Senior Software Development Engineer in Test (SDET) - Remote

Overview

Flex is a growth-stage, NYC headquartered FinTech company that is creating the best rent payment experience. It’s hard to believe that it’s 2026 and paying rent on time is expensive, inflexible, and difficult. We’re here to change that! Flex enables our users to pay rent throughout the month on a schedule that better fits their finances and budget. Our mission is to empower as many renters as possible with flexibility over their most significant recurring expense. After deliberately keeping a stealth profile as we built up unprecedented investor support and an enthusiastic user base, we are looking for motivated individuals to help us keep our mission growing. Will you be a part of the team?

In Short

• Own test automation and quality efforts for product areas or major features.
• Architect and optimize automation frameworks.
• Lead test strategy for complex systems.
• Collaborate across teams for reliable releases.
• Mentor junior SDETs and QA team members.
• Integrate automated testing into CI/CD pipelines.
• Analyze test coverage and identify gaps.
• Investigate and resolve complex defects.
• Champion adoption of quality best practices.
• Provide technical guidance in test architecture.

Requirements

• Bachelor’s degree in Computer Science or related field.
• 4+ years of experience in software development and test automation.
• Advanced proficiency in multiple programming languages.
• Deep experience with automation frameworks (e.g., Playwright, Cypress, Selenium).
• Strong expertise in API, UI, and integration testing.
• Proficient in CI/CD pipeline integration.
• Skilled in test strategy development and risk analysis.
• Advanced debugging and troubleshooting skills.
• Solid understanding of database systems and SQL.
• Experience with observability and monitoring tools.

Benefits

• Competitive medical, dental, and vision plans.
• Company equity.
• 401(k) plan with company match.
• Unlimited paid time off + 13 company paid holidays.
• Parental leave.
• Flex Cares Program: Non-profit company match + pet adoption coverage.
• Free Flex subscription.