Machine Learning Engineer (City of London)

Job Title: Machine Learning Engineer – Finance

Location: London (2 days on-site)

Salary: £60,000 - £80,000 + benefits

About Us

Our client is a fast-growing FinTech startup redefining how mid-sized enterprises manage liquidity, credit, and cross-border finance. Since 2020, they’ve grown to a 60-person team across the UK, closed our Series B, and are backed by top-tier investors including Notion and Accel.

At the core of our platform is intelligent decision-making at scale … and that’s where you come in. We’re now looking for a Machine Learning Engineer who’s ready to take ownership of production-level models that directly impact risk, underwriting, and transaction workflows.

What You’ll Do:

• Design, build, and deploy ML models for real-time credit risk scoring, fraud detection, and dynamic pricing
• Architect and implement end-to-end ML pipelines (from data ingestion and feature engineering to monitoring and retraining)
• Collaborate with product, engineering, and data teams to identify use cases, develop models, and integrate into our core platform
• Experiment with and apply state-of-the-art techniques in NLP, time series, and anomaly detection
• Own model evaluation, explainability, and monitoring frameworks in production
• Stay up to date with developments in the ML/AI ecosystem and bring fresh ideas to the table

What we’re looking for:

• Strong Python skills and experience in ML libraries like scikit-learn, PyTorch, TensorFlow , or XGBoost
• Hands-on experience building and deploying ML models into production environments
• Familiarity with ML Ops workflows (e.g., MLflow, Airflow, Weights & Biases, or Kubeflow)
• Experience working with structured data (credit, payments, customer behaviour) and applying feature engineering at scale
• Understanding of model performance metrics, calibration, A/B testing, and monitoring in production systems
• Experience with cloud platforms (GCP, AWS or Azure), especially managed ML services like SageMaker or Vertex AI
• Proficiency in SQL and working knowledge of distributed computing tools like Spark or Dask

Nice to Have:

• Experience with natural language processing (NLP) e.g., using LLMs, transformers, text classification
• Familiarity with Graph ML (e.g., for customer network analysis or fraud detection)
• Exposure to finance, credit risk modelling , or regulated environments
• Strong software engineering fundamentals, version control, CI/CD, testing
• Previous startup experience or entrepreneurial mindset

What We Offer:

• A chance to work on real-world ML problems that power decisions across millions in daily transactions
• Competitive salary and meaningful equity
• 25 days holiday + bank holidays
• Private healthcare & life insurance
• Generous learning budget + conference support
• An open, inclusive culture where experimentation is encouraged and your voice will be heard