Machine Learning Jobs

Business Intelligence Developer and Data Engineer

This role involves developing and maintaining Power BI reports, dashboards, and semantic models, as well as designing and improving ETL/ELT pipelines using SQL, Python, and PySpark. You will work with Microsoft Fabric, Azure data services, and data warehouses, translating business requirements into practical BI and data solutions.

Key Appointments Wa73Eh, United Kingdom

Manager, Software Engineering

Leads a software engineering team building and operating Mastercard's Authentication Decisioning platform, which delivers real-time risk and authentication decisions using AI models, business rules, and data enrichment. Focuses on scalability, security, and operational excellence across distributed systems handling high-volume transaction processing.

Appcast Enterprise County Dublin, United Kingdom

Manager, Software Engineering

Lead a software engineering team building and operating Mastercard's Authentication Decisioning platform, a critical component of its global authentication ecosystem. Focus on delivering scalable, secure, and resilient systems using AI, business rules, and real-time decisioning to support digital payments security. Work across engineering, product, and security teams to drive technical strategy, operational excellence, and platform modernization at global scale.

Appcast Enterprise County Meath, United Kingdom

Staff Software Engineer - Machine Learning

This role involves leading the technical strategy for machine learning and AI across multiple teams in a large financial organisation. The engineer will drive MLOps standards, guide architectural decisions, and mentor other engineers while working on scalable, customer-facing AI systems. Collaboration with data science, product, and platform teams is central, with a focus on Gen AI, responsible AI, and enterprise-wide technical alignment.

Capital One Ec1Y8Af, United Kingdom

Manager, Software Engineering

Leads a software engineering team building and scaling Mastercard's Authentication Decisioning platform, which uses AI, business rules, and data enrichment to deliver real-time risk decisions at global scale. Focuses on technical delivery, operational excellence, and team development within a high-availability, security-critical environment.

Appcast Enterprise County Kildare, United Kingdom

Manager, Software Engineering

Lead a software engineering team building and scaling Mastercard's Authentication Decisioning platform, which delivers real-time risk and authentication decisions using AI, business rules, and data enrichment. Focus on operational excellence, secure software development, and cross-team collaboration to support large-scale, high-availability payment authentication systems.

Appcast Enterprise County Wicklow, United Kingdom

Senior AI Engineer

Lead the design and implementation of AI/ML solutions across the firm, managing a technical team and external providers. Drive the full AI lifecycle from model development to deployment, integrating with enterprise systems while shaping the technical strategy. Collaborate with business stakeholders to align AI use cases with strategic outcomes and ensure scalable, best-practice architecture.

A&O Shearman Bt132Bj, United Kingdom

Manager, Software Engineering

Lead a software engineering team building and scaling Mastercard's Authentication Decisioning platform, a critical component of its global authentication ecosystem. Focus on delivering secure, real-time risk decisions using AI models, business rules, and data enrichment at scale. Drive technical strategy, operational excellence, and team development while collaborating with cross-functional partners.

Appcast Enterprise Dundrum, United Kingdom

Lead Funds Data Architect - Citi

Discover your future at CitiWorking at Citi is far more than just a job. A career with us means joining a team of approximately 219,000 dedicated people from around the globe. At Citi, you'll have the opportunity to grow your...

eFinancialCareers Belfast, United Kingdom

Senior Software Engineer Java Or Python - VP - Citi

Discover your future at CitiWorking at Citi is far more than just a job. A career with us means joining a team of approximately 219,000 dedicated people from around the globe. At Citi, you'll have the opportunity to grow your...

eFinancialCareers Belfast, United Kingdom

Cash Equity Quant Researcher / London/ New York - Open

This role involves conducting advanced research to identify systematic anomalies in the equities market, developing and implementing trading strategies, and maintaining portfolio trading systems. You will work with large datasets, perform alpha idea generation, and contribute to the scalable research framework.

eFinancialCareers London, United Kingdom

On-site Permanent

Senior Quantitative Researcher - Systematic Macro Strategies

The role involves designing and managing data-driven trading models for global macroeconomic assets, primarily using futures and foreign exchange. Responsibilities include developing systematic trading strategies, applying advanced quantitative methods, and collaborating in a research-driven environment to enhance alpha models and portfolio construction techniques.

eFinancialCareers London, United Kingdom

On-site Permanent

Data Scientist

This role involves designing and developing customer-focused data science solutions, taking models from problem definition to deployment and monitoring. You will work closely with stakeholders to translate business questions into robust modelling approaches and partner with engineers and analysts to productionise models.

Harnham - Data and Analytics Recruitment Merseyside, United Kingdom £40,000 – £48,000 pa

Hybrid Permanent

Principal Data Scientist - Aristocrat

This role involves leading end-to-end data science initiatives to enhance player engagement, retention, and monetization in social casino games. The Principal Data Scientist will develop machine learning and reinforcement learning models, drive scalable experimentation, and translate complex insights into product decisions. They will also provide technical leadership, mentorship, and collaborate across engineering, MLOps, and game teams to build data products and improve decision-making frameworks.

eFinancialCareers London, United Kingdom

Enterprise Architect AI Asset Manager Finance Banking London

This role involves leading the enterprise-wide strategy and implementation of AI within a global asset management firm. You will assess current AI capabilities, define a target state and roadmap, and establish governance frameworks to accelerate AI adoption. The position focuses on integrating AI with data platforms like Databricks and Snowflake, using tools like LangChain and Agentic AI, while shaping policy and securing budget for AI initiatives.

eFinancialCareers London, United Kingdom £120,000 – £150,000 pa

Hybrid Permanent