{"id":953582,"url":"https://alion.io/job/fieldguide-senior-software-engineer-agents-foundation-agents","title":"Senior Software Engineer, Agents (Foundation Agents)","company":{"id":4121,"name":"Fieldguide","domain":"fieldguide.io","url":"https://alion.io/company/fieldguide","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":85,"open_postings":15,"ghost_share":0,"stale_share":0.4,"repost_share":0,"time_to_fill_p50_days":64,"computed_at":"2026-11-02T06:13:15Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":225000,"max":250000,"currency":"USD","period":"year","gross":null,"usd_annual":250000},"salary_estimate":null,"experience_years_min":1,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Platform Engineering","optional":true}],"status":"live","first_seen_at":"2026-09-16T01:39:05Z","employer_posted_date":"2026-09-16","last_verified_at":"2026-11-02T13:59:48Z","board_verified":true,"closed_at":null,"days_open":47,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":47},"description":"About Us\nFieldguide is establishing a new state of trust for global commerce and capital markets by automating and streamlining the work of assurance and audit practitioners-specifically in cybersecurity, privacy, and financial audits. We build software for the people who enable trust between businesses.\nWe're based in San Francisco, CA, and backed by Goldman Sachs Alternatives, Bessemer Venture Partners, 8VC, Floodgate, Y Combinator, and more. Over 50 of the top 100 accounting and consulting firms trust Fieldguide to power mission-critical work.\nAbout the Role\nThe Foundation Agents team stewards the long-horizon agents powering the Fieldguide AI platform. We work at the frontier of AI product development: agent knowledge, evaluations, and improving quality and reliability at scale. As a Senior Software Engineer, Agents, you'll take ownership of how the team measures and improves agent quality, and help drive the platform forward.\nWhat You’ll Own\nEvals strategy and error-analysis practice, shaping how the team measures and improves agent quality\n\nDesign and build agent knowledge and evaluation infrastructure for Fieldguide's long-horizon agents\n\nLead error analysis on agent behavior, turning findings into concrete platform-level reliability improvements\n\nBuild and harden backend systems that support agent execution, evaluation, and monitoring at scale\n\nDrive the AI platform's reliability and quality roadmap forward, working closely with the broader AI team\n\nMentor engineers on the team, raising the bar on eval rigor and error-analysis practice\n\nWho You Are\nYou've built AI products end-to-end, with real ownership over agent quality outcomes\n\nYou think in evals and error analysis as a discipline; you dig into why an agent failed and fix the systemic cause\n\nYou're strong in the backend and comfortable owning platform-level systems\n\nYou're motivated by long-horizon agents that do real work in production\n\nYou multiply the people around you, not just your own output\n\nExperience\nMust-have:\n1+ years working specifically on agents\n\nStrong experience working on an AI platform\n\nDemonstrated experience building evals and performing error analysis\n\nBackend engineering experience\n\nNice-to-have:\nStrong platform engineering skills\n\nFrontend experience\n\nDistributed systems experience\n\nWhat Should Excite You\nLong-horizon agents: Working on agents that do real, sustained work\n\nEvaluation as a craft: Evals and error analysis are core to how this team improves quality, not an afterthought\n\nPlatform-level impact: Your work shapes the reliability and quality of every agent built on top of it\n\nFrontier problems: You're working on open problems in agent reliability that don't have established playbooks yet\n\nBenefits\nCompetitive compensation with equity\n\nComprehensive health and wellness benefits\n\nFlexible time off and work schedules\n\nTechnology reimbursements\n\n401(k) plan\n\nTwice-yearly in-person offsites across the U.S.\n\nWellness benefits starting on your first day\n\nOur Values\nFearless - Inspire and break down seemingly impossible walls\n\nFast - Launch fast with excellence; iterate to perfection\n\nLovable - Deliver happiness and 11-star experiences\n\nOwners - Execute and run the business with ownership\n\nWin-win - Create mutual value and earn trust for life\n\nInclusive - Scale the best ideas with inclusive teams","description_format":"text","description_chars":3343,"description_truncated":false,"requirements":{"experience_years_min":1,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Flexible time off"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Workflow & Process Automation (RPA, BPM)","Security Compliance"],"lifecycle":[{"event":"open","at":"2026-09-16T03:10:17Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 1","filings_12m":1,"filings_prev_12m":3,"green_card_filings_12m":0,"median_offered_wage_usd":212500,"route":null,"cap_exempt":false,"checked_at":"2026-10-29T16:27:21+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":1}],"liveness":{"score":66,"band":"ok","label":"Likely open","p_open":1,"p_active":0.874,"p_room":0.75,"age_days":47,"expected_fill_days":64,"reasons":["conf:0","velocity","win:late"],"computed_at":"2026-11-02T06:13:15Z"},"pay":{"stated_usd_annual":250000,"is_top_pay":true},"html_url":"https://alion.io/job/fieldguide-senior-software-engineer-agents-foundation-agents","json_url":"https://alion.io/job/fieldguide-senior-software-engineer-agents-foundation-agents.json","meta":{"generated_at":"2026-11-02T14:26:14Z","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":19889,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-03T00:00:00Z"}},"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":4121},"rest":"https://alion.io/mcp/rest/get_company?id=4121"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffieldguide-senior-software-engineer-agents-foundation-agents"},{"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%2Ffieldguide-senior-software-engineer-agents-foundation-agents"},{"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%2Ffieldguide-senior-software-engineer-agents-foundation-agents"},{"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/fieldguide-senior-software-engineer-agents-foundation-agents\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffieldguide-senior-software-engineer-agents-foundation-agents"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":953582}},{"tool":"search_jobs","arguments":{"company":"fieldguide.io","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":953582},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); 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