Senior SDET (Software Development Engineer in Test)
Job Summary
The Mission: Core Payments
The Core Payments team is the revenue engine powering Fullscripts growth.
We own the end-to-end ecommerce 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
Were 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 Youll 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 speed and signal quality
- Identify systemic quality gaps and address them through tooling and engineering improvements
- Partner with engineers to design systems for testability (e.g. observability contracts idempotency)
- Write production-quality code for test systems utilities and supporting infrastructure
- Improve developer experience by enabling fast reliable feedback loops
- Validate complex payment flows and external integrations (e.g. Stripe) through automation-first approaches
- Lead root cause analysis for defects and implement systemic fixes to prevent recurrence
- Define and enforce quality standards for high-reliability revenue-critical systems
What You Bring
- 5 years of experience in software engineering SDET or test automation roles
- Proven experience designing and maintaining test automation frameworks at scale
- Experience with API integration and end-to-end testing patterns
- Strong understanding of CI/CD systems and test pipeline optimization
- Experience improving test reliability performance and maintainability
- Ability to design systems for testability (e.g. dependency injection contract testing)
- Experience working with distributed systems and understanding failure modes
- Experience with payments e-commerce or financial systems (preferred)
- Strong collaboration skills and ability to influence engineering practices
What We Offer
- Generous PTO and competitive pay
- Fullscripts RRSP match program for financial health
- Flexible benefits package and workplace wellness program
- Training budget and company-wide learning initiatives
- Discount on Fullscript catalog of products
- Ability to work Wherever You Work Well*
Why this role matters
This team owns systems where defects directly impact revenue financial accuracy and customer trust. This role ensures quality is engineered into the systempreventing issues before they reach production and enabling safe reliable delivery at scale.
A quick note: Due to the high volume of applications were not able to respond to phone or email inquiries about application status. If theres a match our team will reach out directly.
Required Experience:
Senior IC
About Company
Join thousands on Fullscript in making health last with a platform for personalized treatment planning, active wellness support, and top-quality supplements.