> Markdown version of [/jobs/ext/3665555-fullstack-developer-java-21-flutter-react](https://www.wearedevelopers.com/jobs/ext/3665555-fullstack-developer-java-21-flutter-react). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Fullstack Developer (Java 21/Flutter/React) - **Company:** Insight Global - **Location:** Smyrna, GA, United States (Remote available) - **Experience:** Expert - **Salary:** $108,160.0 - $114,400.0 - **Contract:** Permanent contract - **Skills:** Flutter, Java (Programming Language), Artificial Intelligence, Data Structures, Robotic Automation Software, Software Engineering, ReactJS, Backend, Front End Software Development, Claude - **Published:** October 10, 2026 - **Apply:** https://dejobs.org/x/x/C19C7DD5F5FC41A2B5E20F8CB82A3B0F/job/ ## About the Role * 7+ years of Java development experience and recent use of version 21 * 5+ years of front end development experience using Flutter and React * Experience with spec driven development and current use of AI technologies such as Claude for development within their professional role * Experience with data structures and algorithms * Lead or Staff level experience and the ability to take initiative, lead projects forward, delegate and assign work to developers as needed * Supply chain, distribution center industry experience * Experience with WMS, WCS, WES and other distribution and fulfillment center technologies * Goods to person robotics solution experience ## Description Insight Global is looking for a full stack developer with senior/lead level experience with Java (version 21), Flutter and React. This role will be 70% backend Java development and 30% front end using Flutter and React. This role will be supporting the software development team for a large retail company's distribution and fulfillment centers. This team is responsible for adding automation capacities into the fulfillment process through Goods to Person (G2P) robotics automation. They recently had a very successful piolet of Goods to Person within a single distribution and fulfillment center, and will now be rolling out this capability to the remaining facilities nation-wide. Day to day: * 70% backend development using Java 21 * 30% front end Flutter and React * Working as a Lead developer and driving software development forward as well as delegating work out to other developers supporting the project * Leveraging Claude for entire SDLC lifecycle * Using spec-driven development