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Mid-level Software Development Engineer in Test (SDET)

We are seeking a Mid-level Software Development Engineer in Test (SDET) focused on testing web and mobile applications in the online banking domain. You’ll be joining a fast-paced quality engineering team that values precision, co...

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99x Brazil São Paulo, State of São Paulo, Brazil Source published Aug 28, 2026 Verified 2 weeks ago
✓ 92% verification score · Source: 99Xbrazil Careers · Always confirm final requirements on the original source.
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Mid-level Software Development Engineer in Test (SDET) at 99x Brazil
EmploymentFull Time
Work modeRemote / location-flexible
CountryBrazil
Job functionInformation Technology
IndustryInformation Technology and Services

Overview

We are seeking a Mid-level Software Development Engineer in Test (SDET) focused on testing web and mobile applications in the online banking domain. You’ll be joining a fast-paced quality engineering team that values precision, collaboration, and continuous improvement. Reponsibilities: Develop and maintain custom test automation frameworks using open-source tools (e.g., Selenium, Playwright, Cypress). Architect scalable and reusable automation solutions across platforms. Implement advanced testing strategies including performance, security, and API testing. Collaborate closely with developers to ensure testability and quality in code design. Drive continuous improvement in testing practices and tooling across the organization. Requirements B2 English proficiency 4+ years of automation engineering or software development experience Strong coding skills and automation framework experience

Full job description

Description

Full Job Description

We are seeking a Mid-level Software Development Engineer in Test (SDET) focused on testing web and mobile applications in the online banking domain. You’ll be joining a fast-paced quality engineering team that values precision, collaboration, and continuous improvement.

Reponsibilities:

  • Develop and maintain custom test automation frameworks using open-source tools (e.g., Selenium, Playwright, Cypress).
  • Architect scalable and reusable automation solutions across platforms.
  • Implement advanced testing strategies including performance, security, and API testing.
  • Collaborate closely with developers to ensure testability and quality in code design.
  • Drive continuous improvement in testing practices and tooling across the organization.

Requirements

  • B2 English proficiency
  • 4+ years of automation engineering or software development experience
  • Strong coding skills and automation framework experience
  • Experience with API testing and automation frameworks
  • Experience working in CI/CD environments
  • Experience testing web UI applications and mobile applications (iOS and Android).
  • Experience working with SQL databases for test data validation and backend verification.
  • Exposure to low-code/no-code automation platforms such as Testim is a plus.
  • Familiarity with AI fundamentals and AI usage in software testing
  • Strong understanding of QA methodologies, tools, and processes.
  • Familiarity with Agile/Scrum development practices.
  • Experience clearly articulating issues and collaborating across teams.
  • Experience in the banking or fintech industry is a plus.

Benefits

  • We provide resources for you to grow and learn on the job, including online courses, mentoring, and the latest gen laptops;
  • A fully remote work environment with flexible working hours;
  • Bonus for any referrals that we end up hiring.

Qualifications And Requirements

Mid-Senior level

Requirements & qualifications

Mid-Senior level

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Verification notes

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