Staff Scientist II, Target Discovery, Screening, and Automation

Protagonist Therapeutics Inc.

Posted on: May 31, 2026

Closing: June 30, 2026

Salary: Undisclosed

Job Description

Staff Scientist II, Target Discovery, Screening, and Automation

Location: Newark, California

The Role

We are seeking an innovative, experienced, and collaborative individual to join the new Screening and Automation team in the Biology and Translational Science Unit in Drug Discovery at Protagonist Therapeutics. We are looking for a skilled Bioinformatician to play a crucial role at the intersection of high-throughput biology and computational data science.

In this dynamic role, you will help scale functional screening assays and build automated data pipelines utilizing big data and Large Language Models (LLMs). Furthermore, you will play a key role in the early-stage pipeline by expanding the company's bioinformatic capabilities key for integrating complex screening outputs, accessing and leveraging relevant human datasets to drive new target discovery, accelerate hit identification, and validate target mechanisms for immunologic, hematologic, and metabolic diseases.

This position will report to the Director of Screening and Automation and work with teams across R&D in the U.S. and Australia.

Responsibilities

Category

Description

Team Leadership

Mentor scientists and technicians and foster a collaborative and innovative team environment.

Automation & Assay Scaling

Collaborate with the department head to implement big data architectures that seamlessly capture, process, and QC data from scaled functional assays.

High-Throughput Screening

Analyze and interpret high-throughput screening campaigns. Ensure the quality and reliability of screening data.

Hit Identification

Build and execute computational workflows to analyze primary and secondary high-throughput screening (HTS) data, accelerating hit identification and the triage of peptide candidates.

Assay Development

Work with biology to adapt and scale of cell-based and biochemical assays for automated platforms, including target engagement assays.

Cross-Functional Collaboration

Work closely other teams in Discovery to support their bioinformatic needs.

AI & LLM Utilization

Apply predictive modeling, machine learning, and Large Language Models (LLMs) to extract meaningful insights from diverse biological data streams and automate complex data interpretations

New Target Discovery

Leverage large-scale human multi-omics data (genomics, transcriptomics) and clinical datasets to identify, analyze, and prioritize novel therapeutic targets in immunology and metabolic diseases.

Qualifications

Category

Description

Education

A Ph.D. in a relevant field such as biology, bioinformatics, computational biology, or engineering is required.

Experience

A minimum of 2 years of experience in the pharmaceutical or biotechnology industry.

Technical Skills

Hands-on experience analyzing high-throughput screening (HTS) data, functional assays, and utilizing human genetic/genomic data for target discover.

Strong programming skills in Python and R. Experience with relational databases (SQL) and big data computing environments (AWS, cloud computing)

Foundational experience applying machine learning or NLP/LLM techniques to biological data challenges

Behaviors

Self-starter mentality with a knack for identifying bottlenecks in data pipelines and proactively proposing innovative, scalable solutions.

Ability to thrive in a cross-functional matrix, working seamlessly with bench biologists, automation engineers, and medicinal chemists.

Communication

Excellent ability to distill complex computational data and algorithmic concepts into clear, actionable insights for non-computational stakeholders

Preferred Qualifications

Category

Description

Adaptability

High level of agility and comfort working in a fast-paced, newly formed team environment where processes are actively being built and refined

Data Management

Familiarity with Laboratory Information Management Systems (LIMS) and large-scale data management.

Innovation

A demonstrated track record of implementing novel automation platforms and workflows that have significantly impacted drug discovery programs.

experience

Familiarity with relevant disease areas (e.g., metabolic syndrome, autoimmunity, allergy, hematology) or biology themes (e.g., immunology, energy expenditure, platelet function)

The base pay range for this position at commencement of employment is expected to be between $135,000 and $145,000/year; however, base pay offered may vary depending on multiple individualized factors, including market location, job-related knowledge, skills, and experience.

Protagonist Therapeutics is a discovery through late-stage development biopharmaceutical company. The Company's proprietary peptide technology platform enables de novo discovery of peptide therapeutics. Two novel peptides derived from Protagonist's proprietary discovery platform are at or near commercialization. ICOTYDE™ (icotrokinra) is approved in the U.S. for the treatment of moderate-to-severe plaque psoriasis in adults and pediatric patients 12 years of age and older who weigh at least 40 kg who are candidates for systemic therapy or phototherapy. ICOTYDE is the first and only targeted oral peptide that precisely blocks the Interleukin-23 receptor (IL-23R) licensed to Janssen Biotech, Inc.,a Johnson & Johnson company. ICOTYDE was jointly discovered by Protagonist and Johnson & Johnson scientists, with Protagonist having primary responsibility for the development of ICOTYDE through Phase 1, and Johnson & Johnson assuming responsibility for further development and commercialization. An NDA for rusfertide, a first-in-class hepcidin mimetic peptide that is being co-developed with Takeda Pharmaceuticals pursuant to a worldwide license and collaboration agreement entered in 2024, is under priority review with the FDA. Protagonist holds an option to co-commercialize rusfertide in the U.S. through a 50/50 profit and loss share structure or can opt-out of this structure. The Company also has a number of preclinical stage drug discovery programs addressing clinically and commercially validated targets including an oral IL-17 peptide antagonist, obesity dual and triple agonists, an oral hepcidin functional mimetic, and the recently announced IL-4 and amylin programs.

More information on Protagonist, its pipeline drug candidates, and clinical studies can be found on the Company's website at https://www.protagonist-inc.com.

Protagonist Therapeutics Inc.

Posted on: May 31, 2026

Closing: June 30, 2026

Salary: Undisclosed

Career Focus: Scientist

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