Skills

Communication Java SQL Strategic Planning

Job Specifications

Title: Senior Java Engineer – Payment Systems

Job Type: Contract

Contract Length: Contract through 2026, possible extensions/renewals

Pay Range: $75-$90/hr

Location: 100% Remote

About The Opportunity

Our client, a leader in Banking Solutions and Financial Services, is looking for a skilled Senior Java Engineer – Payment Systems to join their team for a long-term engagement. This project involves stabilizing and supporting a mission-critical, in-house legacy payment processing system while contributing to the strategic planning for its next-generation redesign. This is a high-impact role that requires a highly detail-oriented, patient, and self-motivated professional who can focus on code quality, operational stability, and reliability in a fast-paced environment.

Key Responsibilities & Deliverables

This role is focused on the successful completion of specific tasks and deliverables. Your responsibilities will include:

Maintain and support a legacy Java-based payment processing system.
Perform code reviews, identify defects, and reduce rollback incidents.
Audit existing codebase for quality, security, and performance improvements.
Utilize tools such as Snyk to identify and remediate vulnerabilities.
Create and maintain technical documentation for system components and processes.
Partner with internal stakeholders to support planning efforts for a future system redesign (Version 2).

Required Skills & Experience:

We are looking for someone with a proven track record of successful contract engagements. The ideal candidate will have:

Strong experience with Java and SQL in production environments.
Deep expertise in supporting or maintaining legacy systems. This isn't a learning role—you need to be a subject matter expert.
Experience with payment processing systems or financial transaction platforms.
Proven ability to conduct thorough code reviews and enforce coding standards.
Familiarity with application security tools (e.g., Snyk or similar).
Experience working in on-premise infrastructure environments.
Demonstrated ability to work autonomously and manage your own time effectively to meet project goals.
Strong communication skills with a focus on influence over authority.

About the Company

Since 2000, DeWinter has set the standard in connecting finance, accounting, and technology professionals on an executive search, consulting, and contract basis. DeWinter is the first choice for companies looking for the highest standard of care with a firm they trust to understand and meet their needs. Know more