Senior Software Engineer AI Foundations

Toast creates technology to help restaurants and local businesses succeed in a digital world helping business owners operate increase sales engage customers and keep employees happy. Because our technology is purpose-built for restaurants by restaurant people - and increasingly shaped by AI in both what we build and how we build - restaurants can trust that well deliver on their needs for today while investing in the experiences that will power their restaurant of the future.

AI Foundations is Toasts internal platform team for AI. We build the infrastructure governance and developer tooling that makes AI a reliable scalable force multiplier across the entire product development lifecycle. Our products include the LLM Proxy AI Key Management Observability pipelines the Claude Plugin Marketplace and autonomous agents that participate directly in the software development lifecycle.

As a Senior Software Engineer on this team youll be hands-on building full-stack across the systems other Toast engineers depend on every day: the LLM proxy agentic workflows and the plugin marketplace that brings AI-native development practices to teams across the company.

A day in the life (Responsibilities)

• Design build and ship features across AI platform infrastructure including the LLM proxy AI key management and observability pipelines
• Develop and extend autonomous agents that participate in the SDLC such as the AI Review GitHub App and Developer Platform MCP integrations
• Build on and contribute to the internal plugin marketplace developing plugins that encode Toasts architectural standards and quality practices into AI assistant behavior
• Implement MCP (Model Context Protocol) services and service templates that make it faster and easier for teams across Toast to build AI-powered workflows
• Contribute full-stack across backend services and frontend or developer-facing interfaces as needed
• Write high-quality well-tested code and participate in design and code reviews
• Partner closely with product management to shape feature requirements contribute to roadmap discussions and translate product vision into reliable technical solutions

What youll need to thrive (Requirements)

• 5 years of experience designing and implementing scalable software systems with a full-stack background spanning backend services and frontend or developer-facing interfaces
• Demonstrated experience building deploying or operating LLM-powered agents or AI-assisted developer tooling
• Familiarity with AI coding assistants (e.g. Claude Code Cursor GitHub Copilot) and an interest in extending them through custom plugins skills or hooks
• Experience with MCP (Model Context Protocol) tool use patterns or agentic frameworks
• Working knowledge of prompt engineering and how LLM behavior responds to context and instructions
• Strong foundation in modern backend (Java Kotlin or similar) and frontend (TypeScript React or similar) technologies
• Experience with distributed systems REST APIs and cloud-native infrastructure
• Strong customer empathy and a drive to make developers lives better through reliable well-designed platform solutions

What will make you stand out

• Familiarity with A2A (Agent-to-Agent) protocols and multi-agent orchestration patterns
• Experience with machine learning concepts model evaluation or ML infrastructure
• Experience building developer experience platforms internal tooling or API gateways
• Familiarity with observability tooling for AI/LLM systems (e.g. Langfuse DataDog)

AI at Toast

At Toast one of our company values is that were hungry to build and learn. We believe learning new AI tools empowers us to build for our customers faster more independently and with higher quality. We provide these tools across all disciplines from Engineering and Product to Sales and Support and are inspired by how our Toasters are already driving real value with them. The people who thrive here are those who embrace changes that let us build more for our customers; its a core part of our culture.

Our Total Rewards Philosophy
We strive to provide competitive compensation and benefits programs that help to attract retain and motivate the best and brightest people in our industry. Our total rewards package goes beyond great earnings potential and provides the means to a healthy lifestyle with the flexibility to meet Toasters changing needs. Learn more about our benefits at Toast Uses AI in its Hiring Process

Throughout the hiring process our goal is to get to know you. We use AI tools to support our recruiters and interviewers with tasks like note-taking summarization and documentation of interviews to ensure they can be fully focused on your conversation. All hiring decisions are made by people. To learn more: Equity and Inclusion is Baked into our Recipe for Success

At Toast our employees are our secret ingredientwhen they thrive we restaurant industry is one of the most diverse and we embrace that diversity with authenticity inclusivity respect and humility. By embedding these principles into our culture and design we create equitable opportunities for all and raise the bar in delivering exceptional experiences.

We Thrive Together

We embrace a hybrid work model that fosters in-person collaboration while valuing individual needs. Our goal is to build a strong culture of connection as we work together to empower the restaurant community. To learn more about how we work globally and regionally check out: today!

Toast is committed to creating an accessible and inclusive hiring process. As part of this commitment we strive to provide reasonable accommodations for persons with disabilities to enable them to access the hiring process. If you need an accommodation to access the job application or interview process please contact .

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