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Sardine

US or Canada

5mo ago

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Machine Learning Engineer

Sardine

United States or CanadaListed 5mo agoPosted by the employer Sep 9, 2025Listing ends Dec 28, 2026

Compensation: Unconfirmed
Location: United States or Canada
Fully remoteMore jobs: United States More jobs: Canada
Employment: Full-timeMid-level
Category: EngineeringFintech

Role skills

python go kubernetes gcp ci/cd docker machine learning mlops

Apply on jobs.ashbyhq.comExternal application — you finish on the employer's site.

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About the job

3 min read8 sections

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

As a Machine Learning Engineer at Sardine, you'll own the systems that make real-time fraud detection possible. Our data science team builds custom models for our clients, you build and run the platform they deploy onto, and the low-latency serving path those models score on. Sardine scores millions of sessions in real time from hundreds of device and behavioural signals, inside a sub-250ms budget. That constraint shapes everything: how features are computed and served, how models are deployed and rolled back, how quickly you know when something has degraded. You'll be the person who figures out why a model broke.

What you'll be doing

Build and own the model serving infrastructure, real-time inference, feature retrieval, and the latency budget that governs both
Build the deployment path our data scientists use to ship models themselves, including bring-your-own-model support for clients hosting their own
Own models in production: monitoring, drift detection, retraining, incident response, and the on-call rotation
Build and optimise the pipelines that turn raw device and behavioural signals into production-ready features
Work across Python and our Go backend to keep inference fast inside the request path
Build models yourself where it makes sense, roughly 20% of the role, and more if you want it
Champion testing, observability, security and compliance in a regulated environment

What you'll need

Experience building, not just using, model serving infrastructure.
Production ownership of ML systems: you've been paged when something broke, you found out why, and you changed something so it didn't happen again.
Strong Python, and solid software engineering fundamentals, testing, code review, CI/CD, the discipline that makes a platform other people can rely on.
Comfort with Kubernetes, containers and a major cloud (we're mostly GCP), plus infrastructure-as-code.
Enough understanding of models to debug them. You don't need to have trained one recently, but when precision drops you should know the difference between a data problem, a feature pipeline problem, and a model problem
Experience building tooling other engineers or data scientists actually use, and the judgement to know what should be self-serve and what shouldn't.

Bonus Points

Domain knowledge in fraud, risk, or cybersecurity.
Familiarity with CI/CD, Docker, Kubernetes and the modern devops framework.
Understanding of modern browser APIs and high-entropy data collection techniques.
Familiarity with leveraging frontier LLMs for automation.

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 https://www.sardine.ai/applicant-and-worker-privacy-notice.

Role signals

Equity: Offers Equity
Benefits: 401(k) match, Health insurance, Dental insurance, Vision insurance, Flexible PTO, Home office stipend, Wellness stipend, Learning budget

About Sardine

Sardine provides a risk platform to fight financial crime, offering solutions for fraud prevention, AML compliance, and real-time transaction monitoring. The pl…Based on an AI summary from sardine.ai

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