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Flex

Senior Software Development Engineer in Test (SDET)

Flex, a growth-stage FinTech enterprise headquartered in New York City, builds a digital payment layer that helps households manage and split their essential bills while offering…

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Role Snapshot

Hiring Now
Work arrangement
Remote
Where applicants may be
Applicants in United States only
Salary
Not specified
Apply by
Not specified
Employment type
Full-time
Experience
Not specified
Added to Jobsiz2h agoEmployer posted Oct 15, 2026
Listing Views1
Applications0
Apply BeforeNo deadline

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About This Role

Flex, a growth-stage FinTech enterprise headquartered in New York City, builds a digital payment layer that helps households manage and split their essential bills while offering options to build a positive credit history. The organization brings together diverse professionals to solve complex problems and deliver impactful financial solutions. Flex is currently seeking a Senior Software Development Engineer in Test (SDET) to take ownership of quality assurance and test automation efforts…

Job Description

Flex, a growth-stage FinTech enterprise headquartered in New York City, builds a digital payment layer that helps households manage and split their essential bills while offering options to build a positive credit history. The organization brings together diverse professionals to solve complex problems and deliver impactful financial solutions.

Flex is currently seeking a Senior Software Development Engineer in Test (SDET) to take ownership of quality assurance and test automation efforts across major features and product domains. In this capacity, the professional will architect automated testing frameworks, guide cross-functional quality initiatives, lead risk analysis, and mentor junior team members. This remote role involves collaborating closely with product, engineering, and quality leaders to maintain high reliability and support continuous deployment pipelines.

Compensation is determined through a market-based approach depending on the candidate geographic tier. Tier 1 locations range from $136,000 to $170,000 USD, Tier 2 ranges from $122,400 to $153,000 USD, and Tier 3 ranges from $115,600 to $144,500 USD.

Responsibilities

  • Architect, implement, and optimize automated test frameworks for complex product areas to ensure reliability and maintainability
  • Design and maintain robust automated test suites covering API, UI, and integration testing
  • Lead test strategy development and conduct risk analysis for major features and systems
  • Integrate automated testing into continuous integration and delivery pipelines
  • Identify systemic quality issues and drive cross-team process improvements
  • Analyze test coverage gaps and implement solutions to enhance overall product quality
  • Collaborate with engineering, product, and quality leaders on release planning and quality initiatives
  • Provide technical guidance and mentorship to junior SDETs and quality assurance team members
  • Review code and test cases contributed by other engineers for maintainability
  • Maintain accurate test documentation, reports, and quality metrics
  • Investigate and resolve complex defects and production issues through advanced debugging

Requirements

  • At least 5 years of experience in software development and test automation
  • Advanced proficiency in multiple programming languages and test automation frameworks
  • Extensive background in designing, building, and maintaining frameworks such as Playwright, Cypress, Selenium, or RestAssured
  • Expertise in API, UI, and integration testing
  • Proficiency in continuous integration and delivery pipeline integration
  • Strong skills in test strategy development, risk analysis, and test architecture
  • Solid understanding of database systems and advanced SQL
  • Experience utilizing observability and monitoring tools such as DataDog and NewRelic

Qualifications

  • Bachelor’s degree in Computer Science or a related field, or equivalent practical experience
  • Proven background in leading test strategy and making high-impact technical decisions under ambiguity

Core Skills

Benefits

  • Equal opportunity workplace culture focused on inclusivity
  • Relocation assistance program for eligible candidates outside specific hub areas

Frequently Asked Questions

Answers are based only on the employer’s listing; where it doesn’t say, neither do we.

What is the remote work policy for this position?

This role is remote, though Flex also maintains physical offices in New York City, San Francisco, and Salt Lake City where local roles may follow a hybrid schedule.

What is the salary range for the Senior SDET role?

Compensation varies by geographic tier based on a cost of labor index. Tier 1 ranges from $136,000 to $170,000 USD, Tier 2 ranges from $122,400 to $153,000 USD, and Tier 3 ranges from $115,600 to $144,500 USD.

What level of experience is required?

Applicants must have at least five years of experience in software development and test automation, along with a bachelor's degree in Computer Science or equivalent practical experience.

How can I apply for this position?

The job posting does not specify the exact application submission process beyond viewing career information on the company's designated careers webpage.

Sample Interview Questions

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Posted by Flex

Source: Remote First Jobs — QA

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Posted by employer: Oct 15, 2026

Added to Jobsiz: Oct 17, 2026

The description was written by Jobsiz from the employer’s listing. Always check the original listing before applying.

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