System Integration Engineer - Rail

Role overview

Responsibilities

• Build and maintain secure, reliable third-party integrations through REST APIs, asynchronous messaging, secure data exchange, and device interfaces.
• Modernize legacy interfaces into Java microservices and build for edge, data-center, and AWS deployments.
• Engineer for resilience, observability, auditability, latency, and intermittent or low-bandwidth networks.
• Integrate identity and verification services, traveler-data platforms, biometric and document-capture peripherals, and access-control and gate systems.
• Define interface contracts, schemas, versioning, retries, idempotency, certification, and testing approaches.
• Troubleshoot across application, data, messaging, and network layers; collaborate with software, cloud, network, QA, field engineering, analytics, and security teams.

Required qualifications

• Bachelor's degree in Computer Science or related technical field, or equivalent experience.
• At least 12 years of software engineering or systems integration experience.
• Strong hands-on experience building Java-based distributed services and production API integrations and event-driven messaging.
• Experience with one or more of RabbitMQ, Kafka, JMS, AMQP or similar; MongoDB, Elasticsearch/OpenSearch or comparable data platforms; or AWS production deployment and operations.
• Experience supporting integrations in high-availability, mission-critical, or regulated environments.
• Understanding of authentication and authorization, certificate-based security, schema evolution, error handling and retries, observability, and supportability.
• Experience modernizing legacy or monolithic integrations into service-oriented or microservices architectures.
• Collaborative engineering approach and ownership of delivery outcomes.

Preferred qualifications

• HashiCorp tooling, especially Consul, Nomad, and Vault, or transferable adjacent-platform experience.
• AWS-native services and infrastructure automation; ELK, Grafana, Kibana, Logstash, or other observability stacks.
• Integration of biometric devices, document readers, cameras, license plate readers, or other field peripherals.
• Experience in degraded, disconnected, or low-bandwidth environments.

Additional information