Karius

Karius is a life sciences company revolutionizing infectious disease diagnostics with the Karius Test™, a non-invasive liquid biopsy detecting over 1000 pathogens from a single blood sample.

Pharmaceuticals

Health Care

51-250 (150)

Founded 2014

$254M raised

9 open positions

Links

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Sr. Software Engineer

3 days, 7 hours ago

United States

Contract

Senior

Software Engineer

Software Development

AWS Cypress Docker GraphQL Jest Kafka Kubernetes Microservices Node.js Playwright PostgreSQL Selenium TypeScript

Apply Now

Karius

Karius is a life sciences company revolutionizing infectious disease diagnostics with the Karius Test™, a non-invasive liquid biopsy detecting over 1000 pathogens from a single blood sample.

Pharmaceuticals

51-250

Founded 2014

$254M raised

View All Jobs 9

Description

Collaborate with cross-functional teams across Engineering, Software Products, Analytics, Lab Operations, and other business partners to understand user needs and objectives.
Develop and share software subsystem designs that address user needs and help teams achieve their goals.
Lead implementation and end-to-end testing of software solutions and components, including user acceptance testing.
Own software subsystems, API sets, or user applications and serve as the subject matter expert for assigned areas.
Develop deep business-domain expertise to ensure software solutions align with operational and user needs.
Contribute to continuous improvement of the engineering lifecycle by enhancing tools, processes, and ways of working.
Help advance a high-performing engineering culture through close collaboration and technical partnership with the broader engineering team.
Troubleshoot technical issues across multiple services, applications, systems, and teams as they arise.

Requirements

BS or MS degree in Computer Science, Software Engineering, Electrical Engineering, Bioengineering, or a related technical field involving algorithms or coding.
5+ years of software engineering experience designing, developing, and maintaining full-stack solutions in a production environment.
3+ years of experience implementing production software using TypeScript.
Strong TypeScript and Node.js engineering experience, including building and maintaining substantial TypeScript services in production.
Experience designing and operating microservices-based systems with understanding of service boundaries, contract evolution, error handling, and observability.
Production experience with Kafka or a comparable event-streaming platform; Confluent experience is a plus.
Experience designing PostgreSQL database schemas, including transactions, indexing, and migration strategy.
Hands-on experience with distributed cloud-based systems using Docker, Kubernetes, Kafka, GraphQL, and AWS or equivalent cloud platforms.
Experience operating services in AWS or similar environments, including EKS, RDS, S3, CloudWatch, and IAM.
Experience with unit testing frameworks such as Jest, Vitest, or similar.
Hands-on experience with end-to-end testing frameworks such as Playwright, Cypress, Selenium, or similar.
Strong test design skills and the ability to translate acceptance criteria or user stories into unit, integration, and end-to-end test coverage.
Hands-on experience with modern AI tools such as Claude, Cursor, or similar.
Familiarity with requirements management tools such as JAMA.
Experience in life sciences or healthcare, especially next-generation sequencing, diagnostic laboratories, or regulated environments, is highly desirable.
Strong commitment to engineering quality, including testability, maintainability, and reliability.
Strong written communication skills for design documents, PR descriptions, test cases, and technical documentation.
Ability to operate effectively in ambiguous situations by asking clarifying questions, identifying assumptions, and defining practical solutions.

Benefits

Temporary/contract position up to 6 months.
Hybrid work in Redwood City, CA or remote work anywhere in the USA.
Hourly pay of $72 to $84 per hour.
Opportunity to work on diagnostics technology with direct impact on patient care.
Work with advanced technologies, including genomics, machine learning, cloud infrastructure, and AI-driven analytics.
No travel required.

Interested in this position?

Apply directly on the company website

Apply Now

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