Senior Software Engineer, Content Agent
Sanity is hiring a senior engineer for Content Agent, its operations layer for structured content — the system that turns content work such as bulk edits, audits, translation, and publishing into things an agent can actually run. It lives in Dashboard, Studio, Slack, and behind a headless API, and must understand schemas, references, field types, and validation rules well enough to be trusted to operate on them correctly. The role is full-stack product work in TypeScript and React: MCP tools and integrations, agent orchestration, system prompts, and evals, based in London or Oslo with 2-3 office days per week.
Stack
Responsibilities
- ▹Full-stack product work: React interfaces in Dashboards, APIs, backend services
- ▹Build MCP tools and integrations that extend what the agent can do
- ▹Develop agent loops: the orchestration logic deciding what the agent does, in what order, and when to bring a human in
- ▹Write and maintain system prompts, treated as real engineering artifacts
- ▹Run evals and experiments to measure and improve reliability in real usage
- ▹Use GROQ, Sanity's content query language, to give the agent a deep understanding of structured content
- ▹Shape what Content Agent becomes, together with product and design
Requirements
- ▹Location: London, UK or Oslo, Norway (in-office 2-3 days/week)
- ▹Strong TypeScript and React, comfortable across the stack (frontend, APIs, backend)
- ▹Experience shipping LLM-based systems in production
- ▹Systems thinking: reasoning through user intent, edge cases, failure modes, and architectural implications of agent capabilities
- ▹Strong writing skills and a feel for how the phrasing of agent instructions is actually parsed
- ▹Comfort with probabilistic systems: running experiments, designing evals, reading results statistically
- ▹Real experience with, or real curiosity about, MCP, tool-use patterns, and agent architectures
Nice to have
- ▹Non-traditional background (writing, interaction design, liberal arts) with real engineering skills built on top
Soft skills
What we offer
- ▹A highly-skilled, inspiring, and supportive team
- ▹Positive, flexible, and trust-based work environment encouraging long-term professional and personal growth
- ▹A global, multi-culturally diverse group of colleagues and customers
- ▹Comprehensive health plans and perks
- ▹A healthy work-life balance accommodating individual and family needs
- ▹Competitive stock options program and location-based salary
About the company
Sanity.io builds an AI-powered content operating system that lets teams model, create, and automate content the way their business runs. SKIMS, Figma, Riot Games, Anthropic, COMPLEX, Nordstrom, and Morningbrew run their content operations on it. The 200+ person company recently raised an $85m Series C led by GP Bullhound, with backers including ICONIQ Growth, Threshold Ventures, Heavybit, and Shopify.