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
€3,600 – €9,700
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 responsible for designing and implementing blockchain-based solutions. Their primary tasks include developing smart contracts, creating decentralized applications (dApps), and ensuring the security and efficiency of blockchain networks. Blockchain Developers work with various programming languages such as Solidity, JavaScript, and Python. They also collaborate with other team members to integrate blockchain technology into existing systems, providing innovative solutions for businesses. Additionally, they keep up with the latest trends and advancements in the blockchain space to continuously improve their skills and knowledge.
Exceptional Blockchain Developers possess a unique combination of technical skills and soft skills. They have a strong understanding of blockchain architecture and cryptographic protocols. Additionally, they demonstrate problem-solving abilities, creativity, and adaptability to evolving technologies. Effective communication skills are crucial, as they often collaborate with non-technical stakeholders. Exceptional developers also exhibit a passion for continuous learning and staying updated on industry trends and regulations, ensuring they deliver cutting-edge solutions that meet clients' needs.
Typical day rates for Blockchain Developers in Portugal 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.
To recognize the perfect Blockchain Developer, assess their technical expertise and relevant experience. Look for a strong portfolio showcasing past projects, particularly those similar to your requirements. During interviews, evaluate their problem-solving abilities and approach to challenges. Pay attention to their communication skills, as clear dialogue is essential for successful collaboration. Additionally, consider their cultural fit within your team and their enthusiasm for your project, as these factors contribute to a productive working relationship.
When interviewing a Blockchain Developer, consider asking the following key questions:
These questions help gauge their expertise, problem-solving skills, and commitment to the field.
To hire a Blockchain Developer in Lisbon, Portugal, start by defining your project requirements and the specific skills needed. Utilize platforms like Twine to post your job listing, ensuring you highlight essential details like project scope, timeline, and budget. Network within local tech communities or attend blockchain events to find potential candidates. Consider looking for developers who have experience in similar projects or industries. Lastly, conduct thorough interviews to assess technical skills and cultural fit, ensuring they align with your project goals.
Hiring a freelance Blockchain Developer typically offers more flexibility and potentially lower costs compared to working with an agency. Freelancers can provide personalized attention and work closely with you, adapting to your project's specific needs. However, agencies often have a broader range of resources, including a team of experts with diverse skills, which can be beneficial for larger projects. Agencies may also provide additional support services, such as project management and ongoing maintenance, which can enhance project outcomes.
A comprehensive project brief for a Blockchain Developer should include the following elements:
Providing detailed information ensures candidates understand your expectations and can tailor their proposals accordingly.
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