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.