Senior QA Engineer

Role Overview

Senior QA Engineer at LNDMRK. This is a solo QA role responsible for building and owning the testing discipline across the entire platform from the ground up.

Role Purpose

Own quality end-to-end by designing and implementing an automated testing strategy, defining QA processes from scratch, and working directly with product and engineering to ensure the platform ships with confidence.

Key Responsibilities

Test Strategy & Automation

• Design and implement an automated testing strategy from scratch covering frontend (React/TypeScript) and backend (FastAPI/Python) across the platform.
• Build and maintain end-to-end test suites using Playwright or equivalent.
• Write API-level tests against FastAPI endpoints.
• Integrate automated tests into the CI/CD pipeline to catch regressions before they reach production.

Coverage & Domain Ownership

• Own test coverage across core domain areas including property listings, search, offer and negotiation workflows, payments (Stripe), user authentication, and admin tooling.
• Perform exploratory and manual testing on new features before release, thinking well beyond the happy path.
• Work closely with the full-stack developer to catch issues early in the development cycle, not just at the end.

Process & Documentation

• Define and document QA processes, test plans, bug reporting standards, regression cycles, and release checklists, building these from scratch where none currently exist.
• Track and manage defects clearly, prioritize by impact, and communicate quality risk to the team without noise.

Qualifications & Experience

• 7+ years of QA experience with a strong automation-first mindset.
• Proven experience building automated test frameworks from scratch, not maintaining someone else's.
• Solid Playwright or Cypress skills for end-to-end testing.
• Pytest or equivalent experience for backend API testing.
• Comfortable in environments without defined QA processes; create structure rather than wait for it.
• Ability to read and understand application code in Python and TypeScript well enough to write meaningful tests and identify risk areas.
• Strong understanding of CI/CD pipelines and how to integrate automated tests into a delivery workflow.
• Sharp analytical thinking to find edge cases, state transitions, and failure modes that others miss.
• Clear written English and ability to communicate defects and quality risk concisely to a technical team.
• Experience in fintech, asset transaction-based platforms, or marketplace platforms (preferred).
• Familiarity with payment flows, compliance requirements, and high-value transactional UX (preferred).
• Performance testing experience using k6, Locust, or similar tools for API load and stress testing (preferred).
• Security testing awareness: OWASP basics, auth boundary testing, and input validation (preferred).
• Stripe payment testing experience including test mode, webhook simulation, and checkout edge cases (preferred).
• Experience working in a small, early-stage team where quality ownership sits with one person (preferred).

Skills & Competencies

• Automation-first mindset; reach for code before manual processes and build test frameworks that scale with the product.
• Builder mentality; energized by creating structure from nothing and take pride in the quality discipline established.
• Analytical thinking in edge cases, failure modes, and state transitions.
• Collaborative approach; work closely with developers and product from the start of a feature, not just the end.
• Clear communication of quality risk and defect priority to a technical team without creating noise.
• Ownership-driven approach; own quality across the whole platform and do not wait to be told where to look or what to fix.

Additional Information

• Competitive salary depending on experience.
• Equity participation in a high-growth, venture-backed platform.
• Full ownership of the QA function and the opportunity to build it from the ground up.
• Direct collaboration with the founder, CTO, and engineering team.
• Fast-moving environment where work has immediate, visible impact.
• Clear career progression path as the engineering team scales.