Job Description
Role Summary
We are building a digital asset platform focused on simple, reliable crypto transactions for users across Africa.
We are looking for a FullStack/Senior Backend Engineer who can maintain and extend our crypto wallet infrastructure, manage API integrations with blockchain services, and ensure reliable transaction processing across multiple digital assets.
Key Responsibilities
• Develop and maintain backend services for a crypto transaction platform
• Manage blockchain integrations for assets such as BTC, ETH, TRON, and others
• Build and maintain secure API endpoints for wallet operations (deposit, withdrawal, balance checks)
• Integrate third-party blockchain infrastructure providers where required
• Ensure transaction reliability and proper error handling across blockchain networks
• Maintain documentation for APIs and backend infrastructure
• Collaborate with frontend engineers to support mobile app integrations
• Monitor system performance and improve scalability of backend services
• Implement security best practices for digital asset handling
Requirements
• Strong backend development experience (Node.js / TypeScript preferred)
• Experience building REST APIs and backend services
• Understanding of wallet infrastructure and transaction flows
• Familiarity with blockchain networks such as Bitcoin, Ethereum, or TRON
• Experience integrating third-party APIs or blockchain service providers
• Good understanding of backend security practices
• Experience working with databases (PostgreSQL, MongoDB, etc.)
• Ability to write clear technical documentation
• Must be comfortable working in a startup environment with structured timelines, documentation, and weekly deliverables.
Nice to Have
• Experience with crypto exchanges, wallets, or fintech platforms
• Experience with blockchain nodes or RPC integrations
• Familiarity with Web3 libraries (web3.js, ethers.js)
• Experience with wallet security or multisig infrastructure
• DevOps experience (Docker, cloud infrastructure)
Engagement Type
• Contract or project-based role (with potential for long-term engagement)
• Remote role
• Initial focus on completing and stabilizing backend infrastructure for a live mobile crypto application
Job Types: Full-time, Contract
Contract length: 3 months
Pay: ₦250,000.00 - ₦400,000.00 per month
Application Question(s):
• Have you worked on a fintech or crypto-related backend system before?
• Which blockchain networks have you integrated with or interacted with?
• Which backend stack are you most comfortable with?
• Have you built or maintained a wallet or transaction infrastructure before?
• Can you start immediately if selected?
Work Location: Remote
