Backend Engineer • Senior

Who you are

You have 5+ years of backend engineering experience building production systems at scale — you've owned services from design through deployment and have navigated complex distributed systems issues. You possess deep expertise in Java and Python — you've shipped high-throughput APIs that handle millions of requests and have strong opinions on service architecture, dependency injection, and testing strategies. Your experience includes working with machine learning models — you understand how to integrate contextual signals into real-time decisioning systems and enhance user experiences through data-driven solutions. You are a collaborative team player who partners closely with product managers and AI teams to translate user problems into technical solutions, ensuring backend systems genuinely deliver value. You have a passion for mentoring peers and helping them grow in their technical capabilities, fostering a culture of continuous improvement within your team.

Desirable

Experience with cloud platforms such as AWS or Azure would be a plus, as would familiarity with data synchronization pipelines and third-party integrations. A background in customer experience or personalization technologies is also desirable, as it aligns with the mission of the Intelligence Team.

What you'll do

As a Senior Backend Engineer II on the Intelligence Backend team, you will design and build scalable backend systems that deliver personalized recommendations and adaptive customer journeys. You will lead the technical direction for services such as the Tasks Recommendation Service, which personalizes onboarding tasks based on each user’s goals and context. You will partner closely with AI, data, and product teams to integrate contextual signals and machine learning models into real-time decisioning systems. Your role will involve collaborating closely with product managers to deeply understand customer needs, pain points, and workflows, translating these insights into technical solutions that enhance end-user experiences. You will also focus on improving the scalability, reliability, and performance of third-party data integrations and synchronization pipelines. Mentoring peers and helping them grow in their technical capabilities will be a key part of your responsibilities, fostering a culture of continuous improvement within your team.

What we offer

At HubSpot, you will be part of a dynamic team that is dedicated to building the foundation for personalized customer experiences. We offer a competitive salary and benefits package, along with opportunities for professional development and growth. You will work in an inclusive environment that values collaboration and innovation, where your contributions will have a direct impact on our customers' success. Join us in our mission to help businesses grow better.