Senior Backend Engineer - Java/Spring Boot, GCP

Halo Media; United States; On-site; USD 140,000 - 210,000; Full time

Job summary

Halo Media is hiring a Senior Software Engineer – Backend / Integrations to design, build, and scale backend services and external integrations on Google Cloud Platform using Java 21 and Spring Boot.

You will develop event-driven microservices, work with Cloud Run, Pub/Sub, Cloud Tasks, and Cloud Workflows, and integrate REST, SOAP, SFTP, and webhooks while maintaining secure API access with OAuth 2.0 / OIDC and JWT.

Qualifications

• 8+ years of professional backend software engineering experience.
• Strong hands-on experience with Java 21 and Spring Boot 3.x.
• Experience designing and developing microservices in production environments.
• Strong production experience with Google Cloud Platform (GCP).
• Experience with Cloud Run, Pub/Sub, Cloud Tasks, Cloud Workflows, and Cloud Scheduler.
• Strong understanding of event-driven architecture and messaging patterns.
• Hands-on experience building integrations using REST, SOAP, SFTP, and webhooks.
• Experience implementing API security using OAuth 2.0 / OIDC and JWT.
• Experience with automated testing, including JUnit and integration testing.
• Experience with CI/CD, code reviews, and production deployments.

Responsibilities

• Design and implement Java 21 / Spring Boot microservices running on Cloud Run.
• Build backend services for licensing, case management, payments, documents, and notifications.
• Design PostgreSQL/AlloyDB persistence with data isolation and search capabilities.
• Build asynchronous event-driven flows using Pub/Sub and Eventarc.
• Implement scheduled processing with Cloud Tasks and Cloud Scheduler.
• Develop multi-service orchestrations using Cloud Workflows.
• Build and maintain integrations with external state and federal systems via REST, SOAP, SFTP, and webhooks.
• Implement secure payment processing and settlement/reconciliation workflows.
• Ensure services meet security, encryption, and data isolation requirements.
• Develop comprehensive unit and integration tests.
• Participate in architecture discussions, code reviews, CI/CD, and production deployments.

Skills

Java

Spring Boot

Backend architecture

Event-driven design

REST integration

PostgreSQL

OAuth 2.0 / OIDC

JUnit testing

Tools

Cloud Run

Pub/Sub

Cloud Tasks

Cloud Workflows

Cloud Scheduler

GCP

AlloyDB

BigQuery

Job description

Halo Media is hiring a Senior Software Engineer – Backend / Integrations to design, build, and scale backend services and external integrations on Google Cloud Platform using Java 21 and Spring Boot.

You will develop event-driven microservices, work with Cloud Run, Pub/Sub, Cloud Tasks, and Cloud Workflows, and integrate REST, SOAP, SFTP, and webhooks while maintaining secure API access with OAuth 2.0 / OIDC and JWT.