AI Software Engineer

OllyGarden helps engineering teams get reliable OpenTelemetry data. Rose is our AI agent for OpenTelemetry instrumentation. It reviews customer code for instrumentation problems, opens pull requests that fix them, adds baseline instrumentation where there is none, and migrates services off proprietary agents. We also publish open source agent skills that give coding agents accurate, current OpenTelemetry knowledge. Rose uses them, and so do coding agents everywhere.

You will build Rose with a small team and own those skills. The codebase is TypeScript and covers a Cloudflare Workers control plane, sandboxed agent runs and our own agent harness. You will report to our CEO, Juraci Paixão Kröhling.

What you'll do

• Build Rose features from spec to production. You'll start with GitLab support and a flow that turns findings from our telemetry analysis into fixes across a customer's repositories
• Make agent runs reliable: structured output, retries, long-running sandbox jobs, and findings that stay stable from one run to the next
• Build the evaluations that tell us whether a prompt or model change made Rose better, and what it cost
• Engineer context for agents that review and change Go, Java, Kotlin, TypeScript, Python and .NET code
• Maintain our open source agent skills. That means keeping them current with each OpenTelemetry release, reviewing community contributions, and requiring evals that show each change helps agents
• Work with customer engineers when a delivery needs it, together with our Customer Success team

What we're looking for

• Senior engineering experience, including an LLM agent or AI-assisted product you shipped to production and kept running
• Strong TypeScript and backend skills: APIs, webhooks, durable workflows and Postgres
• Evidence that you measured LLM quality with evals, golden sets or production signals, and changed course based on the results
• Comfort reading and safely changing code in languages you don't write every day
• Clear writing and an async-first way of working: design docs, PR descriptions and summaries
• Based in Europe or Latin America
• Experience instrumenting services with OpenTelemetry, or working on observability tooling
• Experience maintaining an open source project, especially in the OpenTelemetry ecosystem
• Experience writing agent skills, plugins or MCP servers for coding agents
• GitHub App or GitLab integrations, sandboxed code execution, Cloudflare Workers or Bun
• Enthusiasm for sharing your work in public, from blog posts to conference talks

What this role is not

This is an individual-contributor product engineering role. It is not ML research, model training or data science.

How we hire

The process is practical. We want to see agent systems you've shipped and how you knew they worked.

• A conversation with an engineer from the Rose team
• A technical deep dive into an agent system you shipped: architecture, failure modes and how you measured quality
• A paid, self-contained exercise based on a real Rose problem
• A conversation with Juraci Paixão Kröhling, followed by reference calls