{"id":137469,"url":"https://alion.io/job/boldvoice-senior-data-scientist-nyc","title":"Senior Data Scientist (NYC)","company":{"id":543,"name":"BoldVoice","domain":"boldvoice.com","url":"https://alion.io/company/boldvoice","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Work at a Startup","truth_index":null},"role":"Data Science","role_family":"Data Science","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":140000,"max":220000,"currency":"USD","period":"year","gross":null,"usd_annual":220000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"A/B Testing","optional":false},{"name":"Claude Code","optional":false},{"name":"Cursor","optional":false},{"name":"LLM","optional":false},{"name":"Mixpanel","optional":false},{"name":"OpenAI Codex","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"Scikit-learn","optional":false},{"name":"SQL","optional":false},{"name":"Statsmodels","optional":false}],"status":"live","first_seen_at":"2026-08-27T16:14:18Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-10-18T01:51:43Z","board_verified":true,"closed_at":null,"days_open":51,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":51},"description":"About BoldVoice\nBoldVoice (YC S21) is an AI-powered communication coach that helps non-native English speakers improve their pronunciation, clarity, and confidence. The app combines video lessons from Hollywood accent coaches with instant AI feedback as you speak, powered by our proprietary speech models. It has been downloaded by 5M+ users globally, is one of the top Education apps on the App Store, and has been featured in Forbes, TechCrunch, Wired, and Business Insider.\nWe recently raised a $21M Series A led by Matrix Partners, with Flybridge, XFund, and Y Combinator. We're a small, fast-moving team with a mission to help 1 billion people speak English clearly and advance their careers.\nAbout the Role\nWe're looking for our first Data Scientist to own how BoldVoice measures itself and decides what to build next.\nThis is not a reporting role. You will be the person who decides what \"working\" means for a feature, designs the experiment that tests it, calls the result honestly, and then digs into the data to find the next thing worth building. You'll sit at the intersection of product, growth, and our speech ML team, and your analyses will directly change the roadmap.\nThere is a large, unusually rich dataset waiting for you: many users, tens of millions of scored speech attempts, 100+ native language backgrounds, and a full consumer subscription funnel.\nWhat you'll do\nOwn experimentation end to end: help design A/B tests, choose the metrics up front, run the analysis with proper statistical rigor, and make the call on what ships\nBuild and own the metric layer the whole company runs on: activation, trial start, trial to paid conversion, retention curves, LTV, and learning outcomes\nRun the deep dives that change the roadmap. Why do speakers of one native language retain twice as well as another? Which lessons actually move pronunciation scores? What separates a user who sticks around from one who churns in week one?\nTurn behavioral and speech-scoring data into models the product uses: churn and conversion propensity, lesson recommendation, and personalization of the learning path\nPartner with growth on paid acquisition measurement: CAC by channel and creative, payback, incrementality, and where the next marketing dollar should go\nWork with the ML team to measure model quality in the wild, including how our speech models perform across accents and whether a model change actually improved user outcomes\nMake data self-serve, so a PM, designer, or engineer can answer their own question without waiting on you\nWho you are\nYou take a question from \"we don't know why this is happening\" all the way to a recommendation the team acts on that week\nYou have strong statistical judgment. You know when a result is real, when it is noise, and you say so plainly even when the answer is inconvenient\nYou care about the product, not just the analysis. Your goal is to change what ships, not to produce a spreadsheet or deck\nYou want to work fast, you want to not get interrupted by meetings, and you want to not need to ask for permission to do things\nRequirements\nAt least 5 years in data science or product analytics, ideally at a consumer subscription app or a fast-moving startup\nDeep experimentation experience: power analysis, variance reduction techniques like CUPED, handling multiple comparisons, and recognizing when a clean A/B test isn't possible\nStrong SQL and Python (pandas, scikit-learn, statsmodels or equivalent). You have worked directly against a production database, not only through a BI tool\nFluency with the consumer subscription funnel: install to trial to paid, cohort retention, LTV, and paid acquisition measurement\nExperience with product analytics and experimentation tooling. We use Mixpanel and GrowthBook on top of PostgreSQL\nUp to date with latest developments in using LLM tools like Claude Code, Cursor, Codex or similar to rapidly prototype and ship code quickly\nWe work out of our office in downtown NYC, and want our team to be in person at least 3x a week\nNice to have: causal inference beyond A/B testing, exposure to speech or audio ML evaluation, or experience measuring learning outcomes in education products\nWhat success looks like in 3 months\nThe team trusts one shared definition of our core metrics, and you own it\nExperiment velocity is up and experiment quality is higher, because you set the bar for how we read results\nYou have found at least one non-obvious insight about our users that changed what we build\nYou are the person people come to before deciding whether a feature worked\nWhat we offer\nYou will be compensated in salary and generous stock options, so you feel like an integral part of the success and growth of the company\nBenefits include excellent fully paid health/vision/dental insurance and a 401K program\nWe're an in-person team and we work out of our office in downtown Manhattan in NYC. If you're not in NYC, we would like to help you move here and can help with your relocation\nA+ team: join a small and mighty team where your work has immediate impact\nAccess to exclusive startup events, conferences and networks\nHow to Apply:\nReach out here or email us at engineering [at] boldvoice [dot] com to start the conversation. Include a short note about an analysis you ran that changed a product decision, and what you'd want to look at first at BoldVoice.","description_format":"text","description_chars":5355,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Proficiency (C2)","optional":false}]},"benefits":["401k plan","Dental insurance","Stock options"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":true,"industries":["Language Learning","E-learning","Speech & Audio AI"],"lifecycle":[{"event":"open","at":"2026-08-27T16:14:18Z"}],"visa":[],"liveness":{"score":33,"band":"fade","label":"Fading","p_open":1,"p_active":0.597,"p_room":0.55,"age_days":50,"expected_fill_days":37,"reasons":["conf:3","win:tail"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":220000,"is_top_pay":true},"html_url":"https://alion.io/job/boldvoice-senior-data-scientist-nyc","json_url":"https://alion.io/job/boldvoice-senior-data-scientist-nyc.json","meta":{"generated_at":"2026-10-18T03:01:15Z","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":4793,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":543},"rest":"https://alion.io/mcp/rest/get_company?id=543"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fboldvoice-senior-data-scientist-nyc"},{"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%2Fboldvoice-senior-data-scientist-nyc"},{"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%2Fboldvoice-senior-data-scientist-nyc"},{"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/boldvoice-senior-data-scientist-nyc\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fboldvoice-senior-data-scientist-nyc"}]}