Senior Software Engineer, Application Infrastructure
Toast is hiring a Senior Software Engineer, Application Infrastructure in Dublin, Ireland. Level rates it ; you can apply on Toast.
Level's read on this job
- Little AI ●○○○ is how Level rates this software engineer role: aI is not part of the work.
- Tools and skills the posting cites include Java, Kotlin and Go.
- Level classifies it as a senior role.
- Level lists 339 other open roles at Toast.
AI in this role
Design and scale cloud infrastructure, distributed systems, and backend services for a restaurant platform.
Now, more than ever, the Toast team is committed to our customers. We’re taking steps to help restaurants navigate these unprecedented times with technology, resources, and community. Our focus is on building the restaurant platform that helps restaurants adapt, take control, and get back to what they do best: building the businesses they love. And because our technology is purpose-built for restaurants, by restaurant people, restaurants can trust that we’ll deliver on their needs for today while investing in experiences that will power their restaurant in the future.
Are you ready for a change?
We are looking for an experienced software engineer to play a critical role in further scaling and developing Toast’s cloud platform and infrastructure. Toast’s platform processes billions of requests per day from hundreds of internal services and hundreds of thousands of mobile devices; these numbers grow exponentially year over year as we add new restaurants and capabilities to the platform. Our team is responsible for developing secure, observable, highly available, large-scale shared services and infrastructure.
About this roll* (Responsibilities)
- Architect, design, and deliver ultra-reliable, high-performance services and infrastructure used by millions
- Uncover and resolve performance bottlenecks across infrastructure, databases, and APIs
- Define and enable adherence to engineering best practices, coding standards, and architectural guidelines
- Collaborate closely with the Product team to influence features, technical direction, and long-term product vision
Do you have the right ingredients?
- Hands-on experience building and operating complex, mission-critical, large-scale distributed systems in the Cloud
- Expertise in asynchronous messaging, event-driven architecture, APIs, and integration patterns
- Track record of delivering clean, maintainable, and resilient code that stands the test of time
- Proficiency in Java or Kotlin preferred (experience in other modern programming languages also valued)
- Exceptional communication and collaboration skills, with demonstrated ability to align and inspire cross-functional teams
- A demonstrated record of mentoring junior team members and enhancing the team's effectiveness
Tech Stack
Our team builds and operates on a modern, cloud-native stack with heavy use of AWS, developing services and shared libraries in Kotlin and Go backed by PostgreSQL and DynamoDB. Infrastructure is provisioned and managed with Terraform. We oversee Toast’s sharded PostgreSQL databases, own and drive the organization’s use of Apache Pulsar to enable event-driven architecture at scale, and provide developers with tools and services to easily schedule recurring jobs. Our systems also power customer engagement, integrating with SMS and email providers to reliably deliver millions of messages per day.
We embrace AI-driven software development at Toast across the lifecycle from design and implementation to testing and production monitoring.
How 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. We ask that you complete interviews and assessments on your own, without real-time AI tools, recording, or transcription bots, unless we tell you otherwise in advance. To learn more: https://careers.toasttab.com/ai-in-hiring
Our Approach to Hybrid Working
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 hospitality community, regardless of location. Please visit the Locations page on our career site to learn more about our in-office expectations by region: https://careers.toasttab.com/locations-toast
People Are the Secret Ingredient in Our Recipe for Success
At Toast, our employees are our secret ingredient—when they thrive, we thrive. The restaurant industry brings together people with a wide range of backgrounds, experiences, and perspectives, and we value that same breadth at Toast. We strive to build a culture grounded in authenticity, respect, and humility, where every Toaster has a real opportunity to grow, contribute, and do their best work—raising the bar in delivering exceptional experiences for our customers and each other.
Apply 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 candidateaccommodations@toasttab.com.
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How we rate this
Senior Software Engineer, Application Infrastructure at Toast rates 0 out of 100 for how much of the daily work is AI. That makes it Little AI (AI Level 1 of 4). The level is about AI in the job, not seniority.
Little AI. AI is not part of the work.
- ●●●● Builds AI80 to 100
- ●●●○ Works on AI60 to 79
- ●●○○ Uses AI40 to 59
- ●○○○ Little AI0 to 39
Levels come from how often the tools, models and workflows of the role are named in the posting itself. Read the description and count the AI tools, models and workflows it names.
Prepare for this job
Built from this posting and from similar jobs on Level.
Skills and AI tools this role asks for
Also common in software engineer jobs at this level
Pay
- Typical software engineer job
- $167k
This posting doesn't list pay. Use the typical software engineer figure when pay comes up. See software engineer jobs
Questions you could be asked
- Tell me about a project where distributed systems was part of your work. What did you do?
- Tell me about a project where cloud infrastructure was part of your work. What did you do?
- Tell me about a project where backend engineering was part of your work. What did you do?
- What's a project where you used Java hands-on?
- Walk me through how you've used Kotlin in your day-to-day work.
Adapt your resume
- List these exact terms on your resume: Distributed Systems, Cloud Infrastructure, Backend Engineering, Java, and Kotlin. An applicant tracking system matches the wording, not the idea.
- Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.
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