Sr Java Full Stack Developer

Cayuse Holdings•Austin, TX

20h•Onsite

About The Position

We are looking for a Senior Java Full Stack Developer with strong experience in designing, developing, deploying, and troubleshooting enterprise applications. The ideal candidate should have hands-on expertise in Java, Spring Boot, React, AWS, databases, CI/CD, microservices, and system/solution design. The candidate should be comfortable working at both the application development and architecture/design levels, with strong problem-solving and debugging skills in production environments.

Requirements

Create a simple architecture diagram for one of their productionized projects.
Explain the major components and how they interact.
Explain why specific technologies/components were selected.
Describe frontend-to-backend communication, databases, APIs, messaging, deployment, and infrastructure.
Discuss basic scalability, availability, security, and performance considerations.
Demonstrate strong troubleshooting skills through real-world scenarios such as EKS/ECS deployment failure, application not starting after deployment, production performance degradation, high CPU/memory utilization, API latency or timeout issues, database connectivity/performance problems, and service-to-service communication failures.
Strong understanding of commonly used Java and Microservices design patterns, including problem statement, internal working, advantages, limitations, when/when not to use, and real-world implementation examples.
Understand and clarify requirements.
Identify major system components.
Propose a high-level solution architecture.
Select appropriate technologies.
Explain data flow and component interactions.
Consider scalability, reliability, security, performance, and maintainability.
Strong hands-on knowledge of Core Java and recent Java versions.
Object-oriented programming.
Collections, Streams, Lambda expressions, and exception handling.
Multithreading/concurrency.
Java 8+ features.
Spring Boot.
REST APIs.
Dependency Injection.
Spring Security and configuration.
Microservices development.
Unit/integration testing.
Writing clean, maintainable, production-quality code.
Java – Recent Versions 8/10: 8+ Years
Spring Boot: 5+ Years
React / Front-End Technologies: 2+ Years
JavaScript: 2+ Years
AWS – S3, Lambda, EKS, ECS, EC2: 2+ Years
Infrastructure as Code – Terraform, Ansible, CloudFormation: 1+ Years
CI/CD – Jenkins, GitHub Actions: 2+ Years
RDBMS – MySQL, Oracle: 8+ Years
NoSQL – MongoDB, Cassandra: 1+ Years
System-Level Design / Frontend-to-Backend Architecture: 3+ Years
Application Design: 3+ Years
Architecture Understanding: 3+ Years

Responsibilities

Design, develop, and maintain scalable applications using Java and Spring Boot.
Develop responsive front-end applications using React and JavaScript.
Design and implement RESTful APIs and microservices.
Work with AWS services including S3, Lambda, EKS, ECS, and EC2.
Develop and maintain infrastructure using Terraform, Ansible, and CloudFormation.
Implement and manage CI/CD pipelines using Jenkins and GitHub Actions.
Work with relational databases such as MySQL and Oracle.
Work with NoSQL databases such as MongoDB and Cassandra.
Participate in application, system, and solution architecture discussions.
Design solutions that are scalable, reliable, secure, and production-ready.
Troubleshoot application, deployment, performance, and production issues.
Collaborate with engineering, DevOps, QA, and product teams.