Java Jobs in Web3

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Job Position Company Posted Location Salary Tags

Swoon

San Francisco, CA, United States

$134k - $144k

Binance

Hong Kong, Hong Kong

Crypto.com

Kuala Lumpur, Malaysia

$106k - $114k

Kforce Inc

Mountain View, CA, United States

$89k - $121k

Intime Infotech Inc

Irvine, CA, United States

$91k - $96k

Crypto.com

Hong Kong, Hong Kong

$106k - $107k

Blockchain

Remote

$75k - $85k

B2c2

Remote

$94k - $96k

Binance

Bangkok, Thailand

RoofStacks

İstanbul

$106k - $109k

Zscaler

Remote

$144k - $210k

Zscaler

Remote

$95k - $110k

Falconx

Remote

$90k - $115k

Binance

Hong Kong, Hong Kong

Animoca Brands Limited

Hong Kong, Hong Kong

$72k - $90k

Swoon
$134k - $144k
San Francisco Bay Area US
Apply

Lead Blockchain Engineer (Web3/Decentralized Identity) - Start Up

Onsite - Bay Area OR Irvine, CA

3-months contract to hire

$70-$75/hr (Equity included)


We are seeking an experienced and innovative Lead Blockchain Engineer to drive the development of a next-generation decentralized ecosystem that integrates identity, payments, and real-world utility. This role is for a highly experienced engineer who is passionate about creating secure, scalable, and human-centric Web3 infrastructure.


Key Responsibilities

  • Design, build, and maintain Layer 1 blockchain protocols, smart contracts, and distributed systems that power our core digital ecosystem.
  • Develop tokenized payment systems and identity verification flows, ensuring maximum security, usability, and data privacy.
  • Implement and audit smart contracts for token utility, governance, and transactional logic across various business sectors.
  • Integrate advanced identity verification methods and payment processing into decentralized applications.
  • Ensure the security, scalability, and efficiency of all blockchain systems through rigorous testing, code audits, and adherence to industry best practices.
  • Partner closely with Product, Engineering, and QA teams to align blockchain development with the overall company roadmap and evolving user needs.
  • Mentor junior engineers, contribute to engineering best practices, and help establish high standards for decentralized development.
  • Stay ahead of emerging trends in Web3, DeFi, Real-World Asset (RWA) tokenization, and decentralized identity to guide future innovation and strategy.

Required Qualifications

  • Education: Bachelor’s or Master’s degree in Computer Science, Cryptography, or a related technical field.
  • Experience: 5+ years of hands-on blockchain development experience across protocols, dApps, Layer 1/Layer 2, or DeFi/Web3 projects.
  • Proficiency: Expert-level proficiency in Java and Solidity.
  • Deep Technical Knowledge: Strong understanding of smart contract security, advanced cryptography, and distributed system design.
  • Platform Experience: Experience working with Ethereum, Solana, or other major blockchain platforms.
  • Track Record: Proven ability to deliver high-quality, production-grade blockchain systems.
  • Work Authorization: Must be legally authorized to work in the United States. (We do not sponsor work visas at this time.)

What does a Java developer in web3 do?

A Java developer in web3 would likely be focused on developing applications that use the Java programming language in the context of the web3 technology stack

Web3 is a collective term used to refer to the next generation of decentralized, blockchain-based technologies that are aimed at creating a more open and secure internet

In this context, a Java developer would be responsible for writing code that interacts with web3 technologies, such as decentralized applications (DApps) and smart contracts, to create new tools and services that run on the blockchain

This could involve working with cutting-edge technologies such as Ethereum, which is a popular blockchain platform that uses the Java programming language, as well as other web3 technologies and frameworks.