Korapay is a payment infrastructure servicing a wide band of businesses making local and international payments. We are a marketplace for digital financial services across Africa. Our vision, which is at the core of what we do every day, is to create a world void of digital financial barriers across Africa. We are committed to delivering reliable, secure, and easy to use digital financial solutions to every single customer with a guarantee that it is improving their lives.
We are recruiting to fill the position below:
Job Title: Machine Learning Engineer
Location: Nigeria (Remote)
Job type: Full-time
Category: Information Security
About The Role
- 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
Strong plus:
- Familiarity with Vertex AI (custom training jobs, model registry, pipelines, monitoring)
- Experience in payments, fintech, or any domain where label quality, distribution shift, and operational constraints are real problems
- Exposure to African market dynamics
- n8n or similar automation/workflow tooling experience
Important:
You will be evaluated less on credentials or certifications and more on the quality of your thinking. In this team, a strong ML engineer:
- Can explain why a design decision was made and what it trades off
- Writes systems that the next person can understand and build on
- Is honest about model limitations, especially in production contexts where overconfidence causes real loss
- Closes the loop between model outputs and business outcomes without needing to be told to.
Benefits
- Health insurance
- Sponsored and tailored training
- Paid parental leave
- Paid time-off
- Flexible work style
- Low-interest loans
- Group Life Insurance
- Access to up to four therapy sessions monthly
- Day off on your birthday
- Employee interest groups that provide supportive communities within Kora
- Great company culture and the opportunity to work with a highly collaborative team building something great!
Application Closing Date
Not Specified.
https://www.hotnigerianjobs.com/hotjobs/895105/machine-learning-engineer-at-korapay-remote.html