Senior Software Engineer II – Messaging Platform

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November 20

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HubSpot

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B2B • SaaS • Marketing

HubSpot is an AI-powered customer platform that combines marketing, sales, and customer service software into one integrated suite. With over 238,000 customers in 135 countries, HubSpot offers tools for marketing automation, sales management, customer service, content marketing, operations, and B2B commerce. With products like Marketing Hub, Sales Hub, Service Hub, and Content Hub, HubSpot enables businesses to generate leads, close deals, and provide excellent customer support, all while using AI to enhance operations and insights. The platform is designed to unify teams and customer data, supporting both small startups and large enterprises in their growth journey.

1001 - 5000 employees

Founded 2006

🤝 B2B

☁️ SaaS

📋 Description

• Design, build, and maintain high-scale backend services that support email sending, routing, and deliverability across the HubSpot platform. • Contribute to the development of HubSpot’s in-house MTA and systems managing global IP networks. • Enhance reliability, observability, and performance within a mission-critical messaging pipeline. • Collaborate closely with infrastructure teams, product managers, and deliverability experts to ensure safe, consistent, high-quality message delivery. • Lead design discussions, participate in architectural decisions, and help shape long-term technical strategy. • Write clean, testable, and maintainable code that follows best practices for distributed systems and network-intensive workloads. • Engage in code reviews, mentor fellow engineers, and foster a culture of learning and operational excellence.

🎯 Requirements

• Has 7+ years of backend engineering experience working on highly available, scalable systems. • Is comfortable working with technologies like Java, Kotlin, MySQL, Kafka, HBase, and Kubernetes (experience with specific stacks is less important than strong fundamentals). • Understands distributed systems, networked services, and high-throughput data flows. • Enjoys solving complex reliability, throughput, and performance challenges. • Communicates clearly and collaborates effectively with engineers, PMs, designers, and domain experts. • Builds with empathy for the end user—and for the downstream teams who build on our infrastructure. • Thrives in an environment where curiosity, pragmatism, and resourcefulness drive impact.