Senior Software Engineer (Java / Payments Infrastructure) (Remote)

We are hiring Senior Software Engineer to extend and scale a global blockchain and payments infrastructure platform supporting the tokenization of value worldwide. This role focuses on building secure, reliable microservices and APIs that bridge traditional banking systems with blockchain protocols. You will design and own production-grade backend systems that move value across multiple financial rails, including bank transfers and digital asset networks. The position requires strong Java expertise, deep experience with scalable system design, and a solid understanding of payment architectures. You will collaborate closely with Product and Engineering teams to deliver high-quality, secure, and compliant financial services. This is a fully remote opportunity for US-based engineers with strong Pacific Time overlap.

Details

Location: US – Fully Remote (strong preference for PT / West Coast overlap)

Work Model: Remote

Employment Type: Full-time

Industry: Financial Technology / Blockchain Infrastructure

Start Date: ASAP

Key Responsibilities

Extend and enhance blockchain-based financial infrastructure systems

Build and own scalable microservices responsible for secure value transfer APIs

Design, develop, and maintain RESTful APIs for payments and digital asset operations

Integrate systems with banking rails and financial institutions

Write infrastructure supporting payment experiences, including databases, messaging systems, and APIs

Troubleshoot system issues and optimize for reliability and performance

Collaborate with Product and cross-functional stakeholders on architecture and system principles

Maintain strong coding standards, test coverage, and continuous delivery practices

Requirements

6+ years of professional software development experience

Strong expertise in Java (preferred primary language)

Experience leading small teams technically (architecture and system design)

Experience building scalable microservices architectures

Solid understanding of RESTful API design principles

Experience with payment systems (credit cards, bank transfers, financial rails)

Experience with cloud platforms (AWS, GCP, or Azure)

Strong SQL database design and schema modeling skills

Experience designing and deploying production-quality software

Strong focus on code quality, testing, and reliability

Bachelor’s degree in Computer Science or equivalent experience

Nice to Have

Experience in blockchain or Web3 environments

Experience with Go

Experience in high-availability, financial-grade systems