Sr Java Backend (Miami Lakes)

About Us
Coderio designs and delivers scalable digital solutions for global companies. We combine strong technical expertise with a product mindset to lead complex software initiatives end-to-end. We work with international clients, value autonomy and clear communication, and build long-term partnerships through technical excellence.
🌍 More information: http://coderio.com
This is a high-impact technical role. We are looking for a Senior Java Microservices Developer for a contract engagement. You will own the design, development, and delivery of a suite of event-driven microservices running on AWS. Operating strictly  in the Miami / Fort Lauderdale area, you will be a key player in an established engineering team, bringing deep technical expertise in distributed systems and leveraging modern AI tools and agentic workflows to build production-grade services.
This is a hands-on execution role. You are responsible for the technical health of the codebase, the performance of the architecture, and delivering high-quality software that scales.
What To Expect In This Role (Responsibilities)
Backend Architecture & Execution: Design, build, test, and deploy Spring Boot microservices following strict team standards. You will own your code from design to production.
Distributed Systems & Event-Driven Flows: Implement publish/subscribe async messaging and handle distributed transactions using saga or orchestration patterns.
API Design & Integration: Design and consume REST APIs, webhooks, and subscription APIs, while actively contributing to API contracts and versioning.
Cloud-Native Engineering: Build and maintain CI/CD pipelines and infrastructure-as-code for your services, operating heavily on AWS.
Operational Excellence: Diagnose and resolve issues across distributed services utilizing observability tools like New Relic, Datadog, or OpenTelemetry for logging, tracing, and metrics.
Advanced AI & Agentic Workflows: Integrate LLMs into services (function/tool calling, struct...