[Remote] Staff Engineer – Experimentation Team

Note: The job is a remote job and is open to candidates in USA. LaunchDarkly is a company focused on improving software delivery and helping developers innovate faster. As a Staff Engineer on the Experimentation team, you will build a platform for data-driven decision-making, design statistical engines, and lead adaptive experimentation efforts.ResponsibilitiesBuild the experimentation statistical engine — hypothesis testing, sequential analysis, variance reduction (CUPED, Winsorization), power analysis. Ensure statistical correctness across all experiment typesDesign warehouse-native experimentation that runs analysis inside customer warehouses (Snowflake, Databricks, Redshift, BigQuery). Build modular, warehouse-agnostic abstractions for rapid new backend supportLead adaptive experimentation — contextual bandit systems, Bayesian optimization, automated allocation beyond simple A/B testsDrive the platform roadmap with product, design, and data science. Shape what we build, not just howCollaborate cross-functionally with Warehouse Integrations, SDK, Platform, and Data Science teamsMentor engineers and raise the team's bar for statistical rigor and system designOwn operational excellence — monitoring, observability, incident response, on-call. Robust telemetry and alertingSkills10+ years building large-scale experimentation platforms, statistical analysis systems, or data-intensive backend servicesApplied-statistics knowledge: hypothesis testing, sequential analysis, variance reduction (CUPED), power analysis, experiment design. Comfortable with frequentist vs. Bayesian trade-offsExperience with adaptive experimentation ML — contextual bandits, Thompson sampling, Bayesian optimization, or RL-based allocationTrack record designing warehouse-agnostic systems across Snowflake, Databricks, Redshift, BigQuery, or similarExpertise in Go, Python, or similar for backend services and statistical computationExperience with event-driven architectures, data pipelines, and large-scale data processingCloud environments (AWS, GCP) with infrastructure-as-codeTechnical leadership: setting direction, breaking down complex problems, influencing across teamsAbility to translate statistical concepts for product and engineering audiencesBenefitsRestricted Stock Units (RSUs)Health, vision, and dental insuranceMental health benefitsCompany OverviewLaunchDarkly is a feature management platform that allows software development teams to deliver to their customers. It was founded in 2014, and is headquartered in Oakland, California, USA, with a workforce of 501-1000 employees. Its website is https://launchdarkly.com/.Company H1B SponsorshipLaunchDarkly has a track record of offering H1B sponsorships, with 1 in 2026, 1 in 2025, 4 in 2024, 2 in 2023, 1 in 2022, 3 in 2021. Please note that this does not guarantee sponsorship for this specific role.