Full Stack React/Java Engineer Role in St. Petersburg, FL

Duties:

• Build features end to end across the Nash platform — from the React/TypeScript front end through the Java/Spring Boot services to the Oracle schema behind them.
• Extend the asynchronous LLM execution pipeline. Work on the message-driven services that accept requests, queue them by priority, call the model provider, and return results — including retry, failover and error handling semantics.
• Integrate and maintain model provider connections across Azure OpenAI and AWS Bedrock: new model onboarding, routing, provider SDK upgrades, and the differences in how each provider reports usage and errors.
• Design and implement throughput controls — token- and request-per-minute rate limiting, backpressure, and circuit breaking — so the platform scales toward its 1M+ requests/day target without exhausting provider quota.
• Own usage, cost and token accounting. Extend the data model and reporting that tracks input, output and reasoning tokens per request, and surface it in the admin UI.
• Deliver the self-service authoring experience that lets business teams create and tune AI use cases without hands-on engineering support.
• Work the full change lifecycle in a regulated environment — design, code review, governance and compliance gates, and controlled promotion across environments.
• Build and maintain observability — structured logging, service metrics, and dashboards in Splunk, Datadog and Dynatrace; diagnose production issues across a distributed, queue-based system.
• Harden the platform — service authentication and authorisation, secrets handling, and dependency currency.

Collaborate with DBAs, platform, networking and compliance teams, whose sign-off the work depends on.

Skills:Required

• 5+ years building and running production web applications end to end

• React 18 + TypeScript — hooks, modern state management (Redux Toolkit / RTK Query), and experience with a high-volume data grid (ag-grid or equivalent)

• Java 17 + Spring Boot — REST APIs, Spring Data JPA, dependency injection, configuration management

• Strong relational database and SQL skills — schema design, query tuning, and working with DBA-applied migrations rather than ORM-generated DDL

• Solid grasp of asynchronous and concurrent programming — thread pools, executors, and the failure modes that come with them

• Git-based workflow with peer review; CI/CD pipelines

• Able to work within formal change control, and to write for an audience that includes non-engineers

Strongly preferred

• (`Mono`, `Flux`, WebFlux) — core to the execution services