Senior Backend API Developer | Hybrid Buffalo | Azure Move

Lighthouse Technology Services, Inc; Buffalo (NY); Hybrid; USD 96,000 - 106,000; Part time

Job summary

Lighthouse Technology Services, Inc. is seeking a Senior Backend API Developer for a 12-18 month contract in Buffalo, NY.

The role is hybrid with 4 days on-site, and involves developing enterprise APIs for money movement, integrating with mainframes and external banks via ACH, and leading migration of on-prem services to Azure. Qualified candidates will have 5+ years in backend development, strong Java/Spring Boot experience, SQL Server proficiency, and hands-on API testing with Postman.

Qualifications

• 5+ years as a Senior Backend Developer with REST API design and implementation experience.
• Proficient Java development with Spring Boot and API design.
• Experience querying and troubleshooting SQL Server databases.
• Experience testing REST APIs with Postman for integration scenarios.
• Able to contribute to Azure cloud migration projects; banking/financial services background is a plus.

Responsibilities

• Develop and maintain enterprise APIs enabling money movement across banking systems.
• Build and support API integrations with mainframes and external banks via ACH protocols.
• Lead migration efforts moving on-premise services to Azure.
• Support production systems through troubleshooting, defect resolution, and performance optimization.
• Implement incremental functionality and enhancements to backend API codebase.
• Conduct integration testing and REST API testing using Postman.
• Query and troubleshoot SQL Server transaction data for money movement flows.
• Collaborate with Money Movement and downstream service teams; participate in code reviews.

Skills

REST API design

Java

Spring Boot

SQL Server

API testing

Tools

Postman

Azure

Job description

Lighthouse Technology Services, Inc. is seeking a Senior Backend API Developer for a 12-18 month contract in Buffalo, NY.

The role is hybrid with 4 days on-site, and involves developing enterprise APIs for money movement, integrating with mainframes and external banks via ACH, and leading migration of on-prem services to Azure. Qualified candidates will have 5+ years in backend development, strong Java/Spring Boot experience, SQL Server proficiency, and hands-on API testing with Postman.