{"id":3758522,"url":"https://alion.io/job/host-analytics-inc-principal-architect","title":"Principal Architect","company":{"id":97060,"name":"Host Analytics Inc","domain":"planful.com","url":"https://alion.io/company/host-analytics-inc","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Welcome to the Jungle","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_company_offices","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":{"min":325000,"max":375000,"currency":"USD","period":"year","gross":null,"usd_annual":375000},"salary_estimate":null,"experience_years_min":15,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ClickHouse","optional":false},{"name":"DuckDB","optional":false},{"name":"Java","optional":false},{"name":"Micronaut","optional":false},{"name":"Redis","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":false},{"name":"Wi-Fi","optional":false}],"status":"live","first_seen_at":"2026-11-01T12:15:11Z","employer_posted_date":null,"last_verified_at":"2026-11-01T12:15:11Z","board_verified":false,"closed_at":null,"days_open":6,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":6},"description":"About the RoleAs a Principal Engineer, you will be responsible for the architectural design and end-to-end implementation of a high-performance OLAP query engine and semantic layer. The primary goal is to develop a custom JSON-based query language (DSL) and a translation engine that converts these requests into optimized SQL for columnar databases. This role requires a deep understanding of systems programming, compiler theory, and multi-dimensional data modeling to serve high-concurrency read loads in a microservices environment.\nWhat You'll Do\nArchitectural Design & Query Execution\nCompiler & DSL development: Design a custom JSON-based OLAP query language. Define eBNF grammars and build a translation layer to convert functional formulas and DSL requests into an optimized execution plan.\n\nSQL generation & optimization: Implement and oversee the generation of highly optimized SQL tailored for columnar databases including ClickHouse, SingleStore, and DuckDB.\n\nSemantic layer management: Architect the representation of multi-dimensional data models within columnar structures, ensuring efficient data retrieval and aggregation.\n\nCustom function logic: Implement logic for custom functions, determining the optimal balance between SQL push-down and application-layer execution\n\nCaching & Performance Engineering\nMulti-dimensional caching: Envisage and implement a distributed caching strategy for multidimensional data, utilizing shared memory systems like Redis.\n\nConcurrency & scaling: Build and maintain high-performance microservices using Java (Micronaut or Spring Boot) with Project Loom (Virtual Threads) to handle massive concurrent read loads.\n\nLow-level optimization: Manage system-level performance including connection pooling, array pooling, and off-heap memory management.\n\nJVM tuning: Apply expert knowledge of Java Garbage Collectors (including ZGC and Shenandoah) to maintain low-latency response times.\n\nEngineering Excellence & AI Integration\nAI-augmented development: Leverage AI coding agents and tools to accelerate the software development lifecycle, from prototyping to debugging.\n\nTechnical documentation: Maintain a disciplined approach to software development by documenting architectural decisions, design patterns, and technical specifications.\n\nTechnical leadership: Act as the primary technical authority on query engine internals, providing guidance on complex systems-level challenges.\n\nWhat We're Looking For\n15+ years in software engineering with a focus on backend systems and data infrastructure\n\nStrong theoretical and practical knowledge of compilers, ASTs, eBNF, and query planning\n\nIn-depth understanding of SQL, query optimization, and the internal workings of columnar databases\n\nExpert proficiency in Java, specifically regarding multi-threading, asynchronous I/O, networking, and memory management\n\nProven experience in designing distributed caching layers and managing state across microservices\n\nAbility to decompose complex data problems into scalable architectural components\n\nClear verbal and written communication skills, with a strong tendency to document thoughts and architectural ideas\n\nA rigorous approach to software craftsmanship, including testing, telemetry, and performance benchmarking\n\nMinimum of 1 year of experience using AI coding agents to enhance development productivity\n\nPrior experience developing financial systems such as ERP, EPM, or General Ledger platforms is an added plus\n\nWhy this RoleYou will own the internals of the query engine at the heart of a next-generation financial planning platform — the layer where compiler theory, columnar database performance, and multi-dimensional semantics converge.\nWhy Planful\nTo foster the best in class work we’re so proud of, we’ve created a best in class culture, including:\n2 Volunteer days per year, Birthday PTO, and quarterly company Wellness Days\n\n3 months supply of diapers and meal deliveries for the first month of your Maternity/Paternity leave and generous parental leave\n\nTalkspace access and mental health support\n\nAnnual company-wide gatherings held in cities like San Diego, Denver, Palm Springs, and Vegas!\n\nOffice hubs in San Francisco, Toronto, and London. We also offer benefits such as home office setup, and monthly wifi and cell phone reimbursements for all employees, in-office or remote.\n\nEmployee Resource Groups such as Women of Planful, Parents of Planful, and many more. We encourage our teammates to bring their authentic selves to the team, and have full support in creating new ERGs & communities along the way\n\nPay Transparency StatementAt Planful our top priority is to support our employees and ensure each individual has access to equal growth opportunities. Pay decisions take into consideration the individual's skillset, experience, knowledge, qualifications for the role, and specific work location. \nThe OTE range for this role is $325,000 - $375,000 USD per year, depending on experience and location. As a part of this role, you are also eligible for equity, benefits and wellbeing resources.\nOriginally posted on Himalayas","description_format":"text","description_chars":5096,"description_truncated":false,"requirements":{"experience_years_min":15,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Growth opportunities","Home office","Parental leave"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Accounting & Tax Software","Revenue & SaaS Metrics Analytics"],"lifecycle":[{"event":"open","at":"2026-11-04T17:28:30Z"}],"visa":[{"country":"US","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"H-1B filings in 12 months: 2","filings_12m":2,"filings_prev_12m":2,"green_card_filings_12m":0,"median_offered_wage_usd":202500,"route":null,"cap_exempt":false,"checked_at":"2026-11-07T07:57:00+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":0}],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":6,"expected_fill_days":29,"reasons":["seen:6","velocity","win:early"],"computed_at":"2026-11-08T05:47:12Z"},"pay":{"stated_usd_annual":375000,"is_top_pay":true},"html_url":"https://alion.io/job/host-analytics-inc-principal-architect","json_url":"https://alion.io/job/host-analytics-inc-principal-architect.json","meta":{"generated_at":"2026-11-08T10:14:42Z","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":22067,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-09T00:00:00Z"}},"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":97060},"rest":"https://alion.io/mcp/rest/get_company?id=97060"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fhost-analytics-inc-principal-architect"},{"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%2Fhost-analytics-inc-principal-architect"},{"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%2Fhost-analytics-inc-principal-architect"},{"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/host-analytics-inc-principal-architect\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fhost-analytics-inc-principal-architect"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3758522}},{"tool":"search_jobs","arguments":{"company":"planful.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3758522},"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); https://alion.io/mcp with an Alion account has everything. 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