Product Engineer (Backend/AI) @Briink

Briink builds AI technology for the sustainability economy. The Backend/AI Product Engineer owns product features end to end, builds scalable backend systems and applied AI/LLM capabilities, and improves the reliability of products used by sustainability professionals.

Responsibilities:

• Own product features end to end, from understanding the user problem and defining the right approach through to delivery, measurement, and improvement
• Design and build scalable backend systems, including APIs, data models, workflows, and infrastructure for complex enterprise products
• Build and ship applied AI/LLM features, such as LLM chains, RAG systems, tool-using agents, structured-output pipelines, and evaluation workflows
• Create reusable, extensible platform building blocks that support multiple user journeys and reporting workflows rather than solving each problem in isolation
• Improve the robustness of our systems, strengthening reliability, testing, observability, performance, and maintainability as we scale
• Work directly with users, product, and data, using qualitative feedback and product data to understand the real problem and evaluate whether a solution works
• Prototype and test new AI capabilities, turning promising ideas into practical product improvements that accelerate our roadmap
• Bring thoughtful opinions and constructive challenge, helping the team make better product and technical decisions
• Collaborate closely with other engineers, including through pair programming, technical design discussions, and shared problem-solving