Senior Software Engineer II, Backend - Customer Journey Product Line

Location: Remote - Ireland

Department: Engineering

About the Role

At HubSpot, we're transforming how businesses grow through inbound marketing, sales, and service software. As a Senior Software Engineer II, Backend on the Customer Journey Product Line, you'll play a pivotal role in building the backend systems that power personalized customer experiences for millions of users. Our Customer Journey team focuses on orchestrating seamless interactions across the entire buyer lifecycle, leveraging HubSpot's CRM to deliver data-driven insights and automation. You'll work in a collaborative, growth-oriented culture where innovation meets impact, contributing to products that help companies attract, engage, and delight their customers at scale. In this role, you'll design and implement high-performance services that handle massive data volumes from marketing campaigns, sales pipelines, and service tickets. Expect to dive deep into event-driven architectures, optimize APIs for real-time personalization, and ensure our platform scales effortlessly as HubSpot grows. You'll partner closely with product teams to translate customer feedback into robust features, while mentoring engineers and driving technical excellence. Our HEARTWAY values—Humble, Empathetic, Adaptable, Remarkable, Transparent—guide everything we do, fostering an environment where your ideas can shape the future of inbound. Joining HubSpot means embracing a culture of continuous learning and radical transparency. You'll have the autonomy to experiment, fail fast, and iterate, all while enjoying unlimited PTO, comprehensive benefits, and opportunities to advance your career in a company that's consistently ranked as a top place to work. If you're passionate about backend engineering and excited to build tools that accelerate customer growth, apply today and help us make the world a more human place for business.

Key Responsibilities

• Design, build, and maintain scalable backend services powering HubSpot's Customer Journey product line
• Collaborate with product managers, designers, and frontend engineers to deliver seamless customer experiences
• Optimize system performance and reliability for millions of inbound marketing users worldwide
• Architect data pipelines and APIs that enable personalized customer journeys and CRM integrations
• Lead code reviews, mentor junior engineers, and foster a culture of technical excellence
• Implement robust monitoring, logging, and alerting to ensure 99.99% uptime
• Experiment with new technologies to drive innovation in customer engagement features
• Partner with cross-functional teams to align engineering efforts with HubSpot's growth goals
• Contribute to technical debt reduction and platform evolution for long-term scalability
• Champion best practices in security, compliance, and data privacy for customer data handling

Required Qualifications

• Bachelor's degree in Computer Science, Engineering, or related field, or equivalent practical experience
• 8+ years of professional software engineering experience, with a focus on backend development
• Deep expertise in building scalable backend systems using Java, Python, or Go
• Proven track record of designing and optimizing APIs for high-traffic applications
• Strong experience with cloud platforms such as AWS, GCP, or Azure, and containerization tools like Docker and Kubernetes
• Hands-on experience with relational and NoSQL databases (e.g., PostgreSQL, DynamoDB, Redis)
• Demonstrated ability to lead technical projects and mentor junior engineers
• Excellent problem-solving skills and ability to thrive in a fast-paced, growth-oriented environment

Preferred Qualifications

• Experience working with CRM systems or customer data platforms like HubSpot
• Familiarity with inbound marketing concepts and customer journey orchestration
• Contributions to open-source projects or technical blogging
• Knowledge of event-driven architectures and microservices
• Experience with HubSpot's developer tools, APIs, or integrations
• Advanced proficiency in data modeling for customer analytics and personalization

Required Skills

• Backend programming (Java, Python, Go)
• API design and REST/GraphQL
• Microservices architecture
• Cloud infrastructure (AWS/GCP/Azure)
• Containerization (Docker, Kubernetes)
• Databases (SQL/NoSQL)
• Event-driven systems (Kafka, RabbitMQ)
• Performance optimization and scaling
• CI/CD pipelines (Jenkins, GitHub Actions)
• Monitoring tools (Prometheus, Datadog)
• Problem-solving and debugging
• Collaboration and communication
• Mentoring and leadership
• Agile methodologies
• Customer-centric thinking
• Growth mindset and adaptability

Benefits

• Competitive salary and equity in a publicly traded company
• Comprehensive health, dental, and vision insurance with 100% premium coverage for employees
• Unlimited PTO and flexible work-from-anywhere policy
• HubSpot Academy certification stipend and ongoing learning opportunities
• Generous parental leave and family planning benefits
• Home office setup allowance and wellness reimbursement
• Annual company retreats and team offsites focused on culture and growth
• 401(k) matching and employee stock purchase program
• Volunteer time off and charitable donation matching through HubSpot for Good

HubSpot is an equal opportunity employer.