Principal Software Engineer- Data Platform

HubSpot is an AI-powered customer platform that connects marketing, sales, and service. They are seeking a Principal Software Engineer to shape the future of their Data Platform, influencing technical direction and driving high-impact initiatives across various domains.

Responsibilities:

• Helps influence/drive technical direction across the entire Data Platform product line, not just one group or team
• You’ll work across ingestion, processing, storage, sync, reliability, and intelligence surfaces
• 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 make meaningful contributions- 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 and challenge existing assumptions
• Deep architectural thinking and strong execution skills
• Experience in platform-scale ownership and influencing technical direction across a product line
• Hands-on experience as a high-leverage contributor who ships software, not just prototypes
• Expertise in distributed systems, including 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
• Alignment of platform architecture with CRM, AI/ML, and extensibility goals
• Recognized as a mentor and multiplier in technical mentorship and leadership
• Ability to partner with product and engineering leadership to define strategy and execute for product-line-wide outcomes
• Rapid domain fluency and ability to make meaningful contributions in unfamiliar areas
• Ability to elevate HubSpot's brand and help attract and retain senior talent