1 to 25 of 39 GraphQL Jobs in London

Lead Developer AI

Hiring Organisation
Datatech Analytics
Location
London, United Kingdom
Employment Type
Permanent
Tech environment - Not set in Stone Frontend: React, Next.js, TypeScript (or similar) Backend: Node.js (Express, NestJS) or Python (FastAPI, Django) (or similar) APIs: REST, GraphQL (or similar) Databases: PostgreSQL, MongoDB (or similar) AI/Data: Experience integrating AI/ML features via APIs (e.g. OpenAI, Anthropic or similar) Exposure ...

Lead Software Engineer - Android

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
framework Building applications using React Nativein TypeScript or JavaScript Native application development across Android/iOS in Kotlin/Swift Understanding of REST APIsand GraphQL Comfortable working with projects partially or fully using TypeScript End to end testing applications with Detox/Appium/WebdriverIO/Playwright Hands‐on experience ...

Senior Software Engineer – AI / Agentic Systems

Hiring Organisation
MA (Montreal Associates)
Location
City of London, London, United Kingdom
scaling distributed systems or cloud-native platforms (AWS preferred) Experience delivering end-to-end solutions in production environments Technical Skills API development ( REST/GraphQL ) and third-party integrations Strong knowledge of databases (SQL & NoSQL) Experience with event-driven systems/messaging (Kafka, RabbitMQ, SQS, etc.) Solid understanding of system ...

OSS/BSS Solution architect

Hiring Organisation
IBU CONSULTING LTD
Location
London, United Kingdom
Employment Type
Contract
read and write API specs - Hands-on with TMF/ODA frameworks for product and service APIs - Expertise in integration patterns ( OpenAPI , REST, gRPC , GraphQL ) - Strong background in pub/sub and event brokers (Kafka, RabbitMQ) including security (TLS/SASL), scaling and schema evolution - Knowledge of headers, correlation/ ...

Senior Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
stack or any specific functional area, but you have a strong willingness to learn and adapt quickly. Typescript/Node.js, Python, REST API/GraphQL APIs, Ruby/Rails, React, AWS/Serverless or EKS, PostgreSQL, DynamoDB, OpenSearch, Redis Why join us? Key moment to join Aircall in terms ...

Senior Full-Stack Engineer—TypeScript, AWS & GraphQL

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
WorksHub is seeking a Senior Engineer in Greater London to design and maintain robust full-stack solutions using TypeScript, AWS, and GraphQL. The ideal candidate should have proven experience in software engineering roles with deep ...

Specialised Engineer HCL Commerce

Hiring Organisation
Vallum Associates Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £500 to £550 per day
releases, rollbacks, and platform improvements Essential Skills & Experience Strong hands-on experience with HCL Commerce/IBM WebSphere Commerce architecture Proficiency in Java, J2EE, GraphQL, and RESTful APIs Experience with Spring/Spring Boot backend development Strong knowledge of relational databases, particularly Oracle Experience with tools such as Eclipse ...

Software Engineer

Hiring Organisation
Chumley
Location
City of London, London, United Kingdom
Strong proficiency with React , modern JavaScript/TypeScript, and Vite or equivalent tooling. Back-end experience (e.g. Node.js or similar) with RESTful or GraphQL APIs. Experience integrating or working with Salesforce (APIs, webhooks, or data pipelines). Good understanding of application architecture, performance, and security. Comfort working in a small ...

Head of Software (ML & Web)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
embedded systems integration. Background or interest in scientific/biological domains. Our Tech Stack (Current & Planned) Frontend: React, TypeScript Backend: Node.js, Python, REST & GraphQL APIs Cloud & Infra: AWS (ECS, S3, Lambda), Docker, Cloudformation, Pulumi, CI/CD with GitHub Actions ML/AI: PyTorch, TensorFlow, scikit‐learn, MLflow for experiment ...

Senior Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
understanding what needs to be built, to getting it into the hands of customers, to making sure it stays running. Our stack: AWS, MongoDB, GraphQL, React, TypeScript, Python, Terraform. We have strong DORA metrics, we pair program, we deliver value in small increments and observe change. The tooling and process ...

Senior Software Engineer - Loyalty

Hiring Organisation
Jobleads-UK
Location
City of Westminster, England, United Kingdom
part of our modernisation drive, will continue to introduce new ones. Technologies you may work with include: Java, node.js JUnit, Mockito, testcontainers Micronaut, GraphQL , gRPC Azure Cloud, Kubernetes GitHub Actions, Dynatrace Snyk , Semgrep , Wiz Java, Spring, Micronaut SQL Server, MongoDB Redis, Ignite What’s In It For You Working ...

Senior Software Engineer I

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
contributing to code Our Tech Stack Find below a small reflection of our current tech stack: Frontend: React Native (iOS and Android) Typescript GraphQL (Apollo Client) Fastlane SwiftUI (Apple Watch) Maestro E2E tests Backend: Serverless (AWS) Lambdas (NodeJS & Python) AWS AppSync DynamoDB, S3, SQS, SNS, EventBridge, SageMaker Snowflake ...

Senior Software Engineer, Internationalisation Platform London, UK

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
product area. Experience with AWS or any similar cloud provider Experience with billing systems in multiple currencies Technologies we use (not exhaustive) REST, GraphQL, JSON Schema, JSON:API CDNs (Fastly, Cloudflare) GitHub, BuildKite MySQL, Redis, Pulsar, Memcache DeepL, Smartling, Stripe Amazon Web Services (EC2, RDS, Aurora, AWS Translate, etc.), Terraform ...

Contract Senior Software Engineer (Java or Python)

Hiring Organisation
SoCode Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 650 - 700 Daily
evaluate AI-generated code for correctness, security, and financial accuracy Desirable, but no essential: Experience with Apache Airflow or similar workflow schedulers REST or GraphQL API design experience Knowledge of fixed income, FX, or derivatives products and associated P&L/risk methodologies ...

Contract Senior Software Engineer (Java or Python)

Hiring Organisation
SoCode Limited
Location
London, Baker Street, United Kingdom
Employment Type
Contract
Contract Rate
£650 - £700/day
evaluate AI-generated code for correctness, security, and financial accuracy Desirable, but no essential: Experience with Apache Airflow or similar workflow schedulers REST or GraphQL API design experience Knowledge of fixed income, FX, or derivatives products and associated P&L/risk methodologies ...

Senior TypeScript/Node.js Backend Engineer — AWS & GraphQL

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Houseful is seeking a passionate Software Engineer to join their team in London. The role involves developing critical backend services using TypeScript, Node.js, and Apollo GraphQL. Ideal candidates should have a strong background in modern ...

Software Engineer Middle/Back Office Asset Manager (Contract)

Hiring Organisation
Alexander Ash Consulting Limited
Location
Central London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £700 to £800 per day
Cursor, GitHub Copilot) with significant examples of delivery improvement AWS (S3, Lambda, EC2, Glue), Snowflake, Git, CI/CD, Datadog, MS SQL Server, REST, GraphQL, Airflow (as many as possible) Degree educated or higher in a relevant technical discipline from a leading university This is a £650-700/ ...

Senior Presales Engineer

Hiring Organisation
Uniphore
Location
City of London, London, United Kingdom
security: designing, integrating, and securing API connections between AI platforms and business applications (e.g., CRM, ERP, data warehouses), with knowledge of protocols (REST, GraphQL) and authentication mechanisms (OAuth 2.0, API keys). Data and network architecture acumen – ability to discuss and propose solutions around data governance, network segmentation, and enterprise ...

Senior Software Engineer - Core Video & Data New London, United Kingdom

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
enjoy helping fellow engineers hone their skills through code reviews and pair programming. Nice-to-Haves Tech stack knowledge. Professional background in C#, GraphQL, Elastic, MongoDB and AWS is ideal. Experience with media at scale. You’ve worked with video encoding and on-demand rendering in a professional setting. Passion ...

Senior Pre-Sales Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
security: designing, integrating, and securing API connections between AI platforms and business applications (e.g., CRM, ERP, data warehouses), with knowledge of protocols (REST, GraphQL) and authentication mechanisms (OAuth 2.0, API keys).* Data and network architecture acumen – ability to discuss and propose solutions around data governance, network segmentation, and enterprise ...

Senior C# / React Developer - Energy Trading - London

Hiring Organisation
Options Group
Location
City of London, London, United Kingdom
with React Experience working in an agile scrum development model University degree (Bachelor or Master) in Computer Science or Maths Desirable Skills: Experience in GraphQL or gRPC Experience in Reactive Extensions (RX) Previous experience in the commodities or finance industry (hedge fund, investment banking, private banking, fintech ...

Senior Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
solutions and build the best products. The team have moved their environment solely on Typescript and and its associated frameworks (React AND Node) with GraphQL for API’s which is all within a AWS cloud environment. Alongside the technical aspect it is also crucial to be able to manage ...

IT Integration Developer

Hiring Organisation
Profectus Recruitment
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum, Inc benefits
Services including Logic Apps, Azure Functions and API Management • Create event driven integration patterns and data flows between multiple systems • Work with REST and GraphQL APIs alongside modern authentication technologies including OAuth2, OpenID Connect and SAML • Ensure secure by design principles are embedded throughout all integration architecture • Produce and maintain ...

Founding Data Engineer

Hiring Organisation
Edison Hill Search
Location
NW5, Kentish Town, Greater London, United Kingdom
Employment Type
Permanent
Salary
£75000 - £100000/annum Benefits & Meaningful Equity
structured and unstructured data sources, orchestration tooling, and distributed storage. RDS Postgres, MongoDB, AWS Athena, Parquet, AWS Glue, Airflow, Python, Docker, S3, GraphQL, REST. You won't know all of it, you'll be strong in your core area and curious about the rest. Nice to have : Python proficiency ...

React Native Lead Developer

Hiring Organisation
Hunter Bond
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 95,000 Annual
amazing opportunity! The following skills/experience is essential: Strong React Native development background Demonstrable experience delivering applications in both iOS and Android GraphQL and Restful APIs Solid understanding of the full mobile development life cycle Good communication skills Salary: Up to £95,000 + bonus + package Location: London ...