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Wuxi Apptec · Germany

# Senior Scientist - Screening Specialist (m/f/d)

Germany Senior individual contributor Research & Science 

Listed on Wuxi Apptec’s official careers site. Posted October 9, 2026. Check that it is still open and apply there.
[Apply on Wuxi Apptec’s careers site →](https://www.wuxiappteccareers.com/job/352/senior-scientist-screening-specialist-m-f-d-research-scientist-de/)

[OpenNash Jobs](https://jobs.opennash.com/) / [Wuxi Apptec](https://jobs.opennash.com/companies/wuxi-apptec/) / Senior Scientist - Screening Specialist (m/f/d)

## Job description

We are looking for a Senior Scientist with deep expertise in peptide chemistry and chemical biology to help shape and deliver our mRNA display & DNA encoded libraries (DEL) services for external clients. You will work independently on peptide and small molecule discovery projects, refine and work on internal Research & Development. This is a hands-on, scientifically demanding role at the interface of chemistry, molecular biology and client delivery.

You will work with a collaborative team of scientists, contribute to platform innovation, and work closely with external partners.
- Design, run and analyze mRNA display selections of cyclic peptide libraries against diverse targets
- Maintain, optimize and extend the mRNA display platform, including library design, translation, cyclisation and selection workflows
- Handle and quality-control nucleic acids (mRNA, DNA, cDNA), including library preparation, PCR/RT-PCR and next-generation sequencing readouts
- Develop, validate and transfer assays for hit identification and confirmation
- Contribute to project planning, timelines and documentation
- Keep abreast of new developments in display technologies and cyclic peptide therapeutics, and propose improvements to our offering
- Contribute to peptide and small-molecule DEL screening projects, including library screening, hit identification and data analysis PhD in chemistry, chemical biology, biochemistry or equivalent experience
- Proven experience in mRNA display, including screening of cyclic peptide libraries and platform manipulation
- Strong practical skills in nucleic acid handling (mRNA/DNA work, PCR, library construction, sequencing analysis) Experience developing and optimizing assays for hit identification and validation
- Excellent written and spoken English Additional Skills: Experience in In Vitro peptide macrocyclization, bioconjugation & genetic code reprogramming Biophysical assays for binding and affinity (e.g.

SPR, BLI, ITC, FP) Peptide characterization by LC-MS, HPLC and related analytical methods Industry experience in a biotech, pharmaceutical or contract research / service environment, with an understanding of timelines, quality expectations and client delivery Experience with DNA encoded libraries

## At a glance
- Posted by the employer: Oct 9, 2026
- First seen by OpenNash: Oct 11, 2026
- Last checked: Oct 11, 2026
- Listed for: 2 days
- Location: Germany[Apply on Wuxi Apptec’s careers site →](https://www.wuxiappteccareers.com/job/352/senior-scientist-screening-specialist-m-f-d-research-scientist-de/)

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