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# Lead Software Engineer

- **Company:** The Battery
- **Location:** Boston, MA, United States
- **Experience:** Expert
- **Salary:** $225,000 - $260,000
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Cursor, Distributed Systems, Microsoft Copilot, ReactJS, Claude Code, Backend, Front End Software Development
- **Published:** November 7, 2026
- **Apply:** https://www.juju.com/job/28_25197_71ac0e1a5083d72b4a119c925b1c584d-2325709110

## About the Role

If you don't meet all of these, we still encourage you to apply. We believe code is code, and learning new tools is part of joining a new team.

 * 8+ years as a full-stack engineer, with a track record of owning both production frontend (React or similar) and backend systems. You're as fluent in the UI layer as in APIs and data.
 * Experience leading technical direction for a team or product area, not just executing tickets
 * Fluency with AI-assisted development tools (Copilot, Cursor, Claude Code, etc.) and excited about building AI-powered capabilities into the product
 * A strong hands-on collaborator with a bias to action. You lead from the front and help the team deliver on their estimates
 * Deep experience with distributed systems and modern cloud architecture, and the judgment to choose the right tool for the job across the stack
 * A track record of mentoring engineers and elevating team-wide technical practices

## Description

* Own the architecture and roadmap for a core product area end-to-end - from data model to UI - partnering with design and product to ship experiences customers love
 * Lead the design of systems that surface insight from data at massive scale. Think real-time search across billions of log entries or automatic detection of common user paths across millions of events
 * Drive adoption of AI/ML in the product, from bug-detection pipelines to full-stack AI-powered recommendations
 * Set technical direction for scaling our infrastructure cost-effectively while maintaining reliability under heavy load
 * Raise the bar for the team: mentor engineers, review architecture decisions, and model strong full-stack craftsmanship