Full-Time

Senior Software Engineer

Content Agent

Sanity

Sanity

201-500 employees

API-powered customizable CMS for content

No salary listed

London, UK

Hybrid

In-office 2–3 days per week required.

Category
Software Engineering (2)
,
Required Skills
LLM
React.js
TypeScript
REST APIs
Requirements
  • Location: London, UK or Oslo, Norway (in-office 2–3 days/week)
  • Strong TypeScript and React, comfortable across the stack (frontend, APIs, backend). You don't want to be boxed into one layer.
  • You've shipped LLM-based systems in production. You know the hard part isn't getting a model to do something once; it's getting it to do the right thing for every user who shows up.
  • You think in systems. Given a new agent capability, you think through user intent, edge cases, failure modes, and what that means for the architecture: what the agent knows, what tools it has, when it escalates.
  • You write well and you care about why one phrasing works where another doesn't. An agent's instructions are prose running on a system that reads literally. Writing them well takes a feel for how language lands, not just what it says - who "you" refers to, what's implied versus explicit, how a sentence will actually be parsed.
  • You're comfortable with probabilistic systems. Improving an LLM product means running experiments, designing evals, reading results statistically, and not chasing individual failures when the aggregate trend is what matters. You've moved past "it compiles or it doesn't."
  • Real experience with, or real curiosity about, MCP, tool-use patterns, and agent architectures.
  • You care about craft in code, in writing, and in the products you ship.
Responsibilities
  • Full-stack product work: React interfaces in Dashboards, APIs, backend services.
  • MCP tools and integrations that extend what the agent can do.
  • Agent loops: the orchestration logic that decides what the agent does, in what order, and when to bring a human in.
  • System prompts. We treat these as real engineering artifacts, not a note at the top of a file.
  • Evals and experiments to measure and improve reliability in real usage.
  • GROQ, Sanity's content query language - using it to give the agent a deep understanding of structured content.
  • Shaping what Content Agent becomes, with product and design. There's a lot of latitude here.

Sanity.io offers a highly customizable API-centric CMS that helps businesses manage content from multiple sources and deliver data-driven experiences across channels. Its core product, Sanity Studio, is a real-time toolkit that separates content from presentation, enabling teams to create and reuse content as data for different platforms. The platform emphasizes a flexible, composable architecture and strong developer experience, with seamless integration of external data sources and workflows. Its goal is to help organizations modernize their content strategies, improve operational efficiency, and deliver consistent, branded experiences at scale.

Company Size

201-500

Company Stage

Series C

Total Funding

$137.1M

Headquarters

Oslo, Norway

Founded

2018

Simplify Jobs

Simplify's Take

What believers are saying

  • Sanity hit $40M ARR in 2024, serving 30,000 organizations like Puma and AT&T.
  • $85M Series C from Bullhound Capital fuels AI Content Operating System expansion.
  • Google Cloud Marketplace partnership accelerates enterprise adoption since 2024.

What critics are saying

  • OpenAI Canvas undercuts Sanity Create, driving enterprises to integrated LLMs within 6-12 months.
  • Vercel and Netlify add native CMS, reducing Sanity dependency in 12-18 months.
  • Contentful slashes prices and matches AI features, eroding Sanity's premium positioning immediately.

What makes Sanity unique

  • Sanity treats content as structured data for reusable, multi-channel delivery.
  • Sanity Studio enables real-time, customizable editing workflows for teams.
  • Agent Context compresses schemas for precise AI agent interactions without vectors.

Help us improve and share your feedback! Did you find this helpful?

Your Connections

People at Sanity who can refer or advise you

Benefits

Health Insurance

Flexible Work Hours

Stock Options

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

0%

2 year growth

1%
MarTech360
Mar 5th, 2026
Sanity Unveils AI-Powered Content Operating System to Enable Scalable AI Content Operations

Sanity unveils ai-powered Content Operating System to enable scalable AI content operations. Sanity has announced the evolution of its platform into a Content Operating System for the AI era. The platform is designed to enable organizations to gain access to the infrastructure needed to build, automate, and scale AI-based content operations. It is an intelligent backend for teams using AI across digital experiences. The platform is built on three key principles: modeling business data effectively, automating workflows, and supporting flexible integrations. It is designed to enable organizations to effectively manage their content ecosystems while supporting AI-based applications in production environments. By providing a structured content modeling solution alongside automation and AI-based infrastructure, Sanity claims that its platform is an operational backbone for modern content strategies enabled by AI. Expanding AI capabilities across the content lifecycle. Sanity has been releasing a range of native AI tools in recent months that are meant to assist businesses in operationalizing AI within their content workflows. The tools are meant to assist in managing large-scale content management tasks in a structured manner. One of the core innovations is the Sanity Content Agent, which can execute complex content operations directly within editorial environments. The agent is capable of analyzing thousands of pages to identify strategic gaps, audit content libraries, and prepare materials for publishing workflows. This enables content teams to maintain consistency and quality while scaling operations across large digital portfolios. Furthermore, the automation capabilities of the platform can be extended with Functions, which, together with the Agent API, enables organizations to automate translations, content distribution, as well as publishing across multiple channels. This, in turn, can help minimize operational costs while ensuring that content management is always dynamic. Furthermore, Sanity has also introduced an MCP server, which can be used for providing safe access for AI agents that operate outside of the system, allowing them access to structured content. This, in turn, can help eliminate the need for creating duplicate content repositories, as well as for custom integrations, which can be necessary for the development of AI-based applications and services. Introducing Agent Context for smarter AI interaction. Sanity's latest native AI feature, Agent Context, advances the company's broader vision for intelligent content infrastructure. Instead of relying on traditional vector-based retrieval methods, the system compresses an organization's Sanity schema so that AI agents can interpret the structure and relationships within the content model itself. With this approach, AI systems are able to translate natural language queries into precise data queries that align directly with the organization's content architecture. By maintaining the relationships and validation rules embedded in the schema, Agent Context allows AI agents to interact with content more intelligently. This structured understanding helps avoid the limitations of flattened embeddings or probabilistic vector searches that often strip away contextual relationships. As a result, AI systems can move beyond approximate retrieval toward deeper reasoning about how content elements connect across a company's digital ecosystem. "When content is modeled intentionally - with relationships, validation rules, governance, and real-time APIs - AI systems stop guessing and start reasoning," said Magnus Hillestad, co-founder and CEO of Sanity. "That's the foundation companies need to compete." Enabling the next generation of ai-driven content operations. As AI becomes increasingly integrated into marketing strategies, digital experience management, and content operations, the need for structured AI-ready content infrastructure continues to rise. As Sanity continues to develop its evolving concept of Content Operating System, it aims to help businesses meet the need for infrastructure that allows AI-ready content to be accessed and utilized effectively. This means that businesses can leverage Sanity to move beyond experimental AI operations and into fully functional AI operations with its structured content architecture, automation layers, and agent-ready contexts. For businesses looking to take advantage of the evolving AI landscape, moving into structured AI-ready content infrastructure like Sanity is one key step in making generative AI operations a tangible business reality.

PR Newswire
Mar 4th, 2026
Sanity launches AI Content Operating System to automate enterprise content operations at scale

Sanity has announced the evolution of its platform as the Content Operating System for the AI era, positioning itself as an intelligent backend for companies building AI content operations at scale. The platform is built around three pillars: model your business, automate everything, and power anything. Recent native AI features include Content Agent, which handles complex content operations like auditing and publishing, and Agent Context, which enables AI agents to understand structured content through schema compression rather than vector embeddings. The platform's Functions and Agent API extend automation across translation, distribution and publishing. Multimedia company Complex has automated its e-commerce editorial operations using Sanity, whilst online travel agency loveholidays replaced a £300,000-per-year translation agency. Two content specialists now manage content for over 50,000 hotels, launching new markets in days rather than months.

Sanity
May 12th, 2025
The end of CMS era and our $85M Series C. | Sanity

Why the age of CMS is over and why we raised $85M Series C to empower all developers to build, scale and ship all content applications across teams.

GP Bullhound
May 8th, 2025
Sanity Secures $85M Series C Funding

Sanity has raised $85 million in a Series C round led by Bullhound Capital. The company offers a platform that treats content as reusable data, making it AI-ready and multi-channel friendly. In 2024, Sanity surpassed $40 million in annual recurring revenue and expanded its global reach to support over 30,000 organizations. The platform is used by brands like Skims, Puma, and ATT to enhance content operations.

Sanity
Sep 5th, 2024
Sanity partners with Google. Now live on the Google Cloud Marketplace.

Sanity AS is really excited about partnering with Google and making its Content Operating System available through the marketplace.