Senior Machine Learning Engineer/Scientist- Identity & Trust

Job Description: At Remitly, we believe everyone deserves the freedom to access, move, and manage their money wherever life takes them. Since 2011, we've tirelessly delivered on our promise to customers sending money globally, providing secure, simple, and reliable ways to manage their money, ensuring true peace of mind. Whether it's supporting loved ones back home, growing a business across continents, or pursuing new opportunities abroad, we're not just here to move money— we're here to move our global customers forward. We're looking for builders, reimaginers, and global thinkers who want to work at the intersection of technology, trust, and transformation. If that's you and you're ready to do the most meaningful work of your career—we invite you to join over 2,800 passionate Remitlians worldwide who are united by our vision to transform lives with trusted financial services that transcend borders.

About the Role

The Trust Machine Learning team protects Remitly's customers by developing intelligent systems that prevent fraud. These systems assess the risk of every transaction and customer interaction, while minimizing the impact on user experience and customer trust. Fraud is one of the hardest applied machine learning problems: an adversary who adapts to every model we ship, extreme class imbalance, labels that arrive late or not at all, and outcomes we only observe for the transactions we approve. Making progress here takes both strong engineering and scientific rigor. As a Senior Machine Learning Engineer, you will develop the models and systems that detect fraud in real time and push the scientific capabilities of our fraud ML program forward. You will frame ambiguous fraud problems as testable hypotheses, advance our modeling techniques beyond established baselines, and carry your ideas from experimentation through to reliable production systems. You will report to the Senior Manager of Trust Machine Learning. This role is based in Remitly's office in Seattle, Washington.

You Will:

Design, build, and own machine learning models and systems that identify risky transactions and behavior in production

Advance our modeling capabilities with techniques suited to adversarial domains (e.g., graph-based methods for fraud rings, sequence models for behavioral patterns, and semi-supervised or anomaly detection approaches for novel attacks)

Design rigorous offline and online evaluation methodologies that account for extreme class imbalance, delayed and censored labels, selective labeling bias, and adversarial drift

Take modeling work from prototype to production, ensuring models meet real-time latency, reliability, and monitoring requirements

Raise the team's scientific bar through experiment design reviews, model deep-dives, mentoring, and bringing relevant external research into the team's practice

Collaborate with data scientists, risk operations, and business stakeholders to identify emerging fraud patterns and translate them into modeling opportunities

You Have:

A degree in computer science, machine learning, statistics, or a related quantitative field (advanced degree preferred), or equivalent experience

5+ years of experience building and deploying machine learning systems, including a track record of taking novel modeling approaches from idea to production

Deep grounding in ML fundamentals and experimental design: you can reason about why a model works, not just whether it does, and design evaluations that hold up under distribution shift

5+ years of programming experience in Python or equivalent, with hands-on experience in modern ML frameworks (e.g., PyTorch, XGBoost/LightGBM, scikit-learn)

Experience working with cloud platforms (e.g., AWS, GCP, Azure)

Nice to Have:

Experience in fraud, risk, abuse, trust and safety, or another adversarial ML domain

Publications, patents, or open-source research contributions demonstrating applied research impact

Depth in one or more of: graph machine learning, sequence/behavioral modeling, anomaly detection, causal inference, or LLM applications to risk.

Compensation Details.

The starting base salary range for this position is typically $196,000-$$245,000. In the U.S., Remitly employees are shareholders in our Company and equity is part of our total compensation plan.

Your recruiter can share more information about medical benefits offered, as well as other financial benefits and total compensation components offered with this role.

Our Benefits:

• Flexible paid time off
• Health, dental, and vision + 401k plan with company matching
• Paid parental, medical, military and family care leave
• Mental Health & Family Forming Benefits
• Employee Stock Purchase Plan (ESPP)
• Continuing education

Our Connected Work Culture:

Driving Innovation, Together At Remitly, we believe that true innovation sparks when we come together. Our Connected Work Culture fosters dynamic in-person collaboration, where ideas ignite and challenging problems find solutions faster. Under the Company's current hybrid-work expectations, employees in this position work onsite Tuesday through Thursday each week. Additional onsite attendance may be required based on business needs, and the Company may modify its hybrid-work expectations from time to time. These intentional in-office moments are vital for deepening relationships, fueling creativity, and ensuring your impact is felt where it matters most.

Remitly is an E-Verify Employer

At Remitly, we are dedicated to ensuring that our workplace offers equal employment opportunities to all employees and candidates, in full compliance with applicable laws and regulations.

Equal Opportunity Employer

Remitly is an equal opportunity employer.

We celebrate diversity and are committed to creating an inclusive environment for all employees.

Remitly is a leading digital financial services provider for immigrants and their families in over 170 countries around the world. Remitly helps immigrants send money home in a safe, reliable and transparent manner. Its digitally-native, cross-border remittance app eliminates the long wait times, complexities and fees typical of traditional remittance processes. Building on its strong foundation, Remitly is expanding its suite of products to further its mission and transform financial services for immigrants all around the world.