Top Tech Jobs & Startup Jobs in London

One Month AgoSaved
In-Office
London, Greater London, England, GBR
Expert/Leader
Expert/Leader
Fintech • Financial Services
Defines long-term architecture and engineering standards across enterprise systems, including identity, endpoints, compute, virtualization, operating systems, storage, databases, and SaaS foundations. Leads modernization, cloud migration, automation, platform rationalization, and legacy system retirement. Acts as senior technical authority, mentors engineers, drives architecture decisions, and owns integrations such as SSO, provisioning, APIs, and data flows. The role is a hands-on individual contributor based in London with frequent travel to Amsterdam.
Top Skills: APIsArtificial IntelligenceAutomated ProvisioningAutomationCloud PlatformsDatabasesEndpoint ManagementEnterprise InfrastructureEnterprise SaasIdentity And Access ManagementInfrastructure As CodeOperating SystemsSingle Sign-On (Sso)Storage SystemsVirtualization
Reposted 2 Months AgoSaved
In-Office
London, Greater London, England, GBR
Senior level
Senior level
Fintech • Financial Services
Lead development and global rollout of core C++ trading platform components. Implement exchange connectivity (FIX, WebSocket, HTTP), optimize for ultra-low latency (kernel bypass, TLS), build trading algorithms, improve reliability and observability, and collaborate closely with quants and traders to deploy production systems.
Top Skills: C++Exchange SdksFixHTTPKernel BypassPythonRustTlsTypescriptWebsocket
Reposted 2 Months AgoSaved
In-Office
London, Greater London, England, GBR
Senior level
Senior level
Fintech • Financial Services
Lead design and global rollout of the Core market data and execution platform. Implement high-performance market data ingestion, normalization, distribution, and execution components. Build tools for quants and traders, own component lifecycle (deploy, monitor, profile, optimize), and collaborate closely with engineers, quants, and traders to iterate on platform design.
Top Skills: Algorithms And Data StructuresC++Cpu ArchitectureLock-Free ConcurrencyLow-Latency NetworkingMemory ArchitectureMultithreadingOs Internals
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