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Senior Software Engineer

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Senior Software Engineer in Others

  • Toast, Inc.
  • Full time
  • Email
  • Dublin, Ireland

Responsibilities

  • Design, build, and ship AI platform infrastructure such as the LLM proxy, AI key management, and observability pipelines.
  • Develop autonomous agents and developer tooling integrations, including GitHub applications and MCP integrations.
  • Build and extend the internal plugin marketplace and create plugins that encode architectural and quality standards into AI assistant behavior.
  • Implement MCP services and service templates for AI-powered workflows.
  • Write well-tested code and participate in design and code reviews.
  • Collaborate with engineering, product management, and platform teams to translate developer needs into reliable platform solutions.
  • Contribute to adoption of agentic development practices and use AI tools to improve development workflows.

Requirements

  • Bachelor’s degree with 5+ years of relevant experience designing and implementing scalable backend services.
  • Experience building, deploying, or operating LLM-powered agents or AI-assisted developer tooling.
  • Familiarity with AI coding assistants such as Claude Code, Cursor, and GitHub Copilot, including extending them through plugins, skills, or hooks.
  • Experience with MCP, tool-use patterns, or similar agentic integration frameworks.
  • Working knowledge of prompt engineering and LLM behavior in response to context and instructions.
  • Strong foundation in Java, Kotlin, or another object-oriented language.
  • Experience with distributed systems, REST APIs, and cloud-native infrastructure.
  • Strong customer empathy and a focus on reliable developer platform solutions.
  • Preferred experience with A2A protocols, multi-agent orchestration, machine learning concepts, model evaluation, ML infrastructure, developer experience platforms, internal tooling, API gateways, and AI/LLM observability tooling such as Langfuse and DataDog.

Benefits

  • Hybrid work arrangement requiring in-office presence two days per week.
  • Toast offers competitive compensation and benefits, including programs supporting employees’ health, lifestyle, and flexibility.
  • Accessible and inclusive hiring process with reasonable accommodations available.

Salary: Competitive

Toast, Inc.

Bottom Line – Solving business problems and generating positive growth is our jam! We are focused on helping purpose-driven brands make a positive impact with predictable Inbound Growth Programs. As a small business, we get it. Growing pains are genuine for many companies in today’s evolving digi...

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