Lead Growth Engineer

As a Lead Growth Engineer at Sword, you’ll build and lead the technical engine responsible for driving member acquisition, activation, retention, and monetization across our D2C. Working closely with leadership across Product, Design, Data, and Marketing, you’ll establish the architecture, tools, and team that turn growth hypotheses into high-impact, measurable product experiences. Your work will span architecting experimentation platforms, optimizing full-funnel consumer journeys, and scaling a high-velocity growth engineering discipline that balances rapid experimentation with rock-solid technical foundations.

What you’ll be doing:

• Build, lead, and mentor a high-performing growth engineering team, setting standards for execution velocity, testing rigor, and code quality;
• Architect, scale, and maintain our experimentation infrastructure, including feature flagging, cohort targeting, dynamic personalization, and multi-armed bandit systems;
• Drive full-funnel engineering initiatives across web and mobile platforms to optimize member acquisition, onboarding completion, subscription conversions, and retention loops;
• Implement trustworthy event instrumentation and data pipelines in partnership with Data Science to ensure accurate attribution, funnel telemetry, and statistically sound experiment results;
• Partner directly with Product, Design, and Marketing leadership to translate business objectives into prioritized technical roadmaps and rapid experimentation cycles;
• Champion a culture of data-informed decision-making, rapid iteration, and pragmatic trade-offs between speed-to-market and long-term system architecture;
• Ensure high system performance, data consistency, and failure recovery across critical growth touchpoints and checkout flows;
• Lead the integration of AI tools across engineering workflows to accelerate build cycles while ensuring security, correctness, and maintainability.

What you need to have:

• Proven experience building and operating production services at scale, with deep technical expertise in TypeScript and modern web/mobile architectures;
• Prior leadership experience hiring, managing, or technically guiding growth engineering teams in high-growth product environments;
• Expertise in experimentation engines, feature flag management, event telemetry, and full-funnel analytics;
• Strong business acumen and fluency in core growth metrics (CAC, LTV, activation velocity, conversion rates, and cohort retention);
• Solid foundations in API design, relational databases, data modeling, asynchronous processing, and automated testing;
• Demonstrated ability to translate commercial goals into pragmatic technical solutions while balancing speed and system durability;
• Exceptional communication and cross-functional leadership skills across executive, technical, and non-technical stakeholders;
• Demonstrated Builder (Level 2) or Integrator (Level 3) AI proficiency, with practical experience embedding AI tools into team workflows;
• Fluent English, written and spoken.

Nice To Have:

• Experience with consumer subscription models, payment integrations, or entitlement architectures at scale;
• Familiarity with ML-driven personalization, recommendation systems, or automated lifecycle messaging platforms;
• Experience with Go, cloud infrastructure (AWS/GCP), and event-driven architectures.

This role can sit remotely and the compensation range will be adjusted to accurately reflect the country in which the candidate resides