Plain is a customer support platform built around AI-first architecture and a public API. The tech stack reveals heavy investment in AI infrastructure (Claude, Anthropic, OpenAI, RAG) paired with backend systems (PostgreSQL, n8n) designed for reliability and scale. Hiring is engineering-skewed (43 of 64 roles) with acute focus on AI data pipelines, backend architecture, and infrastructure — a pattern that maps directly to their stated pain around AI accuracy and system scalability.
Plain provides an AI-native customer support platform targeting engineering and operations teams at mid-market SaaS companies. The product surfaces support interactions across multiple channels (Slack, Discord) through a unified interface, backed by a public API for programmatic access and customization. The company is UK-based, founded in 2020, and currently scaling rapidly — the active hiring mix skews heavily toward backend and infrastructure engineering, with emerging go-to-market activity in the US.
Plain uses Claude and OpenAI for AI models, PostgreSQL for data persistence, PostHog for analytics, Vercel for deployment, and n8n for workflow automation. They're actively adopting PostHog, Linear, and Vercel.
Plain is recruiting across United States, United Kingdom, Italy, Bulgaria, Netherlands, Poland, Germany, Romania, Ireland, Denmark, France, Portugal, Estonia, Belgium, Hungary, and Sweden.
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