Senior Blockchain Developer

Senior Backend Engineer (Blockchain & Payments Focus)

📍 Location: Hybrid — 2 days on-site, 3 days remote

About the Role

We are seeking a Senior Backend Engineer with a strong background in backend development, distributed systems, and blockchain technologies. You will play a crucial role in building scalable, high-performing solutions across APIs, orchestration layers, third-party integrations, and payment ecosystems.

This is a hybrid role requiring two days per week in the office, offering the flexibility of remote work combined with valuable in-person collaboration.

Key Responsibilities

• Design, develop, and maintain scalable backend systems using Java, JavaScript, and NodeJS
• Build and optimize high-availability distributed systems including APIs, orchestration layers, monitoring, and alerting components
• Ensure secure, robust, and efficient software delivery through adherence to the Secure Software Development Life Cycle (SSDLC)
• Implement and optimize CI/CD pipelines, including version control, unit testing, and performance testing
• Integrate blockchain technologies (both public and permissioned) into backend systems: Bitcoin, Ethereum, Hyperledger, and DeFi applications
• Collaborate cross-functionally with Product, Compliance, and Operations teams to deliver payment solutions that meet regulatory and security requirements
• Rapidly learn and adopt new technologies to solve complex backend and distributed ledger challenges
• Participate in full-stack development initiatives where needed (full-stack experience is a plus)
• Influence system architecture decisions and champion best practices across the engineering team
• Foster strong relationships across business, technical, and leadership stakeholders through effective communication and facilitation

Required Qualifications

• 5+ years of backend software engineering experience with a Bachelor’s Degree OR 4+ years with an Advanced Degree (e.g., Master’s, MBA, JD, MD)
• Strong hands-on experience with Java, JavaScript, and NodeJS
• Solid experience building scalable, distributed systems with APIs, orchestration, integrations, monitoring, and high-availability mechanisms
• Expertise across Secure Software Development Life Cycle (SSDLC) processes: version control, CI/CD, unit testing, and performance testing
• Practical experience working with blockchain technologies: Bitcoin, Ethereum, Hyperledger, DeFi applications, private key security, and distributed ledgers
• Payments and financial services compliance knowledge, including understanding of payment ecosystems and payment processing flows
• Excellent interpersonal, leadership, and communication skills; ability to present complex technical concepts clearly and build trusted relationships
• Highly motivated, proactive, and fast learner of emerging technologies and complex domains