Senior Software Engineer - AI Engineering

What this role involves

Mercury is hiring a Senior Software Engineer for AI Engineering to build and scale its internal AI platform. The role involves extending MCP servers, LLM gateway infrastructure, and shared knowledge layers. The ideal candidate has 5+ years backend experience and hands-on LLM production experience.

Skills this posting asks for

• backend development
• platform engineering
• infrastructure
• developer tooling
• llm
• rag
• agents
• eval frameworks
• mcp
• llm gateway
• prompt engineering
• guardrails
• policy-as-code
• knowledge management
• sandbox tooling

Requirements

• 5 years of experience
• Level: senior

From the employer’s posting

In 1600, William Gilbert published De Magnete—the first systematic study of magnetism. He didn't just theorize; he built instruments, ran experiments, and shared what he learned so that others could go further. Three centuries later, those foundations helped power the modern world.…