--- title: 'Senior Data Scientist at BranchLab' canonical: 'https://feeny.ai/job/senior-data-scientist-branchlab-boulder-bpgfwjg12452' type: 'job' last_seen: '2026-11-02' --- # Senior Data Scientist at BranchLab - **Company:** BranchLab - **Location:** Boulder, CO - **Employment:** full-time - **Work type:** hybrid - **Posted:** 2026-10-21 - **Last confirmed live:** 2026-11-02 - **Apply:** https://jobs.ashbyhq.com/branchlab/645f8972-6ee6-4d46-8a96-b4961d0d1f01 ## Job description Sr Data Scientist Location Boulder, CO Employment Full time | Hybrid Reporting to VP of Data Science and AI Not sure you meet every qualification? We encourage you to apply if you’re excited about this role and believe you could do it well. We value relevant experience in many forms, and you don’t need to check every box to be considered! ## Who We Are BranchLab's mission is to make healthcare commercialization more effective, efficient, and responsible, connecting patients and providers with therapies and resources that can improve lives while protecting privacy. Our AI-native platform, Pathwai™, helps healthcare marketers create and continuously improve high-performing advertising audiences across patients, healthcare professionals, and caregivers. Pathwai combines advanced healthcare AI, agentic workflows, integrated audience activation, and performance measurement and optimization in one connected system. ## Why Join BranchLab - Help better therapies and resources reach people through work at the intersection of healthcare, data, and technology. - Join a nimble team where ideas move quickly and your work is visible and valued. - Gain exposure to a broad range of Data Science capabilities from production models and deep learning to AI agents in a regulated space. The Opportunity The Data Science team builds the models behind Pathwai™, constantly iterating to make them better and build new capabilities over time. We are experts in the data behind the models. The Sr Data Scientist will specialize in the healthcare data by owning custom experiments and analyses, running feasibilities, and evaluating new data partners. They will partner cross-functionally with client success, engineering, product, and partnerships roles to deliver rigorous analyses and results that have a direct client and product impact. ## What You Will Do - Design experiments and implement analyses to build audiences that cannot currently be built in platform - Drive feasibilities to inform product requirements and capabilities - Evaluate potential new data sources and provide recommendations on the value-add of these sources - Work directly and independently with client success, product, and partnerships team mates to achieve the above ## Minimum Qualifications - 5+ years of experience working on healthcare claims, EHR or similar data to deliver client-facing results - Strong proficiency in Python and SQL - Strong proficiency in statistics and experimental design - Demonstrated ability to translate business and customer priorities into analysis results - Ability to adapt communication to different internal and external stakeholders ## Preferred Qualifications - Proficiency with pyspark, AWS, and github - Experience in pharmaceutical marketing or commercialization - Advanced degree in Data Science, Statistics, Applied Mathematics, Epidemiology, or related field ## Equal Employment Opportunity BranchLab is an equal opportunity employer. We are committed to providing a workplace free from discrimination, harassment, and retaliation. Employment decisions are based on qualifications, merit, and business needs, without regard to race, color, religion, creed, national origin, ancestry, citizenship or immigration status, sex, pregnancy or related medical conditions, sexual orientation, gender identity or expression, age, disability, genetic information, marital, familial or caregiver status, military or veteran status, or any other characteristic protected by applicable law. Applicants and employees have the right to request a reasonable accommodation for a disability, pregnancy, childbirth or a related medical condition, or sincerely held religious belief or practice. To request an accommodation during the application or interview process, please contact people@branchlab.com. BranchLab prohibits retaliation against anyone who requests an accommodation, reports discrimination or harassment, participates in an investigation, or otherwise exercises rights protected by law. ## About BranchLab ## Company Overview - **One-liner**: BranchLab provides a unified, privacy-first AI platform for pharmaceutical commercialization, enabling teams to predict health outcomes and optimize audience targeting for therapies. - **Entity Type**: Private (Series A) - **Headquarters**: New York, New York, USA & Boulder, Colorado, USA - **Founded**: 2024 - **Founders**: Josh Walsh (CEO), Dan Parkes (CTO), Michael Parkes (President & CRO) ## Core Business - **Primary industry/industries**: Healthcare AI, Pharmaceutical Commercialization, Healthcare Advertising Technology - **Target customers**: B2B — primarily pharmaceutical manufacturers (commercialization teams), advertising agencies, and publishers/platforms in the healthcare space - **Mission or purpose statement**: “To enable better healthcare decisions by applying AI in a way that is privacy-safe, rigorous, and designed for real-world use.” ## Products & Services - **Pathwai™ Platform**: A unified AI platform for pharma commercialization that predicts health outcomes without using Protected Health Information (PHI). It unifies research, marketing, and measurement in one system. - **Agentic Audience Creation & Optimization**: AI-driven tool to design and refine audiences using predictive modeling, deployable across all media types and channels. - **Omnichannel Activation**: Allows teams to explore and discover relevant audiences without exposing PHI, and activate proprietary audiences for greater qualified reach. - **Outcomes Optimization & Learning**: Measures real-world impact and continuously improves campaign performance using transformer-based architecture that trains on health data within customer-controlled environments. ## Market Standing - **Valuation/Market Cap**: Not disclosed - **Key Metric**: Total funding of $35 million (latest: $26M Series A raised in May 2026) - **Notable Investors/Partners**: McKesson Ventures (lead), FCA Venture Partners, Sanofi Ventures, AIX Ventures, plus 10 other investors including CIMM Startup Program - **Growth Signals**: - Founded in 2024 and raised Series A within ~2 years - Reports delivering an average increase of nearly **70% in marketing efficacy** across diverse therapeutic areas - Claims **90% higher performance** than industry average audience quality vs. claims-based targeting - Reports **20× reduction** in cost per target audience reached - Claims **3× lower CPM** compared to competitive predictive audience targeting - Reports **30× faster** time to execute healthcare campaigns ## Competitive Advantages - **Privacy-first AI Architecture**: Uses a novel transformer-based model that trains on health data within customer-controlled environments while deploying only non-sensitive demographic and media-side signals — a key differentiator in the highly regulated pharma space. - **Unified Platform**: Replaces fragmented, offline workflows (typically involving multiple vendors for patient identification, segmentation, activation, and measurement) with a single AI-driven platform. - **No PHI Required**: Predicts health outcomes using only demographic data, enabling compliance with strict privacy regulations (HIPAA, etc.) while still delivering performance. - **Speed**: Collapses workflows that used to take months into minutes, giving pharma teams near real-time decision-making capability. ## Strategic Focus - Expand enterprise deployments with leading pharmaceutical companies - Deepen integrations across the healthcare and media ecosystem (publishers, platforms, agencies) - Continue building out the unified AI platform for pharma commercialization as the “infrastructure layer for how therapies are brought to market in the AI era” - Scale the team across engineering, data science, product, and client success roles ## Why Work Here - **High-growth startup**: Founded in 2024 and already at Series A with $35M total funding, backed by top-tier healthcare and AI investors including McKesson Ventures and Sanofi Ventures. - **Meaningful mission**: Work on AI that directly impacts how patients learn about and access life-improving therapies — the company explicitly states their work is grounded in “the belief that more informed, compliant, and predictive decision-making can meaningfully improve how healthcare systems serve patients.” - **Cutting-edge AI work**: Building novel transformer-based architectures for regulated environments — a challenging technical problem at the intersection of AI, healthcare, and privacy. - **Flexible locations**: Offices in both New York, NY and Boulder, CO — roles are listed as hybrid/on-site in those locations (specific policy per role). - **Engineering & data science focus**: Current open roles include Software Development Engineer, Data Scientist, Senior Data Scientist, Manager of Data Science, and Product Designer — indicating a strong technical core. - **Early-stage culture**: Opportunity to shape product, infrastructure, and culture at a formative stage; the company has a small team (LinkedIn shows ~2-10 employees range) offering high ownership and impact. - **Leadership credibility**: CEO Josh Walsh and CTO Dan Parkes bring deep domain expertise; the team includes VP of Data Science & AI Kat Drake. ## Sources 1. [branchlab.com](https://branchlab.com/) 2. [branchlab.com/about](https://branchlab.com/about) 3. [branchlab.com/careers](https://branchlab.com/careers) 4. [cbinsights.com](https://www.cbinsights.com/company/branchlab) 5. [linkedin.com](https://www.linkedin.com/company/branch-lab) ## Other roles at BranchLab - [Sales Director / Account Executive](https://feeny.ai/job/sales-director-account-executive-branchlab-new-york-907xevnr4fkc) — New York, NY - [Healthcare Audience Strategist](https://feeny.ai/job/healthcare-audience-strategist-branchlab-boulder-m7bczh51cq1t) — Boulder, CO - [People Operations Associate/Manager](https://feeny.ai/job/people-operations-associate-manager-branchlab-boulder-hzzaw116tn8c) — Boulder, CO - [Enterprise Sales](https://feeny.ai/job/enterprise-sales-branchlab-new-york-gbr032y6ef50) — New York, NY - [Senior Software Development Engineer](https://feeny.ai/job/senior-software-development-engineer-branchlab-boulder-zw7d7k27nqfh) — Boulder, CO - [Technical Product Marketing Manager](https://feeny.ai/job/technical-product-marketing-manager-branchlab-boulder-vgzb11jng49m) — Boulder, CO - [Principal Product Manager, Data Products & Integrations](https://feeny.ai/job/principal-product-manager-data-products-integrations-branchlab-boulder-qqj12g33z33h) — Boulder, CO - [Principal Product Manager, Measurement, Planning & Optimization](https://feeny.ai/job/principal-product-manager-measurement-planning-optimization-branchlab-boulder-yyk3t2srf64j) — Boulder, CO - [Create your Dream Job](https://feeny.ai/job/create-your-dream-job-branchlab-boulder-key6djnxn48z) — Boulder, CO / New York, NY - [Client Success Manager](https://feeny.ai/job/client-success-manager-branchlab-new-york-mvxw844rgram) — New York, NY