Senior Software Engineer, Fullstack – Builder Studio

🔥 2 hours ago

🇨🇦 Canada – Remote

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 13%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Apollo.io

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2015

🤝 B2B

☁️ SaaS

🤖 Artificial Intelligence

B2B • SaaS • Artificial Intelligence

Apollo. io is an all-in-one sales platform designed to streamline and enhance sales operations from lead generation to deal management. The platform offers tools for contact and account search, scores and signals analysis, inbound optimization, sales engagement, and more, leveraging AI and a living data network for comprehensive sales intelligence. Apollo. io is ideal for sales professionals, marketers, and revenue operations teams aiming to enhance productivity and efficiency by automating workflow tasks and integrating CRM systems. With a focus on improving sales performance through analytics and conversation intelligence, Apollo. io helps businesses find the right leads at the right time, nurture those leads effectively, and close deals efficiently.

📋 Description

• Build the core Builder Studio experience, including the chat-driven build loop, live preview, canvas, and publish/share flow • Shape how the agent converts natural-language goals into plans, pages, databases, and workflows, and safely applies follow-up edits • Design the runtime and workflow layer for generated apps, including triggers, scheduled jobs, retries, logging, and deterministic versus agentic steps • Own delegated identity, permissions, secrets, and isolation for generated apps • Expand integrations across Apollo data and external systems such as Google Sheets, Google Drive, CRMs, and MCP-based connectors • Make relationships between pages, data, workflows, and agents understandable in the UI • Work directly with design partners and customers and turn feedback into shipped improvements • Set engineering patterns, write tests and evals, and own reliability, performance, and cost • Use AI-assisted development for design, investigation, and implementation

🎯 Requirements

• 5+ years building and shipping production software • Real depth on both the frontend and backend of the same product • Strong TypeScript and React skills • Experience with complex, stateful UIs such as editors, canvases, builders, or real-time collaborative surfaces • Solid backend and API design experience • Experience with event-driven or workflow systems where retries, idempotency, and observability matter • Hands-on experience building with LLMs in production, including agent loops, tool calling, context management, code generation, or evals • Understanding of model failure modes and how to design around them • Experience making security decisions for systems that run untrusted or generated code, including sandboxing, delegated auth, scoped tokens, and secrets handling • Track record of taking an ambiguous 0 to 1 product from rough prototype to something customers rely on • Product instinct and empathy for non-technical users • Genuine, current fluency with AI-assisted development • High bar for quality and ownership • Experience with low-code, no-code, AI app-builder products, developer tools, Cloudflare Workers, Durable Objects, Ruby on Rails at scale, or GTM/sales/marketing technology is nice to have

🏖️ Benefits

• Equity • Company bonus • Paid holidays • Flex PTO • Parental leave • Employee assistance program • Wellbeing benefits • Global travel coverage • Life and disability insurance • Extended health, dental, and vision benefits • AI tooling and budget • Resources, support, and autonomy for professional growth