Senior Software Engineer, AI Builder Studio

Apolloio; United States; Remote; USD 150,000 - 210,000; Full time

Job summary

Apollo is seeking an experienced software engineer to own major slices of Builder Studio end to end, from the chat-driven build loop to live preview and the publish/share flow. You will work on problems like an agent that writes software and a runtime that safely executes code with user permissions.

Join a small, high-bar team, shape the product for non-technical users, and own reliability, performance, and cost while partnering with design partners and customers to ship quickly.

Qualifications

• 5+ years building and shipping production software, with real depth on both the frontend and backend of the same product.
• Strong TypeScript and React skills, including complex, stateful UIs such as editors, canvases, builders, or real-time collaborative surfaces.
• Solid backend and API design experience, ideally including event-driven or workflow systems where retries, idempotency, and observability matter.
• Hands‑on experience building with LLMs in production: agent loops, tool calling, context management, code generation, or evals. You know where models break and how to design around it.
• Comfort making sound security calls on systems that run untrusted or generated code: sandboxing, delegated auth, scoped tokens, and secrets handling.
• A track record of taking an ambiguous 0 to 1 product from rough prototype to something customers rely on, and making the scope-versus-quality calls that requires.
• Product instinct and empathy for non-technical users. You care whether a RevOps lead can understand what their app is doing, not just whether the code is correct.
• Genuine, current fluency with AI-assisted development and a high bar for quality and ownership
• Experience building low‑code, no‑code, or AI app-builder products, or developer tools
• Experience with edge or serverless runtimes such as Cloudflare Workers and Durable Objects
• Experience with Ruby on Rails at scale
• Background in GTM, sales, or marketing tech, or experience working closely with RevOps teams

Responsibilities

• Build the core Studio experience: the chat-driven build loop, live preview, canvas, and the publish and share flow, so a non-technical user can go from an idea to a working tool in minutes
• Shape how the agent turns a natural-language goal into a plan, a set of pages, databases, and workflows, and then safely applies follow-up edits without breaking what already works
• Design the runtime and workflow layer for generated apps, including triggers, scheduled jobs, retries, logging, and the line between deterministic steps and agentic steps
• Own delegated identity, permissions, secrets, and isolation so generated apps act with exactly the access the user has, and nothing more
• Expand "connect once, use anywhere" integrations across Apollo data (contacts, companies, lists) and external systems like Google Sheets, Google Drive, CRMs, and MCP-based connectors
• Make the relationships between pages, data, workflows, and agents legible in the UI, so customers trust what their app is doing
• Work directly with design partners and customers, turn their feedback into shipped improvements quickly, and help define what the product becomes
• Raise the quality bar on a fast-moving 0 to 1 team: set patterns, write the tests and evals that matter, and own reliability, performance, and cost of what you ship

Skills

TypeScript

React

Backend API design

LLMs in production

Security sandboxing

0 to 1 product

Product empathy

AI-assisted development

Tools

Ruby on Rails

Cloudflare Workers

Job description

Apollo is seeking an experienced software engineer to own major slices of Builder Studio end to end, from the chat-driven build loop to live preview and the publish/share flow. You will work on problems like an agent that writes software and a runtime that safely executes code with user permissions.

Join a small, high-bar team, shape the product for non-technical users, and own reliability, performance, and cost while partnering with design partners and customers to ship quickly.