Top Tech Jobs & Startup Jobs in London

Develop and maintain quantitative equity models, alpha signals, factor research, and thematic investment insights for institutional investors. Produce client-facing research, conduct bespoke portfolio and market analyses, and enhance scalable research infrastructure using machine learning, agentic AI, automation, and advanced analytics. Translate complex quantitative findings into clear investment narratives and support client engagement.

Lead product strategy, transformation, and lifecycle management for cross-border payments and custody FX solutions. Identify market opportunities, develop roadmaps, manage client and strategic partnerships, and coordinate with technology, risk, legal, compliance, sales, and trading teams. Oversee requirements, testing, launches, regulatory adherence, performance monitoring, and product enhancements while providing FX market thought leadership.

The role involves developing and maintaining Python micro-services for a proprietary trading platform, collaborating with traders and global teams, and integrating with analytics libraries.

Lead design and development of low-latency, event-sourced microservices for algorithmic trading. Hands-on coding (primarily Java or Rust), performance tuning, market-data handling (KDB), integration, mentoring, and architectural leadership to enable low-latency eTrading platforms and related simulation/replay utilities.

Hands-on SRE and observability engineer responsible for migrating legacy monitoring platforms to Google Cloud Observability and Grafana using OpenTelemetry. Develops telemetry collectors, Helm charts, Ansible playbooks, and Terraform solutions across Kubernetes, OpenShift, and VM environments. Partners with application teams on instrumentation, dashboards, alerts, SLOs, resiliency patterns, recovery testing, and chaos engineering. Ensures solutions meet regulatory and enterprise security requirements while improving reliability, scalability, and operational efficiency.

Design, build and maintain high-quality, scalable margin and collateral systems. Collaborate with product and global teams, implement RESTful APIs, apply TDD and clean code, and solve complex engineering challenges in a fast-paced finance environment.

Lead Citi's AI-First PDLC, defining enterprise capability models, process governance, and AI-enabled standards. Oversee process mapping, AI-augmented LEAN assessments, stakeholder engagement, and build a global team to ensure audit-ready, controlled, and optimized AI-enabled operations.

Design, develop, test, and maintain Java applications across the full software lifecycle. Collaborate on system design, troubleshoot issues, build microservices, integrate AI-assisted tools, implement APIs, and follow risk, compliance, and DevOps best practices to deliver robust software solutions.

Lead Java Developer responsible for delivering Real-Time and On-Demand Risk enhancements, managing the full development lifecycle, collaborating with global teams, and driving operational improvements.

Lead Custody FX product strategy and transformation, partnering with Custody, TTS, Sales, Trading and Technology to define roadmaps, launch and manage FX products, negotiate partnerships, ensure regulatory compliance, and drive client-focused solutions and workflows across the product lifecycle.