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Full Stack Lead Engineer, Vice President - Citi

This role involves leading the development, enhancement, and maintenance of financial technology solutions using emerging technologies and AI. Responsibilities include writing secure and maintainable code, participating in technical discussions, and collaborating with architects and senior engineers to deliver scalable and resilient applications.

eFinancialCareers London, United Kingdom

Senior LNG Technologist - Investigo

This role involves leading the redesign and modernisation of a complex trading platform, assessing existing functionality, and driving architectural and engineering decisions. You will work closely with traders and front-office stakeholders to deliver business-critical solutions, contributing hands-on to development while providing technical leadership.

eFinancialCareers London, United Kingdom
Contract

Data & AI Architect Manager

This role involves leading the design and delivery of modern data solutions, working across complex transformation programmes and directly with senior client stakeholders. Responsibilities include end-to-end data architecture, cloud data platforms, data governance, AI/ML integration, and translating complex insights into business outcomes.

eFinancialCareers London, United Kingdom £90,000 pa

Distributed Systems Software Engineer- Leading Quantitative Trading Firms

This role involves working on complex distributed systems and infrastructure for leading quantitative trading firms. Responsibilities include large-scale distributed compute, scheduling, storage, real-time event-driven systems, and high-throughput messaging. The position offers significant ownership and impact in a high-performance environment.

eFinancialCareers London, United Kingdom £200,000 – £500,000 pa

Senior Manager - AWS Solution Architect

This role involves leading complex cloud transformation programmes for tier-1 clients, defining AWS cloud strategy, and mentoring architects. You will work with senior stakeholders, design secure and scalable architectures, and drive cloud cost optimisation and modern cloud-native technologies.

eFinancialCareers London, United Kingdom £120,000 pa

Senior Software Engineer - CRISIL

This role involves designing and building scalable, distributed systems for risk data processing, analytics, and reporting. You will develop backend services using Java (Spring/Spring Boot) and Python, work with large datasets, and collaborate with risk, front-office, and data teams to translate requirements into robust technical solutions.

eFinancialCareers London, United Kingdom

Lead DevOps Engineer

This role involves leading the design and evolution of scalable, secure, and highly available trading infrastructure. Responsibilities include mentoring engineers, building CI/CD pipelines, automating infrastructure, and collaborating with global teams to improve reliability, security, and operational readiness.

eFinancialCareers London, United Kingdom

DevOps Engineer

This role involves engineering and automating cloud infrastructure for a leading cyber and defence organisation. You'll work on secure, cloud-native platforms, implement IaC, build CI/CD pipelines, and support containerised environments. The focus is on delivering fast, secure, and reliable infrastructure for high-impact national security and government programmes.

eFinancialCareers London, United Kingdom £45,000 – £60,000 pa
Hybrid Permanent Clearance Required

Python Developer - Trading Systems & Research Infrastructure No Finance Experience Needed

This role involves developing and optimizing components of a research and trading platform, working closely with quant researchers and portfolio managers. Responsibilities include building scalable tools for data analysis, performance tuning, and supporting model development, with a focus on Python and data pipelines.

eFinancialCareers London, United Kingdom
On-site Permanent

Data Engineer

This role involves building and maintaining modern data platforms and pipelines in a collaborative team. You'll work closely with Data Scientists, Analysts, and Architects to deliver scalable data solutions and support complex data-driven projects in secure government environments.

eFinancialCareers London, United Kingdom £40,000 – £53,000 pa
Hybrid Permanent Flexible Clearance Required

Machine Learning Systems / AI Infrastructure Engineer- Quant / Systematic Trading Firms

This role involves building and optimizing the infrastructure for cutting-edge machine learning capabilities in quantitative trading firms. Responsibilities include large-scale distributed training, GPU infrastructure, high-performance inference, and developing research platforms to enable rapid model deployment.

eFinancialCareers London, United Kingdom

Senior Front Office Engineer- Leading Global Energy Commodities Trading

This role involves partnering with traders and analysts to optimize trading processes, building scalable Python services and APIs, and designing cloud-native tools for the Front Office platform. You will work in a fast-paced, data-driven environment, focusing on systematic trading and risk management.

eFinancialCareers London, United Kingdom
On-site Permanent

Senior System Engineer - Man Group plc

This role involves building and maintaining automation frameworks for Man Group's global trading and research operations. Responsibilities include designing infrastructure-as-code solutions, managing Kubernetes clusters, and creating self-service platforms. The position requires hands-on experience with tools like Terraform, Ansible, and Kubernetes, and a strong understanding of observability and monitoring practices.

eFinancialCareers London, United Kingdom

Senior Golang Engineer - AI Products & Platforms - Citi

This role involves designing and building AI-powered products and platforms using Golang, developing high-performance backend services and APIs, and contributing to cloud-native, microservices-based architectures. You will work closely with product, engineering, and AI teams to turn innovative ideas into production-ready solutions, focusing on scalability, resilience, and performance.

eFinancialCareers London, United Kingdom

Head of AI Solutions, COO Technology - MD C16 - Citi

This executive-level role involves leading the development and deployment of a unified AI strategy and platform across Citi's COO Technology organization. Responsibilities include defining the AI architecture, building a high-performing engineering team, and delivering production-grade AI solutions in highly regulated operational domains such as KYC, fraud detection, and global reconciliations. The role requires deep expertise in generative AI, agentic systems, and cloud AI platforms.

eFinancialCareers London, United Kingdom

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