Senior Software Engineer in Test

The posting, as Zip Co Limited wrote it

• Own end-to-end quality verification and validation for complex systems, from design through production.
• Help shape how verification and validation standards evolve as our engineering model matures.
• Remote-first opportunity for US-based employees, with the option to work in person from our Manhattan office.

Start your adventure with Zip

Join Zip's Engineering team and put your name to solving fascinating quality challenges at scale in an agile, AI-forward development environment. If you bring a strong quality mindset, deep technical expertise, and a relentless curiosity to uncover edge cases and hidden defects, you'll be a great fit with the squads responsible for building cloud-native software applications that serve millions of customers and process billions of dollars in payments.

In this role, you will partner closely with engineers, design, product managers, and stakeholders to ensure quality is built in, not tested in. Your ability to design comprehensive test strategies, drive root cause analysis, and bring disciplined verification and validation to every release will be critical as Zip's verification & validation organization continues to take shape.

Interesting problems you'll get to solve

• Apply verification (confirming a system is built right; correct against spec, architecture, and code quality) and validation (confirming it's the right system, that it actually solves the business problem) to everything you test.
• Design and execute comprehensive test strategies with a strong focus on edge cases, failure modes, and real-world scenarios.
• Build and maintain robust, scalable automation frameworks across backend (API, integration testing) and frontend (UI, end-to-end testing).
• Identify gaps in test coverage and system behavior
• Drive root cause analysis and contribute to prevention strategies for defects and incidents.
• Leverage AI-assisted tools throughout the testing lifecycle to accelerate test design, strengthen debugging, and speed up technical problem-solving.
• Apply the same verification and validation rigor to AI- and agent-produced work as to human-written code, as engineering workflows continue to evolve
• Explore practical applications of emerging AI capabilities that improve quality engineering workflows, automate repetitive testing work, and strengthen release confidence.
• Continuously improve test efficiency, reliability, and execution speed.
• Mentor team members and elevate overall quality standards across the team.

What you'll bring to the team

• 8+ years of experience in quality engineering, QA automation, or SDET roles, with a proven track record of owning quality for complex, production systems.
• Strong ability to think critically and identify edge cases, failure scenarios, and subtle bugs.
• Deep understanding of testing strategies (unit, integration, E2E, contract, regression).
• Proven experience owning quality for complex production systems.
• Strong programming skills (pr

[…]
benefits.

*Please note that visa sponsorship is not available for this position.

If hired, employees will be in an 'at-will position' and the Company reserves the right to modify base salary (as well as any other discretionary payment or compensation or benefit program) at any time, including for reasons related to individual performance, Company or individual department/team performance, and market factors.

Be a part of a team that reflects the diversity of our customers

We pride ourselves on being a workplace that provides equal opportunities to people of all ages, cultural backgrounds, sexual orientations, gender identities, abilities, veteran status, and everything else that makes you unique.

Equally, we’re committed to ensuring our recruitment processes are accessible and inclusive. Please let us know If there are any adjustments that need to be made to ensure you have a fair and equitable experience.

And finally…get to know us

Zip Co Limited (ASX: ZIP) is a digital financial services company, offering innovative, people-centered products.

Operating in two core markets - Australia and New Zealand (ANZ) and the US, Zip offers access to point-of-sale credit and digital payment services, connecting millions of customers with its global network of tens of thousands of merchants. We’re proud to be a values-led business and our values - Customer First, Own it, Stronger Together and Change the Game - guide us in everything we do.

I acknowledge by clicking "Submit Application", that the information provided is true and correct. I also understand that any willful dishonesty may render for refusal of this application or immediate termination of employment. By providing your information, you acknowledge that you have read our Zip Applicant and Candidate Privacy Notice and authorize Zip to process your data subject to those terms. Zip participates in the federal government’s E-Verify program. #LI-Remote

Before you apply, give Zip a try -> rebrand.ly/check-zip-out