Top Java Developer Jobs in Austin, TX

Build and maintain backend services and REST APIs using Java (11/17+) and .NET (ASP.NET Core). Implement business logic, data access, and integrations; write well-tested code with JUnit/xUnit/NUnit; contribute to CI/CD and DevOps; participate in design, code reviews, and Agile ceremonies.

Design, build, and improve Elasticsearch distributed-systems components for scalable, concurrent, and consistent indexing. Maintain cluster coordination for performance and resilience, push system scale limits, investigate performance and concurrency issues, support operations/support engineers, and lead projects involving multiple engineers from design through delivery.

The Senior Full Stack Java Developer will design and maintain enterprise applications using Java and modern front-end technologies while collaborating in Agile teams and mentoring junior developers.

Develop and maintain full-stack web and enterprise applications using Java and JavaScript stacks (Spring, Hibernate, Node/MEAN, AngularJS). Build and consume SOAP/REST services, design data models (SQL and NoSQL), implement multithreaded server-side features, apply testing (JUnit, Karma/Jasmine), and work across SDLC/TDD. Participate in performance troubleshooting, cloud (AWS) deployments, and responsive UI development using HTML5/CSS3 and JS frameworks.

The role involves design and development of web applications, coding enhancements, and testing complex modules using Java and related technologies. Excellent communication skills are required, and local candidates are preferred.

Seeking a Java Spring Boot Developer with over 9 years of experience in Java development, API architecture, and cloud solutions. Strong problem-solving skills and ability to work independently required.

The J2EE/Java Developer will modify, test, and develop web applications, create design documentation, and assist in technology updates, providing support during non-standard hours.

KRG Technologies is seeking a Java Developer with at least 8 years of experience in Java/J2EE, networking, and related technologies.

The Sr. Java Developer will design, prototype, and implement software while collaborating with management to improve systems and provide technical support.

The Senior Java Developer will lead the core platform team in developing scalable Java applications using various technologies within 2-week sprints.

Design, build, and maintain efficient, reusable Java backend systems; translate business requirements into applications; optimize performance and stability; review and test code for quality and security; identify and fix bottlenecks and bugs; maintain code quality and system responsiveness.

Lead development of a Medicare appeals/claims platform: prioritize and deliver features, ensure quality and compliance, guide architecture and technology choices, coordinate cross-functional teams, manage incidents, and drive process improvements within an Agile environment.

Design, develop, test, and maintain backend services using Java and Python within a microservices architecture. Collaborate with architects, product owners, and infrastructure to deploy containerized applications, tune performance, implement CI/CD, and support production systems. Participate in code reviews, agile ceremonies, and technical design to deliver scalable, high-quality solutions.

Designs, implements, and runs Java Spring Boot microservices and REST APIs; leads design, CI/CD, TDD, performance tuning, security, and cross-product collaboration. Coaches teams and owns product KPIs and production support.

Design, develop, and maintain scalable Java/Micronaut enterprise frameworks and cloud-native microservices on Azure. Build and deploy services to AKS, create CI/CD pipelines with Azure DevOps, implement batch/asynchronous workflows, integrate messaging systems, optimize databases, and ensure security, observability, and resilience.

As a Senior Developer, you will modernize COBOL systems to Java, enhancing functionality and performance while collaborating with stakeholders and ensuring coding standards are met.

As a Senior Software Engineer, you will build cloud solutions, define migration strategies, mentor junior engineers, and ensure architectural integrity while collaborating with peers.

Design, build, and support full-stack, cloud-native products using Java and modern front-end frameworks. Implement TDD, CI/CD pipelines, microservices, and secure APIs; collaborate with product teams, provide production support, and measure performance against product metrics.

Lead an agile engineering team to design, build, and operate scalable Java-based, cloud-native, event-driven systems. Mentor developers, perform design/code reviews, troubleshoot production issues, and drive AI-assisted development and engineering best practices.

Build and maintain scalable backend services in Python and Java (Spring Boot), develop responsive React frontends, integrate AI/GenAI (LLMs, RAG) using frameworks like LangChain/LlamaIndex, collaborate with cross-functional teams, troubleshoot and optimize systems, and ensure coding, security, and performance best practices.

Develop, maintain, and improve cloud-based stateful IVR applications using Java and Spring. Integrate IVR with internal services, configure application logic via SQL, monitor and troubleshoot contact center systems, implement operational improvements, and collaborate with project teams and stakeholders to deliver reliable, high-quality IVR experiences.

Lead backend architecture and implementation for Java Spring microservices, validate and own AI-assisted code, mentor engineers, collaborate with product to deliver features, and drive technical excellence and scalable, test-covered systems.

Design, build, and deploy cloud-native, API-first mortgage servicing components using Java/Node.js and React. Collaborate with global teams to implement distributed, event-driven systems (Kafka), ensure performance, observability, CI/CD, and adherence to API standards and testing practices.

Develop Java-based EDI solutions using Oracle SOA Suite/Java CAPS. Implement HIPAA-compliant X12 transaction formats and HL7 v2/v3 messaging. Build SOA/EJB web services, test with SoapUI/JUnit, and deploy on WebLogic while collaborating with analysts and developers.

Design, implement, test, and maintain full‑stack features and services for the Cayuse Research Platform. Drive architecture, prototypes, and technical debt reduction while practicing TDD, expanding automated QA, collaborating cross‑functionally, and ensuring high quality delivery in an Agile environment.