Staff Backend Engineer- Agent Experience

Job title: Staff Backend Engineer- Agent Experience

Cloudinary is seeking a Staff Backend Engineer- Agent Experience in Kraków to help agents (LLMs, coding assistants, autonomous pipelines) integrate with Cloudinary's media platform. This role focuses on building agent-facing infrastructure and shaping APIs for machine-based callers, ensuring reliable, scalable backend systems that agents can depend on.

What You'll Do

• Build the surfaces agents call directly: API-first account provisioning, machine-to-machine authentication, scoped credentials, and agent-level identity and attribution.
• Own our MCP (Model Context Protocol) servers and an agent-first CLI — let coding agents and LLMs discover and invoke Cloudinary reliably, engineered for agentic callers: token-efficient tool schemas, machine-parseable output, and loud, actionable failures instead of silent ones.
• Harden the agent media path — make upload and core media operations reliable for non-human callers, eliminating the ambiguity and silent-failure modes that cause agents to drop off mid-task.
• Make agent behavior measurable — partner on the instrumentation, signals, and attribution that tell us whether agents are succeeding.
• Work across a polyglot backend — Node.js/TypeScript for the agent tooling layer, with Ruby/Rails and Go in the core platform.
• Ship, measure, iterate — prototype quickly, dogfood the experience, and represent the agent's perspective in every design decision.
• Work closely with Product, Ecosystem, and Discoverability across the AX team.

What We're Looking For

• 10+ years building and operating production APIs, SDKs and Backend systems at scale.
• Strong in Node.js/TypeScript, and comfortable working in (or quickly ramping on) Ruby/Rails and/or Go.
• Deep API and protocol design fundamentals — authentication (OAuth, API keys, scoped permissions), versioning, idempotency, rate limiting, clean contracts.
• Genuine curiosity about agents and LLMs and how they're reshaping how software gets built and run.
• Solid distributed-systems and cloud instincts (AWS or equivalent).
• A bias for ownership in ambiguity — you scope the problem, not just the solution, and you ship.
• Strong written communication — it matters more than usual when your consumers are machines and your teammates are distributed.

Nice to Have

• Hands-on experience with MCP, LLM tool/function-calling, or building AI-/agent-native products.
• Experience building SDKs, CLIs, or developer tools that other engineers depend on.
• Background in media, imaging, or video processing/delivery.
• Open-source contributions in the agent or developer-tooling ecosystem.

Compensation & Benefits

• Equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.