Senior SDET (Software Development Engineer in Test)

The Mission: Core Payments

The Core Payments team is the revenue engine powering Fullscript’s growth. We own the end‑to‑end e‑commerce experience, including cart, checkout, payments, taxes, discounts, payouts, and financial reporting. Every transaction flows through these systems, requiring high reliability, security, and correctness.

The Role

We’re hiring a Senior SDET to own the engineering of quality for revenue‑critical payment systems. This role focuses on building and evolving automated testing systems, improving developer workflows, and ensuring quality is enforced through engineering practices and not just manual validation.

What You’ll Do

• Own the design, development, and maintenance of scalable automated test frameworks (Playwright, API, integration, end‑to‑end)
• Build and operate reliable test infrastructure integrated into CI/CD pipelines
• Drive test automation strategy, optimizing for coverage, spee...