1 to 25 of 73 GraphQL Jobs in London

Senior Java Engineer (AWS, REST, SOAP) – Hybrid – Sussex

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
engineering organisation. Key Responsibilities Design, develop, and maintain high‐quality Java applications using Spring Boot. Build and optimise RESTful APIs and contribute to GraphQL service development. Develop cloud‐native solutions using AWS services such as Lambda, API Gateway, DynamoDB, ECS, S3, and others. Contribute to microservices architecture, event‐driven systems ...

Senior Fullstack Developer — Java or Kotlin, React and TypeScript

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
software engineering context.* Event-driven architecture and messaging or streaming technologies.* Experience with frameworks such as Spring Boot, Quarkus, Micronaut or Ktor.* GraphQL or comparable API technologies.* Cloud platforms such as AWS, Azure or GCP.* Containerisation and orchestration using Docker and Kubernetes.* NoSQL, caching or distributed data technologies.* Experience choosing ...

Senior Fullstack Developer — Java or Kotlin, React and TypeScript

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
software engineering context. Event-driven architecture and messaging or streaming technologies. Experience with frameworks such as Spring Boot, Quarkus, Micronaut or Ktor. GraphQL or comparable API technologies. Cloud platforms such as AWS, Azure or GCP. Containerisation and orchestration using Docker and Kubernetes. NoSQL, caching or distributed data technologies. Experience choosing ...

Engineer C# (Full Stack)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
. Excellent problem‐solving, communication, and collaboration skills. Desired Experience with microservices and event‐driven architectures. Experience with AI‐assisted design and coding. GraphQL and WebSockets. Knowledge of observability tools (e.g., OpenTelemetry, Grafana). Familiarity with Infrastructure as Code (Terraform). Understanding of financial markets or trading systems. Contribution ...

Engineer C# (Full Stack)

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
Excellent problem‐solving, communication, and collaboration skills. Desired: Experience with microservices and event‐driven architectures. Experience with AI‐assisted design and coding. Knowledge of GraphQL and WebSockets. Familiarity with observability tools such as OpenTelemetry and Grafana. Experience with Infrastructure as Code (Terraform). Understanding of financial markets or trading systems. ...

Engineer C# (Full Stack)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
skills (SQL).* Excellent problem-solving, communication, and collaboration skills.Desired* Experience with microservices and event-driven architectures.* Experience with AI assisted design and coding.* GraphQL, and WebSockets.* Knowledge of observability tools (e.g., OpenTelemetry, Grafana).* Familiarity with Infrastructure as Code (Terraform).* Understanding of financial markets or trading systems.* Contribution ...

Engineering Lead

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Identities, Azure Key Vault Encryption, network security, RBAC, Zero Trust principles. Application Engineering Backend : Python (Flask, FastAPI), .NET/.NET Core, RESTful APIs and GraphQL, Microservices and event-driven architectures Data modelling, transformation and optimisation Data lake and lakehouse architectures Data governance, metadata management and lineage Large-scale cloud migration ...

Senior Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Full Stack Engineer. 5+ years of relevant experience in coding in Typescript/JavaScript, using Node.js to architect and create REST and/or GraphQL APIs. Preferred experience working with eCommerce systems and platforms. Strong technical experience in modern front-end Typescript/JavaScript libraries and frameworks such as React.js. ...

Principal Technology Architect - LLMs, agentic coding systems, intelligent IDEs, AI

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
workflows where permitted; govern enterprise knowledge ingestion. Architecture & Integration Distributed systems, microservices, cloud‐native (Azure/AWS/GCP); secure API design (REST/GraphQL). MLOps & AIOps: CI/CD for AI, model lifecycle (eval, versioning, rollout/rollback), guardrails, telemetry, drift monitoring, prompt safety. DevSec & Responsible AI: Privacy ...

Senior Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
using AI effectively as part of the software development lifecycle. Highly Desirable Skills React Native Next.js Google Cloud Platform (GCP) Kubernetes Design Systems Storybook GraphQL Micro Frontends Performance optimisation and Core Web Vitals Accessibility (WCAG) Observability platforms and frontend monitoring Everyone is Welcome At Nando’s, everyone is welcome. Inspired ...

Senior Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
high‐quality React Native application.* Architect scalable mobile solutions that meet the demands of financial applications (security, performance, reliability).* Integrate with RESTful and GraphQL APIs and collaborate closely with backend teams.* Optimize app performance, including memory usage, load times, and smooth UI interactions.* Implement high‐security standards such ...

Forward Deployed ML Engineer, Agents

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
500ms latency, natural conversation flow, turn detection, and interruption handling in real-time systems Integrate agents directly into customer codebases via REST/GraphQL/WebSocket APIs and custom SDKs (Python, TypeScript) Act as trusted technical advisor to customers, shaping AI strategy and guiding roadmap decisions from concept to production ...

Banking Tech Full Stack Lead Engineer (Angular/Java) - VP

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Banking domain knowledge **Required Skills & Experience*** Significant hands-on experience with Angular, TypeScript, HTML5, Java & Spring framework* Proven experience of API first solution - REST, GraphQL* Experience designing & implementing large-scale platforms using microservices architecture* Experience working in Agile/Scrum delivery teams & incremental frequent releases.* Database design and queries ...

Banking Tech Full Stack Lead Engineer (Angular/Java) - VP

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Banking domain knowledge Required Skills & Experience Significant hands‐on experience with Angular, TypeScript, HTML5, Java & Spring framework Proven experience of API first solution - REST, GraphQL Experience designing & implementing large‐scale platforms using microservices architecture Experience working in Agile/Scrum delivery teams & incremental frequent releases. Database design and queries ...

Banking Tech Full Stack Lead Engineer Angular/Java - VP - Citi

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Banking domain knowledge Required Skills & Experience Significant hands‐on experience with Angular, TypeScript, HTML5, Java & Spring framework Proven experience of API first solution - REST, GraphQL Experience designing & implementing large‐scale platforms using microservices architecture Experience working in Agile/Scrum delivery teams & incremental frequent releases. Database design and queries ...

Software Engineer (Backend)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
important). Solid understanding of backend fundamentals: concurrency, data modelling, transactions, reliability, and observability. Experience designing and consuming APIs (REST/gRPC/GraphQL) and integrating with other services and data stores. Strong testing mindset and familiarity with CI/CD workflows. Clear communication skills and a collaborative approach ...

Senior Technical Lead

Hiring Organisation
InstaResource Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
with prompt engineering or AI automation pipelines is highly desirable. Core Technical Skills: .NET/C# JavaScript/TypeScript React or Next.js RESTful APIs GraphQL CI/CD pipelines (Azure DevOps or GitHub Actions) Performance optimisation WCAG 2.1 accessibility standards SEO best practices Agile/Scrum delivery experience. Desirable: Sitecore ...

Python Application Developer with DevOps

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
with Python and software design patterns (SOLID, DRY) Expertise in AWS (or similar cloud providers), Containerization and Kubernetes Deep understanding of RESTful API or GraphQL API design and development Strong experience with GIT and CI/CD tooling (Github Actions, Gitlab, Argo CD, Azure Devops) Experience monitoring systems in production ...

Principal Engineer - Java - £110,000

Hiring Organisation
Intec Select Ltd
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 100,000 - 110,000 Annual
modern technologies to design and implement scalable, secure, and high-performing cloud-native solutions. API Development and Integration: Design and build secure RESTful and GraphQL APIs, ensuring seamless integration with core banking systems (e.g., Mambu) and external services like Open Banking platforms. Data Engineering and Analytics: Work closely with data ...

Principal Engineer - Java - £110,000

Hiring Organisation
Intec Select Ltd
Location
London, Broad Street, United Kingdom
Employment Type
Permanent
Salary
£100000 - £110000/annum Hybrid + 25% bonus
modern technologies to design and implement scalable, secure, and high-performing cloud-native solutions. API Development and Integration: Design and build secure RESTful and GraphQL APIs, ensuring seamless integration with core banking systems (e.g., Mambu) and external services like Open Banking platforms. Data Engineering and Analytics: Work closely with data ...

AI Solutions Architect - up to £120K+Benefits - Hybrid/London

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
assisted development tools Strong knowledge of cloud AI and ML platforms and associated architecture patterns Experience designing and managing APIs including REST and GraphQL Strong understanding of microservices and serverless architectures Practical experience with DevOps and MLOps practices including CI/CD pipelines Knowledge of security frameworks, identity management ...

Frontend Engineer - Java and Open Source - Private and FS

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
React. Any further experience with Next.js/Angular/Vue.js is beneficial Experience with mobile development frameworks like React Native is beneficial. Experience with GraphQL, preferably using Apollo Client with React for efficient data fetching and state management. Experience in Unit Testing with Jest Continuous Integration experience (Docker) A passion ...

Staff React Full Stack Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
TanStack Query or Apollo), modern toolchains (Vite, ESBuild) and package managers (pnpm/yarn/npm). Strong Node.js back-end skills – RESTful and GraphQL API design, integration patterns, relational and NoSQL data modelling, and a practical understanding of deploying into modern cloud and serverless environments (AWS and CloudFlare preferred ...

Back-end Engineer (contract)

Hiring Organisation
Opus Recruitment Solutions
Location
London, Finsbury Square, United Kingdom
Employment Type
Contract
Contract Rate
£375 - £400/day
data infrastructure, distributed systems, APIS and AI-services Proven experience in building/designing scalable backend services Strong experience building and maintaining APIs (REST, GraphQL and/or gRPC). Knowledge of Docker and AWS (ideally in a recent project) Essential - must have strong coding skills in Python, Typescript, Node ...

Senior Automation Engineer - London- Global Prime Brokerage & Financing Platform

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
production experience integrating or fine-tuning LLM/GenAI solutions (OpenAI, Bedrock, or similar) Deep knowledge of Jira data model, webhooks, and REST/GraphQL APIs Strong grasp of security for SaaS integrations: OAuth, secret rotation, data-in-transit/at-rest encryption Familiarity with financial or regulated environments ...