Senior Software Engineer

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  and follow the company on LinkedIn, X (Twitter) and Facebook.

At Guardant Health our mission is to conquer cancer with data - as such software sits at the core of everything we do. While we're best known for our molecular diagnostics, which unlock the genomic signatures of cancer, these tests are just the first step in the equation. Turning this genomic data into actionable insights shared with thousands of patients, physicians, and researchers in a scalable, reliable, and secure fashion is a software product challenge.

We are building a unique software stack to manage an ecosystem of microservices, RESTful APIs, and data integrations with internal and external systems to deliver frictionless and elegant user experiences in the extraordinarily complex oncology diagnostic and therapeutic landscape. We connect patients with clinical trials, help clinicians order our test and receive our clinical reports, and deliver valuable genomic datasets to researchers to help uncover important insights into treatment paradigms and drug discovery. Our technology stack reflects our views of using the best tools for the job, employing Java, Python, Ruby, Node, React along with Kubernetes, Docker, MuleSoft, MySQL, MongoDB, Redis, high-performance computing clusters (HPC), and a variety of AWS services to analyze and disseminate vast volumes of genomic data.

The Software team is looking for an experienced and energetic Staff Software Engineer to be a key contributor to our next generation Oncology Portal that will serve physicians, care teams, patients and researchers. Your expertise will influence the product design and architecture. You will get to work side by side with a team of world-class doctors and researchers who want to impact global healthcare delivery.

As a member of the software team, you will:

• Put laser focus on customer experience - usability, user interface design and change management for our ecosystem of users
• Design, develop, document, deploy and support Guardant Oncology Portal software ecosystem
• Analyze complex requirements, create simple designs, vet with multiple stakeholders and cross-functional teams
• Build and maintain an ecosystem of services and applications that provide unique value add
• Initiate and lead technical design discussions within and across technical teams
• Create artifacts, such as design and implementation, to guide development, implementation and support
• Code for efficiency, reusability, scalability and all other -ilities by following existing frameworks and practices or creating new ones when needed
• Develop and maintain automated tests for regular releases
• Participate in the testing process through test review and analysis, test witnessing, and certification of software
• Provide second-tier production support

• 8+ years of enterprise full-stack software development in a fast-paced environment leveraging an agile development framework, test automation, and continuous integration.
• 6+ years of working with user-facing applications and championing seamless UX/UI
• 6+ years of working with ReactJS or other front-end JavaScript frameworks
• 6+ years of experience developing production software in Java
• 6+ years of experience designing, developing, and consuming RESTful APIs using RAML, Swagger / OpenAPI
• 4+ years of hands-on experience with data modeling, developing schemas (relational and NoSQL data stores, XML/JSON), data management, ingestion, and processing
• 3+ years of experience with Amazon Web Services or other cloud services
• Demonstrated knowledge of distributed and scalable systems
• Deep understanding and track record of utilization of contemporary architectural patterns and methodologies such as microservices, serverless, CQRS and DDD
• Bachelor's degree in software engineering, CS, or EE or equivalent

Desired, but not required:

• Knowledge of Ruby on Rails
• Experience in healthcare industry
• Understanding of laboratory operations, regulations, and compliance in the healthcare industry
• Experience working or integrating with commercial off-the-shelf platform such as Salesforce, Oracle ERP, or others