Senior Software Engineer II, Backend - Intelligence Team

Location: Flex - London, United Kingdom

Department: Engineering

About the Role

At HubSpot, we empower businesses to grow better through our world-class CRM platform and inbound marketing solutions. We're seeking a Senior Software Engineer II, Backend on our Intelligence Team to build the intelligent backbone that drives actionable insights for millions of customers. In this role, you'll architect scalable backend systems that process vast amounts of sales, marketing, and customer data, enabling AI-powered features that fuel growth. As part of our vibrant engineering culture, you'll thrive in a collaborative environment where innovation, ownership, and customer obsession are at the heart of everything we do. Your day-to-day will involve leading the development of high-performance microservices, optimizing data pipelines for real-time analytics, and integrating cutting-edge ML models to supercharge HubSpot's inbound methodology. You'll work closely with product, data science, and go-to-market teams to turn complex requirements into reliable, scalable solutions that help users attract, engage, and delight their customers. Expect to mentor peers, participate in our famous hackathons, and contribute to a platform that scales to enterprise levels while maintaining the agility of a growth-stage startup. HubSpot's culture is defined by our HEART values—Humble, Empathetic, Adaptable, Remarkable, and Transparent—fostering an inclusive space where remarkable work happens through teamwork and bold ideas. If you're passionate about backend engineering, excited by CRM innovation, and ready to make a tangible impact on global customer growth, join us in redefining how businesses succeed with inbound.

Key Responsibilities

• Design, build, and maintain scalable backend services powering HubSpot's Intelligence Team features for CRM and inbound marketing
• Collaborate with product managers, data scientists, and frontend engineers to deliver intelligent insights for customer growth
• Optimize data pipelines and APIs to handle massive volumes of marketing and sales data in real-time
• Lead technical architecture decisions for microservices in cloud environments, ensuring high availability and performance
• Mentor junior engineers, conduct code reviews, and foster a culture of innovation and ownership
• Integrate AI/ML models into backend systems to enhance predictive analytics for inbound strategies
• Troubleshoot and resolve complex production issues, improving system reliability and observability
• Drive experimentation and A/B testing frameworks to accelerate feature development
• Contribute to HubSpot's growth culture by participating in hackathons and knowledge-sharing sessions
• Ensure security best practices and compliance in all backend developments
• Partner with sales and marketing teams to align engineering efforts with customer needs

Required Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience
• 7+ years of professional software engineering experience, with a focus on backend development
• Strong proficiency in building scalable backend systems using languages like Java, Python, or Go
• Deep experience with cloud platforms such as AWS, GCP, or Azure, including microservices architecture
• Proven track record of designing and optimizing databases (SQL/NoSQL) for high-performance applications
• Hands-on experience with CI/CD pipelines, containerization (Docker/Kubernetes), and monitoring tools
• Demonstrated ability to collaborate in cross-functional teams within a fast-paced, growth-oriented environment
• Strong problem-solving skills and experience delivering data-intensive features in production

Preferred Qualifications

• Experience working with CRM systems like HubSpot or Salesforce
• Familiarity with AI/ML integrations or intelligence platforms for marketing/sales data
• Contributions to open-source projects or publications in backend engineering
• Previous role in a SaaS company focused on inbound marketing or customer growth
• Master's degree in Computer Science or related field
• Experience with HubSpot's API ecosystem or inbound methodology tools

Required Skills

• Backend programming (Java, Python, Go)
• Microservices architecture
• Cloud computing (AWS/GCP/Azure)
• Database design (PostgreSQL, DynamoDB, Redis)
• API development (REST/GraphQL)
• CI/CD tools (Jenkins, GitHub Actions)
• Container orchestration (Docker, Kubernetes)
• Monitoring and logging (Prometheus, ELK stack)
• Data processing (Kafka, Spark)
• Problem-solving and debugging
• Cross-functional collaboration
• Agile methodologies
• Code review and mentoring
• Performance optimization
• Security best practices
• CRM domain knowledge
• Inbound marketing principles

Benefits

• Competitive salary and stock options in a publicly traded company
• Comprehensive health, dental, and vision insurance with 100% premium coverage
• Unlimited PTO and flexible work-from-anywhere policy
• 401(k) matching and employee stock purchase plan
• Professional development stipend for courses, conferences, and certifications
• Parental leave (16 weeks fully paid) and family planning benefits
• Wellness programs including gym memberships and mental health support
• HubSpot Academy access for ongoing learning in inbound marketing and sales
• Company-wide events, volunteer days, and a vibrant culture of HEART (Humble, Empathetic, Adaptable, Remarkable, Transparent)

HubSpot is an equal opportunity employer.