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Hire expert blockchain developers in San Francisco, US

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We have over 14,500 blockchain developers who've worked in many different industries and cover various styles and skillsets.
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Trusted by companies around the world

"Daniel Koh was a pleasure to work with. As a senior engineer in Solana, he demonstrated deep expertise and professionalism. I highly recommend him and would gladly collaborate again."
Louis @ Elm Tech
Feb 1, 2026
"Kazunari delivered everything faster than expected. Very skilled React developer who understands modern frontend patterns for Chatbot and Dashboard KPI’s. Flexible with feedback and easy to collaborate with"
James @ Self Employeed
Jan 21, 2026
"Tomoya Nakano was great to work with. He understood my requirements exactly and all work was delivered on time."
Bajram @ Useni Co Ltd
Jan 20, 2026
"victor is a very great person to work with and i will work with him again and again if you will permit me i will give me 5 shining star"
victor @ shopify
Dec 22, 2025
"Working with Pandi was a game-changer. The Galaxy Quest Game exceeded our expectations with smooth gameplay and stunning graphics. Highly recommend for any gaming project."
Samuel @ PixelWorks Ltd
Dec 20, 2025
"Steven delivered exceptional work on our AWS Connection project involving extensive Node.js integration. From the start, he demonstrated strong technical expertise, quickly understanding the system architecture and identifying the best approaches to implement and optimize our cloud workflows. His communication was clear..."
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Joe @ Aiseed technology Inc
Dec 6, 2025
"Working with Twine enabled us to scale projects quicker than before and the Twine Business makes it so easy to manage and pay contractors over the world."
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CEO, J B Cole
"I found an amazing designer and she's fast. I now send her my ideas and she transforms them into great design. The collaboration is fast, professional and easy. It feels like she is already part of our team."
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-Achim Kohli
CEO, Legal-i
5 star reviews

Clients Rate Twine Blockchain Developers

5

/ 5.0

on average across

83
83

reviews as of February 6, 2026

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From the blog

Frequently Asked Questions

What does a Blockchain Developer do?

A Blockchain Developer specializes in creating and implementing blockchain-based solutions. Their primary responsibilities include designing blockchain architecture, developing smart contracts, and ensuring the security of blockchain systems. They work with various technologies and programming languages such as Solidity, JavaScript, and Python to build decentralized applications (dApps) and enhance existing blockchain infrastructures. Additionally, they collaborate with other developers and stakeholders to assess project requirements and deliver tailored solutions that meet business objectives, ensuring that the applications are scalable, secure, and user-friendly.

How to hire a Blockchain Developer in San Francisco, US?

Hiring a Blockchain Developer in San Francisco involves several steps. Start by defining your project needs, including the specific skills and experience required. Next, create a detailed job posting outlining the project scope, timeline, and budget. Leverage platforms like Twine to connect with skilled professionals. It's essential to review portfolios and client feedback to assess potential candidates. You may also consider conducting interviews to evaluate their technical skills and cultural fit. Finally, ensure clear communication of your expectations and project requirements to ensure successful collaboration.

How much does it cost to hire a Blockchain Developer in San Francisco, US?

The cost of hiring a Blockchain Developer in San Francisco varies based on experience levels:

  • Beginner: $50 - $80 per hour
  • Junior: $80 - $120 per hour
  • Mid-level: $120 - $180 per hour
  • Senior: $180 - $250 per hour
  • Expert: $250 - $400+ per hour

These rates reflect the competitive market in San Francisco, where the demand for blockchain expertise is high. It's important to align your budget with the complexity of your project and the required skill set.

What qualities set exceptional Blockchain Developers apart from the rest?

Exceptional Blockchain Developers possess a unique blend of technical expertise and soft skills. Key qualities include:

  • Strong understanding of blockchain technology and protocols
  • Proficiency in relevant programming languages
  • Problem-solving and analytical skills
  • Attention to detail and commitment to security
  • Effective communication skills for collaboration
  • Adaptability to evolving technologies and trends

These attributes enable them to navigate complex projects, deliver innovative solutions, and work effectively within teams.

How do you recognize the perfect Blockchain Developer in San Francisco, US for your needs?

To recognize the perfect Blockchain Developer, start by evaluating their technical skills and experience through their portfolio and past projects. Look for demonstrated expertise in relevant technologies and frameworks. Additionally, consider their problem-solving abilities and how they approach challenges. Effective communication and collaboration skills are essential for successful teamwork. Conducting thorough interviews can help gauge their cultural fit and passion for blockchain technology. Lastly, checking client testimonials and reviews can provide insights into their work ethic and reliability.

What are the key questions to ask in a Blockchain Developer interview?

When interviewing a Blockchain Developer, consider asking the following key questions:

  • What blockchain platforms and technologies are you most familiar with?
  • Can you describe a challenging blockchain project you completed and your role in it?
  • How do you ensure the security of blockchain applications?
  • What strategies do you use for debugging and testing smart contracts?
  • How do you keep up with the latest trends and developments in blockchain technology?

These questions will help you assess their technical knowledge, experience, and adaptability to the rapidly evolving blockchain landscape.

What’s the difference between hiring a freelance Blockchain Developer and working with an agency in San Francisco, US?

Hiring a freelance Blockchain Developer offers flexibility, often at a lower cost compared to agencies. Freelancers can provide personalized attention and tailored solutions, making them ideal for short-term or niche projects. However, agencies typically offer a broader range of services and resources, including a team of experts for larger projects. They often provide a structured workflow, project management support, and additional services like marketing or design. Your choice will depend on the project's scope, budget, and required expertise.

What should be in a Blockchain Developer project brief / job description?

A comprehensive project brief for a Blockchain Developer should include:

  • Project Overview: A brief description of the project and its goals.
  • Technical Requirements: Specific skills, programming languages, and technologies needed.
  • Timeline: Estimated start date, milestones, and project deadline.
  • Budget: Clear budget range for the project.
  • Deliverables: Detailed list of expected outcomes and deliverables.
  • Communication: Preferred methods and frequency of updates.

This clarity helps attract the right candidates and ensures alignment on project expectations.

How do I hire a Blockchain Developer in San Francisco, US on Twine?

Hiring on Twine is simple.

  1. Post a job with your project details, timeline, and budget.
  2. Browse portfolios of vetted Blockchain Developers and invite those who match your needs.
  3. Receive proposals and compare experience, pricing, and reviews.
  4. Communicate expectations, set milestones, and finalize the hire.
  5. Securely pay through Twine, ensuring protection for both parties. Twine connects you with top freelance Blockchain Developers, making it easy to find the perfect creative professional for your project.

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