Senior Software Engineer (Java)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Engineer (Java) based in the United States.

This role sits at the core of a major digital payments modernization initiative, where you will help bridge the gap between legacy financial systems and modern cloud-native architectures. You will contribute directly to the reliability and scalability of mission-critical payment platforms that process high-volume transactions across major financial institutions. The environment blends deep backend engineering with performance optimization and systems modernization at enterprise scale. You will work across Java-based services, distributed systems, and containerized environments while supporting migration efforts toward cloud-native infrastructure. The role offers significant exposure to payments architecture, event-driven systems, and large-scale system integration. You will collaborate with cross-functional engineering teams in a fast-moving, highly technical, and mission-critical domain. This is a hands-on senior engineering position with both immediate impact and long-term architectural influence.

Accountabilities:

You will design, build, and optimize backend systems supporting large-scale digital payments infrastructure, with a strong focus on performance, scalability, and modernization.

Develop and maintain Java-based backend services supporting card network integration and enterprise payment flows.
Design and execute enterprise-level performance testing strategies, including load testing frameworks, tooling, and validation criteria.
Identify and resolve performance bottlenecks across legacy and modern systems, improving throughput and reliability.
Work with relational databases such as Oracle and PostgreSQL to support high-volume transactional workloads.
Contribute to application modernization initiatives, including migration from legacy systems to cloud-native environments using OpenShift or Kubernetes.
Support event-driven architecture patterns, including PCI-related data lifecycle processes and secure data handling workflows.
Participate in code reviews, architecture discussions, and cross-team technical planning for large-scale engineering programs.

Requirements:

You bring strong backend engineering experience in Java, with a background in distributed systems, performance optimization, and enterprise-scale applications.

5+ years of professional software engineering experience with a strong focus on Java development.
Experience with relational databases such as Oracle and/or PostgreSQL in production environments.
Hands-on experience deploying applications in containerized environments (OpenShift, Kubernetes, or similar).
Proven experience in performance engineering, including load testing, profiling, and bottleneck resolution.
Familiarity with legacy enterprise systems such as Tomcat and/or WebSphere is a plus.
Experience in payments, financial services, or card processing systems is strongly preferred.
Understanding of PCI compliance and secure data handling practices in regulated environments.
Strong communication skills with the ability to translate technical complexity for diverse stakeholders.
Ability to operate effectively in large-scale, cross-functional, and fast-changing engineering environments.

Benefits:

Competitive compensation package aligned with experience and seniority
Flexible work arrangements (remote-based within the United States)
Professional development opportunities in large-scale fintech and payments systems
Exposure to modern cloud-native technologies and enterprise modernization programs
Collaborative engineering culture focused on innovation, learning, and technical excellence
Opportunity to work on mission-critical financial infrastructure impacting major institutions
Career growth in architecture, performance engineering, and distributed systems at scale.

How Jobgether works:

We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team.

We appreciate your interest and wish you the best!

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Senior Software Engineer (Java)

Requirements:

Benefits:

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