Top Tech Jobs & Startup Jobs in London

Conduct equity research on transport, infrastructure and business services: build financial models, write research reports, perform macroeconomic and company analysis, make investment recommendations, interact with institutional clients, arrange company visits, attend conferences, and ensure regulatory and compliance standards are met.

Hands-on design and implementation of FX trading systems, focusing on ultra low-latency solutions. Collaborate with trading, quant, and cross-functional teams to build, replace, and renovate systems, define architecture, troubleshoot software/hardware/network issues, and implement best practices and documentation.

Design and build scalable AI-powered backend services and APIs in Golang for cloud-native, microservices-based platforms. Develop developer tools, ensure observability, CI/CD, and performance, solve distributed-systems challenges, and mentor engineering teams to deliver production-ready solutions.

The Lead Pricing Engineer will manage a team, develop technical solutions for FX technology, write code, and engage with cross-functional teams. Responsibilities include enhancing system architecture and ensuring adherence to company best practices.

Design, develop, test, and deploy Web3 components and backend services for Citi's digital asset platform. Build smart contracts, integrate blockchain networks and wallets, implement event-driven architectures, support custody and tokenization, participate in code reviews, and maintain secure, scalable production-grade Web3 infrastructure within Agile teams.

Design, build, test, and maintain backend Java/Spring services and microservices that integrate with blockchain networks. Implement node connectivity, transaction submission, on-chain event monitoring, wallet interactions, and smart contract deployment. Support async/event-driven processing, production debugging, code reviews, documentation, and Agile delivery while following security and quality standards for enterprise-grade digital asset platforms.

Design, build and deliver backend enterprise web applications for Citi's Digital Assets Platform using Java/Spring and web3/blockchain technologies. Collaborate on solution design, follow best practices for scalability, reliability and performance, document systems, use DevOps and agile tools, and support distributed team delivery.

Senior engineer responsible for evolving SolstiCE index calculation platform: define architecture, design and implement features, integrate upstream/downstream systems, ensure robustness, manage production incidents, liaise with trading and administration stakeholders, and coach junior engineers.

Senior technology leader accountable for modernizing Markets Finance platforms (booking, settlements, inventory/position, collateral, liquidity/risk). Lead global engineering teams, own architecture for scalable distributed systems, drive CI/CD and cloud-native adoption, define and execute AI engineering strategy, manage delivery and stakeholders, and optimize system performance and resiliency.

Lead global transformation of Citi's Non-Financial Regulatory Reporting by defining strategy, delivering an AI-enabled Regulatory Intelligence Platform, executing a unified Target Operating Model, driving automation and data quality, managing global teams, and ensuring robust governance, risk controls, and senior stakeholder engagement.