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HubSpot logo
HubSpot

The easy-to-use CRM to scale your business.

Senior Software Engineer II, Flywheel Foundations

Full-stack EngineerSoftware EngineerFull TimeRemoteSeniorTeam 1,001-5,000Since 2006H1B SponsorCompany SiteLinkedIn

Location

Ireland

Posted

91 days ago

Salary

£97K - £155.2K / year

Seniority

Senior

Bachelor DegreeEnglishJava

Job Description

Senior Software Engineer II, Flywheel Foundations

HubSpot

• Design, build, and operate backend services that power context retrieval, enrichment, and insight generation across HubSpot’s platform. • Build systems for storing, processing, and retrieving high-volume GTM data (e.g., contact history, CRM activity, behavioral signals). • Develop scalable data processing and streaming solutions to support AI-driven use cases. • Create reusable platform capabilities and APIs that enable other product teams to build smarter AI assistants and agents. • Contribute to evaluation and quality frameworks to ensure context accuracy, reliability, and performance. • Collaborate closely with platform teams and downstream product engineering teams to integrate capabilities into real customer experiences. • Own end-to-end delivery: architecture, implementation, observability, performance, and iteration in production environments.

Job Requirements

  • Strong track record shipping production backend systems as a senior engineer, with ownership from design through operation.
  • Professional experience building maintainable, scalable backend services (Java preferred).
  • Strong data background and experience working with large datasets, data pipelines, and data-intensive systems.
  • Experience building or integrating AI/ML-adjacent systems in production (e.g., retrieval pipelines, embeddings, ranking systems, model-backed services, or similar).
  • Experience operating systems at scale, including performance optimization and reliability considerations.
  • Strong engineering fundamentals: system design, testing, debugging, observability, and operational excellence.
  • Product mindset - comfortable collaborating cross-functionally and building platform capabilities used by other engineering teams.

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