Results-driven Fullstack Developer with over 5 years of experience building and scaling web applications for startups and large companies. Expertise in AWS cloud technolo...
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Results-driven Fullstack Developer with over 5 years of experience building and scaling web applications for startups and large companies. Expertise in AWS cloud technolo...
See MoreI'm a passionate and results-driven Full-Stack Developer with over 26 months of intensive development experience. I specialize in modern JavaScript, scalable web applicat...
See MoreI am a dedicated software developer with over 17 years of experience in mobile and web development. My primary focus is Flutter and front-end technologies, and I thrive o...
See MoreI am a Computer Engineering graduate with a strong focus on systems and blockchain engineering. I've maintained a production Layer-1 PoW node in Rust and have experience ...
See MoreI'm Gyorgy Tibor, a self-taught full-stack developer from Bucharest (Bucuresti), Romania. I specialize in building scalable web applications with Next.js and React, using...
See MoreI'm Cristina Lare, a self-taught full-stack developer who landed my first role six months after starting to code—and now have four years building and shipping production ...
See MoreFrom breaking toys with a screwdriver at 7 to building janky consoles, websites, ISPs, and game servers as a teen, I've always learned by taking tech apart. After 18 y...
See MoreI am a Senior Full Stack Engineer with 8+ years of experience, specializing in React, Node.js, Web3, and AI. I design scalable, high-performance applications and lead cro...
See MoreHi, I’m Andrei Stoica, a senior front-end developer with over a decade of experience delivering premium, conversion-focused web interfaces for enterprise and digital prod...
See MoreHi, I'm Razvan Stirbu, a third-year Applied Informatics student with a solid foundation in computer science and software engineering. I'm passionate about building robust...
See MoreStrategic Web3 Business Developer passionate about building partnerships, ecosystems, and user growth in the crypto space. Since 2021, I’ve been deeply involved in DeFi, ...
See MoreAs an ex-semi-professional esports player with a deep passion for technology dating back to my teenage years, I am on the lookout for opportunities that will enable me to...
See MoreWe 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 83 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
lei14,500 – lei39,000
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 responsible for designing, implementing, and maintaining blockchain solutions. They work on the architecture of blockchain systems, develop smart contracts, and ensure the security of blockchain platforms. Key tasks include:
Overall, Blockchain Developers play a critical role in driving innovation and efficiency in various sectors, including finance, supply chain, and healthcare.
To hire a Blockchain Developer in Romania, start by defining your project requirements and technical needs. This includes understanding the specific skills required, such as knowledge of Ethereum, Hyperledger, or smart contract development. Next, create a detailed job description that outlines the responsibilities and expectations. You can use platforms like Twine to find vetted professionals by:
Ensure you conduct thorough interviews and check references to find the right fit for your project.
The cost of hiring a Blockchain Developer in Romania varies based on experience levels:
These rates can fluctuate depending on the project's complexity, the developer's skill set, and market demand.
Exceptional Blockchain Developers possess a combination of technical expertise and soft skills. Key qualities include:
These qualities ensure that a developer can deliver high-quality, secure, and scalable blockchain solutions.
To identify the perfect Blockchain Developer in Romania, consider the following criteria:
Conducting detailed interviews and technical assessments can further help in recognizing the right fit for your project.
When interviewing a Blockchain Developer, consider asking the following key questions:
These questions will help you assess their expertise and problem-solving abilities effectively.
Hiring a freelance Blockchain Developer typically offers flexibility and cost-effectiveness, as freelancers often have lower overheads than agencies. Additionally, you can directly communicate with the developer and have more control over the project. However, working with an agency provides access to a team of experts with diverse skills, which can be beneficial for larger projects. Agencies often offer more structured processes and may provide additional services such as project management and quality assurance. Ultimately, the choice depends on your project scope, budget, and preferred working style.
A well-crafted project brief or job description for a Blockchain Developer should include the following elements:
Clear and detailed project briefs help attract suitable candidates and set the right expectations from the start.
Hiring on Twine is simple.
Post your project and meet your expert within 24 hours. Over 45,000+ high growth companies that trust Twine.