{"id":167359,"url":"https://alion.io/job/vertex-principal-ai-engineer","title":"Principal AI Engineer","company":{"id":58884,"name":"Vertex","domain":"vertexinc.com","url":"https://alion.io/company/vertexinc","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":null},"role":"AI/ML","role_family":"AI/ML","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":["United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":159600,"max":207500,"currency":"USD","period":"year","gross":null,"usd_annual":207500},"salary_estimate":null,"experience_years_min":12,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Agentic Workflows","optional":false},{"name":"AI Agents","optional":false},{"name":"Embeddings","optional":false},{"name":"Hybrid Search","optional":false},{"name":"LangGraph","optional":false},{"name":"LlamaIndex","optional":false},{"name":"LLM","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"RAG","optional":false},{"name":"Semantic Kernel","optional":false},{"name":"LangChain","optional":true}],"status":"live","first_seen_at":"2026-07-17T00:00:00Z","employer_posted_date":"2026-07-17","last_verified_at":"2026-10-17T09:11:05Z","board_verified":true,"closed_at":null,"days_open":92,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":92},"description":"Job Description:\nThe Principal Engineer, AI Orchestration & Retrieval defines how the enterprise's central AI system is composed - the orchestration and abstraction layers that connect LLMs to tools, data, and one another, and the retrieval systems that ground them. This role sets the strategy and builds the reality for how we build and expose tools (including MCP servers), how we structure retrieval and chunking, and when to rely on specialized sub-agents versus directly exposing tools to a model.\nEssential Job Functions and Responsibilities\nDesign the orchestration and abstraction layers of the central AI system that connect LLMs to tools, data, and sub-agents\n\nDesign, build, and operate MCP (Model Context Protocol) servers and set standards for how tools are defined, exposed, and versioned\n\nDefine tool-surface strategy: the optimal number of tools exposed to an LLM, the optimal number of APIs per MCP server, and how to keep tool surfaces coherent and discoverable\n\nEstablish when to use specialized sub-agents versus directly exposing tools to a model, and design the corresponding multi-agent patterns\n\nDesign retrieval (RAG) systems: chunking strategies, embedding models, vector stores, hybrid/keyword search, re-ranking, and context assembly\n\nDefine abstraction layers that decouple product teams from the underlying models, tools, and providers\n\nBuild routing, context-window management, and memory strategies for agentic workflows\n\nDefine evaluation for orchestration and retrieval quality (retrieval precision/recall, tool-selection accuracy, task success, latency, and cost)\n\nEstablish observability and tracing across multi-step agent and tool calls\n\nAddress safety, guardrails, authentication, and access control across tools and agents\n\nPartner with product teams to onboard their capabilities as tools and agents into the central AI system\n\nMentor engineers and raise orchestration and retrieval maturity across teams\n\nKnowledge, Skills, and Abilities\nDeep hands-on experience with LLM orchestration frameworks (e.g., LangGraph, LlamaIndex, Semantic Kernel, or equivalents) and agentic patterns\n\nDirect experience building MCP servers and tool/function-calling integrations\n\nEvidence-based opinions on the optimal number of tools to expose to an LLM and the optimal number of APIs per MCP server, and on overall tool-surface design\n\nA clear, defensible point of view on specialized sub-agents versus direct tool exposure, and the tradeoffs of each\n\nDeep experience with retrieval/RAG: chunking strategies, embeddings, vector databases, hybrid search, and re-ranking\n\nExperience designing abstraction layers and platform APIs that many teams build on top of\n\nStrong understanding of context-window management, prompt/context assembly, and cost/latency optimization\n\nExperience with evaluation and observability for agentic and retrieval systems\n\nAbility to set strategy and standards while remaining hands-on in code\n\nStrong stakeholder collaboration and problem-solving skills\n\nEducation and Experience\nBachelor’s degree in Computer Science, Engineering, or related discipline; advanced degree preferred\n\n12 or more years of experience in software/AI engineering, with hands-on experience building LLM orchestration, agents, and retrieval systems\n\nDisclaimer\nThe above statements describe the general nature and level of work performed in this role. Other duties may be assigned.\nVertex Values: Together We Win\nWe're building a team of people who are passionate about making an impact for our customers and committed to how that impact is achieved. Our values define the behaviors, mindset, and culture that make Vertex a great place to grow and do meaningful work.\nPlay to Win or We Don't Play - If we choose to do something, we're choosing to do it because we plan to win. That mindset raises our bar on product quality, customer outcomes, and how we show up for one another.\nWork As a Team, Putting the Customer At the Core - Our customers are our true north. Whatever your role, ask: how will this help a customer succeed today? We earn trust through outcomes, not promises.\nAchieve Excellence With Integrity, Speed, and Agility - The market isn't slowing down. We'll move faster, adapt quickly, and never compromise on doing things the right way - for teammates, customers, and partners.\nInnovate Boldly With a Growth Mindset - Progress demands smart risk. We'll try new approaches, learn fast, and keep pushing the boundaries - especially where AI can remove friction and unlock value.\nCommunicate with Care, Candor and Transparency - Honest, constructive conversations make us better. Let's speak plainly about what's working and what isn't and help each other improve.\n Pay Transparency Statement:\nUS Base Salary Range: $159,600.00 - $207,500.00Base pay offered to new hires may vary based upon factors including relevant industry and job-related skills and experience, geographic location, and business needs.* The range displayed does not encompass the full potential of the role, which allows for further growth and career progression.\nIn addition, as a part of our total compensation package, this role may be eligible for the Vertex Bonus Plan (VOB), a role-specific sales commission/bonus, and/or equity grants.\nLearn more about Life at Vertex and connect with your recruiter for more details regarding Vertex's compensation and benefit programs.\n*In no case will your pay fall below applicable local minimum wage requirements.","description_format":"text","description_chars":5470,"description_truncated":false,"requirements":{"experience_years_min":12,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Accounting & Tax Software"],"lifecycle":[{"event":"open","at":"2026-07-17T00:00:00Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 17","filings_12m":17,"filings_prev_12m":32,"green_card_filings_12m":0,"median_offered_wage_usd":122500,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":14}],"liveness":{"score":15,"band":"cold","label":"Long shot","p_open":1,"p_active":0.552,"p_room":0.28,"age_days":92,"expected_fill_days":35,"reasons":["conf:0","velocity","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":207500,"is_top_pay":false},"html_url":"https://alion.io/job/vertex-principal-ai-engineer","json_url":"https://alion.io/job/vertex-principal-ai-engineer.json","meta":{"generated_at":"2026-10-17T14:10:55Z","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":19092,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":58884},"rest":"https://alion.io/mcp/rest/get_company?id=58884"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fvertex-principal-ai-engineer"},{"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%2Fvertex-principal-ai-engineer"},{"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%2Fvertex-principal-ai-engineer"},{"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/vertex-principal-ai-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fvertex-principal-ai-engineer"}]}