Who we are:
Sardine is the leading agentic risk platform for fighting financial crime. Our integrated solution unifies data across risk teams to help organizations stop fraud in real time, prevent AI-driven attacks, and automate fraud and AML operations. Sardine’s platform is strengthened by one of the fastest-growing fraud consortiums in the market, spanning more than 6 billion profiled devices, 800 million consumers, and 3 million businesses worldwide. Leading companies including FIS, GoDaddy, Intuit, Edward Jones, ZoomInfo, and Checkout.com rely on Sardine to secure and grow trust in their products.
Our culture:
We have hubs in the Bay Area, NYC, Austin, Toronto, and São Paulo. However, we maintain a remote-first work culture. #WorkFromAnywhere
We hire talented, self-motivated individuals with extreme ownership and high growth orientation.
We value performance and not hours worked. We believe you shouldn't have to miss your family dinner, your kid's school play, friends get-together, or doctor's appointments for the sake of adhering to an arbitrary work schedule.
Location:
Remote -United States or Canada
From Home / Beach / Mountain / Cafe / Anywhere!
We are a remote-first company with a globally distributed team. So you can find your productive zone and work from there.
About the role
Sardine sits on one of the richest behavioral datasets in fraud and risk: device intelligence, behavior biometrics, session telemetry, payment events, and consortium signals that we leverage to fight fraud across hundreds of fintechs and banks. We are looking for an applied research scientist that brings their expertise in deep learning and foundation models to take this to the next level.
We are looking for an experienced ML applied scientist that can combine foundation model expertise with rich non-text sequential data to come up with practical, state-of-the-art fraud detection solutions. You will have an opportunity to scope and drive the next generation of fraud foundation models at Sardine, and drive industry-wide adoption.
What you'll be doing
Identify and scope opportunities, design rigorous experiments, and execute on the roadmap for foundation model research and development.
Own the evaluation bar for foundation model performance: offline benchmarks, time- and entity-aware holdouts, calibration, drift and degradation monitoring, and honest head-to-head comparisons against strong classical baselines.
Take models the full distance from data prep and tokenization through pretraining, fine-tuning, distillation, quantization, and deployment behind a real-time inference path with tight latency budgets.
Partner with Engineering on training infrastructure, GPU efficiency, feature and embedding stores, and serving at production scale
Work directly with client-facing teams and customers to turn model capabilities and limits into decisions their risk teams can act on.
Partner with Legal, Compliance, and customer model risk teams to build the explainability, documentation, and governance our bank and fintech customers need to satisfy their own regulators.
What you'll need
4+ years in applied machine learning, quantitative modeling, or ML engineering including at least one foundation model you pre trained or substantially adapted and put in front of real traffic
Hands-on self-supervised pre training experience, plus practical fine-tuning and adaptation
Production experience with model serving, versioning, monitoring, and rollback
Ability to self-manage and drive ambiguous applied research projects with clear communication with partner teams across data science, engineering, product, marketing and external partners
Strong Python, strong SQL, and comfort preparing very large datasets
Nice to haves
Background in fraud, AML, payments, credit, or adversarial machine learning
Experience building and evaluating LLM-based agents in production
Publications, released models, or open source contributions in representation learning or sequence modeling
Experience with model risk management and documentation in a regulated financial environment
Benefits we offer:
Generous compensation in cash and equity
Early exercise for all options, including pre-vested
Work from anywhere: Remote-first Culture
Flexible paid time off and Year-end break
Health insurance, dental, and vision coverage for employees and dependents - US and Canada specific
4% matching in 401k / RRSP - US and Canada specific
MacBook Pro delivered to your door
One-time stipend to set up a home office — desk, chair, screen, etc.
Monthly meal stipend
Monthly social meet-up stipend
Annual health and wellness stipend
Annual Learning stipend
Join a fast-growing company with world-class professionals from around the world. If you are seeking a meaningful career, you found the right place, and we would love to hear from you.
To learn more about how we process your personal information and your rights in regards to your personal information as an applicant and Sardine employee, please visit our Applicant and Worker Privacy Notice.
Skills Required
- 4+ years of experience in applied machine learning, quantitative modeling, or ML engineering
- Experience pretraining or substantially adapting at least one foundation model and deploying it to real traffic
- Hands-on self-supervised pretraining experience
- Practical fine-tuning and model adaptation experience
- Production experience with model serving, versioning, monitoring, and rollback
- Ability to independently manage ambiguous applied research projects
- Strong communication with data science, engineering, product, marketing, and external partner teams
- Strong Python skills
- Strong SQL skills
- Experience preparing very large datasets
- Background in fraud, AML, payments, credit, or adversarial machine learning
- Experience building and evaluating LLM-based agents in production
- Publications, released models, or open-source contributions in representation learning or sequence modeling
- Experience with model risk management and documentation in a regulated financial environment
What We Do
We are a leader in fraud prevention and AML compliance. Our platform uses device intelligence, behavior biometrics, machine learning, and AI to stop fraud before it happens. Today, over 300 banks, retailers, and fintechs worldwide use Sardine to stop identity fraud, payment fraud, account takeovers, and social engineering scams. We have raised $145M from world-class investors, including Andreessen Horowitz, Activant, Visa, Experian, FIS, and Google Ventures.
Why Work With Us
We are a remote-first company with a globally distributed team. We hire talented, self-motivated individuals with extreme ownership and high growth orientation. Join a fast-growing company with world-class professionals from around the world. If you are seeking a meaningful career, you found the right place, and we would love to hear from you.
