Twist Bioscience

Twist Bioscience

Sr Manager Protein Sciences

USA - South San Francisco, CA · Senior

Sponsorship not specified$189k-$224kDetected 23 days ago
PythonBioinformaticsCell Culture

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odds of building a lasting career here

59Sponsors, lottery-bound
Cap-exempt (no lottery)0
Sponsors this role80
Entry-level history0
PERM / green-card track0
Lottery odds (Level IV)94
Fits your clock70

Sponsors, but it's cap-subject — you still face the weighted lottery (~61% per draw at Level IV). Good if you win; have a cap-exempt backup on your list.

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Employer immigration record

from this employer's Department of Labor filings

Green-card filing pattern in this occupation

Context, not a finding about this posting: of this employer's 3 green-card filings in this occupation, 100% were for a worker who already held the job.

Files H-1B transfers

4 transfer filings in the last year, covering 4 workers. Median labor-condition decision: 7 days. An employer that already files transfers is one that can take over an existing H-1B.

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About the role

  • Twist Bioscience Corporation is an Equal Opportunity Employer.
  • San Francisco Bay Area Pay Range $189,000 - $224,000 USD

Responsibilities

  • Develop small- and medium-scale antibody production workflows, including various formats (single-chain, IgG, multi-specific), culture systems, and purification methods
  • Improve all aspects of the end-to-end antibody development workflow: construct design, cell line development, cell culture, purification, and analytics
  • Build from the ground up and manage a team of scientists and RAs that will aid you in your work
  • Independently design and execute experiments, and analyze experimental data
  • Move projects forward efficiently / manage time and resources effectively / prioritize tasks in accordance with the company's goals
  • Document and communicate results clearly and succinctly
  • Vector design, promoter/selection strategies
  • Demonstrated ability to build, improve, and standardize antibody generation workflows, not just execute existing SOPs.
  • Experience developing high-throughput or semi-automated workflows for expression, purification, and screening.
  • Experience designing platforms that support multiple antibody modalities (mAbs, bispecifics, Fc-engineered variants)

Requirements

  • 5+ years of experience in protein sciences
  • 5 years of management experience
  • Just as children learn to both read and write, the next phase of development for the genomics revolution is the ability to write DNA.
  • Proven experience with bispecific antibody architectures, including but not limited to:
  • Hands-on experience with antibody characterization methods, such as:
  • PhD in Cell Biology, Biochemistry, or a closely related field
  • Hands-on experience working with antibody expression and purification
  • Familiarity with Python or equivalent programming languages is a plus

Nice to have

  • Clone screening, productivity optimization, and stability assessment
  • Strong understanding of transient vs stable expression tradeoffs and when to deploy each during platform development.
  • Experience improving expression yields and product quality through sequence, vector, and host engineering.
  • Strong understanding of platform robustness, reproducibility, and cost drivers.
  • Binding kinetics (BLI or SPR)
  • Basic biophysical profiling (DSF, DLS)
  • Strong mechanistic understanding of antibody biology, structure, and expression bottlenecks
  • A track record of successful and creative method development

Compensation

  • San Francisco Bay Area Pay Range

Company info

  • Deep hands-on experience designing, expressing, and optimizing monoclonal antibodies, with demonstrated understanding of Fc structure-function relationships (effector function, stability, manufacturability).
  • Knob-in-hole, CrossMab, common light chain, or similar
  • Chain pairing control and mispairing mitigation

This listing is sourced directly from Twist Bioscience's careers page and normalized into a canonical job model.