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.
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
€2,800 – €7,500
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 the development and implementation of blockchain technology. Their primary responsibilities include designing and maintaining blockchain protocols, crafting smart contracts, and ensuring the security and integrity of the blockchain network. Blockchain Developers are proficient in programming languages such as Solidity, Java, and C++, and they often work with decentralized applications (dApps). They collaborate with other tech professionals to create innovative solutions that leverage blockchain for various industries, including finance, supply chain, and healthcare. By staying updated with the latest trends and advancements in technology, Blockchain Developers play a crucial role in driving the adoption of blockchain solutions.
Exceptional Blockchain Developers possess a unique blend of technical and soft skills. Key qualities include:
Moreover, a passion for continuous learning and staying updated with the latest blockchain advancements is crucial for success in this rapidly evolving field.
Typical day rates for Blockchain Developers in Croatia 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 requires a combination of evaluating technical skills and understanding your project requirements. Start by reviewing their portfolio to assess prior work and successful projects. Look for specific experience related to your industry, such as financial services or supply chain management. During interviews, ask targeted questions about their approach to problem-solving and project management. A good developer will demonstrate creativity, adaptability, and a proactive mindset. Also, consider their communication style and cultural fit within your team, as these factors can significantly influence project success.
When interviewing a Blockchain Developer, consider asking these key questions:
These questions will help you gauge their expertise, problem-solving abilities, and potential for contributing to your project.
Hiring a Blockchain Developer in Croatia involves several strategic steps. First, determine the specific skills and experience you need for your project. Utilize platforms like Twine, where you can find a pool of talented freelancers. Create a detailed job description outlining your project goals, timelines, and budget. Once your job is posted, review applications and portfolios to shortlist candidates that match your criteria. Conduct interviews to assess their technical skills and cultural fit. Remember to check references and previous work to ensure you select the best talent for your project.
The primary difference between hiring a freelance Blockchain Developer and working with an agency lies in flexibility, cost, and support. Freelancers typically offer lower rates and greater flexibility in terms of project scope and timelines. They can be ideal for specific tasks or short-term projects. In contrast, agencies provide a broader range of services and a team of experts, ensuring comprehensive project management and support. Agencies often have established processes, which can lead to quicker turnaround times but may come at a higher cost. Ultimately, the choice depends on your project's complexity, budget, and desired level of collaboration.
A well-crafted project brief for a Blockchain Developer should include:
Providing comprehensive information will ensure you attract the right talent and streamline the hiring process.
Hiring on Twine is simple.
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