in labor costs.

  • 4.8/5 Rating on Clutch

    Our clients highlight our ability to build great personal relationships with them, except for the excellent code quality.

  • 75% of the company – senior and middle developers

    We invest in attracting the best talent from the market. We hire only strong middle and senior blockchain developers and no juniors.

  • ISO 27001 Information Security

    Capital Numbers adheres to ISO 27001 certified information security standards to ensure that your IP and investment are protected.

Your ideal choice, whether you need just any one talent or a full-cycle development team

People who excel at everything from planning and scheduling to progress tracking and workflow optimization.

Related tools and technologies:

Product Roadmap, Burndown Chart, Release Plan, Jira, TeamWork, Risk Register, Budget Tracker, Project Charter.

Our experienced business analysts will help you refine the project requirements and improve business processes through rigorous research and detailed documentation.

Related tools and technologies:

Storymap, Product Backlog, Business Model Canvas, Value Proposition.

Our Designers help you transform your product vision into user-friendly designs and create user journeys optimized for the best user experience and highest conversion rates.

Related tools and technologies:

Sketch, Figma, inVision, Zeplin, Adobe CC, Story Map, Principle, Piece of paper, Pencil

Our front-end developers create the part of your application that the users see and directly interact with. They make sure the experience is equally smooth and user-friendly to every person who uses the app.

Related tools and technologies:

JavaScript, HTML, CSS, JavaScript, React, Vue, Angular, React Native, Ionic.

Our back-end developers plan and develop the whole application architecture, decide which services and databases should communicate together, how API and external integrations should work, and ensure the product is secure and stable.

Related tools and technologies:

PHP, Python, .NET, Node.js, Java, RoR, GoLang, Databases, SQL, Algorithms, Microservices, Architecture.

Reducing the time needed to integrate changes while improving the quality is a tremendous competitive edge in today’s world. We employ the best CI/CD practices to minimize the number of errors during integration and deployment to streamline your project.

Related tools and technologies:

AWS. Azure, Cloud Computing, Docker, Continuous Integration/Delivery, Kubernetes, Ansible, Terraform.

From meticulous manual testing to writing complex automated testing solutions, our bright QA engineers and scrupulous testing teams will ensure your software solution is free from any performance, stability, or functionality issues.

Related tools and technologies:

JavaScript, Selenium, Cucumber, Cypress, TestCraft, Katalon, WebDriver, Appium, Jasmine, Apptester

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Great Reviews

97 Out Of 100 Clients Have Given Us A Five Star Rating On Google & Clutch

Emily NyazCapital Numbers 5/ 5
George LevyCapital Numbers 5/ 5
Stephen SmithCapital Numbers 5/ 5
Bernice AngCapital Numbers 5/ 5
Ryan GallaceCapital Numbers 5/ 5
Bob NorbergCapital Numbers 5/ 5
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