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 faced challenges in debugging complex distributed systems. Your deep expertise in Java and Python allows you to create high-performance APIs that handle millions of requests, and you have strong opinions on service architecture and testing strategies. You are comfortable collaborating with AI, data, and product teams to integrate contextual signals and machine learning models into real-time decisioning systems. You understand customer needs and workflows, translating user problems into technical solutions that enhance end-user experiences. Mentoring peers and helping them grow is something you value, as you believe in fostering a collaborative team environment.

Desirable

Experience with machine learning frameworks and data integration is a plus, as is familiarity with cloud services like AWS or Azure. You are also encouraged to apply if you have experience in agile methodologies or have worked in cross-functional teams.

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. Collaborating with product managers, you will deeply understand customer needs, pain points, and workflows, ensuring that all backend systems genuinely enhance end-user experiences and deliver real value. You will also improve the scalability, reliability, and performance of third-party data integrations and synchronization pipelines. Mentoring peers and helping them grow will be a key part of your role, as you contribute to a culture of learning and collaboration within the team.

What we offer

At HubSpot, we offer a flexible work environment that allows you to balance your professional and personal life. You will have the opportunity to work on impactful projects that shape the future of customer experiences. We provide competitive compensation and benefits, including health insurance, retirement plans, and professional development opportunities. Join us in our mission to help businesses grow better, and be part of a team that values innovation, collaboration, and continuous improvement.