Backend Software Engineer II – API Services / Money Movement

Title

Backend Software Engineer II – API Services / Money Movement

Location

Buffalo, NY - Hybrid, Monday–Thursday onsite; Friday remote

Candidates willing to relocate are acceptable

The Money Movement team within Enterprise API Services is seeking an experienced Java Software Engineer with strong REST API development experience. This individual will develop, maintain, enhance, and troubleshoot enterprise APIs supporting money movement across the bank.

The team consists of approximately 12 people and supports integrations with mainframe systems, ACH processing, credit cards, loans, and deposit accounts.

The environment is currently on-premises, with a migration to Microsoft Azure underway.

Day-to-day responsibilities

• Develop and maintain enterprise-level REST APIs using Java and Spring Boot.
• Enhance existing applications and implement new functionality.
• Troubleshoot defects and resolve issues within an established codebase.
• Use SQL queries to investigate transactions, validate data, and troubleshoot failures.
• Perform API testing using Postman, including manual and automated requests.
• Support integration testing and code deployments across environments.
• Collaborate with developers and downstream teams supporting loans, credit cards, deposit accounts, ACH, and mainframe integrations.
• Participate in production releases and occasional after-hours support.
• Contribute to the ongoing Azure cloud migration.

Technical requirements

Skill

Importance

Expectations

Java

Critical

Intermediate to expert; strong hands-on coding

REST API development

Critical

Experience designing, building, maintaining, and consuming APIs

Spring Boot

Critical

Hands-on experience developing Java-based services

SQL

Required

Intermediate proficiency in querying and troubleshooting

Postman

Required

Experience testing REST APIs

Enterprise integrations / SOA

Required

Understanding of service-oriented architecture and complex integrations

Agile / Scrum / Jira

Expected

Experience working within Scrum teams

Azure cloud

Preferred

Valuable due to the current migration

Banking / financial services

Preferred

Helpful for understanding transaction workflows and money movement

SQL clarification

Microsoft SQL Server is used, but Oracle or comparable relational database experience is acceptable. The manager does not need a database expert. SQL will primarily be used for troubleshooting transactions and testing, with occasional schema changes such as adding tables or columns.

Ideal candidate profile

Looking for a strong, experienced Java backend developer who can contribute quickly with minimal ramp-up time.

The ideal candidate will have substantial experience building APIs, not simply consuming them. They should be comfortable navigating existing enterprise applications, debugging complex integrations, and working collaboratively across development teams.

Banking experience is beneficial but not mandatory. Candidates from other industries with strong enterprise integration experience should be considered.