Tessera Therapeutics

QA Engineer

Cambridge, MA US
FastAPI React API
Description

FL100, Inc. is a privately held, early-stage company pioneering the use of artificial intelligence-based agents to build an integrated, end-to-end platform for AI-driven product innovation. FL100 has created intelligent and reliable AI agent-powered workflows for emergent product innovation. Emergent product innovation leads to new products with breakthrough market adoption that generate new sources of value by solving for large unmet consumer needs and creating demand that did not exist previously.

We're leveraging multi-agent systems to accelerate growth, speed up product design innovation, and automate e-commerce operations. Currently, we offer an app on a major e-commerce platform that demonstrates our capabilities, with plans to expand across various other platforms and online marketplaces.

FL100 is backed by Flagship Pioneering, an innovation enterprise that conceives, creates, resources, and builds companies that invent breakthrough technologies to transform health care, agriculture, and sustainability. Flagship has created over 100 groundbreaking companies since 2000, including Moderna.

About the Role

We are looking for a QA Engineer who can thoroughly test and validate our FastAPI backend and React frontend to ensure a seamless user experience. The ideal candidate should have a strong understanding of both codebases, be able to write automated tests, and perform manual testing when needed. You will work closely with developers to identify bugs, improve test coverage, and maintain the overall quality of our application.

Key Responsibilities

  • Review and understand both FastAPI backend and React frontend to design effective test strategies
  • Develop and maintain automated tests for API endpoints, UI components, and end-to-end workflows
  • Perform manual testing to identify edge cases, usability issues, and regressions
  • Write and execute integration, functional, and performance tests
  • Collaborate with developers to debug issues and improve application reliability
  • Implement and manage CI/CD testing pipelines to automate test execution
  • Ensure comprehensive test coverage and maintain test documentation
  • Conduct load and performance testing to validate backend efficiency under high traffic
  • Stay up to date with best practices in automated testing frameworks and QA methodologies

Required Skills & Experience

  • 4+ years of experience in QA testing for both frontend and backend applications
  • Strong understanding of FastAPI (or similar backend frameworks) and React
  • Experience with automated testing tools such as Pytest, Selenium, Playwright, or Cypress
  • Proficiency in writing API tests, UI tests, and end-to-end tests
  • Familiarity with CI/CD pipelines and integrating automated tests into deployment workflows
  • Knowledge of REST APIs, WebSockets, and database interactions
  • Experience with performance testing tools like JMeter or Locust is a plus
  • Strong problem-solving skills and attention to detail
  • Ability to work independently and collaborate effectively with the development team

Values and Behaviors

  • Constant Learner: Seeks out emerging QA focused trends and harnesses them for practical impact.
  • Customer-Obsessed: Designs solutions that deliver real value to users, keeping the customer’s needs at the forefront.
  • Mission-Oriented: Committed to bringing breakthrough AI technologies to market.
  • Entrepreneurial Spirit: Embraces ambiguity and drives innovative solutions independently.
  • Works with Velocity & Urgency: Efficiently tackles challenges with a results-driven approach.
  • Collaborative: Partners effectively with cross-functional teams and stakeholders.
  • Accountable: Maintains ownership of initiatives and delivers on commitments.
  • Growth Mindset: Views experimentation and iteration as opportunities for improvement.
  • Innovative: Thinks outside the box to advance AI-driven product innovation.

More About Flagship Pioneering

Flagship Pioneering is a bioplatform innovation company that invents and builds platform companies, each with the potential for multiple products that transform human health or sustainability. Since its launch in 2000, Flagship has originated and fostered more than 100 scientific ventures, resulting in more than $90 billion in aggregate value. Many of the companies Flagship has founded have addressed humanity’s most urgent challenges: vaccinating billions of people against COVID-19, curing intractable diseases, improving human health, preempting illness, and feeding the world by improving the resiliency and sustainability of agriculture.  Flagship has been recognized twice on FORTUNE’s “Change the World” list, an annual ranking of companies that have made a positive social and environmental impact through activities that are part of their core business strategies, and has been twice named to Fast Company’s annual list of the World’s Most Innovative Companies. Learn more about Flagship at www.flagshippioneering.com.

Flagship Pioneering and our ecosystem companies are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status.

At Flagship, we recognize there is no perfect candidate. If you have some of the experience listed above but not all, please apply anyway. Experience comes in many forms, skills are transferable, and passion goes a long way. We are dedicated to building diverse and inclusive teams and look forward to learning more about your unique background.

Recruitment & Staffing Agencies: Flagship Pioneering and its affiliated Flagship Lab companies (collectively, “FSP”) do not accept unsolicited resumes from any source other than candidates. The submission of unsolicited resumes by recruitment or staffing agencies to FSP or its employees is strictly prohibited unless contacted directly by Flagship Pioneering’s internal Talent Acquisition team. Any resume submitted by an agency in the absence of a signed agreement will automatically become the property of FSP, and FSP will not owe any referral or other fees with respect thereto.

Tessera Therapeutics
Tessera Therapeutics
Biopharma Biotechnology Genetics Life Science Therapeutics

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