Machine Learning Engineer at Korapay

Job Overview

Location
Lagos, Jigawa
Job Type
Full Time
Date Posted
8 days ago

Additional Details

Job ID
150116
Job Views
27

Job Description






Role Summary




  • We run payments across Africa and are now positioned as a global fiat and stablecoin payment infrastructure. We offer mobile money, virtual bank accounts, and virtual cards for payins and payouts across multiple markets. Our data infrastructure is batch-first (Airflow + a cloud data warehouse) and we use Vertex AI for our MLOps lifecycle. The ML team is high-ownership: you will build models, design systems, ship them, and observe them in production.

  • You will work on merchant-facing intelligence: forecasting, anomaly detection, segmentation, as well as automation and product-layer ML. If you want to build practical things that matter in a context that most ML engineers never get near, this is the role.



What You'll Work On




  • Design and ship a per-merchant payment volume forecasting system: time-series decomposition, Africa-specific event calendars (salary cycles, MNO maintenance windows, public holidays), quantile regression for uncertainty bounds

  • Build and maintain fraud/ anomaly detection across the payment stack (residual-based and model-driven) with tiered alerting logic mapped to merchant risk profiles.

  • Own the dynamic merchant segmentation system end-to-end: rule-based and data-driven hybrid, percentile thresholds grounded in EDA, segment-transition features as ML inputs

  • Instrument and monitor deployed models: drift detection, retraining triggers, and evaluation pipelines via Vertex AI

  • Build automation tooling that sits alongside the core ML work: Airflow DAGs, pipeline scaffolding, and tooling to reduce operational toil

  • Contribute to product and strategic thinking.



Requirements



Our Stack




  • Apache Spark and Airflow

  • Google Vertex AI

  • Python

  • SQL

  • GCS/BigQuery



What We're Looking For




  • 3+ years as an ML engineer in a production environment

  • Strong Python and comfort with Spark for large-scale data processing

  • Experience with time-series modelling: decomposition, forecasting, anomaly detection

  • Solid grasp of the ML lifecycle as a unified discipline

  • Ability to work with batch infrastructure and design for it deliberately

  • High ownership mentality: you notice problems and fix them as opposed to waiting to be assigned

  • Ability to identify gaps in data-driven business processes and come up with solutions



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