Staff Software Engineer, AI Serving (AI Infrastructure)

POS-22139

Location: Flex - Dublin, Ireland

This role can be Office/Hybrid/Remote based within Ireland.

HubSpot is at the forefront of empowering businesses with AI. Our AI Infrastructure group is the core of this initiative. We are seeking a Staff-level Software Engineer with a passion for infrastructure and developer experience for our AI Serving team. The team will own and operate HubSpot's model inference and serving infrastructure end‑to‑end, ensuring AI models are reliably deployed, scaled, observed, and cost‑efficient across all hublets and environments. They also lead the home for modern Python at HubSpot.

The team owns the serving frameworks and libraries that power synchronous, asynchronous, and offline inference, model deployment pipelines, autoscaling, and GPU/CPU resource management. The roadmap focuses on improving reliability and efficiency of batch inference, strengthening model observability, and scaling AI infrastructure cost‑effectively.

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• Write and ship production code that powers AI capabilities across HubSpot, driving scale and impact.
  
• Lead the evolution of model serving and inference infrastructure, improving reliability, scalability, and cost‑efficiency.
  
• Set technical direction for how HubSpot deploys and operates ML models at scale, guiding decisions on architecture, cost optimization, and developer experience.
  
• Work closely with Machine Learning Engineers, Product Software Engineers, and other Infrastructure teams to streamline model deployment and serving.
  
• Gain deep exposure to HubSpot infrastructure systems through building and maintaining core Python libraries.
  
• Collaborate across engineering, product, design, research, marketing, sales, and more, gaining holistic company perspective.
  
• Choose a work style and location that enables your best work, whether at home, in office, or a blend.
  

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• Proven track record of directly contributing to and leading infrastructure projects at scale, ideally in serving, deployment, or platform engineering.
  
• Ability to collaborate with teams to solve problems and develop overall platform architecture.
  
• Effective cross‑team leadership spanning multiple groups within AI Infrastructure and beyond.
  
• Comfort with ambiguity: taking on broad, cross‑team problems and driving them to resolution.
  
• Coaching and mentorship experience.
  
• Track record of partnering with recruiting to build remarkable engineering teams.
  
• Bonus: Python expertise; experience with Python tooling, libraries, and developer experience.
  

We know the confidence gap and imposter syndrome can hinder spectacular candidates, so please don’t hesitate to apply.

We have a supportive culture and encourage you to be authentic. If you need accommodations due to a disability, please reach out using our accommodation form.

Massachusetts Applicants: It is unlawful to require a lie detector test as a condition of employment.

Germany Applicants: (m/f/d) link to HubSpot’s Career Diversity page here.

India Applicants: link to HubSpot India’s equal opportunity policy here.

About HubSpot

HubSpot is an AI‑powered customer platform that unifies marketing, sales, and service. We focus on empowering businesses through integrated software, integrations, and resources.

Our culture revolves around four commitments: Solve for the Customer, Be Bold, Learn Fast, Align, Adapt & Go!, and Deliver with HEART. xcfaprz These commitments shape how we work, lead, and grow.