- Location
- Valencian Community, Valencia
- Workplace
- Remote
- Type
- Full-time
- Department
- Engineering
- Seniority
- Senior
- Experience
- 6+ years
- Source
- Freshteam
Description
Dear applicants, please keep in mind that applications without provided salary expectations and active LN profile will not be considered.
Hope for your understanding.
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
Skills
JavaAWSAzureGCPSQLMicroservices