Senior Software Engineer

WHAT YOU'LL DO

You will be embedded across one or more workstreams supporting digital payments engineering, with responsibilities that may include:

Scalability, Performance Testing & Validation

• Design and execute enterprise-grade performance testing strategies for payment processing services, defining frameworks, tooling, and success criteria from the ground up.
• Identify performance bottlenecks across legacy and modern service layers and drive measurable improvements through analysis and targeted optimization.
• Instrument and validate services running on Java, Oracle, Tomcat, and WebSphere as well as modern workloads running on PostgreSQL and OpenShift.
• Collaborate with backend engineers to ensure scalability requirements are met across all environments prior to release.
• Translate performance findings into clear recommendations for engineering leads and stakeholders.

Application Engineering

• Build and maintain full-stack backend services supporting card network integration, working primarily in Java with PostgreSQL and OpenShift Container Platform (OCP).
• Contribute to application modernization efforts, migrating and re-platforming services from legacy infrastructure to cloud-native environments.
• Leverage AI-assisted development tooling (including GitHub Copilot) to improve development velocity and code quality.
• Participate in code reviews, architectural discussions, and cross-team technical planning sessions.

General Engineering

• PCI data purging pipelines and event-driven architecture patterns including token removal and event consumption.
• Work with event-driven services running on OpenShift and Oracle and PostgreSQL backends to support data lifecycle and compliance requirements.
• Serve as a flexible, senior contributor across teams where engineering depth and experience are needed most.

REQUIRED SKILLS & EXPERIENCE

Core Engineering

• 5+ years of professional software engineering experience, primarily in Java.
• Strong working knowledge of relational databases — Oracle and/or PostgreSQL required.
• Experience deploying and operating services in containerized environments (OpenShift, Kubernetes, or equivalent).
• Familiarity with legacy enterprise application servers — Tomcat and/or WebSphere experience a plus.

Performance Engineering

• At least one enterprise-level performance testing engagement — defining strategy, selecting tooling, executing tests, and presenting findings.
• Experience with performance profiling, load testing, and bottleneck resolution in high-throughput systems.