Principal Software Engineer- AI Context

HubSpot is an AI-powered customer platform that focuses on enhancing customer experiences through innovative software solutions. They are seeking a Principal Software Engineer to lead the technical direction of their AI Context group, responsible for building a robust platform that processes large volumes of data and delivers impactful AI features.

Responsibilities:

• Helps influence/drive technical direction across the entire AI context group
• You’ll work across ingestion, processing, storage, sync, reliability, and intelligence surfaces
• Our group is made of world class experts in machine learning and AI and we help power AI experiences across HubSpot
• You ship software—not just prototypes
• We expect deep technical engagement in the systems you influence, including ownership of large, high-impact initiatives
• You’ve operated and evolved large-scale, fault-tolerant, cost-efficient systems
• You’re comfortable scaling across billions of events per day and guiding design around availability, throughput, and latency
• You define and drive reusable platform patterns across ingestion, processing, quality, sync, and observability
• You align platform architecture with HubSpot’s CRM, AI/ML, and extensibility goals, ensuring infrastructure enables product evolution—not constrains it
• You’re recognized as a mentor and multiplier
• Others seek your input for design reviews, incident postmortems, and architectural bets
• You partner with product and engineering leadership to define strategy, scope opportunities, and execute for product-line-wide outcomes
• You move into unfamiliar areas quickly and meaningfully contribute—whether it’s a new tech stack, domain model, or organizational challenge
• You elevate HubSpot’s brand, help attract and retain senior talent, and share your knowledge across the company

Requirements:

• Proven track record of delivering projects with significant product-line or company-level impact, often in ambiguous or complex technical environments
• Ability to move across domains with ease, challenge existing assumptions, and redefine what's possible through deep architectural thinking and strong execution
• Hands-on, high-leverage contributor who ships software—not just prototypes
• Deep technical engagement in the systems influenced, including ownership of large, high-impact initiatives
• Expertise in operating and evolving large-scale, fault-tolerant, cost-efficient systems
• Comfortable scaling across billions of events per day and guiding design around availability, throughput, and latency
• Ability to define and drive reusable platform patterns across ingestion, processing, quality, sync, and observability
• Align platform architecture with HubSpot's CRM, AI/ML, and extensibility goals, ensuring infrastructure enables product evolution
• Recognized as a mentor and multiplier, with others seeking input for design reviews, incident postmortems, and architectural bets
• Ability to partner with product and engineering leadership to define strategy, scope opportunities, and execute for product-line-wide outcomes
• Ability to move into unfamiliar areas quickly and meaningfully contribute—whether it's a new tech stack, domain model, or organizational challenge
• Elevate HubSpot's brand, help attract and retain senior talent, and share knowledge across the company