Senior Full-Stack Java Engineer - Hybrid (Austin Area)

KSN Technologies. Inc; Austin (TX); Hybrid; USD 120,000 - 160,000; Full time

Job summary

KSN Technologies. Inc is seeking a Senior Full Stack Java Developer for a 9-month contract in Austin, TX. Local candidates only; hybrid onsite arrangement.

Candidates should have 10+ years of experience in Java enterprise development with Spring, Spring Boot, Oracle, and Hibernate/JPA, plus strong front-end skills (Angular/React/HTML5/CSS/JS/TypeScript). The role emphasizes API design, microservices, and DevOps practices (CI/CD, Docker, Kubernetes).

Qualifications

• 10+ years of professional software development with Java and enterprise systems.
• 3+ years in microservices, Docker and container orchestration.
• Designing multi-tier, distributed, highly available apps.
• REST APIs, CI/CD, secure design expertise.
• IAM with OAuth 2.0, SAML, OpenID Connect, JWT.
• Full stack capability across front-end and back-end.
• Java, Spring, Spring Boot, Oracle, Hibernate/JPA proficiency.
• Front-end skills: Angular/React/HTML5/CSS/JS/TypeScript.
• Relational and NoSQL databases experience.
• Agile/Scrum; strong DevOps with Git/Jenkins/Docker/Kubernetes/Maven.
• JUnit, Selenium; Playwright desirable; AI code tools knowledge.

Responsibilities

• Design, develop, and maintain full-stack apps with Java Spring Boot and modern JS.
• Lead scalable, secure, high-performance solutions using Java tech.
• Collaborate with product owners, architects, and teams to deliver end-to-end.
• Design, develop and consume RESTful APIs and integrate with third-party services.
• Build responsive UI components with modern frameworks across devices.
• Contribute to DevOps: CI/CD, Docker/Kubernetes, automated testing.
• Participate in Agile ceremonies and Jira-managed stories.
• Analyze, design, document, implement and test software per user stories.
• Time tracking for billing and reporting purposes.
• Mentor team members and share knowledge.

Skills

Java

Spring

Spring Boot

Oracle

Hibernate/JPA

Angular

React

HTML5

CSS3

JavaScript

TypeScript

REST APIs

CI/CD

Docker

Kubernetes/OpenShift

JWT/OAuth/SAML

Maven

Git/Jenkins

JVM tuning

Multithreading/Concurrency

Agile/Scrum

RESTful integration

Tools

Docker

OpenShift

Kubernetes

Maven

Git

Job description

KSN Technologies. Inc is seeking a Senior Full Stack Java Developer for a 9-month contract in Austin, TX. Local candidates only; hybrid onsite arrangement.

Candidates should have 10+ years of experience in Java enterprise development with Spring, Spring Boot, Oracle, and Hibernate/JPA, plus strong front-end skills (Angular/React/HTML5/CSS/JS/TypeScript). The role emphasizes API design, microservices, and DevOps practices (CI/CD, Docker, Kubernetes).