Job Specifications
Join Zepz: Breaking Down Borders, Together
Our Meaningful Mission
At Zepz, we're all about breaking down barriers for our customers and our teammates. Our purpose is deeply personal, we provide a lifeline and deliver opportunities to cross-border communities that need it most through cutting edge finance and tech.Zepz is the power behind WorldRemit and Sendwave, driven by the mission to celebrate the incredible impact migrants have, both at home and abroad. We're not just moving money; we're building a world that truly recognizes and supports global connections.
Who You'll Be Joining
We look for mission-driven builders who thrive in a fast-paced environment connected to a true purpose. We’re an always developing team of experts that enjoy problem solving and bring clarity to tough challenges. At Zepz, we are Relentless Learners, always seeking feedback, and Responsible Owners, treating company resources like your own. We depend on Transparent Communicators who keep the team aligned through open, honest talk.
Our Core Commitments — What We Live By
Our vibrant and truly diverse culture is built on three core commitments, that guide how we work and interact:
Integrity: We always do the right thing. It’s simple, but it’s the foundation of everything we build for our customers and each other.
Outcomes: We work for our customers. Their success and prosperity are the results we focus on delivering.
Velocity: We are fast! We maintain high energy levels and make smart decisions quickly, keeping us nimble and ahead of the curve.
Perks of Joining Our Team
We believe in empowering colleagues because we genuinely trust our team. Our culture is founded on this high trust, which naturally encourages the high ownership that drives us to meet our shared high expectations and deliver high performance. Our remote-first culture means you have the flexibility to work in your employing country wherever you feel the most focused and productive. This freedom comes with wonderful tailored, location-specific perks designed to support your whole life, not just your work. Think unlimited annual leave , great healthcare benefits, and employee discounts. We want you to thrive and focus entirely on making your biggest impact! In turn, we expect you to bring high ownership and commitment to your work. This is a place where we value trust and high performance, and we'll provide the environment and support needed for you to excel.
About the Role
As a Senior Machine Learning Engineer at Zepz, you will occupy the critical intersection of research and engineering within our FinCrime (Financial Crime) team. You aren’t just building models in a notebook; you are architecting the logic and the delivery systems that protect our customers.
You will lead the charge in identifying trends for fraud detection and then take those ideas all the way through to a production-ready state. This role is perfect for a scientist who loves to code and an engineer who loves the "why" behind the data.
What You Will Own
End-to-End Model Ownership: Lead the full lifecycle of fraud detection models—from initial hypothesis and feature engineering to deploying the live API and setting up automated CI/CD pipelines.
Hybrid Logic Design: Design models while simultaneously building the infrastructure to ensure they scale and handle real-time data.
Automation & Drift Detection: Own the "Ops" side of your models, ensuring they are documented, tested, and monitored for performance decay or model drift in production.
Cross-Functional Translation: Act as the technical bridge between Backend Engineers and the broader Data Science team to integrate ML solutions into our core product.
Strategic Experiments: Conduct high-impact experiments to evaluate new data sources and modeling techniques, ensuring every technical choice has a clear commercial outcome.
What You Bring to the Table
The Experience: 6+ years of professional experience where you have both developed and productionalized machine learning models.
The "Science" (DS): Deep expertise in Gradient Boosting (XGBoost/LightGBM), feature engineering, and translating business fraud patterns into mathematical problems.
The "Engineering" (MLE): Software Mastery: High proficiency in Python, treating your ML code as production-grade software (unit tests, clean architecture).
Data Power: Expert SQL for complex data extraction and dbt for maintaining reliable feature stores.
Deployment: Experience with Docker, orchestration tools, and deploying models into cloud environments.
Tools: Familiarity with Scikit-Learn, BigQuery/Redshift/Databricks, and monitoring frameworks.
Mindset: You are a Responsible Owner who doesn't consider a project "done" until the model is providing value in a live environment.
Bonus Points
Experience with cloud-native ML deployment.
Previous experience in FinTech, Fraud, or Risk domains.
A "tenacious" attitude—you enjoy the challenge of debugging a production pipeline as much as tuning a hyperpar
About the Company
Zepz is powering two leading global payments brands: WorldRemit and Sendwave. We represent brands that disrupted an industry previously dominated by offline legacy players by taking international money transfers online - making global digital payments fairer, faster, and more flexible. Our brands currently send from 50 to 130 countries, operate in more than 5,000 money transfer corridors worldwide and employ over 1,400 people globally. Zepz is a remote-first employer, with team members located across six continents.
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