Megan Sigsworth
← Resume

Thrive Causemetics

Senior Software Engineer (Jul 2024 – Present). Leads performance, extensibility, and platform decisions on a global, high-traffic Shopify Plus storefront.

Middleware overage remediation (~$500K)

  • Resolved middleware asset charges overage by refactoring the integration + data flow.
  • Reduced risk of potential lost revenue by stopping incorrect asset counting/usage.
  • Documented the decision path so ops and engineering could maintain the behavior confidently.

Performance initiative (~0.5s faster PDPs)

  • Cut load times by roughly 0.5 seconds on high-revenue product detail pages.
  • Implemented structured bug triage and reporting to prevent regressions.
  • Focused on Core Web Vitals and conversion-critical surfaces (not vanity metrics).

Platform migration to unlock native Shopify AI

  • Scoped, pitched, and authored a reversal from headless architecture toward native Shopify.
  • Goal: reduce total cost while enabling Shopify’s native AI features and future platform launches.
  • Project ongoing with parallel data migration tooling to minimize disruption.

Shopify extensibility: Pixel, Checkout, Discounts

  • Led Shopify Pixel implementation work aligned to modern tracking patterns.
  • Completed Checkout Extensibility migration to reduce technical debt.
  • Worked through Discount Functions so product and merchandising teams can ship faster.

Analytics hygiene (GTM audit + cleanup)

  • Audited, documented, and cleaned up Google Tag Manager to remove out-of-use pixels.
  • Improved signal quality for performance work and experimentation.
  • Built operational checklists for safe rollout + rollback.

Integrations (Algolia, Klaviyo, Rebuy, Rivo, Yotpo)

  • Customized integrations with key third-party services to align with the storefront architecture.
  • Balanced build-vs-buy decisions with maintainability and team handoffs.
  • Partnered with cross-functional teams to ensure integrations remained stable under peak demand.