Senior Software Engineer in Test

Zip Co Limited

13h • $146,000 - $157,000 • Remote

About The Position

Zip is hiring a Senior Software Engineer in Test to own end-to-end quality verification and validation for complex systems, from design through production. The role helps shape verification and validation standards as the engineering model evolves. It is a remote-first opportunity for US-based employees, with the option to work in person from Zip’s Manhattan office.

The position is part of Zip’s Engineering team, working in an agile, AI-forward development environment to build cloud-native software applications serving millions of customers and processing billions of dollars in payments. The engineer partners with engineering, design, product managers, and other stakeholders to ensure quality is built into products. The role designs comprehensive test strategies, drives root cause analysis, and applies disciplined verification and validation to releases as Zip’s verification and validation organization develops.

Requirements

• At least 8 years of experience in quality engineering, QA automation, or SDET roles, with a track record of owning quality for complex production systems.
• Strong critical-thinking skills and ability to identify edge cases, failure scenarios, and subtle bugs.
• Deep understanding of unit, integration, end-to-end, contract, and regression testing strategies.
• Strong programming skills, preferably in TypeScript, JavaScript, or similar languages.
• Experience building backend/API and frontend/UI automation frameworks; examples include BrowserStack, Playwright, Cypress, Selenium, and Appium.
• Experience integrating tests with CI/CD systems and test pipelines.
• Familiarity with mocking, stubbing, and test data management.
• Strong debugging and problem-solving skills, including the ability to understand system architecture and identify risk areas.
• Proactive mindset focused on prevention over detection.
• Experience using AI-assisted development tools for testing, debugging, and technical problem-solving to improve software quality, team productivity, and delivery speed.
• Ability to evaluate and apply emerging AI capabilities to engineering workflows with sound judgment about quality, security, and maintainability.
• Ability to learn and adapt, work in a fast-paced environment, and operate amid ambiguity as the Verification & Release model evolves.
• Ownership and accountability for outcomes, comfort challenging assumptions, and willingness to advocate for quality.
• Experience mentoring engineers and raising quality standards across a team.

Nice To Haves

• Experience with performance testing, BDD frameworks, or microservices architectures.
• Experience working in high-scale or fintech environments.

Responsibilities

• Own end-to-end quality verification and validation for complex systems from design through production.
• Apply verification and validation principles to testing, confirming systems meet specifications, architecture, and code-quality expectations and solve the intended business problems.
• Design and execute comprehensive test strategies focused on edge cases, failure modes, and real-world scenarios.
• Build and maintain scalable automation frameworks for backend API and integration testing and frontend UI and end-to-end testing.
• Identify gaps in test coverage and system behavior.
• Drive root cause analysis and contribute to defect and incident prevention strategies.
• Use AI-assisted tools throughout the testing lifecycle to accelerate test design, improve debugging, and speed technical problem-solving.
• Apply verification and validation rigor to AI- and agent-produced work as well as human-written code.
• Explore practical uses of emerging AI capabilities to improve quality engineering workflows, automate repetitive testing, and strengthen release confidence.
• Continuously improve test efficiency, reliability, and execution speed.
• Mentor team members and raise quality standards across the team.

Benefits

• Flexible working culture.
• Incentive programs.
• Unlimited PTO.
• Generous paid parental leave.
• Family support policies.
• Company-sponsored 401(k) match.
• Learning and wellness subscription stipend.
• Manhattan Union Square office with a casual dress code.
• Employer-sponsored insurance for employees and dependents, with several options fully covered by Zip.
• Potential bonus and/or commission awards as part of total compensation.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed