London, UK
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
£4,100 – £11,000
Full possible range for a mid-level Blockchain Developer over 2–4 weeks
Common questions answered before you post a project.
A Blockchain Developer specializes in creating and managing blockchain-based applications and systems. They work with blockchain technology to design decentralized solutions that improve transparency, security, and efficiency. Their responsibilities typically include:
To hire a Blockchain Developer in Sheffield, UK, follow these steps: Start by defining your project scope and requirements. Utilize platforms like Twine to post your job, detailing the specific skills and experience you need. Leverage your network to seek recommendations or look for local talent through tech meetups and events. Review candidates’ portfolios and past work to assess their expertise. Conduct interviews to gauge their problem-solving abilities and technical knowledge, ensuring they align with your project goals.
The cost to hire a Blockchain Developer in Sheffield, UK, varies based on experience level:
Prices can fluctuate based on project complexity and the developer's specific skills.
Exceptional Blockchain Developers possess a unique blend of technical skills, creativity, and problem-solving abilities. They are proficient in programming languages such as Solidity and JavaScript, and have a solid understanding of cryptography and distributed ledger technology. Key qualities include:
These traits help them deliver effective and reliable blockchain solutions.
To recognize the perfect Blockchain Developer for your needs, evaluate their technical expertise, past project experiences, and cultural fit with your team. Look for developers who demonstrate a strong portfolio showcasing relevant blockchain projects. Assess their problem-solving capabilities through technical interviews or coding challenges. Communication skills are critical; ensure they can articulate complex concepts clearly. Additionally, check references and reviews to gauge their reliability and professionalism. A developer who is passionate about blockchain technology will likely bring innovative ideas to your project.
When interviewing a Blockchain Developer, consider asking the following key questions to assess their expertise:
These questions will help you gauge their technical knowledge and problem-solving skills.
Hiring a freelance Blockchain Developer often provides more flexibility and cost-effectiveness compared to working with an agency. Freelancers typically have lower overhead costs and can offer competitive rates. They may have diverse skills and unique experiences, allowing for tailored solutions. Conversely, agencies usually have a larger team, providing a broader range of services and support. They may also offer more structured project management and reliability. The choice between the two depends on your project’s scope, budget, and desired level of collaboration.
A well-crafted project brief or job description for a Blockchain Developer should include the following elements:
Providing clear and comprehensive information will attract qualified candidates who align with your needs.
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