{"id":2010166,"url":"https://alion.io/job/toast-principal-software-engineer-4","title":"Principal Software Engineer","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":"Welcome to the Jungle","truth_index":{"grade":"B","score":83,"open_postings":3,"ghost_share":0,"stale_share":0.667,"repost_share":0,"time_to_fill_p50_days":35,"computed_at":"2026-10-12T06:55:09Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Ireland"],"countries":["IE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":95000,"max_usd":281000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":1790},"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Apache Camel","optional":false},{"name":"Apache Pulsar","optional":false},{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"LLM","optional":false},{"name":"Java","optional":true}],"status":"live","first_seen_at":"2026-08-05T00:13:37Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-12T06:32:46Z","board_verified":true,"closed_at":null,"days_open":68,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":68},"description":"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.\nMissions\nLead the architectural design, technical execution, and implementation of AI agents and infrastructure for Toast's Team area within the FinTech line of business.\nDefine and execute the technical architecture for AI agents within the Team domain, ensuring systems are scalable, reliable, and secure.\nGuide, mentor, and elevate engineers within the Team area, fostering a culture of technical excellence and continuous learning.\nProfil recherché\n - 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\n- Strong enthusiasm for agentic development practices, LLM integration, and modern software paradigms\n- 10+ years of experience designing, building, and operating highly scalable, mission-critical distributed systems and SaaS products (ideally AWS-hosted)\n- Effective communication: Ability to articulate complex technical ideas clearly to both technical peers and product leadership\n- Experience building systems that leverage LLMs, autonomous agents, or ML models\n- Hands-on experience with enterprise integration frameworks (e.g., Apache Camel) or event-driven messaging systems (e.g., Apache Pulsar)\n- Experience establishing robust CI/CD, testing, and deployment strategies for complex systems\n- Domain knowledge in workforce management or restaurant operations","description_format":"text","description_chars":2093,"description_truncated":false,"requirements":{"experience_years_min":10,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Continuous learning","Professional development"],"hiring_locations":[{"name":"Ireland","iso":"IE","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["POS Systems","Payment Processing & Gateways"],"lifecycle":[{"event":"open","at":"2026-10-07T13:01:06Z"}],"visa":[],"liveness":{"score":23,"band":"cold","label":"Long shot","p_open":1,"p_active":0.641,"p_room":0.36,"age_days":68,"expected_fill_days":35,"reasons":["conf:0","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-12T06:55:09Z"},"pay":null,"html_url":"https://alion.io/job/toast-principal-software-engineer-4","json_url":"https://alion.io/job/toast-principal-software-engineer-4.json","meta":{"generated_at":"2026-10-12T10:49:16Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":16740,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":13243},"rest":"https://alion.io/mcp/rest/get_company?id=13243"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ftoast-principal-software-engineer-4"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Ftoast-principal-software-engineer-4"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Ftoast-principal-software-engineer-4"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/toast-principal-software-engineer-4\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ftoast-principal-software-engineer-4"}]}