Payments Platform Engineer - Java/.NET & API Integration

Phaxis; New York (NY); On-site; USD 110,000 - 160,000; Full time

Job summary

Phaxis is seeking a proficient software engineer to design, develop, and maintain scalable payment applications and services using Java and .NET. The role spans payments across SWIFT, Fed, ACH, and other channels with a focus on secure, reliable processing.

You will build APIs, microservices, and integrate third-party platforms while upholding strong security and data protection standards. Collaborating with product, architecture, QA, and business stakeholders, you will translate complex

Responsibilities

• Design, develop, and maintain scalable payment applications and services using Java and .NET.
• Develop and support payment solutions across SWIFT, Fed, ACH, and other global internal and external payment channels, ensuring reliable and secure transaction processing.
• Build and enhance payment processing capabilities supporting transactions, payment integrations, authorization, settlement, and reconciliation.
• Develop and integrate RESTful APIs, microservices, and third-party payment platforms to support seamless payment processing and connectivity.
• Implement strong security, encryption, authentication, and data protection practices to safeguard sensitive payment and customer information.
• Collaborate with product managers, architects, QA teams, and business stakeholders to translate complex payments requirements into scalable technical solutions.
• Troubleshoot production issues, analyze transaction failures, and optimize applications for performance, scalability, reliability, and availability.
• Participate in code reviews, automated testing, CI/CD, and Agile development practices while staying current with payments technologies, industry standards, and emerging global payment trends.

Job description

Phaxis is seeking a proficient software engineer to design, develop, and maintain scalable payment applications and services using Java and .NET. The role spans payments across SWIFT, Fed, ACH, and other channels with a focus on secure, reliable processing.

You will build APIs, microservices, and integrate third-party platforms while upholding strong security and data protection standards. Collaborating with product, architecture, QA, and business stakeholders, you will translate complex