Senior Software Engineer, Internal Tools

The Team

The Operations team is a key partner in enabling Biohub’s pioneering work to combine frontier AI with frontier biology to solve disease and Learning Commons’ mission to build AI infrastructure that aligns how students learn with the tools that shape their learning experiences. Operations includes our Central Tech, Finance, Marketing & Communications, People, and Real Estate / Workplace / Events / Facilities / Security (REWFS) teams. Together, these teams create the systems, programs, and experiences that empower our partners and colleagues across Biohub and Learning Commons to drive impact.

The Opportunity

This role is about building the internal tools and AI-powered workflows that make CZI's business teams more effective at the work they do. As a Senior Software Engineer for Internal Tools, you'll own the design and delivery of individual systems end-to-end — applications, agents, integrations, and the knowledge infrastructure that turn back-office work into something teams can do faster, better, and with more leverage. You'll partner with the team's tech lead on architecture and bring strong points of view to that partnership. This is a high-autonomy, high-impact senior IC role on a deliberately small team — the leverage comes from depth and design discipline, not headcount.

What You'll Do

• Own the design and delivery of individual systems end-to-end — from scoping with business stakeholders through production deployment
• Build the production applications business teams use day-to-day
• Design and build AI features — custom agents, workflows, and the knowledge and retrieval substrate that lets them reason over connected enterprise data
• Partner with the tech lead on architecture decisions; contribute strong points of view on tradeoffs, patterns, and reuse
• Potentially contribute to the team's cloud footprint over time — pragmatic infrastructure decisions, deployment, observability, and reliability for what the team ships, as the scope of the team develops
• Partner with senior business stakeholders and embedded engineers across the organization

What You'll Bring

• 5+ years building production software systems as a senior IC, with a track record of owning meaningful surfaces end-to-end
• Strong full-stack engineering fundamentals — comfortable shipping production applications, backend services, and the integration layer between them
• Direct production experience building LLM-based applications, custom agents, or agentic workflows
• Strong API integration experience at the enterprise SaaS layer — auth, rate limits, schema drift, failure modes
• Working fluency with MCP, LLM tool/function calling, current agent frameworks, and retrieval/knowledge infrastructure (knowledge graphs, vector stores, RAG)
• Comfort with ambiguity; ability to make progress when requirements are evolving
• Strong stakeholder fluency; you can hold technical conversations with business partners without a translator

Nice to Have

• Background in enterprise IT, business systems, or platform engineering
• Experience operating cloud infrastructure (AWS, Terraform) for production systems