Staff Product Engineer

Role Overview

• Own delivery of ML-powered features from concept through production. You are responsible for the feature working in practice.
• Work side by side with our ML experts to drive ideas into reliable, production-ready systems.
• Engage directly with customers and internal stakeholders to understand real-world usage and translate those insights into product and engineering decisions.
• Use AI coding tools (Cursor, Claude Code, or similar) as a primary part of your daily workflow to read, write, and test code, while critically evaluating output and catching subtle errors before they ship.
• Ensure models, retrieval systems, and agent workflows function correctly together across the full system.
• Lead implementation of ML-driven features, coordinating with ML engineers and the rest of the team to get features shipped.
• Build and maintain evaluation systems, including datasets, scoring approaches, and repeatable testing to detect regressions.
• Design and iterate on prompts and agent instructions to ensure correct and predictable system behavior.
• Establish and improve observability, debugging, and testing practices for ML systems.
• Improve the structure, reliability, and maintainability of the ML codebase while preserving development speed.
• Work primarily in Python, and contribute in Go and other languages where needed.
• Modify and work with pipelines, retrieval systems, and model behavior when required.
• Advocate for the right technical approach and push back when needed to keep the work grounded in customer outcomes.
• Orchestrate workflows across APIs, external systems, and multiple data sources.
• Balance rapid experimentation with longer-term system quality.
• Work with customers and internal stakeholders to ensure solutions align with real-world usage.

Requirements

• Strong software engineering background, with experience building and owning production systems end to end.
• Strong proficiency in Python and Go, with a track record of building well-structured and maintainable systems.
• Daily, fluent use of AI coding tools (Cursor, Claude Code, or similar) as a core part of your engineering workflow. You write effective prompts, iterate when output is wrong, and reliably distinguish working code from code that only looks right.
• Experience delivering complex features in production environments, ideally involving ML or AI systems.
• Demonstrated ability to take ownership of ambiguous problems and drive them to working solutions.
• Hands-on experience building with LLMs, RAG systems, and agent-based workflows, with a solid conceptual grounding in how these systems work, fail, and need to be evaluated.
• Experience working with LLMs, RAG systems, or agent-based workflows.
• Experience integrating multiple systems, APIs, and data sources into cohesive product functionality.
• Experience designing or working with evaluation systems for ML quality.
• Experience debugging production systems, including handling edge cases and failure modes.
• Experience with observability and debugging in ML or backend systems.
• Experience working with pipelines, retrieval systems, or model behavior such as ranking, fine-tuning, or prompt tuning.
• Comfortable operating in fast-moving environments with high ownership.
• Experience working with customers or customer-facing systems, incorporating feedback into what gets built.
• Familiarity with frontend or full-stack development.
• Experience with MLOps systems, data pipelines, or production ML infrastructure.
• Familiarity with open source models such as LLaMA, Qwen, DeepSeek, Kimi, or similar.

Tech Stack

• Open Source
• Python
• Go

Benefits

• Early-Stage Ownership: Join at the ground floor of a company with real traction and momentum.
• Empowered Culture: We value autonomy, candor, and craft. You'll be trusted to lead.
• Cutting-Edge Tech: Work with the latest in AI, backend systems, and intelligent infrastructure.
• Meaningful Impact: Shape a platform that transforms how organizations activate knowledge.
• Holistic Benefits: Competitive comp, equity, 100% paid healthcare, 401K, flexible PTO, and a team that truly cares.