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Senior Software Engineer

Xcell Biosciences
San Francisco, CA
Start date
Sep 15, 2022

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Engineering, Software Engineer
Required Education
Masters Degree/MBA
Position Type
Full time
Biotech Bay
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Job Details

Xcellbio is an immuno-oncology focused technology startup based in San Francisco. Our company has had success in raising multiple rounds of financing from some of the top venture capital names in the industry. Our mission is to enhance the performance and safety of cell and gene therapies (CGT) through the design and development of a suite of innovative technologies. Our commercial instruments and AI-driven software enable researchers to discover novel insights into immune and tumor biology. Our product development team is working to translate these insights at patient-scale, through the development of a new cell therapy manufacturing technology. This high growth team will be expanding several folds over the next few years - now is a great time to join!

Brief Description of Position:

We are looking for a senior software engineer to lead our desktop, mobile and web C# development. Strong full stack desktop application in C# with hands on skills a must. The candidate would improve on current existing software architectures, performance, and user experience.

Key Responsibilities:

  • Drive the software development effort, develop new and improve existing software applications. Our software applications control, monitor, collect data and analyze sensor readings, requiring strong overall engineering knowledge.
  • Works with internal biology RND team and external customers to provide software engineering adjustments to current and future products as needed
  • Feature and bug tracking experience

Education, Experience, and Skill Requirements:

  • Graduate Degree (Ph.D./M.S.) preferred, in a work-related field/discipline from an accredited college or university (computer science, bioinformatics, bioengineering, mathematics, molecular biology, biochemistry, or equivalent)
  • Six plus years C# WinForms development experience are required, WPF a plus
  • Familiarity with the latest Microsoft cross platform technologies (.Net Maui, .Net Blazor, etc.)
  • VisualStudio and git source control are required
  • Object-oriented software development required, design patterns a plus
  • Instrument control software development a plus
  • Biotech software development a plus.
  • C++, Python development a plus
  • Signal processing, regression, machine learning experience, curve fitting, noise reduction, statistics, Machine learning theories and practical tools, such as Tensor Flow, a plus

Other Desirable Characteristics and Attributes:

  • Highly motivated self-starter who can prioritize and take ownership of tasks
  • Excited to be “hands-on” in solving product problems
  • Must be comfortable in a rapidly growing and evolving start-up environment
  • Please note if you are legally authorized to work in the United States in your application


Xcell Bio is a San Francisco-based life science company dedicated to bringing an innovative primary cell control solution to the immunotherapy market to support research, drug discovery, and cell manufacturing. Xcell’s mission is to democratize maintenance, expansion and control of any primary cell type through its bench-top primary cell control systems, reagent kits, software, and standardized protocols. The technology delivers simple control of primary cell types from blood or solid tissue, including a range of immune cells, stem cells, and tumor cells. This patient-centric technology offers a unique and proprietary capability to improve immunotherapy efficacy, safety, and persistence through more predictive and iterative therapy development and rapid, highly-controlled clinical cell manufacturing. For more information, please visit

Find Us
455 Mission Bay Boulevard
South San Francisco
United States
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