Profluent
Posted 2mo ago

Machine Learning Scientist, Reinforcement Learning

Profluent
Emeryville or Hybrid (2-3 days on-site)
$200k-$330k/yrHybridFull Time
Responsibilities
  • design algorithms
  • collaborate teams
  • architect infrastructure
Requirements
  • PhD or equivalent in CS/ML/NLP/Applied Math/Computational Biology/Statistics
  • Experience with ML/RL
  • Publications
  • PyTorch or Jax experience
Technical tools mentioned
PyTorchJax

Job description

Profluent is an AI-first protein design company. Founded in 2022, we develop deep generative models to design and validate novel, functional proteins to revolutionize biomedicine. Based in Emeryville, CA, we are backed by leading investors including Altimeter Capital, Bezos Expeditions, Spark Capital, Insight Partners, Air Street Capital, AIX Ventures, and Convergent Ventures, and have raised over $150M to date.

We're looking for a motivated and creative Machine Learning (ML) Scientist to drive research into reinforcement learning for biomolecular design. This position offers an opportunity to work at the forefront of generative modeling research across language processing, representation learning, and protein engineering. You should be a self-directed researcher who has the ability to rapidly prototype and evaluate new models and algorithms in the biomolecular domain.

As an early employee, you will proactively shape the direction of our machine learning efforts and collaborate across diverse teams of computational and experimental scientists.

Responsibilities

  • Design and develop state-of-the-art online and offline reinforcement learning algorithms for protein design
  • Collaborate across the machine learning and protein design teams to adapt and improve reinforcement learning techniques from other domains to protein design
  • Architect, implement, and optimize core infrastructure to support the post-training of protein language models
  • Curate relevant datasets and design tasks for rigorous evaluation of generative models
  • Implement, analyze, and interpret multiple computational approaches and present results to colleagues in regular update meetings
  • Work within a collaborative, fast-paced, interdisciplinary team across biology and machine learning to help shape the scientific and strategic vision of the company

Qualifications

  • PhD (or equivalent industry experience) in Computer Science, Machine Learning, Natural Language Processing, Applied Math, Computational Biology, Statistics, or a related field
  • Experience with conceiving of, implementing, and evaluating novel machine learning and reinforcement learning techniques
  • Publications at major machine learning conferences (NeurIPS, ICML, ICLR) or scientific journals (Nature, Science, Nature Biotech, Nature Methods, PNAS)
  • Experience with modern deep learning frameworks such as Pytorch or Jax

Preferences (but not required)

  • Familiarity with foundational biology of proteins and nucleic acids
  • Experience developing machine learning models for proteins (language models, structure prediction, design)
  • Experience with cloud compute platforms (GCP, AWS, Azure, OCI)
  • Previous experience in data extraction and curation from bioinformatics data sources
  • Familiarity with wet lab experimental assays and associated limitations

What We Offer

  • High-growth opportunity with meaningful impact on the future of protein design
  • Competitive compensation package with equity participation
  • 401(k) with a strong employer match
  • Comprehensive benefits including health/dental/vision insurance
  • Generous PTO policy and commitment to work-life balance
  • Professional development opportunities in a cutting-edge field at the intersection of AI and biology

Profluent Bio, Inc is an equal opportunity employer promoting diversity and inclusion in the workspace. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical conditions, veteran status, sexual orientation, gender (including gender identity and gender expression), sex (which includes pregnancy, childbirth, and breastfeeding), genetic information, taking or requesting statutorily protected leave, or any other basis protected by law.

Employment Eligibility Verification

Legal authorization to work in the United States is required. In compliance with federal law, all persons hired must verify their identity and work eligibility and complete the required employment verification form upon hire.

Hiring Salary Range
$200,000$330,000 USD

About Profluent

Designs functional proteins using deep generative AI models.

Year founded
2022
Employees
51
Organization type
Private
Latest investment
Raised $106.00M Series B (2025) — led by Altimeter Capital, Bezos Expeditions
Headquarters
US

Similar jobs

Machine Learning Scientist roles near Emeryville, California
2d
Save
Mark Applied
Hide
Staff Machine Learning Scientist, Applied Causal Inference
San Francisco or Sunnyvale or Los Angeles or Seattle or New York City
$204k-$299k/yr OnsiteFull Time
DoorDash
DoorDashNASDAQ: DASH: On-demand delivery platform connecting consumers with local merchants.
Requires deep practical causal inference, econometrics, experimentation, or causal ML experience; production ML engineering; rigorous model evaluation; and cross-functional product and marketplace decision-making skills.
CUPED, Covey, Covey Scout for Inbound
2d
Save
Mark Applied
Hide
Senior Machine Learning Scientist, Protein ML, AI for Drug Discovery (AIDD)
South San Francisco, California, United States
$167k-$311k/yr OnsiteFull Time
Roche
RocheSIX Swiss Exchange: ROG: Provides innovative pharmaceutical and diagnostic healthcare solutions.
3+ YOEBS, MS, or PhD in a physical science or quantitative field, large-dataset experience, first-author publication, GitHub portfolio, strong communication, and Python deep-learning framework experience.
Python, PyTorch, GitHub, NeurIPS, ICLR, ICML
2d
Save
Mark Applied
Hide
Machine Learning Scientist 5 - Localization
New York City or Los Gatos
OnsiteFull Time
Netflix
NetflixNASDAQ: NFLX: Provider of global streaming entertainment and video content.
4+ YOE4+ years applying causal inference and machine learning; proficiency in R, Python, SQL, causal inference, supervised learning, and LLM evaluation; strong communication, collaboration, business acumen, and independent judgment.
R, Python, SQL, Machine Learning, Causal Inference, Supervised Learning, LLM Evaluation
1w
Save
Mark Applied
Hide
Senior Machine Learning Scientist - Ad Campaign Optimization
Cupertino, California, United States
OnsiteFull Time
Apple
AppleNASDAQ: AAPL: Designs and sells consumer electronics, software, and online services.
Experience developing and implementing machine learning or optimization algorithms, ideally in advertising, recommendations, or search relevance; strong understanding of scalable architectures and Agile environments.
2w
Save
Mark Applied
Hide
Principal, Machine Learning Scientist
San Mateo, California, United States
$254k-$290k/yr RemoteFull Time
BigHat Biosciences
BigHat Biosciences: Develops antibody therapies using artificial intelligence and synthetic biology.
5+ YOEPhD in ML/CS or hard sciences with 5+ years post-PhD experience, strong ML research record, Python/PyTorch proficiency, biomedical domain knowledge, and leadership/mentorship experience.
Python, PyTorch, LIMS++, git, Next-Generation Sequencing (NGS), AWS
2w
Save
Mark Applied
Hide
Scientist II / Senior ML Scientist, Data-Efficient Learning for Drug Discovery
Cambridge or London or San Francisco
$228k-$358k/yr OnsiteFull Time
Lila Sciences
Lila Sciences: Develops an AI platform for autonomous scientific research and discovery.
PhD or equivalent experience in ML or related field; strong experience training models in low-data regimes; expertise in active learning, meta-learning, uncertainty estimation; collaboration with experimental teams.
PyTorch, JAX, scikit-learn
2w
Save
Mark Applied
Hide
(General Hire) Machine Learning Scientist Graduate (TikTok Recommendation) - 2027 Start (PhD)
San Jose, California, United States
$156k-$388k/yr OnsiteFull Time
TikTok
TikTok: Global short-form video hosting and social media platform.
PhD in computer science or related field; strong research background; experience with deep learning frameworks and production ML; proficiency in C/C++, Python and shell; strong publication or internship experience preferred.
PyTorch, TensorFlow, C, C++, Python, shell
2w
Save
Mark Applied
Hide
Principal Machine Learning Scientist - Agentic Experiences
Seattle or San Jose
$224k-$339k/yr OnsiteFull Time
Expedia Group
Expedia GroupNASDAQ: EXPE: Operates a global platform for travel bookings and services.
10+ YOEBS or equivalent,10+ years industry experience, proven experience building agentic/multi-step AI systems, strong Python and ML framework skills, experience with LLM APIs and orchestration, evaluation and productionization experience.
Python, PyTorch, TensorFlow, JAX, LLM APIs, LangChain, LlamaIndex