Sr Java Backend Developer at Coderio Sr Java Backend Developer at Coderio in Coral Gables, Florida Posted in 5 days ago.

Type:

full-time At Coderio Software Company we are creating a new squad to work with one of our clients in the banking industry. You'll be working on high-impact backend systems using Java 21, AWS, and event-driven microservices, helping to build scalable, cloud-native solutions in a modern engineering environment.

Role:

Senior Java Developer.

Location:

Miami Lakes Work scheme: Hybrid (office x3 & remote x2) Three-stage recruitment process, with a F2F interview.

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, structured outputs, and the Model Context Protocol) and build agentic workflows, ensuring AI safety and governance (guardrails, PII/PCI handling) in a regulated setting.

Requirements:

Technical Foundation:

Senior level with 6+ years of experience building backend services in Java 21 and at least 2+ years specifically in microservices and event-driven systems.

Stack Expertise:

Deep, hands-on mastery of Java 21 with strong OOP and concurrency fundamentals, alongside production experience in Spring Boot and Spring Cloud.

Cloud Architecture:

Solid, demonstrable production experience with AWS services including DynamoDB, Kinesis, SQS, SNS, KMS, API Gateway, ECS/EKS, Lambda, IAM, and RDS.

AI Proficiency:

Fluency with AI-assisted development (like Claude Code or Copilot) with the critical judgment to review AI-generated code.

Testing Discipline:

Solid testing discipline utilizing JUnit, Mockito, and integration testing.

Location & Engagement:

Must be located in the Miami / Fort Lauderdale area and available to work 100% on-site for a contract engagement. Nice to

Have:

Financial services or payments domain experience, specifically with payment messaging standards such as ISO 20022 and the legacy FAIM (Fedwire) format. Experience with containers and orchestration (Docker, Kubernetes). Hands-on experience with Infrastructure as Code (Terraform, CloudFormation, or CDK). Experience with workflow and orchestration engines such as Temporal, Camunda, or AWS Step Functions.

Advanced AI skills:

vector stores/RAG, prompt engineering, and AI observability. Offer valid for W2 or 1099 contracts. Coderio does not offer sponsorships.