1 to 25 of 30 WebSockets Jobs in London

Managed Services (RDS, Batch, Lambda, Fargate, Step Functions, SQS/SNS, etc.)· FastAPI and NextJS experience (if we're still using the latter)· Websockets, Server-Side Events, Pub/Sub (RabbitMQ, Kafka, etc.)Who You'll Work With· Squad members of a specific squad, led by a Product Owner.· Tribe ...

contracts Model data in PostgreSQL: schema design, migrations, indexing and multi-tenant isolation Build event-driven and background processing, plus real-time features over WebSockets Implement SSO, OTP and session/JWT auth, and integrate with Microsoft 365, CRMs and document stores Work with the AI/ML team ...

problem-solving and code review skills, and the ability to communicate technical choices, estimates, risks and trade-offs clearly. Nice to have Experience with WebSockets or asynchronous Python (for example Django Channels or ASGI), or with another Python framework such as Flask or FastAPI.Experience building LLM-powered features, such ...

RESTful APIs ideally with an API-first approach. Strong knowledge of frontend polling and other async interactions patterns such as: polling/SSE/WebSockets for long-running tasks, optimistic updates, progress states, idempotent actions. Proficiency in integration, component and unit testing, with a strong commitment to code quality ...

ownership of complex engineering projects, making architectural decisions and mentoring other engineers. Desirable: Python, FastAPI, LangGraph, LangChain or similar AI frameworks. JSON-RPC, SSE, WebSockets and event-driven architectures. Experience with RAG, LLM function calling and context management. An interest in sport and the sports betting industry. Why Consider This ...

ownership of complex engineering projects, making architectural decisions and mentoring other engineers. Desirable: Python, FastAPI, LangGraph, LangChain or similar AI frameworks. JSON-RPC, SSE, WebSockets and event-driven architectures. Experience with RAG, LLM function calling and context management. An interest in sport and the sports betting industry. Why Consider This ...

function calling, tool use and agent orchestration. API gateways, OAuth2, JWT and secure service-to-service communication. JSON-RPC, Server-Sent Events (SSE), WebSockets or asynchronous programming. Experience designing and deploying production AI applications. If you're a strong backend engineer who's already building with AI, or an experienced ...

problem-solving skills and an ability to understand complex applications. A collaborative approach and a willingness to contribute ideas. Experience with FastAPI, Jinja, HTMX, WebSockets or similar technologies would be particularly useful, although experience with every technology isn't essential. We're also interested in developers who have worked ...

proficient in Python, with the ability to write clean, idiomatic, and robust code for public consumption. Technical StackEnvironment: Google Cloud Platform (GCP), Apigee. Protocols: WebSockets, REST, GCS.Tooling: Python (Expert), OAuth 2.0, GitHub, Protobuf/Avro, SQL.Company Benefits: Bonus ProgrammeEquity ProgrammeEmployee Stock Purchase Plan (ESPP)Private Medical and Dental coverageMental Health ...

Claude, Cursor etc) Worked on a broker platform, trading or similar industry experience a huge plus Nice to haves: Experience with real-time data (WebSockets, SSE or similar) AG Grid, Prime Vue UI state management systems such as Pina, Redux, and UI design systems. Angular/React Job Offer Performance ...

proven track record of delivering polished, performant, and elegant user interfaces. Deep appreciation for UI/UX craftsmanship and accessibility. Familiarity with REST APIs, websockets, and secure frontend patterns. A creative streak — you think visually and love turning complexity into clarity. Nice-to-haves Experience with 3D or WebGL rendering ...

Tech: C#, concurrent .NET code,TCP/IP and websockets, SQLChallenge: Greenfield Trading platform, API development, industry specific challengesFirm: Well-known Commodity Trading Software Firm, City of London, 40 man flat Dev TeamPay: 85k, 20% Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingC# Backend Developer FintechQuant ...

Hands-on experience with Kubernetes , AWS , and modern cloud infrastructure . Proficiency with databases — schema design, performance optimization, and analytics. Familiarity with REST APIs , websockets, and authentication/security best practices. A disciplined engineering mindset — you think about reliability, maintainability, and long-term scalability. Nice-to-haves Experience with MLOps ...

We’re recruiting an experienced Full Stack Developer to help build a greenfield trading platform for a financial services business. This is a full-stack role with a strong front-end/UI emphasis. You ...

from day 1.My client is based in Central London flex working is a given from now on.Tech: Junior C#, .Net, F#, WPF, SignalR/websockets, Protocol Buffers, Octopus, Autofac, SQL ServerChallenge: Greenfield Trading platform, API development, industry specific challengesFirm: Well-known Prop Trading Firm , City of London, 40 man flat ...

Group OverviewThe TP ICAP Group is a world leading provider of market infrastructure. Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data ...

production applications while contributing directly to the backend codebase. Working primarily with Go, you'll tackle technically challenging problems across authentication, security, networking and WebSockets, with the opportunity to understand and influence systems right down to the operating system level. Reliability will be central to everything you do. ...

async programming, clean architecture, and production-grade codeSystem design skills - you can design scalable, maintainable systems and articulate trade-offs clearlyAPI design expertise - REST, WebSockets/SSE, and understanding of distributed systems patternsDatabase proficiency - SQL and NoSQL (DynamoDB, PostgreSQL, OpenSearch), including query optimization and data modelingTesting mindset - you write comprehensive … systems - experience with LLM observability (Langfuse), token management, streaming, and reliability patternsAWS expertise - Lambda, ECS, DynamoDB, OpenSearch, Bedrock, or similar cloud servicesStreaming architectures - SSE, WebSockets, event-driven systemsFintech/compliance background - AML, sanctions screening, KYC, or regulated industry experienceMicro-frontend experience - Module Federation, independent deployabilityInfrastructure as Code - Terraform ...

Job ID: 102286995760Posted: 2026-10-30Location: London, England, United KingdomCategory: TechnologyCompany: CitiFX Client Platforms - Senior UI Software Engineer (Vice President)About the RoleWe are seeking a Senior Applications Developer to join a team delivering ...

while contributing directly to the backend codebase. Working primarily with Go/Golang, you'll tackle technically challenging problems across authentication, security, networking and WebSockets, with the opportunity to understand and influence systems right down to the operating system level. Reliability will be central to everything you do. ...

This is an opportunity for a technical problem solving SRE to join a leading global fintech who are currently growing their presence in Europe. Role Responsibilities; Investigate, troubleshoot and diagnose incidents Provide first-third line ...

UX Engineer/Developer (TypeScript React) London/WFH to 60kAre you a UX Engineer who combines strong frontend engineering skills with a passion for building intuitive, high performance user experiences You could be joining ...

Location: London; UKWork type: HybridSeniority: SeniorPrimary skill: C++Posted: 2026-10-06We're looking for a Senior C++ Engineer to join our team in London, United Kingdom in a hybrid working mode. You will be ...

C# Software Engineer 100,000 Plus BensRemote FirstQuant Capital is urgently looking for a C# Software Engineer for our high profile investment management vendor. Our client is a well known global broker across a number ...

C# Software Engineer 100,000 Plus BensRemote FirstQuant Capital is urgently looking for a C# Software Engineer for our high profile investment management vendor. Our client is a well known global broker across a number ...