Principal Software Engineer, Data Platform

Requirements

• 8+ years in software engineering with meaningful experience in data platform or distributed systems
• Deep expertise in Apache Spark and Apache Iceberg, not just operational familiarity
• Strong background in streaming infrastructure (Apache Kafka, Apache Pulsar, or similar) and cloud-native data platforms on AWS
• Experience designing internal platforms and developer-facing abstractions - you think about your platform's users as carefully as product engineers think about end users
• Demonstrated ability to drive technical alignment across multi-team environments, including the communication work that makes architectural changes actually stick
• Databricks experience is a bonus but we care more that you understand what's running underneath it

What you'll be doing

• Work hands-on with Spark, Iceberg, and our streaming infrastructure - diagnosing performance, reasoning through architectural decisions, and building systems that other teams depend on at scale
• Contribute to technical strategy for data platform initiatives alongside other senior engineers and technical leads, translating complex problems into clear direction and executable plans
• Design and evolve the platform's API surfaces so that engineers across Toast can self-service - adoption and ease-of-use are part of the job
• Influence adjacent teams and align stakeholders across engineering, product, and leadership on architectural decisions
• Mentor engineers on the team and raise the bar on engineering practices across the organisation
• Use AI tooling as a genuine force multiplier in your day-to-day work and help the team do the same

Perks and Benefits

• Hybrid role based in Dublin, Ireland with EU relocation supported
• Opportunity to work with cutting-edge technologies in a fast-growing business environment
• Collaboration with senior engineers, technical leads, and other teams to drive platform transformation
• Mentorship opportunities and the chance to influence engineering practices company-wide