Senior Java Full-Stack Engineer (Hybrid, 6-Month Contract)

Intone Networks Inc.; Bellevue, Northern (WA, KY); Hybrid; USD 140,000 - 180,000; Full time

Job summary

Intone Networks Inc. is seeking a Java Full Stack Developer for a 6-month contract in Bellevue, WA. The role combines frontend work with React and TypeScript with backend services in Java/Spring Boot and Python.

You will build REST APIs, implement microservices, and work with Docker/Kubernetes, Kafka, and CI/CD pipelines in a hybrid environment. Strong emphasis on test automation, observability, and AI tooling is required.

Qualifications

• 12+ years of software development experience
• Strong experience with JavaScript/TypeScript and React for building production user interfaces
• Proficiency with messaging and event-driven systems such as Kafka
• Experience with frontend build tooling, package management, and component-based design
• Experience with end-to-end and UI test automation using Playwright or equivalent
• Proficiency with front-end technologies, including HTML, CSS, JavaScript, and Webpack
• Strong experience with Python, Java, and Spring Boot
• Experience building scalable REST APIs and microservices
• Experience working with JSON and XML, including schema validation
• Experience with Git, GitLab, and CI/CD automation
• Hands-on experience with Unix OS and shell scripting
• Experience developing test automation using tools such as JUnit or Karate
• Proficiency with API testing tools such as Postman
• Experience working with relational databases and writing complex SQL
• Experience with containerization and orchestration tools such as Docker and Kubernetes
• Strong experience using observability and telemetry tools such as Splunk, AppDynamics, or Grafana
• Hands-on experience with AI productivity tools and foundation models, prompt engineering, retrieval-augmented generation (RAG), and AI agent development
• Experience with product-based companies or FAANG organizations

Responsibilities

• Develop and maintain production user interfaces using JavaScript, TypeScript, and React
• Build scalable REST APIs and microservices using Java and Spring Boot
• Design and implement backend solutions with Python OOP
• Work with messaging and event-driven systems such as Kafka
• Develop and execute end-to-end and UI test automation using Playwright and equivalent tools
• Create test automation using JUnit, Karate, and API testing tools such as Postman
• Manage frontend build tooling, package management, and component-based design
• Implement containerization and orchestration using Docker and Kubernetes
• Work with relational databases and write complex SQL queries
• Leverage observability and telemetry tools such as Splunk, AppDynamics, or Grafana
• Collaborate with version control systems including Git and GitLab, and CI/CD pipelines
• Utilize AI productivity tools and work with foundation models, prompt engineering, RAG, and AI agent development

Skills

JavaScript/TypeScript

React

Kafka

Playwright

JUnit/Karate

Python

Java

Spring Boot

REST APIs

SQL

Docker

Kubernetes

Git/GitLab

CI/CD

HTML/CSS/Webpack

AI productivity tools

Tools

Postman

Webpack

Grafana

Splunk

AppDynamics

Snowflake

Azure/AWS/GCP

Job description

Intone Networks Inc. is seeking a Java Full Stack Developer for a 6-month contract in Bellevue, WA. The role combines frontend work with React and TypeScript with backend services in Java/Spring Boot and Python.

You will build REST APIs, implement microservices, and work with Docker/Kubernetes, Kafka, and CI/CD pipelines in a hybrid environment. Strong emphasis on test automation, observability, and AI tooling is required.