1 to 25 of 181 REST Jobs in London

Data Scientist & ML Specialist — Contract Role

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
packages in Python, including numpy, pandas, matplotlib, etc. Familiar with relational & non‐relational databases such as SQL Server, MySQL, Mongo. Experience interacting with REST APIs. Developed web services and used JSON as a data exchange format. Nice to have - Experience with AWS. Nice to have - Experience working in an agile ...

UI Architect

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £570 per day
within complex environments Expertise in React, JavaScript (ES6+), TypeScript, HTML5 and CSS3 Experience designing SPA or micro-frontend architectures Strong understanding of API integration (REST, API gateway patterns, BFF) Experience working in cloud environments such as AWS or Azure Exposure to Docker, Kubernetes and CI/CD pipelines Strong focus ...

Junior Software Engineer (Java / Kotlin / JVM)

Hiring Organisation
Salt Search
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£200 per day
Good communication skills and the ability to work collaboratively across technical and non-technical teams Useful Technical Experience * Kotlin * Java * JVM * Ktor or Spring * REST APIs * PostgreSQL * MongoDB * Redis * GitHub Actions or other CI/CD tools * Docker * Kubernetes * AWS, GCP or Azure * Monitoring and logging tools such as CloudWatch ...

AI Lead Engineer

Hiring Organisation
167 Solutions Ltd
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
testing and evaluation Prompt Engineering and AI workflow optimisation Programming & Frameworks Strong Python development skills PyTorch TensorFlow Scikit-Learn LangChain LangGraph Hugging Face FastAPI REST APIs Data Technologies SQL NoSQL Databases Data Modelling ETL Development Data Pipeline Engineering Vector Databases such as Pinecone, Weaviate or ChromaDB Cloud & DevOps Experience with ...

Software Engineer / Developer (All Levels) - UK Wide

Hiring Organisation
describe.me
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £140,000 per annum
Hands-on experience with modern frameworks (Spring, .NET, Django, FastAPI, Rails, Express/NestJS, Laravel, React, Vue, Next.js, Angular or equivalent) Solid grounding in REST and/or GraphQL API design Working knowledge of relational and NoSQL databases—query design, indexing, schema modelling Familiarity with containerisation (Docker) and orchestration concepts ...

Senior Full Stack Developer .Net / C# / React

Hiring Organisation
Opus Recruitment Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £475 per day
with both technical and non-technical stakeholders. Tech Stack Frontend React JavaScript/TypeScript HTML5, CSS3 Backend C# .NET Core/.NET ASP.NET Core REST APIs Cloud & Data Microsoft Azure SQL Server Docker CI/CD Pipelines Microservices Essential Skills & Experience Strong commercial experience with C#/.NET and React. ...

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

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
research 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 ...

Senior Software Engineer

Hiring Organisation
Awin
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
Java/Spring Passion for clean, maintainable code with a strong understanding of SOLID principles Hands-on experience designing AWS-based systems, microservices with REST APIs, and event-driven architectures Focus on engineering quality through code reviews, testing, and test strategy improvement Responsibility for maintaining CI/CD pipelines ...

AI Coder/Senior Full-Stack Engineer (.NET / React) — Remote, UK

Hiring Organisation
Event Solutions
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
success. Back-end: C#, .NET, Node.js Front-end: JavaScript/TypeScript, React, Next.js Cloud & Architecture: AWS (provisioned with Terraform), microservices, distributed systems, scalable REST APIs. Our environment is a hybrid — the newer stack runs on AWS with Azure Service Bus for messaging, while the legacy/static side still lives ...

Dell Boomi Integration Consultant

Hiring Organisation
Oscar Associates (UK) Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550 per day
profile configuration Create and manage secure Managed File Transfer (MFT) workflows to support high-volume and sensitive data transfers Publish, secure and govern REST/SOAP APIs through Boomi API Management, including gateway configuration, throttling and developer portal management Develop and maintain CI/CD pipelines using Git, Azure DevOps ...

Lead Solution Architect Endur (ETRM Gas & Power Trading)

Hiring Organisation
BP Energy
Location
South West London, London, United Kingdom
Employment Type
Work From Home
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 ...

Python Developer

Hiring Organisation
Brio Digital
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 550 Daily
technical design discussions Essential Skills & Experience Strong commercial experience developing applications with Python Proven hands-on experience with Microsoft Azure Experience building and consuming REST APIs and microservices Strong understanding of cloud architecture and Azure services Experience with CI/CD pipelines and DevOps practices Familiarity with Git and modern ...

Python Developer

Hiring Organisation
Brio Digital
Location
London, Baker Street, United Kingdom
Employment Type
Contract
Contract Rate
£550/day
technical design discussions Essential Skills & Experience Strong commercial experience developing applications with Python Proven hands-on experience with Microsoft Azure Experience building and consuming REST APIs and microservices Strong understanding of cloud architecture and Azure services Experience with CI/CD pipelines and DevOps practices Familiarity with Git and modern ...

CRM Full Stack Software Engineer

Hiring Organisation
Elliot Marsh Head Hunting Partners
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
distributed services CRM Full Stack Software Engineer – You - Commercial experience with TypeScript, Node.js and React - Experience with Next.js and modern frontend development - Strong REST API and microservices experience - Knowledge of PostgreSQL and MongoDB - Experience with Docker, CI/CD and cloud platforms (AWS desirable) - Experience of Agile software development - Knowledge ...

Senior Software Engineer

Hiring Organisation
Fruition Group
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 90,000 Annual
5+ years professional software engineering experience Strong TypeScript, Node.js and React experience Experience designing, building and operating production Back End services Strong grasp of REST APIs, auth/authorisation and data modelling (MongoDB or similar) Experience with event-driven/message-based systems (SNS/SQS, Kafka or RabbitMQ) Solid ...

Solution Architect

Hiring Organisation
Randstad Technologies
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 per day
frameworks. Cloud & Infrastructure: Proven experience with Cloud platforms ( AWS & Azure ), serverless deployments, and containerization optimization. Experience executing cloud migrations. Architecture & APIs: Strong background in REST APIs, API integration, and event-driven architecture. Comfortable using architecture modeling techniques (UML, C4). Security Expertise: Deep understanding of application security, access control, Single ...

Go Full Stack Developer

Hiring Organisation
itecopeople
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£60,000
Skills & Experience We are looking for candidates with strong commercial experience in: Go/Golang backend development Full stack software engineering within Agile environments REST APIs, integrations and distributed systems React and modern frontend development CI/CD, Git and cloud-based delivery practices Docker and Kubernetes Code reviews, testing ...

Java & React

Hiring Organisation
Randstad Technologies
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £60,000 per annum
handle heavy datasets efficiently. Engineer cloud-native solutions by designing, maintaining, and deploying applications leveraging Kubernetes and Amazon AWS. Design and integrate APIs using REST and gRPC to ensure seamless connectivity between the frontend and backend. Implement event streaming by integrating Kafka for real-time financial data processing. Lead ...

Senior Java Backend Developer

Hiring Organisation
McGregor Boyall
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£750 - £900 per day
robust, scalable Java applications. What You'll Do Design and develop backend applications using Java and Spring Boot Build and enhance scalable microservices and REST APIs Drive architectural decisions focused on performance, security and scalability Work across the full software development lifecycle, from design through to deployment and production support ...

Senior Backend Dev (Node.JS)

Hiring Organisation
Tiro Partners Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £95,000 per annum
contributing to the design of scalable software solutions. Typical responsibilities include: Building and maintaining backend applications using Node.js and Typescript. Developing secure and reliable REST APIs. Working with PostgreSQL and writing efficient database queries. Identifying and resolving software defects and performance issues. Creating automated tests to improve software quality. Reviewing ...

QA Engineer

Hiring Organisation
E-Solutions
Location
City of London, London, United Kingdom
testing event-driven and serverless architectures Test Automation & Tools Experience with: Automation frameworks (Jest framework, Java/Springboot, or similar) API testing tools (Postman, REST clients) Ability to: Create automated test suites Validate JSON-based inputs/outputs for APIs and events Knowledge of: BDD frameworks (Cucumber - good to have ...

Applications Engineer

Hiring Organisation
Picture More
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£75,000 - £90,000 per annum
hands-on technical experience in at least one of the following areas: Azure Integration Services, Logic Apps, Function Apps, API Management or Service Bus REST APIs and systems integration SQL Server, data flows, ETL, reporting or database development Power Platform, Power Apps, Power Automate, Power BI or Microsoft Fabric C# ...

IT Development Team Lead (Full Stack)

Hiring Organisation
Euro Car Parks
Location
Central London, London, United Kingdom
Employment Type
Permanent
DevOps CI/CD processes, Service bus Architecture, Microservices, Functions, Web apps, IAC Experience with AI driven development tools such as Claude Experience developing REST API-driven mobile first web applications Experience of frontend application development, with a focus on React.js, Next.js and TypeScript Jira, Bitbucket, Git Flow, Confluence, Azure ...

Software Engineer (Backend)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
experience or demonstrable learning is 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 ...

Senior AI Platform Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
intelligent workflows, or orchestration frameworks. Backend & Platform Engineering Strong backend engineer with production experience using Python and/or TypeScript. Designed scalable backend services, REST APIs, and event‐driven architectures. Experience building reusable platform capabilities, internal developer tooling, SDKs, or shared engineering services. Cloud & Infrastructure Strong experience building cloud‐native ...