Senior Software Engineer, AI Tools & Context Team

HubSpot is an AI-powered customer platform with all the software, integrations, and resources you need to connect your marketing, sales, and customer service.

HubSpot

Employee count: 5000+

United Kingdom only

HubSpot is seeking a Senior Software Engineer to join the AI Tools & Context Team. This role involves building backend systems and AI tooling to enhance agent capabilities for an internal sales team. The team focuses on creating reusable AI agents and improving the user experience through context sharing, requiring a team player who thrives in a greenfield environment. The team is initially small but plans to grow significantly.

Requirements

Building reusable agent infrastructure and internal tools to serve multiple product teams.
Developing intelligent systems for searching and extracting data.
Owning the backend architecture for agent context.
Writing reliable, maintainable, and well-tested code.
Thriving in a greenfield or ambiguous environment.
Driving quality and resilience in all phases of system development.

Benefits

Competitive salary
Opportunities for growth and learning
Collaborative and supportive work environment

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About the job

Apply before

Oct 15, 2025

Posted on

Aug 16, 2025

Job type

Full Time

Experience level

Senior

Location requirements

United Kingdom

Hiring timezones

United Kingdom +/- 0 hours

Job categories

Senior AI Engineer Senior Staff Software Engineer Senior Software Development Engineer Senior Generative AI Engineer Senior Software Engineer

Skills

Backend Systems AI Tools Agentic AI Internal Tools Backend Infrastructure Software Testing Context Sharing HubSpot

About HubSpot

Learn more about HubSpot and their company culture.

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HubSpot is an AI-powered customer platform with all the software, integrations, and resources you need to connect your marketing, sales, and customer service. HubSpot's connected platform enables you to grow your business faster by focusing on what matters most: your customers.

Our Story

In 2004, fellow MIT graduate students Brian Halligan and Dharmesh Shah noticed a major shift in the way people shop and purchase products. Buyers didn’t want to be interrupted by ads, they wanted helpful information. In 2006, they founded HubSpot to help companies use that shift to grow better with inbound marketing.

Along the way, HubSpot expanded beyond marketing into a crafted, not cobbled suite of products that create the frictionless customer experience that buyers expect today. Expertly led by CEO Yamini Rangan, HubSpot uses its customer platform built on an AI-powered Smart CRM to help millions of scaling organizations grow better.

Tech stack

Learn about the tools and technologies that HubSpot uses to build, market, and sell its products.

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Sass

Dropwizard

JavaScript

Python

HTML5

Java

CSS 3

Ruby

Swift

TypeScript

RxSwift

24 more

HubSpot employees can create an account to update this tech stack.

Employee benefits

Learn about the employee benefits and perks provided at HubSpot.

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Fertility benefits

Egg-freezing benefits to help give women more support.

Paid parental leave

In addition to our Families@HubSpot employee resource group, we offer generous paid leave to new parents.

Employee assistance program (EAP)

In addition to great healthcare coverage, we also offer all employees mental health resources, including coaching and/or therapy sessions.

Healthy@HubSpot

Beyond healthy snack options and workspaces, HubSpot offers fitness reimbursement, nutrition consultations, and workshops on mindfulness, stress management, and more.

View HubSpot's employee benefits