Senior Software Engineer in Test

Guardant Health is a leading precision oncology company focused on guarding wellness and giving every person more time free from cancer. Founded in 2012, Guardant is transforming patient care and accelerating new cancer therapies by providing critical insights into what drives disease through its advanced blood and tissue tests, real-world data and AI analytics. Guardant tests help improve outcomes across all stages of care, including screening to find cancer early, monitoring for recurrence in early-stage cancer, and treatment selection for patients with advanced cancer. For more information, visit guardanthealth.com and follow the company on LinkedIn, X (Twitter) and Facebook.

Role Overview:

We are looking for a highly skilled Senior Software Engineer in Test with strong expertise in SQL,

Data Analysis, and Cloud platforms. The role focuses on validating data engineering pipelines,

ensuring data accuracy, and delivering high-quality analytics solutions. The ideal candidate should

have a strong analytical data mindset and experience working with modern data platforms.

Duties and Responsibilities:

Must Have

• Design and execute test strategies for data pipelines and analytics systems

• Perform end-to-end data validation including source-to-target reconciliation

• Write complex SQL queries (CTEs, joins, aggregations, window functions) for validating

transformations

• Validate business logic and ensure data accuracy across layers

• Validate Tableau dashboards including KPIs, filters, calculated fields, and data consistency

• Collaborate with data engineers, product managers, and stakeholders

• Build automation scripts using Python for data validation and regression

• Collaborate with data engineering teams to validate data platform functionality

• Experience working with CI/CD pipelines (e.g., Jenkins, GitHub Actions) and automation

frameworks.

Highly Desired

• Lead test planning, test case design, and execution for data systems

• Work closely with cross-functional teams for requirement validation

• Participate in Agile ceremonies and drive QA best practices.

Technology Stack:

Primary Skills (Mandatory)

• Advanced SQL (CTEs, Joins, Aggregations, Window Functions)

• Data Analysis and Data Validation

• Cloud Platforms (AWS/Azure/GCP)

Secondary Skills:

• Python for automation and data validation.

Data & Visualization

• Experience validating Tableau dashboards including KPIs, filters, and calculated fields.

Big Data / Cloud Tools

• AWS ecosystem (S3, Athena, Glue, Airflow)

• Exposure to tools like Spark, Kafka is a plus.

Past Job Experience:

• Experience in testing data platforms, ETL/ELT pipelines, and analytics systems.

• Strong hands-on experience writing complex SQL queries beyond basic validation.

• Experience working in Agile environments and collaborating across teams.

Minimum Qualifications:

• 5+ years of experience in QA/Data Testing roles.

• Bachelor’s degree in Computer Science or related field.

AI & Automation Mindset:

• Working knowledge of AI tools such as ChatGPT, GitHub Copilot, Claude, Codex or similar tools

• Ability to leverage AI tools for generating SQL queries, test cases, and automation scripts

• Use AI tools to accelerate data validation, create test scenarios, and improve regression coverage

• Apply AI for root cause analysis, anomaly detection, and faster debugging of data issues

• Continuously explore AI-driven approaches to improve QA productivity and efficiency.

Job Location: Hyderabad, Telangana, India. (Hybrid model - Work from Office).

 

Why Join Us?

At Guardant Health, we are on a mission to conquer cancer with data. You’ll be part of a team that is revolutionizing precision oncology through cutting-edge technology and innovative software solutions. If you are a technically strong, people-oriented leader who thrives in a collaborative and high-impact environment, we’d love to hear from you!