05 Sep 2025
Job type
Full-time
Salary
USD$ 6,000 - USD$ 8,000
/ per month
Japanese Level
N4 level
Location
Chiyoda-ku
Job Description
Responsibilities
Horizen Labs is looking for a talented and self-motivated Full Stack Blockchain Developer with strong expertise in React.js, Next.js, Node.js, and Solidity. This role is ideal for someone who thrives in agile environments, loves building both frontend and backend Web3 solutions, and is excited to power a next-generation cyberpunk ninja metaverse.
About The Horizen Labs:
At The Horizen Labs, we’re building a next-generation cyberpunk ninja metaverse that blends AAA gaming, blockchain technology, and AI-driven gameplay. Our mission is to onboard millions of gamers into Web3 through seamless, engaging experiences across web, VR, and mobile. We foster a culture of creativity, transparency, and continuous improvement. Our team is remote-first, international, and united by the vision of empowering players through true digital ownership. We value teamwork, curiosity, and personal growth—and we provide the flexibility and support to make it happen.
Responsibilities:
Build engaging frontend experiences using React.js and Next.js with seamless wallet connectivity.
Develop and maintain backend services and APIs with Node.js/Express to power Web3 game features.
Integrate blockchain protocols into the gaming platform with a focus on scalability and security.
Implement reward systems, staking, and multi-chain asset transfers (Ethereum, Polygon, Arbitrum).
Collaborate with frontend and mobile teams to ensure seamless wallet connectivity and contract interactions.
Optimize gas efficiency, contract structure, and tokenomics implementations.
Monitor blockchain performance, implement security best practices, and respond to audits.
Maintain clear, comprehensive documentation and write clean, maintainable code.
Participate in code reviews, daily standups, sprint planning, and retrospectives.
Work Hours & Compensation:
Position Type: Full-time or Part-time
Weekly Commitment: 20–40 hours
Rate: $60–$90/hour (commensurate with experience)
Remote-friendly with flexible scheduling
Opportunities for long-term engagement and growth within the company
Our Hiring Process:
We aim to keep our hiring process transparent and efficient:
1. Technical Test – A short, practical challenge to assess your coding approach.
2. Technical Interview – Meet with a technical recruiter to discuss your experience and development process.
3. Project Feedback Review – Evaluate and provide input on a sample project or code.
4. Final Interview – A conversation with our CEO to align on culture, expectations, and long-term goals.
Ready to Join Us?
If you're a proactive developer who loves solving real-world problems and wants to help shape the future of fintech with a driven and friendly team—apply now with your resume, portfolio, and GitHub or project.
About The Horizen Labs:
At The Horizen Labs, we’re building a next-generation cyberpunk ninja metaverse that blends AAA gaming, blockchain technology, and AI-driven gameplay. Our mission is to onboard millions of gamers into Web3 through seamless, engaging experiences across web, VR, and mobile. We foster a culture of creativity, transparency, and continuous improvement. Our team is remote-first, international, and united by the vision of empowering players through true digital ownership. We value teamwork, curiosity, and personal growth—and we provide the flexibility and support to make it happen.
Responsibilities:
Build engaging frontend experiences using React.js and Next.js with seamless wallet connectivity.
Develop and maintain backend services and APIs with Node.js/Express to power Web3 game features.
Integrate blockchain protocols into the gaming platform with a focus on scalability and security.
Implement reward systems, staking, and multi-chain asset transfers (Ethereum, Polygon, Arbitrum).
Collaborate with frontend and mobile teams to ensure seamless wallet connectivity and contract interactions.
Optimize gas efficiency, contract structure, and tokenomics implementations.
Monitor blockchain performance, implement security best practices, and respond to audits.
Maintain clear, comprehensive documentation and write clean, maintainable code.
Participate in code reviews, daily standups, sprint planning, and retrospectives.
Work Hours & Compensation:
Position Type: Full-time or Part-time
Weekly Commitment: 20–40 hours
Rate: $60–$90/hour (commensurate with experience)
Remote-friendly with flexible scheduling
Opportunities for long-term engagement and growth within the company
Our Hiring Process:
We aim to keep our hiring process transparent and efficient:
1. Technical Test – A short, practical challenge to assess your coding approach.
2. Technical Interview – Meet with a technical recruiter to discuss your experience and development process.
3. Project Feedback Review – Evaluate and provide input on a sample project or code.
4. Final Interview – A conversation with our CEO to align on culture, expectations, and long-term goals.
Ready to Join Us?
If you're a proactive developer who loves solving real-world problems and wants to help shape the future of fintech with a driven and friendly team—apply now with your resume, portfolio, and GitHub or project.
Industry
IT
Salary
6000-8000 USD/ month
Requirements
Japanese Language Level Requirement
Simple conversation level(Equivalent of N4)
Work Experience Requirements
Required Skills and Qualifications:
Strong frontend experience: React.js and Next.js.
Backend development with Node.js/Express.
Smart contract development with Solidity.
Blockchain integration using Web3.js or Ethers.js.
Experience with NFTs (ERC-721/1155) and tokens (ERC-20).
Familiarity with DAO mechanics, DeFi protocols, and governance models.
Proficiency with relational and caching databases (PostgreSQL, Redis).
Understanding of security best practices and smart contract audits.
Strong problem-solving skills and attention to detail.
Excellent collaboration and communication skills.
Bonus Skills (Nice to Have):
Experience with cross-chain bridges and multi-chain deployments.
Knowledge of The Graph or other blockchain indexing tools.
Familiarity with IPFS for decentralized storage.
Experience with containerization and DevOps (Docker, Kubernetes).
Understanding of gaming tokenomics and blockchain-based reward systems.
Experience:
4–6+ years of professional development experience.
2–3+ years of hands-on blockchain development experience with Solidity.
Proven ability to deliver production-ready smart contracts and scalable backend systems.
Strong frontend experience: React.js and Next.js.
Backend development with Node.js/Express.
Smart contract development with Solidity.
Blockchain integration using Web3.js or Ethers.js.
Experience with NFTs (ERC-721/1155) and tokens (ERC-20).
Familiarity with DAO mechanics, DeFi protocols, and governance models.
Proficiency with relational and caching databases (PostgreSQL, Redis).
Understanding of security best practices and smart contract audits.
Strong problem-solving skills and attention to detail.
Excellent collaboration and communication skills.
Bonus Skills (Nice to Have):
Experience with cross-chain bridges and multi-chain deployments.
Knowledge of The Graph or other blockchain indexing tools.
Familiarity with IPFS for decentralized storage.
Experience with containerization and DevOps (Docker, Kubernetes).
Understanding of gaming tokenomics and blockchain-based reward systems.
Experience:
4–6+ years of professional development experience.
2–3+ years of hands-on blockchain development experience with Solidity.
Proven ability to deliver production-ready smart contracts and scalable backend systems.
Education Requirements
Bachelor’s degree in Computer Science, Engineering, or equivalent experience.
Features
Work Hours
40hrs/week
Visa requirement
Visa support (A work-eligible visa is not required when applying)
Job Benefit
Meals for Employees
Uniform Provided
Training Provided
Staff Discount Available
Transportation Allowance
Not covered
Trial Period
No
Short description
Full Stack Blockchain Developer
Recruitment Method
Direct Hiring
Base Salary Currency
USD$
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