1 to 25 of 251 GraphQL Jobs in London

Node Developer

Location
Greater London, England, United Kingdom
write clean, efficient, and scalable code. Familiarity with CI/CD pipelines and DevOps practices is a plus. Experience with TypeScript. Familiarity with GraphQL or other modern data‐fetching technologies. Experience in integrating message brokers (e.g., RabbitMQ, Kafka). Familiarity with cloud platforms like AWS, Azure, or Google Cloud. Knowledge ...

Senior Fullstack Engineer (Python + React.js)

Location
Greater London, England, United Kingdom
backend systems and create API endpoints for model interaction (e.g., retrieving predictions). Develop and maintain scalable services, e.g. Microservices utilising REST, gRPC, or GraphQL, ensuring optimal performance and seamless integration. Optimize database queries and schemas to improve performance, scalability, and reliability. Implement security features, including authentication and authorization using ...

Head of Engineering - Data Products

Hiring Organisation
Dentsu
Location
London, UK
Employment Type
Full-time
patterns. Experience with identity/access management integrations (Okta, Entra ID).Experience with service mesh technologies (Istio) and advanced networking patterns. Working knowledge of GraphQL APIs, ABAC solutions, and CMS platforms. Experience with C4 model architecture documentation (PlantUML or similar).TOGAF or other enterprise architecture certification. Cloud architecture certifications ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
APIs) 4+ years of production experience with modern Web stacks (TypeScript, React, Node.js, or Python/FastAPI). Strong API design experience (REST, GraphQL, gRPC, WebSocket) and relational/non-relational database design (PostgreSQL, SQLite). Systems & Mobile Architecture (Android ART) Proficiency in Kotlin or Java on native Android environments ...

Principal Software Engineer

Hiring Organisation
Collinson Group
Location
London, UK
Employment Type
Full-time
most critical pillars in our Engineering organisation, our API platform, driving innovation across synchronous and asynchronous services built with REST, GraphQL, Kafka, and cloud-native technologies. You'll work hands-on with modern engineering tools and practices, partnering with talented squads to solve complex distributed systems challenges at scale. From ...

Full Stack Developer

Location
City of Westminster, England, United Kingdom
Familiarity with CI/CD tools (GitHub Actions, GitLab), IaC (Terraform, Ansible), and monitoring tools (Datadog, Grafana). Containerization : Docker and Kubernetes. APIs : REST, GraphQL, OpenAPI. Databases : SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis). Testing : Unit and functional testing (Jest, Cypress, Mocha). Soft Skills Strong communication skills ...

Senior Fullstack Developer — Java or Kotlin, React and TypeScript

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 ...

Global AI/ML Engineer Senior Manager

Hiring Organisation
The Boston Consulting Group
Location
London, UK
Employment Type
Full-time
software application· Previous experience with vectors and embeddings (pgvector, chromadb)· Knowledge of LLM RAG/Agent core concepts and fundamentals· Experience with Neo4J, GraphQL for efficient data querying for APIs,· CI/CD tools (e.g. Github Actions, Gitlab CI) for automating deployments· Other AWS Managed Services (RDS, Batch, Lambda, Fargate ...

Staff Software Engineer, Liquidity

Location
Greater London, England, United Kingdom
modeling Deep experience in building large scale multi-tenant enterprise applications Experience building and maintaining RESTful APIs and understanding when to use alternative patterns (GraphQL, gRPC, webhooks) Deep knowledge in building applications using React, TypeScript, JavaScript, and related technologies WHO WE ARE: Do Your Best Work The opportunity to build ...

Full Stack Software Engineer

Hiring Organisation
McGregor Boyall
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £100,000 per annum
while gaining exposure to cutting-edge AWS architecture and engineering best practices. Key Skills: TypeScript React, Redux, React Query HTML5, CSS3, Tailwind REST APIs, GraphQL, WebSockets AWS (Lambda, Fargate, API Gateway, AppSync) Terraform, CI/CD, Containerisation SQL & NoSQL databases Git and automated testing Experience Required: Commercial experience ...

Remote Full Stack Engineer (Backend Heavy)

Location
Sutton, South West London, United Kingdom
modern frontend frameworks. Strong understanding of distributed systems, microservice architecture and API design. Expertise in creating secure, scalable RESTful APIs and/or GraphQL endpoints. Experience building responsive UIs using React, Next.js, Redux and TypeScript, with solid understanding of component-based architecture and state management. Proficiency in designing and optimising ...

Principal Engineer

Location
Greater London, England, United Kingdom
into our engineering processes.**Knowledge, Skills and Behaviours**Essential* Tech stack: Comfortable with TypeScript (Node.js and React), AWS (EKS, Lambda, Aurora RDS), Kubernetes and GraphQL, with extensive knowledge of JavaScript more generally, the AWS ecosystem and running containerised applications.* Past Experience: Proven experience designing large, distributed, data-driven systems ...

Agentforce Operations FDE

Location
Greater London, England, United Kingdom
vector databases, search indexes, and knowledge bases to supply agents with accurate enterprise context. Enterprise Integration & API Management: Develop and maintain custom APIs (REST, GraphQL, webhooks) and integration pipelines connecting AFO/Agentforce to Salesforce Data Cloud (Data 360), cloud warehouses (Snowflake, Databricks), and core ERPs (SAP, Oracle, NetSuite ...

Lead Solution Architect

Hiring Organisation
BP
Location
London, UK
Employment Type
Full-time
attribution, settlement, confirmations and regulatory reporting. Expert understanding of integration architecture in high-performance trading environments — including messaging (JMS, MQ, Kafka), API design (REST, GraphQL, gRPC), event-driven patterns, ETL/ELT, real-time market data connectivity and STP workflows. Strong data architecture expertise, including canonical data models, data mesh ...

Full Stack Engineer (Java + React)

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£75,000 - £85,000 per annum
principles Experience working within Agile environments Nice to Have Kotlin experience AWS experience Docker and Kubernetes Microservices architecture Event-driven systems (Kafka or similar) GraphQL What You'll Get Salary up to £85,000 Hybrid working (2 days per week in London) Private healthcare Pension contribution 25 days holiday Regular ...

Senior Full Stack Developer (C#/React/TypeScript) - REMOTE working

Location
Greater London, England, United Kingdom
architecture. Docker, Kubernetes in Azure, Vercel. Jenkins/BitBucket Pipelines for CI/CD. RabbitMQ/MassTransit. Microfrontends. Test Driven Development. RESTful API design. GraphQL APIs. Integrations with third-party APIs and SaaS platforms. Benefits Competitive salary and benefits package REMOTE working Holiday allowance 50% staff discount & 25% for family ...

Engineer C# (Full Stack)

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. ...

Senior Software Engineer

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. ...

Senior Forward Deployed ML Engineer, Agents

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 ...

Backend Developer

Location
Greater London, England, United Kingdom
application logic using modern backend languages (Node.js/Python/Go or equivalent modern stacks). Build out high-performance, well-documented RESTful and GraphQL API pipelines to serve responsive mobile and desktop client interfaces. Database & Data Infrastructure: Architect, index, and optimize relational and non-relational database layers (e.g., PostgreSQL ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
using modern tooling to improve reliability and evolve architecture pragmatically. Strong system design fundamentals across scalability, performance, and distributed systems, including API design (REST, GraphQL). Hands‐on experience with observability tooling (Datadog, Grafana, or similar) and a data‐informed approach to system health and reliability. Solid SQL and data ...

Senior Java Developer (AWS, Microservices) - Sussex

Hiring Organisation
Salt
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £700 per day
languages Hands-on experience with AWS cloud services (Lambda, API Gateway, DynamoDB, ECS, S3, etc.). Experience developing RESTful APIs Exposure to SOAP and GraphQL services. Familiarity with CI/CD pipelines (e.g., Jenkins, GitHub Actions, AWS CodePipeline). Knowledge of unit testing, integration testing, and automation testing. Awareness ...

Senior Java Developer (AWS, Microservices) - Sussex

Hiring Organisation
Salt Search
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£550.00 - £700.00 per day
languages Hands-on experience with AWS cloud services (Lambda, API Gateway, DynamoDB, ECS, S3, etc.). Experience developing RESTful APIs Exposure to SOAP and GraphQL services. Familiarity with CI/CD pipelines (e.g., Jenkins, GitHub Actions, AWS CodePipeline). Knowledge of unit testing, integration testing, and automation testing. Awareness ...

backend developer for public-sector digital services

Location
Greater London, England, United Kingdom
Nice to have: Experience with API Gateway, DynamoDB, S3, SQS, SNS, EventBridge, CloudWatch, IAM, Infrastructure as Code, AWS CDK, CloudFormation, Terraform, Node.js, RESTful or GraphQL APIs, relational or NoSQL databases, CI/CD pipelines, containerisation, Docker, messaging systems, cloud security best practices, observability, performance optimisation, large‐scale or public‐facing ...

Senior Staff Forward Deployed Engineer

Hiring Organisation
Uniphore
Location
London, UK
Employment Type
Full-time
deploying AI/ML or data-intensive applications in production Strong full-stack skills: Python, Node.js/Go, React/Vue, SQL, REST/GraphQL DevOps proficiency: Docker, Kubernetes, CI/CD, and major cloud platforms Expertise in LLMs, Prompt Engineering, Vector DBs, RAG pipelines, and Agentic orchestration frameworks Agentic ...