> Markdown version of [/jobs/ext/3833838-staff-software-engineer-in-mundelein](https://www.wearedevelopers.com/jobs/ext/3833838-staff-software-engineer-in-mundelein). 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). --- # Staff Software Engineer in Mundelein - **Company:** Energy Jobline - **Location:** Mundelein, IL, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Amazon Web Services, Node.Js, TypeScript, ReactJS, Claude Code, Backend, Agentic-AI, NestJS - **Published:** October 19, 2026 - **Apply:** https://www.energyjobline.com/job/staff-software-engineer-mundelein-31997065 ## About the Role Staff level SW Engineer ( Backend Heavy or Backend) with 8+ years experience The ideal candidate will bring deep TypeScript experience. Node.js/NestJS and React are a +. AWS production experience, and a track record of designing systems around asynchronous workflows, external integrations, and data consistency. The company is AI-, with engineers using AI agents such as Claude Code as a core part of the development process, and you'll work closely with product, operations, and customers from concept through production. The role offers Competitive Base salary plus meaningful equity, comprehensive benefits, 401(k), and PTO, with a hybrid schedule of three days per week in the NYC office.