Joana Darc Costa

About Joana Darc Costa

Staff Quality Engineer with 7+ years of experience working on large-scale web and mobile platforms, with a strong focus on building reliable and scalable quality practices.My work sits at the intersection of quality and engineering. I design test strategies that balance risk, speed, and product impact, and I focus on using automation to improve confidence across the development lifecycle.I have hands-on experience building and maintaining automated test suites using JavaScript, Playwright, Selenium, and WebDriver, helping teams reduce manual effort and catch issues earlier.Beyond testing, I partner closely with engineering, product, and design to identify risks early, improve system reliability, and support high-quality releases at scale.I bring a strong engineering mindset to quality, focusing on automation, scalability, and building reliable systems rather than only validating features.

Experience

1. Staff Quality Engineer

   Fanatics

   Nov 2022 — Present · San Francisco, CA, US

   Own quality strategy for high-impact e-commerce features, leading feature-specific and end-to-end testing across web platforms with a strong focus on user experience and release confidence.* Partner with software engineers, product managers and leadership to define pragmatic testing strategies, balancing risk, timelines and business impact for each release.* Engage in early-stage product and design reviews to identify risk areas and create proactive test plans that reduce late-stage defects.* Lead release certification by analyzing test results, evaluating residual risk and advising on go/no-go decisions for production deployments.* Design, develop and maintain automated test suites using JavaScript with Selenium, WebDriver and Playwright, reducing manual testing effort and improving regression reliability.* Provide mentorship and guidance on quality practices and automation techniques, helping raise testing standards and consistency across teams.* Lead the certification of an in-house A/B experimentation platform, validating experiment integrity, data accuracy and reliability to support business decision-making.* Certify A/B Testing features through pre-release validation and post-launch analysis to ensure experiment results are trustworthy and aligned with business objectives.

Education

• PUC Minas

  Bachelor in Information System, Computer Science

Skills

• Cucumber
• Casos De Teste
• Page Objects
• Linux
• Javascript
• Uml
• Selenium
• Mysql
• Java
• Ruby
• Html + Css
• Automação De Testes
• Bdd
• Operating Systems
• C++
• Teste Manual