Machine Learning Engineer

Sardine; United States; Remote; Full time

Benefits offered by this job

Generous compensation in cash and equity

Flexible paid time off

Health insurance, dental, and vision coverage

401k matching

MacBook Pro provided

Home office setup stipend

Monthly meal stipend

Annual wellness stipend

Job summary

A leading fraud prevention company is looking for a Machine Learning Engineer to design systems for fraud detection. This remote role involves building and optimizing data pipelines, deploying ML models, and collaborating with software engineers to ensure efficient operation. Ideal candidates will have over 5 years of software engineering experience with backend focus, strong SQL skills, and a background in machine learning with large datasets. Join a dynamic team that values flexibility and independence in work.

Qualifications

• 5+ years in software engineering with strong backend experience.
• Hands-on experience with applied ML using large datasets.
• Strong SQL skills with relational and non-relational databases.

Responsibilities

• Build and optimize data pipelines to process device and behavioral data.
• Develop and deploy ML models for fraud detection.
• Collaborate with engineers to integrate models seamlessly.

Skills

Software engineering

ML with large datasets

Backend experience

SQL skills

Communication skills

Education

Bachelor's or Master's in Computer Science, Engineering, or related discipline

Tools

Go

Python

PyTorch

Scikit-learn

Job description

Who we are:

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.

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. You can find your productive zone and work from there.

About The Role

As a Machine Learning Engineer, you’ll do more than build models - you’ll design the systems that make fraud detection possible. You’ll work across modeling, data pipelines, and backend systems (Go) to ensure ML models run reliably, efficiently, and at scale.

This is a chance to combine applied ML with large-scale systems engineering, owning end-to-end solutions that tackle high-stakes, ever-evolving challenges.

What You’ll Do

• Build and optimize data pipelines and backend services to process device and behavioral data in real time.
• Develop and deploy ML models for fraud detection, ensuring they run reliably and efficiently in production.
• Turn raw data into production-ready features that feed our fraud detection systems.
• Collaborate with platform and backend engineers to integrate models seamlessly.
• Maintain high standards of security, privacy, and compliance.
• Champion best practices in testing, documentation, and observability.

What You Bring

• 5+ years in software engineering, with strong backend experience (Go or Python).
• Hands‑on experience with applied ML using large datasets (PyTorch, Scikit-learn, etc.).
• Strong SQL skills and familiarity with relational and non‑relational databases.
• Experience with end‑to‑end ML systems: feature pipelines, model deployment, monitoring, and iteration.
• Excellent communication skills in English, both written and verbal.
• Bachelor's or Master's in Computer Science, Engineering, or a related discipline.

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.

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