Senior Applied AI Research Scientist
At a glance
Senior AI Research role at Sardine. Remote, United States · full-time · no salary stated · we estimate $160,550–$249,500 across the United States.
Sardine has not published a salary for this role. The figure below is our estimate, not theirs.
aimlroles summary, based on the employer's posting.
What you'll do
- Find and scope research opportunities, test ideas rigorously, then move foundation model development along its roadmap
- Judge model quality with time- and entity-aware tests, calibration, drift checks and comparisons against strong traditional models
- Take models from data preparation and tokenization through training, tuning, compression and real-time use under tight latency limits
- Work with engineering on training systems, GPU efficiency, feature and embedding stores, and serving models at production scale
- Help customers and client teams apply model capabilities, and build explainability and governance materials with legal and compliance partners
What you bring
- At least four years in applied ML, quantitative modeling or ML engineering, including a foundation model adapted or pretrained for real traffic
- Practical self-supervised pretraining experience, along with hands-on model tuning and adaptation
- Production experience with model serving, version control, monitoring and rollback
- Strong Python and SQL skills, plus experience preparing very large datasets
Who this fits
This senior research role suits someone who can steer ambiguous applied projects and communicate across technical teams and external partners. The role is remote in the United States or Canada, and requires you to keep a home base in your country of hire.
From the employer
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 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.
We're a remote-first team spread across time zones, so no office to report to - work from wherever helps you do your best work. Just a couple of things to keep in mind: pay is based on where you're located, and you'll need to keep a home base in the country you're hired in. So while we love the "coffee shop today, mountains tomorrow" life, this isn't a passport-optional, work-from-anywhere-on-Earth kind of remote - think flexible within your country, not borderless.
Location:
Remote -United States or Canada
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.
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