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Senior principal software engineer, ai team agent

Dublin
Toast
Principal software engineer
Posted: 30 April
Offer description

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.
Your mission is to drive architecture, technical strategy, and implementation of AI agents for Toast's Team area which is part of the Fintech line of business. You will be one of the most senior technologists in the line of business. The Team area is mission‑critical, managing staff and optimizing labor for our restaurants. Beyond agent development, you will influence how software is built across Toast through adoption of bleeding‑edge spec‑driven development and other paradigms.
A Day In The Life (Responsibilities)

Develop and drive an architectural vision to support the ambitious goals for agents and agent development
Be an active participant and authoritative technical voice in FinTech product strategy discussions
Partner with the Team Management Director of Engineering and Sr. Director of Product to successfully deliver Team agent products from design to production
Work closely with other Senior Principal Engineers to further the agent patterns and ecosystem across Toast as a whole
Evolve more efficient ways of working through agents and spread them across Toast
Work directly with the product manager for the Team Agent space, collaborating to drive vision
Be hands‑on and actively participate in development on the Team Agent
Mentor and develop technical leadership across Team and Fintech

What You'll Need To Thrive (Requirements)

15+ years of experience designing and building highly scalable, mission‑critical distributed and full‑stack software systems
10+ years of experience building and operating SaaS products, ideally AWS hosted
1+ years of experience using the latest in coding agents
A strong desire to lean all in on agentic development practices
Passion for building autonomous agents
Demonstrated ability to drive technical architecture for a company or highly scalable line of products
A desire to work not only with technologists but also product owners and business leaders
Ability and desire to draw big lines and boxes on a whiteboard paired with the ability to dig into the code under load
Ability and desire to communicate and influence at the executive level

What will help you stand out (Nonessential Skills/Nice to Haves)

Experience designing agentic products
Experience building systems that leverage LLMs and other ML models
Experience with enterprise integration using Apache Camel
Experience architecting event‑driven distributed systems using Apache Pulsar
Experience defining test, build and deploy strategies
Solid understanding of workforce management
Solid understanding of restaurant operations

This is a hybrid role requiring in‑office collaboration two days per week in our Dublin office.
For roles in the United States, it is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
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