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Mill is a waste prevention technology company reimagining what it means to eliminate waste, starting with food. We build smart systems and infrastructure for homes, businesses, and municipalities that transform food scraps from landfill-bound waste into valuable resources, including chicken feed. Tens of thousands of Mill’s residential food recyclers are already helping households divert millions of pounds of food scraps every year, paving the way for our upcoming launch of Mill Commercial—the industry’s first end-to-end solution for managing, understanding, and preventing food waste in commercial environments (e.g. grocery, restaurants, food services). At Mill, we are passionate about building easy-to-use, beautifully designed technologies that keep food in the food system and out of landfills. Job Summary We are seeking a highly skilled Senior Full Stack Tech Lead to join our engineering team. This is an individual contributor technical leadership role reporting to the Director of Software Engineering. You will drive the technical direction of your project area, write high-quality code across the stack, and act as the primary technical partner to product management, while mentoring engineers around you. We've moved away from a frontend/backend split at Mill: every engineer here works full stack, typically leaning toward one side based on strength and interest, and teams are organized around projects rather than layers of the stack. You'll likely anchor on a given project for a sustained stretch — enough to build real depth and avoid constant context-switching — with real opportunities to rotate onto new projects and parts of the codebase over time. AI-assisted development is core to how we build software, not a peripheral tool. We expect fluency with tools like Claude Code as part of your daily workflow, and as a senior level engineer, a role in raising the bar for how the team uses them. Key Responsibilities Technical Leadership Lead the technical design and execution of full-stack web applications, ensuring alignment with business objectives and technical standards Architect and implement scalable, secure, and efficient full-stack solutions Evaluate and select technologies, frameworks, and tools — including AI-assisted development tooling — to improve team productivity and code quality Own estimates and technical delivery plans for your project area, and surface risks early Development and Implementation Craft elegant, documented, and sustainable code spanning our full web stack, remaining ready to provide support for our native mobile environment when required Develop and optimize APIs, databases, and user interfaces Use AI-assisted development tools fluently as a standard part of how you write, review, and ship code Team Collaboration & Product Partnership Mentor engineers, fostering a culture of continuous learning and improvement Conduct code reviews and provide constructive feedback to maintain high coding standards Act as the primary technical partner to product managers on your project — informing scope, sequencing, and tradeoffs — even though roadmap ownership sits with the PM Quality Assurance Champion best practices in testing, CI/CD, and deployment Troubleshoot and resolve technical issues, ensuring minimal downtime and disruption Monitor and optimize application performance Required Qualifications 6+ years of professional experience in software development with a focus on full-stack development Deep experience with modern frontend frameworks (e.g. React, Vue, Angular, or SvelteKit) — we use SvelteKit at Mill but recognize that strong React/Vue/Angular experience is highly transferable, especially with AI-assisted tooling, so prior SvelteKit experience is preferred but not required Strong backend experience with TypeScript/Node.js; comfort with serverless architectures