Java Integration and Data Acquisition Engineer 2

Job Summary

Java Integration and Data Acquisition Engineer Suggested internal level: F / Specialist, Technology Engineering About the role Nationwides Cyber Security Operations Center is hiring a hands-on Java engineer to own and extend our existing fleet of integration services that acquire, normalize, and deliver data from complex enterprise and third-party systems. Day one, youll begin taking over existing projects that execute telemetry and retention pulls from a range of APIs - solving the hard problems that appear beyond a simple REST call: evolving contracts, pagination, throttling, async workflows, GraphQL, Microsoft Graph, gRPC, tricky encodings, and binary data. Over time, the role grows to include Angular backend development - the database access, service orchestration, and secure LLM-powered APIs that support Angular front ends. This is a backend and integration engineering role for someone who pairs strong modern Java skills with the instincts of a protocol and data-format troubleshooter.

Responsibilities

• Own, operate, maintain, and extend a fleet of Java/Spring Boot integration projects running telemetry and retention pulls, in a modern CI/CD, Kubernetes, and observability environment.
• Integrate with complex REST, Microsoft Graph, GraphQL, and gRPC APIs, handling auth, pagination, throttling, async workflows, and partial failures.
• Parse and normalize messy JSON, XML, encoded, compressed, and binary payloads - reliably and at scale.
• Build resilient, observable integrations and secure LLM-powered features with proper guardrails.
• Grow into Angular backend-for-frontend development - database access, service orchestration, and secure LLM-powered APIs.

Must-have qualifications

• Advanced Java and strong production experience with Spring Boot and its ecosystem.
• Strong database integration skills - SQL/NoSQL, transactions, schema design, query tuning, and ORM (Spring Data, JPA/Hibernate, JDBC).
• Building and operating containerized Java services through Git-based CI/CD in Kubernetes or comparable orchestration.
• API integration well beyond basic CRUD - auth, pagination, rate limits, retries, and unreliable upstream behavior - including hands-on Microsoft Graph or similarly complex enterprise APIs.
• Working experience consuming or implementing GraphQL, plus gRPC and Protocol BuAers.
• Deep JSON and XML parsing (Jackson, StAX/SAX/JAXB) with secure parser configurations, and byte-level diagnosis of text-encoding and binary-format issues.
• Resilience engineering - timeouts, retries, backoA, circuit breakers, idempotency, and checkpointing - with strong automated testing (JUnit, contract, and adversarial fixtures).
• Experience integrating applications with LLM APIs or SDKs (structured output, streaming, context limits, provider failures).
• Secure development practices and clear communication of protocol and data quality issues to technical and non-technical stakeholders.
• Nice to have Java 25+ and Spring Boot 4.0+; Microsoft Graph delta sync and subscriptions; Angular BFF patterns with SSE or WebSockets.
• AWS, Kubernetes, Helm, Vault, GitHub Actions, Harness, Splunk, New Relic, Apigee, and Kafka.
• Enterprise LLM platforms, RAG, embeddings, vector search, or agent workflows.
• Working Python or scripting for prototyping of data inspection and rapid API investigation.
• Experience designing backend APIs for Angular or comparable single-page applications (a growth area for this role).

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