14 of 14 Permanent GraphQL Jobs in the City of London

Contract Full Stack Engineer (Commodities)

Hiring Organisation
X4 Technology
Location
City of London, Greater London, UK
TypeScript Advanced Python expertise including OOP, async programming, and frameworks such as FastAPI, Flask, or Django Proven experience building and integrating RESTful and GraphQL APIs Understanding of Backend-for-Frontend (BFF) architecture patterns Experience optimising low-latency, high-throughput systems through caching, async I/O, and database tuning Cloud ...

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 ...

Lead Software Engineer (Python)

Hiring Organisation
Circuit Mind
Location
City of London, London, United Kingdom
models. Learn, use, and improve best practices and processes for high-quality software development. Our technology stack includes Python 3.11, PostgreSQL, Django, mypy, GraphQL, Docker, Redis, Typescript, React. Qualifications We’re only considering exceptional candidates, with the following pre-requisites: 5+ years of professional software development experience. 2+ years ...

Full Stack Software Engineer (AI-Native) | React / Node.js | Remote

Hiring Organisation
Propel
Location
City of London, London, United Kingdom
output Strong understanding of clean code, architecture, and software fundamentals Interest in building scalable products with real-world impact Nice to Have Python, PostgreSQL, GraphQL, AWS or GCP Side projects, open-source contributions, or startup experience Interest in AI, automation, or enterprise software Location Remote across: United Kingdom No visa ...

Principal Software Engineer

Hiring Organisation
Formula
Location
City of London, Greater London, UK
everyday engineering workflows~ Key Requirements: A strong track record delivering large-scale distributed systems in cloud environments Deep knowledge of API design - REST and GraphQL, and substantial hands-on experience with Kafka in a production environment Solid cloud platform experience, particularly AWS, and comfort with containerised infrastructure Proficiency in TypeScript ...

Golang engineer

Hiring Organisation
Qualient Technology Solutions UK Limited
Location
City of London, Greater London, UK
Behavior Driven Development (BDD) and Waterfall) . Knowledge of any or all of the following technologies is desired: Kafka, Postgres, Golang, Git, gRPC, Docker, GraphQL . Experienced in continuous integration (CI), continuous deployment (CD) and continuous testing (CT), including tools such as Jenkins, Rally and/or JIRA and version ...

Front-End Engineer (React) : Trading : £120-180k plus excellent bonus : London

Hiring Organisation
Hunter Bond
Location
City of London, London, United Kingdom
data, or real-time UI updates D3.js, charting libraries, or custom data visualisation Backend languages such as Python, C++, Java, or Go Familiarity with GraphQL, RESTful APIs, or event-driven systems Nice to Have (But Not Required) Exposure to financial markets, trading systems, or time-series data Experience working closely ...

Backend Engineer – C#, .Net, Azure | Payments Financial Services | £600/day outside IR35| Hybrid

Hiring Organisation
VirtueTech Recruitment Group
Location
City of London, London, United Kingdom
.Net, Azure, SQL You will need to have: Expert in the latest versions of .NET Framework and .NET Core (C#) Experience in API (REST, GraphQL) design and development Experience in relational database design and optimization (MSSQL, MySQL, etc.) Experience in the deployment and management of cloud (AWS, Azure, etc.) assets ...

Principal Engineer

Hiring Organisation
Formula
Location
City of London, London, United Kingdom
Infrastructure as Code, and automated testing Embedding AI-powered capabilities into engineering workflows Skills and requirements: TypeScript, Node.js, AWS (EKS, Lambda, Aurora RDS), Kubernetes, GraphQL, Kafka, Terraform, DataDog Salesforce or enterprise CRM experience is a strong advantage Contract details: IR35: Up to £650PD Outside IR35 Contract length: 3 months rolling ...

Python Developer

Hiring Organisation
Digisourced
Location
City of London, London, United Kingdom
Agile framework. Key Requirements: Languages/Frameworks: Python (Django, FastAPI, Flask). AWS Ecosystem: Lambda, S3, RDS, DynamoDB, VPC, Step Functions. API Design: RESTful, GraphQL, AppSync. IaC: Terraform or AWS CDK. CI/CD: GitLab Cloud, GitHub Actions, or AWS CodePipeline. Experience: Typically 10+ years of professional cloud engineering experience. ...

Senior Python Developer

Hiring Organisation
TreasurySpring
Location
City of London, London, United Kingdom
frontend systems include our clean, simple web portal for client order capture and reporting, built in TypeScript and React; with server-side REST and GraphQL APIs written in Python3. What we’re looking for... Essential skills and experience: 5+ years experience of developing complex applications using an OO language (ideally … Alembic, Pydantic Experience with relational databases, ideally Postgres Experience of message-based architectures, and queuing technologies, i.e. RabbitMQ Experience of REST and/or GraphQL APIs Knowledge of the core AWS services: i.e. EC2/ECS, RDS, S3 Experience using DataDog or similar observability tools Knowledge of containerisation: Docker, Kubernetes ...

Lead Android developer

Hiring Organisation
RED Global
Location
City of London, London, United Kingdom
quality Build scalable apps using Kotlin, Java, Android SDK Define architecture ( MVVM, Clean Architecture ) Collaborate with Product, Design, QA, Backend teams Integrate REST/GraphQL APIs and third-party SDKs Manage CI/CD pipelines and release processes Ensure performance, security, and app stability Requirements 10+ years Android experience, including ...

Software Engineer

Hiring Organisation
LTM
Location
City of London, London, United Kingdom
into projects. Develop scalable backend services using Golang, NestJS, and TypeScript. Work with PostgreSQL and DynamoDB databases to manage data efficiently. Build and maintain GraphQL APIs for seamless data querying. Utilize AWS services including API Gateway, Lambda, RDS, S3, Step Functions, SNS, and SQS to deploy and manage cloud-native … framework. Proficiency in Golang, ReactJS, and TypeScript. Familiarity with AWS services. Experience with microservices architecture. Preferred Skills Experience with PostgreSQL and DynamoDB. Knowledge of GraphQL APIs. Experience with Docker. ...

Senior Frontend Engineer (React Native) – Fintech | London (Hybrid)

Hiring Organisation
Albert Bow
Location
City of London, London, United Kingdom
Doing • Build and optimise mobile-first applications using React Native (majority of work) • Contribute to web features using React • Integrate APIs using GraphQL & REST • Own features end-to-end — from design to deployment • Improve performance, reliability, and scalability of frontend systems • Work cross-functionally in a product-driven squad model … Requirements: Strong experience with React Native (non-Expo, production-level apps) Solid fundamentals in React & modern JavaScript (ES6+) Experience integrating GraphQL/REST APIs Strong understanding of mobile performance, debugging, and lifecycle Background in fintech, payments, or data-sensitive applications Ability to communicate clearly with technical & non-technical stakeholders Experience ...