Principal Software Engineer

Toast • POS Systems • Payment Processing & Gateways • Java • 5 days ago
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Salary
≈ $95k – $279k per year (Estimated)
Location
Hybrid (Ireland)
Seniority
Principal · 10+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 12, 2026. First seen by Alion on Aug 5, 2026.

Overview
Company
Impact
Profile match

Toast

Toast is a restaurant technology company headquartered in Boston, Massachusetts, and founded in 2011. The company sells an integrated point of sale platform combining payment processing, online ordering, kitchen display systems, payroll, and capital lending built specifically for food service operators. It serves well over a hundred thousand restaurant locations, mostly in the United States, and is listed on the New York Stock Exchange.
toasttab.com • HQ: Boston, United States • Payment Processing & Gateways • POS Systems • 1001-5000 employees • Est. 2011
Tech stack of Toast
Backed by Bessemer Venture Partners, GV, TCV

Join Toast, a leading FinTech company, as a Principal Software Engineer. In this role, you will lead the architectural design, technical execution, and implementation of AI agents and infrastructure for the Team area, which is critical for managing staff and optimizing labor in restaurants. You will define and execute the technical architecture for AI agents, collaborate with engineering and product managers, and mentor engineers within the Team area. Enjoy benefits such as unlimited vacation, professional development reimbursement, and comprehensive health coverage.

Missions

  • Lead the architectural design, technical execution, and implementation of AI agents and infrastructure for Toast's Team area within the FinTech line of business.
  • Define and execute the technical architecture for AI agents within the Team domain, ensuring systems are scalable, reliable, and secure.
  • Guide, mentor, and elevate engineers within the Team area, fostering a culture of technical excellence and continuous learning.

Profil recherché

- Balanced expertise: Ability to design high-level technical solutions on a whiteboard while remaining deeply connected to code-level execution and system performance

- Proven track record of leading complex technical initiatives and delivering robust software architecture from design to production

- Strong enthusiasm for agentic development practices, LLM integration, and modern software paradigms

- 10+ years of experience designing, building, and operating highly scalable, mission-critical distributed systems and SaaS products (ideally AWS-hosted)

- Effective communication: Ability to articulate complex technical ideas clearly to both technical peers and product leadership

- Experience building systems that leverage LLMs, autonomous agents, or ML models

- Hands-on experience with enterprise integration frameworks (e.g., Apache Camel) or event-driven messaging systems (e.g., Apache Pulsar)

- Experience establishing robust CI/CD, testing, and deployment strategies for complex systems

- Domain knowledge in workforce management or restaurant operations

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