{"id":2504890,"url":"https://alion.io/job/toast-senior-software-engineer-application-infrastructure","title":"Senior Software Engineer, Application Infrastructure","company":{"id":13243,"name":"Toast","domain":"toasttab.com","url":"https://alion.io/company/toasttab","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":75,"open_postings":92,"ghost_share":0,"stale_share":0.989,"repost_share":0,"time_to_fill_p50_days":27,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Dublin, Ireland"],"countries":["IE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":109000,"max_usd":230000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":35},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Java","optional":false},{"name":"Kotlin","optional":false},{"name":"Apache Pulsar","optional":true},{"name":"AWS","optional":true},{"name":"DynamoDB","optional":true},{"name":"PostgreSQL","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2026-10-06T16:25:46Z","employer_posted_date":"2026-10-06","last_verified_at":"2026-10-17T08:12:09Z","board_verified":true,"closed_at":null,"days_open":10,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":10},"description":"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. \nAre you ready for a change?\nWe 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.\nAbout thisroll * (Responsibilities) \nArchitect, design, and deliver ultra-reliable, high-performance services and infrastructure used by millions\nUncover and resolve performance bottlenecks across infrastructure, databases, and APIs\nDefine and enable adherence to engineering best practices, coding standards, and architectural guidelines\nCollaborate closely with the Product team to influence features, technical direction, and long-term product vision\nDo you have the right ingredients?\nHands-on experience building and operating complex, mission-critical, large-scale distributed systems in the Cloud\nExpertise in asynchronous messaging, event-driven architecture, APIs, and integration patterns\nTrack record of delivering clean, maintainable, and resilient code that stands the test of time\nProficiency in Java or Kotlin preferred (experience in other modern programming languages also valued)\nExceptional communication and collaboration skills, with demonstrated ability to align and inspire cross-functional teams\nA demonstrated record of mentoring junior team members and enhancing the team's effectiveness\nTech Stack\nOur 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.\nWe embrace AI-driven software development at Toast across the lifecycle from design and implementation to testing and production monitoring.\nHow Toast Uses AI in its Hiring Process\nThroughout 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\nOur Approach to Hybrid Working\nWe 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\nPeople Are the Secret Ingredient in Our Recipe for Success\nAt 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.\nApply today!\nToast 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 .\n------\nFor 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. 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