Blockchain engineer

About the role

We are looking for a Senior Blockchain Engineer to build and scale our blockchain powered cross-border payment infrastructure. In this role, you will design secure smart contracts, integrate with multiple networks (Ethereum, Stellar, Solana, etc.), and collaborate with product and compliance teams to deliver high-performance financial products. If you have deep experience in blockchain architecture, wallet management and payment systems, and you thrive on solving complex security and scalability challenges, this is the role for you.

What you'll do

• Design, build, and maintain blockchain-powered payment infrastructure that enables 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.

Qualifications

• 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 experience.
• 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 working with one or more blockchain ecosystems such as: (Ethereum, Stellar, Polygon, Solana, Avalanche)
• Strong proficiency in smart contract development using languages such as 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.

Preferred Technologies

• Solidity
• Rust
• TypeScript / Node.js
• Smart Contract Security & Auditing
• Blockchain Nodes & Infrastructure
• Wallet Integrations
• Payment Systems
• Web3 APIs
• AWS / Cloud Infrastructure
• PostgreSQL / MongoDB
• Docker & Kubernetes

Opportunity

At Kredete, we are proud to be an equal opportunity employer. We value diversity and all applicants seeking employment with us are strictly based on merit, competency and qualifications. We do not discriminate based on religion, race, national origin, sexual orientation, sex, marital or family status, disability or gender.

Data Protection

By applying to this role, you consent to the collection and processing of your personal data by Kredete for the purposes of assessing your suitability for the advertised position. All personal data will be processed in accordance with applicable data protection laws.