Growth Engineer

Sauna•San Francisco, CA

36d•$150,000 - $250,000•Onsite

About The Position

Sauna by Wordware is seeking a Growth Engineer to own the engineering efforts that drive customer acquisition. This role involves developing and implementing website experiments, tracking systems, integrations, and internal tools to support growth initiatives. You will collaborate closely with marketers to design and execute experiments, analyze results, and ensure the technical systems and measurements are robust. The position requires a deep understanding of the product, its economics, and the customer journey from initial touchpoint to payment. You will be responsible for ensuring the accuracy and reliability of data used for decision-making and campaign optimization.

Requirements

Shipped production software across frontend, backend, and data.
Comfortable with TypeScript/JavaScript, React, APIs, webhooks, and SQL, with the ability to diagnose problems across the entire path.
Implemented conversion tracking and ad-platform integrations.
Understanding of how conversion signals influence campaign optimization and ability to trace missing or duplicated events.
Instrumented an event-based analytics system (e.g., PostHog) and used the data to make growth or product decisions.
Understanding of funnels, attribution, and acquisition economics, including the ability to explain metric choices, potential pitfalls, and verification methods.
Active use of AI tools with responsibility for their output, ability to explain shipped code and configuration, verify assumptions, and adapt approaches.
Ability to work independently, communicate clearly with nontechnical teammates, and attention to detail regarding the customer experience.

Nice To Haves

Experience growing a usage-based product and accounting for trial or inference costs.
Experience building customer-facing tools that generate qualified demand.
Experience shipping technical SEO infrastructure or automating growth operations.

Responsibilities

Own acquisition tracking end to end, including defining conversion events, implementing browser and server-side tracking, and connecting campaign attribution to signups, product usage, and payments.
Build and maintain integrations with Meta Conversions API, Google Ads conversion tracking, and GTM, ensuring proper consent handling, event deduplication, and monitoring.
Ship website and funnel experiments by building landing pages, forms, and conversion flows using TypeScript and React.
Collaborate with marketing and design to align messaging, offers, and user experience, and test the complete journey across devices.
Ensure data dependability by using SQL and PostHog to investigate funnels and cohorts, reconciling ad-platform reports with product and billing data, and identifying missing or duplicated events.
Evaluate acquisition economics, including trial and inference costs.
Turn hypotheses into tested releases by defining success metrics and guardrails, implementing experiments, analyzing results with statistical care, and recommending actions.
Build tools to automate recurring growth work by connecting analytics, billing, CRM, and marketing systems, utilizing AI coding tools with clear failure handling and inspectability.
Own shipped work through writing tests, reviewing generated code, documenting decisions, and monitoring systems post-release.
Partner with product engineers on security and architecture, and maintain the growth stack's understandability.