Senior Scientist, Protein Engineering
Flagship Pioneering, Inc. · Cambridge, MA USA
Posted 8 days ago · $126,000 - $181,500
or apply directly on Flagship Pioneering, Inc.'s site. We never take the application ourselves.
Is this posting real?
- This role has been open
- 8 days Flagship Pioneering, Inc.'s roles stay open a median of 45 days
- Reposted
- No
- Salary listed
- Yes 89% of Flagship Pioneering, Inc.'s roles list one
- Ghost-job risk at Flagship Pioneering, Inc.
- high 50 stale, 1 reposted of 100 open
- Hiring momentum
- 144 roles opened in the last 90 days ↑ up vs. the prior 90 days
- Last confirmed on the employer's board
- 2026-09-17
Measured from postings appearing on and disappearing from Flagship Pioneering, Inc.'s own greenhouse board since 2026-08-03. Full hiring picture for Flagship Pioneering, Inc..
About this role
As a Senior Scientist at FL129, you will play a key role in developing a novel platform technology for small molecule drug discovery. Your responsibilities will include designing and constructing large-scale protein variant libraries, optimizing workflows, and translating experimental data into insights. This hands-on position offers substantial ownership and the opportunity to influence the scientific direction of the company from the outset.
- benefits
- 3/5
- freshness
- 5/5
- career value
- 5/5
- role clarity
- 4/5
- pay transparency
- 5/5
Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Flagship Pioneering, Inc. as an employer.
What you need
- Ph.D. in molecular biology, biochemistry, protein engineering, or a similar field
- 5+ years of industry or postdoctoral experience
- Strong track record of scientific and technical innovation in protein variant libraries
- Deep experience with protein display systems, high-throughput sorting, and sequencing-based readouts
- Experience with deep mutational scanning or related library-scale mutagenesis methods
- Hands-on expertise in library-scale molecular cloning and managing library complexity
Nice to have
- Experience with machine learning methods for protein engineering
- Experience with statistical analysis of variant fitness landscapes
What you get
- Healthcare coverage
- Annual incentive program
- Retirement benefits
- Weekly lunches
- Monthly social events
- Community lunchroom with free snacks and coffee
Worth weighing
- No specific technologies or tools mentioned, which may affect clarity on the tech stack
- Role is among the first hires, indicating a startup environment with potential uncertainty
Summarised from Flagship Pioneering, Inc.'s posting. Read the full original.
Listed by Flagship Pioneering, Inc. on their greenhouse job board, last confirmed open on 2026-09-17. PitchMeAI is not the employer.
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