Senior Software Engineer II, Backend - Intelligence Team in London

The Customer Journey Intelligence Backend team builds the foundation for HubSpot's personalized customer experiences. We power the systems behind smarter onboarding, recommendations, and routing, helping customers get value from HubSpot faster and more intuitively.

Our work spans key services such as the Tasks Recommendation Service, Route Recommendation Service, Onboarding Engine, and Third‐Party Data Sync, which together enable adaptive, data‐driven onboarding and everboarding experiences across the platform.

What You'll Do

• Design and build scalable backend systems that deliver personalized recommendations and adaptive customer journeys.
• Lead the technical direction for services such as the Tasks Recommendation Service and the Route Recommendation Service.
• Partner closely with AI, data, and product teams to integrate contextual signals and machine‐learning models into real‐time decisioning systems.
• Collaborate closely with product managers to deeply understand customer needs, pain points, and workflows.
• Translate user problems into technical solutions, ensuring all backend systems genuinely enhance end‐user experiences and deliver real value.
• Improve the scalability, reliability, and performance of our third‐party data integrations and synchronization pipelines.
• Mentor peers and help shape the long‐term technical strategy for the Intelligence product area.

We're Looking For Someone Who

• Has strong backend engineering expertise, ideally in Java (or Kotlin).
• Brings experience building distributed systems, APIs, or large‐scale recommendation or personalization services.
• Champions a product mindset within the engineering team, balancing technical excellence with empathy for the user and business context.
• Understands microservice architecture and cloud infrastructure (AWS or GCP).
• Makes thoughtful, data‐driven decisions and thrives in a fast‐moving environment.
• Cares deeply about building intelligent systems that make complex experiences feel simple for customers.

Bonus Skills

• Experience working with machine‐learning‐powered recommendations or routing engines.
• Familiarity with event‐driven architectures or streaming platforms such as Kafka or Pub/Sub.
• Background in customer onboarding, personalization, or journey optimization products.

We know the confidence gap and impostor syndrome can get in the way of meeting spectacular candidates, so please don't hesitate to apply — we'd love to hear from you.

If you need accommodations or assistance due to a disability, please reach out to us using this form.

At HubSpot, we value both flexibility and connection. Whether you're a remote employee or work from the office, we want you to start your journey here by building strong connections with your team and peers. If you are joining our Engineering team, you will be required to attend a regional HubSpot office for in‐person onboarding. If you join our broader Product team, you'll also attend other in‐person events such as your Product Group Summit and other gatherings to continue building on those connections. If you require an accommodation owing to travel limitations or other reasons, let us know during the hiring process.

About HubSpot: HubSpot (NYSE: HUBS) is an AI‐powered customer platform with all the software, integrations, and resources customers need to connect marketing, sales, and service. HubSpot's connected platform enables businesses to grow faster by focusing on what matters most: customers.

At HubSpot, bold is our baseline. Our employees around the globe move fast, stay customer‐obsessed, and win together. Our culture is grounded in four commitments: Solve for the Customer, Be Bold, Learn Fast, Align, Adapt & Go!, and Deliver with HEART. These commitments shape how we work, lead, and grow.

We're building a company where people can do their best work. We focus on brilliant work, not badge swipes. By combining clarity, ownership, and trust, we create space for big thinking and meaningful progress. And we know that when our employees grow, our customers do too.

Recognized globally for our award‐winning culture by Comparably, Glassdoor, Fortune, and more, HubSpot is headquartered in Cambridge, MA, with employees and offices around the world.