10 of 10 Contract REST Jobs in the City of London

Full Stack Developer

Hiring Organisation
Devonshire Hayes Recruitment Specialists Limited
Location
City of London, London, England, United Kingdom
Employment Type
Contractor
Contract Rate
£45,000 - £65,000 per annum
trading environments Experience with WebSockets or SignalR for real-time communication Backend development experience with .NET (C#) and/or Python Strong understanding of REST APIs and microservices architecture Experience with message brokers (e.g. RabbitMQ or Kafka) Knowledge of caching technologies (e.g. Redis) Experience with Azure DevOps/CI/ ...

Senior FullStack Developer

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650/day
architectures, and creating a reusable component library Experience with Telemetry and observability of front-end applications Back-end: Expertise in C# .NET Core , C#, REST APIs, Web APIs, and microservices-based development. Experience in transforming monolithic applications into composable microservices, or modular monoliths is a plus. Python (pyspark): Some hands ...

Data Engineer

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £560 per day
platforms and services. Maintain data quality, security, and compliance across workflows. What you'll bring: Strong programming skills in Java. Hands-on experience developing REST APIs or microservices with Spring Boot. Experience containerising applications with Docker. Understanding of relational and NoSQL databases. Familiarity with modern data architectures (ETL/ ...

Senior Full Stack Engineer

Hiring Organisation
Access Computer Consulting
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £440/day
React, Kubernetes & Docker. Experience in building responsive, component based user interfaces using modern front end frameworks. Hands on expertise in API design and development (REST/JSON), including versioning and backward compatibility. Experience with UI testing, component testing, and front end build tooling. Experience in CI/CD pipelines, GitOps ...

Senior C# Engineer - Agentic AI, AWS, .Net 9

Hiring Organisation
Smart Sourcer Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £800 to £900 per day
level backend engineer with deep, current expertise in C# and .NET Core 8/9 , capable of architecting and leading the design of distributed REST API microservices at scale. Authority in AWS serverless architecture; Lambda-first, with strong working knowledge of API Gateway, SQS, Step Functions, EventBridge ...

Test Director ALM/QC

Hiring Organisation
Infoplus Technologies UK Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £800 to £850 per day
Technical Expertise (Exceptional Level) 2025+ years in QE engineering, transformation, and automation leadership. Mastery of: o Playwright, Appium, Selenium, Cypress, Java o API Automation (REST Assured, Karate, Postman) o Performance (JMeter, LoadRunner) o Cloud native testing (Azure, AWS, GCP) o Test orchestration, CI/CD pipelines o TDM, environment strategy ...

Data Engineer

Hiring Organisation
Taylor Hopkinson Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Databricks and Azure (ADLS Gen2, ADF or equivalent). * Proven ability to implement Medallion architecture or equivalent layered data modelling patterns. * Experience with REST API ingestion and integration of business systems (ERP, finance tools). * Experience in a contractor or project-based delivery model preferred. * Exposure to OT/SCADA ...

Network Observability Engineer

Hiring Organisation
Hays
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£700.0 - £750.0 per day + Inside IR35
using tools such as SevOne, ThousandEyes, Grafana, Datadog, NetBrain, and Cisco ACI/NDO. Proven ability to drive network automation and diagnostics, leveraging Python, REST APIs, Ansible, executable runbooks, and intent-based approaches. Hands-on experience with high-volume analytics and time-series data, including ClickHouse or similar platforms ...

Oracle Integration Cloud Developer

Hiring Organisation
ARM
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £600/day Inside IR35
applications to ensure seamless data flow and business process automation. Key Responsibilities: Design and develop integrations using Oracle Integration Cloud (OIC) Build and maintain REST/SOAP APIs and integrations Work with adapters (ERP, HCM, FTP, REST, SOAP, etc.) Perform data mapping, transformations, and orchestration Troubleshoot and resolve integration issues … with functional and technical teams Ensure best practices in integration, security, and performance Required Skills: Strong experience with Oracle Integration Cloud (OIC) Knowledge of REST/SOAP web services Experience with XML, XSLT, JSON Familiarity with Oracle SaaS (ERP/HCM) integrations Understanding of integration patterns and workflows Preferred Qualifications ...

ServiceNow Developer - IRM Specialist

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£500 - £560 per day
technical skills to configure and administer ServiceNow IRM/GRC modules, including Flow Designer, ACLs, scripting (Glide), and CMDB relationships. Integrate risk data via REST APIs, MID Server, and data imports, ensuring seamless data flow and automation. What you'll bring: Proven experience configuring and managing ServiceNow IRM/… platform, including scripting, Flow Designer, and ACLs. Experience with risk registers, scoring models, control frameworks, and policy workflows. Familiarity with integration methods such as REST APIs and data imports. Ability to partner effectively with business stakeholders and translate requirements into technical solutions. This role offers an exciting chance to contribute ...