Senior AI Platform Engineer — LLM Proxy & AI Agents

Toast; Dublin; Hybrid; EUR 90,000 - 140,000; Full time

Benefits offered by this job

Hybrid work arrangement

Accommodations available

Job summary

Toast is seeking a Senior Software Engineer for the AI Pod team. You will architect and deliver backend AI platform features including the LLM proxy, AI key management, and observability pipelines, while building autonomous agents that participate in the software development lifecycle across Toast.

You will collaborate with engineers, product managers, and platform teams to translate developer needs into reliable platform solutions and contribute to agentic development tooling and best practices.

Qualifications

• Bachelor’s degree with 5+ years designing scalable backend services.
• Experience building or operating LLM-powered agents or AI tooling.
• Familiarity with Claude Code, Cursor, GitHub Copilot and custom plugins/ hooks.

Responsibilities

• Design, build, and ship AI platform features (LLM proxy, key management, observability).
• Develop autonomous agents and SDLC integrations (AI Review GitHub App, MCP integrations).
• Contribute to internal plugin marketplace and encode architectural standards into AI behavior.
• Implement MCP services and templates to accelerate AI-powered workflows.

Skills

Backend design

LLM-powered agents

Distributed systems

REST APIs

Cloud-native

Prompt engineering

Java/Kotlin

Education

Bachelor’s Degree in Computer Science or related field

Tools

MCP (Model Context Protocol)

Claude Code

Cursor

GitHub Copilot

Langfuse

DataDog

Job description

Toast is seeking a Senior Software Engineer for the AI Pod team. You will architect and deliver backend AI platform features including the LLM proxy, AI key management, and observability pipelines, while building autonomous agents that participate in the software development lifecycle across Toast.

You will collaborate with engineers, product managers, and platform teams to translate developer needs into reliable platform solutions and contribute to agentic development tooling and best practices.