Available
Alex Morgan
London, UK
Blockchain Developer
Design, Illustration
Award-winning creative with a decade of experience across brands and startups.
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Every Blockchain Developer's portfolio and application is manually reviewed by our Customer Success team. You only see vetted matches.
We have over 14,500 Blockchain Developers who've worked in many different industries and cover various styles and skillsets.
Start your searchProjects that brands and startups post most often.
End-to-end build of a v1 product: front-end, back-end, and deployment.
Build your MVPShort engagement to clear a backlog of bugs and stabilise a release.
Stabilise your releaseAdd LLM-powered features to your product, copilots, semantic search, or summarisation.
Integrate AIReact Native or Flutter app for iOS and Android from your existing spec.
Build your appDevelopment specialisms and the cross-functional roles you'll often hire alongside.
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Reviews
“Omais is a highly skilled and reliable freelancer who did a fantastic job on my Web App project. I trusted him with complex technical tasks, including working directly within a Windows Server VPS environment, and he handled everything seamlessly. He is professional, efficient, and delivers great results. I highly recommend...”
Julio @ Two Brothers Flooring, LLC
Jul 13, 2026
“Crystal‑INC was a transformative force in my creative and professional journey. The company brought clarity, structure, and artistic excellence to every project we touched. Their ability to merge luxury editorial aesthetics with precise engineering, corporate discipline, and emotional storytelling is unmatched.Crystal‑INC...”
H.E.R1 @ Crystal -INC
Jul 6, 2026
“Adam did a phenomenal job building DIMCPrep. He expertly managed the entire development process to deliver a flawless product. We now have a robust platform housing over 1,400 questions that allows candidates to track their progress effectively. His skill and attention to detail turned our vision into a reality, and we are...”
Sabrina @ DIMCPrep
Jun 24, 2026
“I worked with Daniel as one of our lead engineers on a military FPV drone training simulator built in Unreal Engine 5, a high-stakes project that needed to go from rough prototype to demo-ready in seven weeks for a live demonstration at IITSec 2025. The biggest technical win on the project was the drone flight dynamics...”
Robert @ Good Game Devs
Jun 1, 2026
“Great experience working with him. I explained what I wanted for my app and he not only got it but exceeded my expectation. The final result was better than what I had in mind. Super easy to work with.”
Michael @ MH LLC
May 24, 2026
“I had the pleasure of working with Zhenchang and was consistently impressed by his technical expertise, professionalism, and strong sense of ownership. He delivers high-quality, scalable solutions, communicates effectively, and collaborates exceptionally well across teams. Zhenchang is proactive, reliable, and quick to...”
Joseph @ Cody Solutions
May 22, 2026
Clients Rate Twine Blockchain Developers 5.0 / 5.0
on average across 8383 reviews
3–5 minutes. Tell us about your project, your timeline, and how you want experts to contact you.
Within 24 hours, you'll see a shortlist of vetted Blockchain Developers matched to your project.
Flexible payments on your terms, bill experts directly or use the Twine vault for added security.
Transparent rates, no hidden markup, and a payment path for every need.
Agencies bury a 20–40% markup inside the retainer, you never see it. On Twine, you set the price and you see the platform fee as a separate, explicit line. No surprises at checkout.
Prefer your own payment flow? Pay your expert outside Twine, incurring no commission fees. Most useful for ongoing or trusted relationships.
Funds are held in escrow and only released when you approve the deliverables. If the work isn't right, your money doesn't move. 10% commission on payments up to $10,000, just 5% on anything above.
Pick the role, the experience level and how long you need. We’ll show you what similar projects have cost on Twine. It’s a guide, not a quote.
Estimates only. Actual budget is set by you and agreed with your expert before any work begins.
ESTIMATED RANGE
$6,400 – $17,000
Full possible range for a mid-level Blockchain Developer over 2–4 weeks
Common questions answered before you post a project.
A Blockchain Developer is a tech professional who specializes in the development and implementation of blockchain technology. Their primary responsibilities include designing blockchain protocols, creating smart contracts, and developing decentralized applications (dApps). They also focus on ensuring the security and scalability of blockchain systems. Key tasks include:
Overall, Blockchain Developers play a crucial role in transforming how data is managed and secured across various industries.
Exceptional Blockchain Developers possess a unique combination of technical skills and personal attributes. Key qualities include:
These qualities enable them to deliver high-quality solutions and adapt to project demands effectively.
Typical day rates for Blockchain Developers in United States vary by experience level:
These are indicative ranges based on Twine project data. Final budgets depend on project scope and are agreed directly with your freelancer.
Recognizing the perfect Blockchain Developer involves assessing both technical skills and cultural fit. Start by reviewing their portfolio for relevant projects that showcase their expertise in the specific blockchain technology you need. Check their references and client feedback to gauge reliability and work ethic. During interviews, ask about their problem-solving approaches and past experiences. Evaluate their understanding of your business goals and how they can contribute to achieving them. A well-rounded developer will not only have the necessary technical abilities but also align with your company’s values and communication style.
When interviewing a Blockchain Developer, consider asking the following key questions:
These questions will help you gauge the candidate’s technical proficiency, problem-solving abilities, and enthusiasm for the field.
To hire a Blockchain Developer in Seattle, start by defining your project needs clearly. This includes outlining the specific skills required, such as expertise in various blockchain platforms (like Ethereum or Hyperledger), programming languages (like Solidity or JavaScript), and the experience level needed. Next, utilize platforms like Twine, where you can post your job listing, and browse through skilled professionals’ portfolios. Networking in local meetups or tech events can also help you find talented developers. Finally, conduct interviews to assess technical and interpersonal skills, ensuring a good fit for your project.
Hiring a freelance Blockchain Developer offers flexibility and often lower costs, as freelancers typically have lower overhead. They can provide personalized attention to your project and may offer more innovative solutions due to their diverse experience. However, working with an agency can provide a broader range of expertise and resources, ensuring that multiple aspects of a project are managed simultaneously. Agencies usually have established processes, which can lead to quicker turnaround times. Ultimately, the choice depends on your specific project needs, budget, and timeline.
A well-crafted project brief for a Blockchain Developer should include:
Providing clear expectations in your job description will help attract the right candidates and ensure a smoother hiring process.
Hiring on Twine is simple.
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