(Senior) AI Engineer — Search & NLP

Berlin based - m/f/d - full-time

What we do at Plato

Plato is the AI-powered Sales Intelligence platform built specifically for B2B wholesale. We transform reactive sales teams into proactive revenue engines by surfacing hidden opportunities in their data.

The Challenge

Why this role is different:

B2B wholesale sits on massive amounts of data — millions of transactions, complex product catalogs, customer communications — but accessing it requires SQL expertise or clicking through endless dashboards. We're building AI that lets users simply ask questions and get answers, extract information from documents automatically, and find what they need instantly.

This isn't consumer AI. This is enterprise language intelligence for wholesale.

In B2C, you optimize for engagement. In B2B wholesale, you optimize for precision and trust. Your text-to-SQL needs to handle complex joins across orders, customers, and products. Your search needs to understand that "M8 hex bolt DIN 933" and "hexagon head screw 8mm" might be the same thing. Your extraction pipeline needs to parse a PDF quote request and map it to 50,000+ SKUs without errors.

Your systems will power real business outcomes:

• A user searches for a product and finds it even when their terminology doesn't match the catalog

• A sales rep asks "Which customers decreased orders by more than 20% this quarter?" and gets an instant answer from their data

• An email arrives with a quote request — your system extracts line items and creates a draft order automatically

• A manager asks "What's our revenue by product category for customer X?" and gets a chart, not a ticket to the BI team

Welcome to language AI for wholesale — where natural language meets structured data, and where the right query at the right time transforms how businesses operate.

Why This Role Matters

Language understanding is becoming core to Plato's value proposition. We're building AI features that require deep NLP capabilities: natural language interfaces to business data, search that understands wholesale terminology, and document extraction that automates manual workflows.

You won't be integrating off-the-shelf solutions. You'll be building language AI systems that become a competitive advantage — text-to-SQL that handles complex B2B queries, domain-specific retrieval, and intelligent document processing.

Short Description

We're looking for a Senior ML/AI Engineer to own language AI at Plato. You'll build the NLP infrastructure that powers multiple product areas: conversational analytics (chat with your data / text-to-SQL), semantic search, document extraction, and AI chat interfaces. This is a broad role combining structured data querying, retrieval systems, and information extraction.

Responsibilities

• Build text-to-SQL systems that let users query business data in natural language

• Design and build semantic search infrastructure serving both UI search and agentic AI features

• Develop information extraction pipelines that turn emails, PDFs, and documents into structured, actionable data

• Create AI chat interfaces that combine data queries with document retrieval

• Own retrieval architecture: embedding pipelines, hybrid search, reranking, evaluation

• Build evaluation frameworks and feedback loops that improve systems over time

• Fine-tune models on B2B wholesale domain data where off-the-shelf solutions fall short