This role supports eTrading platforms using Windows/Linux, Bash, PowerShell, Python,

Work with Python, PyTorch, TensorFlow, Scikit-learn, XGBoost, AWS (SageMaker, Lambda, S3), MLflow, LangChain and other MLOps/LLMOps frameworks to build and deploy ML and generative AI solutions. You will design production-ready models for forecasting, classification, and anomaly detection, as well as LLM-powered applications, supporting defence, government, and national security clients as part of a technology consultancy.

This Full Stack Engineering Lead role at Citi’s Finance Technology team involves hands-on development with Java, Spring Boot, Spring Cloud, React, TypeScript, Node.js, and microservices. The team is re-platforming applications to support the Finance business, focusing on building scalable solutions for regulatory and operational needs. Testing practices use Jest, Cypress, JUnit, and Mockito, with AWS or GCP experience as a plus.

React Native developer will work with JavaScript/TypeScript, APIs, and CI/CD to build and optimise mobile apps for iOS and Android. The role is with a FinTech undergoing a digital transformation programme, modernising core mobile products and improving user journeys.

Senior Kotlin backend role with full-stack exposure to Angular/React, Spring AI, reactive streams, and event-driven tools like Kafka or RabbitMQ. You'll build a data integration platform for banks, an open-source schema language, and a greenfield AI agent for autonomous orchestration.

You'll work with the Azure integration stack (APIM, Logic Apps, Function Apps, Service Bus, Event Grid), legacy MuleSoft Anypoint, and SaaS platforms including Workday, Oracle Symphony, NetSuite, and e-commerce systems. Leading Pret’s Integrations team, you'll own the target architecture, build the most complex integrations, and migrate the estate from MuleSoft to Azure. You'll line-manage the Integrations Engineers and define standards and patterns.

You’ll work with C++, Java, C#, or Rust on the core team of a crypto-native prop firm that runs one of the world’s largest DeFi trading operations. As a pure individual contributor, you ship to production and can later move into trader–dev hybrid roles.