Top Tech Jobs & Startup Jobs in London

Develop and support a high-throughput, low-latency energy trading platform. Responsibilities include improving exchange and broker connectivity, building SDK and API features, enhancing observability, implementing automated trading capabilities, benchmarking for performance, designing complex features, contributing to RFCs, and mentoring junior engineers. The role requires expertise in C#, Rust, concurrency, distributed systems, and software reliability.

Provides administrative and HRIS support across the European region, serving as the first point of contact for employee queries. Coordinates joiner, mover, and leaver processes; supports payroll inputs, employee relations documentation, audits, policy updates, employment letters, and HR projects. Maintains accurate employee records and compliance documentation while contributing to process improvements and effective HR service delivery.

Develops Tableau dashboards and reports, analyzes complex datasets, and delivers actionable market, product, operational, commercial, and financial insights. Collaborates with technical and business stakeholders, writes optimized SQL for SQL Server and Snowflake, promotes data governance and quality, automates analytical workflows, builds data pipelines and API integrations, and maintains version-controlled code using modern deployment practices.

Lead software quality and testing strategy through exploratory, risk-based, shift-left, shift-right, and automated testing. Coach developers and teammates, investigate bugs and root causes, contribute to architecture discussions, improve observability, support CI/CD workflows, and build internal testing tools using AI assistants. Collaborate closely with product and engineering teams to deliver reliable, maintainable software and promote a company-wide culture of quality.

Supports governance, risk, and compliance activities by maintaining security policies, coordinating audits, tracking risk actions, monitoring incidents, producing control-effectiveness reports, and promoting information security awareness. The role collaborates with stakeholders to support ISO 27001, DORA, GDPR, and other security framework requirements while improving cybersecurity processes and controls.

Develop and maintain automated tests primarily through coding in C#. Build and optimize test frameworks, API tests, and CI/CD pipelines; investigate failures and perform root-cause analysis. Collaborate on architecture, user stories, and acceptance criteria, mentor quality engineers, use AI development tools, and share product and testing knowledge across engineering teams.

Architects and maintains data warehouses, designs schemas, automates data ingestion and quality checks, builds dashboards and visualizations, and advances data governance. Partners with stakeholders to translate complex data into actionable insights and supports organization-wide data-driven decisions. Mentors BI analysts and promotes technical best practices across the BI team.

Manage Trayport’s information security governance, risk, and compliance program across the UK and EU. Responsibilities include maintaining ISO 27001 certification, policies, standards, risk assessments, audits, reporting, security awareness training, third-party risk, and regulatory compliance. The manager will lead the Risk & Compliance team, advise executives, collaborate cross-functionally, and represent security requirements in enterprise governance forums.

Designs, deploys, maintains, and improves enterprise infrastructure, primarily private cloud and Linux environments. Responsibilities include architecture, connectivity, upgrades, patching, application and infrastructure support, business continuity and disaster recovery, critical incident response, and internal project delivery. The role emphasizes Infrastructure as Code, automation, DevOps tooling, cloud platforms, enterprise Linux administration, and continuous service availability improvements.

Designs, builds, and operates highly available multi-cloud infrastructure across AWS, Azure, Kubernetes, and on-premises environments. Owns networking, infrastructure-as-code, CI/CD, observability, disaster recovery, and SRE practices for a globally distributed trading platform. Develops AI-assisted operational workflows for incident response, automation, and toil reduction. Mentors senior engineers, serves as a cross-team design authority, and contributes to the platform roadmap in a regulated, availability-critical environment.