React Jobs in Web3

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Job Position Company Posted Location Salary Tags

Fuel Labs

Brazil

$87k - $87k

Bullet

Singapore, Singapore

$120k - $170k

Bitso

Latin America

$106k - $114k

Polymarket

New York, NY, United States

$180k - $220k

Bitgo

Remote

$150k - $180k

Bitgo

Remote

$160k - $200k

zeroShadow

Remote

Ethereum Foundation

United States

Crossmint

Spain

$122k - $150k

Paena | YC W26

San Francisco, CA, United States

$150k - $200k

Token Metrics Inc.

London, United Kingdom

$28k - $38k

Token Metrics Inc.

London, United Kingdom

$28k - $38k

Bitso

Latin America

$87k - $97k

Alpaca

Remote

$87k - $109k

Quantstamp is building next-generation security products that combine AI reasoning, automation, and human expertise. We’re looking for a Full-Stack Engineer to join us on the product side — someone who can move fast, think like a builder, and help turn ideas into real tools that make software systems safer and smarter.

You’ll be working across the stack to prototype, design, and deliver AI-driven products, from web apps to internal tools in close collaboration with AI researchers, auditors, and security engineers. This role is perfect for an engineer with a startup mindset who enjoys wearing multiple hats and thrives in fast-moving environments.


Candidate Profile

  • Background in Computer Science or related field
  • 5+ years of full-stack development experience building high-performance, large-scale applications using technologies such as NextJS, React, Electron and Python
  • Possesses a deep understanding and independent perspectives on AI agents and LLMs.
  • Experience building LLM applications using AI/ML frameworks and libraries (e.g., LangChain, OpenAI SDK).
  • Develop backend services and APIs using Python, Node.js, and TypeScript.
  • Design and implement intuitive, responsive front-end web interfaces using React and Next.js.
  • Familiarity with blockchain and smart contract environments, including libraries such as wagmi.js and ethers.js, and experience interacting with smart contracts.
  • Comfortable with CI/CD pipelines, monitoring, and cloud platforms like AWS and Heroku
  • Experience with SQL/Postgres
  • Detail-oriented mindset, willingness to learn, and quality-driven personality
  • Fluent English communication, both written and spoken
  • Partial overlap, at least 4 hours per workday, with SGT.
Nice to Have

  • 1+ years experience in creating DeFi applications
  • Experience in cybersecurity and whitebox auditing
  • Fluent mandarin communication, both written and spoken
Compensation & Perks

  • A competitive salary that matches your experience, plus performance bonuses and token grants
  • Work from anywhere, 100% remote, and flexible working hours
  • Generous paid time off, including maternity/paternity leave
  • Retirement/pension plan
  • Free gym membership, or any virtual alternative of your choice
  • Rent your own desk in a co-working space or work from anywhere at any time.
  • Join all-expenses-paid retreats in exotic/exclusive locations with the team

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Apply Now

What does a React developer in web3 do?

A React developer in the context of web3 is a developer who is using the React JavaScript library to build user interfaces for decentralized applications (dApps) that run on the Ethereum blockchain

These dApps often use smart contracts to facilitate transactions and other interactions on the Ethereum network

Overall, the role of a React developer in web3 involves using your skills in React development to help build cutting-edge decentralized applications that leverage the power of the Ethereum blockchain

As a React developer in web3, some of your responsibilities might include:

  • Integrating the dApp with the Ethereum blockchain. This might involve using tools like web3.js and Ethers.js to connect to the Ethereum network and interact with smart contracts.
  • Building the user interface for a dApp using React. This could involve creating components for the various elements of the dApp, such as buttons, forms, and other input elements.
  • Implementing features that are specific to decentralized applications, such as handling cryptocurrency transactions and displaying data from the blockchain in a user-friendly way.
  • Collaborating with other members of the development team, such as blockchain engineers and designers, to ensure that the dApp functions properly and meets the needs of the end users.