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SandboxAQ

Machine Learning Research Scientist, Postdoctoral Fellow

Job Summary

This role involves applying advanced machine learning techniques to cybersecurity research, including building and fine-tuning models, performing data analysis, and integrating findings into products. The candidate should have a PhD in a related field with experience in Python and ML frameworks. Collaboration with cross-disciplinary teams such as cryptographers and physicists is key. The position offers opportunities for professional growth, competitive compensation, and benefits supporting work-life balance and development.

Required Skills

Python
Machine Learning
Data Analysis
Research
Model Fine-tuning
Data Science
Software Development
Deep Learning
Cryptography
Cybersecurity
ML Frameworks
Open Source
Transformers
Model Building
Inference

Benefits

Paid Time Off
Stock Options
Competitive Salary
Bonuses
Learning opportunities
Financial Wellness Resources
Medical/Dental/Vision Insurance
Retirement Plans (401(k))
Family Planning and Fertility Support

Job Description

About SandboxAQ

SandboxAQ is a high-growth company delivering AI solutions that address some of the world's greatest challenges. The company’s Large Quantitative Models (LQMs) power advances in life sciences, financial services, navigation, cybersecurity, and other sectors.

We are a global team that is tech-focused and includes experts in AI, chemistry, cybersecurity, physics, mathematics, medicine, engineering, and other specialties. The company emerged from Alphabet Inc. as an independent, growth capital-backed company in 2022, funded by leading investors and supported by a braintrust of industry leaders.

At SandboxAQ, we’ve cultivated an environment that encourages creativity, collaboration, and impact. By investing deeply in our people, we’re building a thriving, global workforce poised to tackle the world's epic challenges. Join us to advance your career in pursuit of an inspiring mission, in a community of like-minded people who value entrepreneurialism, ownership, and transformative impact.

About the Role

The SandboxAQ R&D team is looking for a PostDoc resident to help us bring more AI to the domain of cybersecurity. We are interested in candidates with a strong theoretical background and interest in frontier research, who can apply those foundations and implement them in practice.

A successful candidate will be comfortable building models from scratch, fine tuning existing ones, and running inference efficiently (both generative and quantitative). They will be able to design software systems around those models in close collaboration with our engineering department.

They will be part of a diverse team consisting of ML experts, cryptographers, mathematicians, and physicists, where they will play a key role in efficient and effective enablement of the cutting-edge technologies being developed at SandboxAQ.

What You'll Do

  • Perform exploratory data analysis and feature engineering on vast quantities of data
  • Train models and build agents using the latest ML frameworks
  • Work with the engineering team to integrate research outcomes into the product portfolio
  • Present the work to broad audiences from academic to industry

About You

  • PhD in Machine Learning, Data Science, Computer Science or related field with a strong focus on Machine Learning
  • Strong experience in Python, and ML frameworks such as Huggingface Transformers, LangChain, Tensorflow or PyTorch
  • Successful research track record in the field of ML

Nice to Have

  • Experience with agentic frameworks such as OpenAI agents, Google ADK, or MCP
  • Experience contributing to open source projects
  • Experience in the cybersecurity domain is a plus, but not essential

The US base salary range for this full-time position is expected to be $115k - $135k per year. Our salary ranges are determined by role and level. Within the range, individual pay is determined by factors including job-related skills, experience, and relevant education or training. This role may be eligible for annual discretionary bonuses and equity.

SandboxAQ welcomes all.

We are committed to creating an inclusive culture where we have zero tolerance for discrimination. We invest in our employees' personal and professional growth. Once you work with us, you can’t go back to normalcy because great breakthroughs come from great teams and we are the best in AI and quantum technology.
We offer competitive salaries, stock options depending on employment type, generous learning opportunities, medical/dental/vision, family planning/fertility, PTO (summer and winter breaks), financial wellness resources, 401(k) plans, and more.
Equal Employment Opportunity: All qualified applicants will receive consideration regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status.
Accommodations: We provide reasonable accommodations for individuals with disabilities in job application procedures for open roles. If you need such an accommodation, please let a member of our Recruiting team know.

Interested in this job?

Application deadline: Open until filled

Logo of SandboxAQ

SandboxAQ

SandboxAQ leverages the compound effects of AI and advanced computing to address some of the biggest challenges impacting society. SandboxAQ technologies include AI simulation, cryptography management for cybersecurity, and AI sensing for global organizations.

See more jobs
Date PostedAugust 16th, 2025
Job TypeFull Time
LocationRemote, USA; Remote, Canada; Remote, Europe
Salary$115,000 - $135,000
Exciting remote opportunity (requires residency in Canada, United States) for a Machine Learning Research Scientist, Postdoctoral Fellow at SandboxAQ. Offering $115,000 - $135,000 (full time). Explore more remote jobs on FlexHired!

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