Blockchain Engineer

As a Blockchain Engineer at Kredete, you build and scale blockchain-powered cross-border payment infrastructure for African immigrants in the diaspora and businesses. You design secure smart contracts, integrate with multiple blockchain networks (Ethereum, Stellar, Solana, and others), and collaborate with product and compliance teams to deliver high-performance financial products. In this role, you solve complex security and scalability challenges while architecting wallet management and payment systems.

What you'll do

• Design, build, and maintain blockchain-powered payment infrastructure enabling secure and efficient cross-border transactions
• Manage the architecture and development of scalable blockchain systems, ensuring high availability, performance, and reliability
• Develop, deploy, and maintain smart contracts across multiple blockchain networks
• Integrate blockchain technologies with internal payment systems, wallets, custodians, and third-party financial services
• Collaborate closely with product managers, backend engineers, frontend developers, compliance teams, and other stakeholders to deliver blockchain-enabled financial products
• Implement robust security controls and conduct smart contract reviews, audits, and vulnerability assessments
• Design and optimize transaction workflows, wallet management systems, and on-chain/off-chain reconciliation processes
• Monitor and improve blockchain infrastructure, node operations, transaction processing, and network performance
• Stay current with emerging blockchain technologies, protocols, standards, and industry best practices
• Work with wallet providers, custodians, liquidity partners, and multiple blockchain protocols to support global payment operations

What you bring

• Bachelor's or Master's degree in Computer Science, Engineering, or a related technical field
• 5+ years of professional software engineering experience, including significant hands-on blockchain development
• Strong experience building blockchain-based financial products, payment systems, remittance platforms, or digital asset infrastructure
• Deep understanding of blockchain architectures, consensus mechanisms, cryptographic principles, and distributed systems
• Experience with one or more blockchain ecosystems such as Ethereum, Stellar, Polygon, Solana, or Avalanche
• Strong proficiency in smart contract development using Solidity, Rust, or equivalent blockchain programming languages
• Experience integrating blockchain networks with wallets, exchanges, custodial solutions, and payment providers
• Strong knowledge of blockchain security, key management, wallet architecture, transaction signing, and secure development practices
• Experience designing and deploying production-grade, highly scalable blockchain systems
• Strong understanding of APIs, backend systems, databases, and cloud infrastructure
• Excellent problem-solving, debugging, and analytical skills
• Strong communication skills with the ability to explain technical concepts to both technical and non-technical stakeholders

Nice to have

• Experience building stablecoin, remittance, treasury, or digital asset payment products
• Experience integrating blockchain infrastructure into traditional financial systems and banking workflows
• Knowledge of Web3 technologies, decentralized identity, tokenization, and digital asset compliance frameworks
• Experience with institutional custody, MPC wallets, or digital asset security platforms
• Experience with blockchain analytics, monitoring, and transaction risk tools
• Contributions to open-source blockchain projects or active participation in the blockchain ecosystem
• Prior experience working in fintech, payments, banking, remittance, or financial services
• Proficiency in TypeScript, Node.js, AWS, PostgreSQL, MongoDB, Docker, or Kubernetes

What we offer

• Compensation plus equity-linked incentive package
• Opportunity to help shape the future of cross-border financial infrastructure
• High-impact role with direct visibility into company growth and strategy
• Small, high-performing teams with strong ownership and autonomy
• Fast execution environment with meaningful career growth opportunities
• Exposure to global markets, fintech innovation, and emerging payment systems
• Collaborative and mission-driven culture

About Kredete

Kredete is a financial technology platform that helps African immigrants in the diaspora build credit through instant international money transfers to over 22 countries with low fees. The company also offers businesses an API-based infrastructure for secure and low-cost cross-border payments to many African countries. The role is based in Lagos, Nigeria.