1 to 25 of 37 JSON Jobs in London

Dynamics Integration Specialist

Hiring Organisation
Vivo Talent
Location
Kingston Upon Thames, London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 70,000 - 71,000 Annual
Dynamics 365, including Customer Engagement (CE), Finance & Operations or Business Central. Strong hands-on experience with Dataverse Web API, REST/SOAP APIs, OData, JSON and XML. Proficiency in Azure integration services, including Logic Apps, Azure Functions, Service Bus, API Management and Data Factory, alongside Power Automate. Solid understanding ...

Integration Developer

Hiring Organisation
GCS
Location
Enfield, London, Enfield Town, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £700/day
Strong SQL and T-SQL development skills. Experience designing and supporting ETL solutions. Hands-on experience with REST and SOAP integrations. Strong knowledge of: JSON XML Data Mapping Data Transformation API Integrations Experience troubleshooting and supporting production integration services. Experience working within Agile delivery environments. Desirable Skills MuleSoft Dell Boomi ...

Senior C# .Net Developer

Hiring Organisation
ARM
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500/day Umbrella Inside IR35
Preferred Stack C# | .NET Core/.NET 8 | ASP.NET Core | REST APIs | SQL Server | Entity Framework | Azure | Azure DevOps | Git | Docker | Kubernetes | Kafka | Redis | JSON/XML | Swagger/OpenAPI Disclaimer: This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource ...

Senior C# .Net Developer

Hiring Organisation
Advanced Resource Managers Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£500.00 per day
Preferred Stack C# | .NET Core/.NET 8 | ASP.NET Core | REST APIs | SQL Server | Entity Framework | Azure | Azure DevOps | Git | Docker | Kubernetes | Kafka | Redis | JSON/XML | Swagger/OpenAPI Disclaimer: This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource ...

Senior Digital Developer – ODM

Hiring Organisation
NHS Blood and Transplant
Location
England, S75 3FG, Liverpool, L24 8RB, Birmingham, B15 2SG, London, NW9 5BG, SW17 0RB, Bristol, BS34 7QH, Barnsley, Manchester, M13 9LL, United Kingdom
Salary
£49387.00 to £56515.00
queries Other Mandatory Skills Estimation methods, SOLID design principles, Agile/Lean and Traditional Methodologies. OOAD and UML Techniques. HTML, JavaScript, JQueryXML, XSD, JSON Network architecture and protocols such as SNMP, HTTP, SOAP, REST and SOA Web Services,Testing Strategies, Testing Tools SQL Developer as testing tool, JMeter, APEXSec, cURL ...

Test Analyst / Software Tester

Hiring Organisation
AWD online
Location
Hounslow, Middlesex, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £50,000 per annum
functional, regression, integration and API testing concepts Ability to read basic technical documentation, data flows and integration diagrams Familiarity with REST/SOAP APIs, JSON, XML and integration testing basics Knowledge of SQL for data validation Experience testing within Agile delivery teams and sprint cycles Awareness of automation testing concepts ...

Murex Risk Developer

Hiring Organisation
ARM
Location
London, United Kingdom
Employment Type
Contract
users. Technical Skills Strong experience with several of the following: * SQL* Oracle/relational databases * Unix/Linux * Shell scripting * Python * Java * XML/JSON * REST APIs/integration technologies * Git or equivalent source-control tools * CI/CD and DevOps processes * Batch scheduling/enterprise schedulers Strong ...

Murex Risk Developer

Hiring Organisation
Advanced Resource Managers Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£60.00 - £63.00 per hour
users. Technical Skills Strong experience with several of the following: * SQL* Oracle/relational databases * Unix/Linux * Shell scripting * Python * Java * XML/JSON * REST APIs/integration technologies * Git or equivalent source-control tools * CI/CD and DevOps processes * Batch scheduling/enterprise schedulers Strong ...

Python Developer

Hiring Organisation
Sanderson Government and Defence
Location
City of London, London, United Kingdom
Employment Type
Contract
PostgreSQL OpenSearch Redis/Valkey GuardDuty WAF CloudTrail NGINX and containerised logging solutions. Identity and access management concepts including OIDC and SAML . JSON Schema development and validation. Technical writing and creation of integration documentation. Threat modelling and security-focused development practices. Additional Desirable Attributes Experience running technical workshops ...

Contract Quality Assurance Engineer

Hiring Organisation
Deerfoot Recruitment Solutions Ltd
Location
Hounslow, Middlesex, United Kingdom
Employment Type
Full-Time
Salary
£340.00 - £380.00 per day
control, baggage or ramp); safety-critical or regulated systems; Playwright, Selenium, Robot Framework, Cypress, Karate or Appium; Postman or SOAP UI; Jenkins and GitHub; JSON, SQL, Kafka or Grafana; performance, resilience or security testing; Python or Java; ISTQB; testing AI-powered or agentic capabilities Ready to Apply? If you want ...

Contract Quality Assurance Engineer

Hiring Organisation
Deerfoot Recruitment Solutions Limited
Location
Hounslow, London, United Kingdom
Employment Type
Contract
Contract Rate
£340 - £380/day
control, baggage or ramp); safety-critical or regulated systems; Playwright, Selenium, Robot Framework, Cypress, Karate or Appium; Postman or SOAP UI; Jenkins and GitHub; JSON, SQL, Kafka or Grafana; performance, resilience or security testing; Python or Java; ISTQB; testing AI-powered or agentic capabilities Ready to Apply? If you want ...

Dynamics 365 CE Developer

Hiring Organisation
Morson Edge
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - 550 per day
Automate flows and Canvas Apps Strong skills in Dynamics 365 CRM configuration, customisation, and integration capabilities Expertise in integration technologies like Logic Apps, HTTP, JSON Proficiency in programming languages such as .NET, C#, JavaScript Development and Project Leadership Experienced in developing Dynamics plugins and enhancing forms with JavaScript and HTML ...

Python Software Engineer Agentic AI

Hiring Organisation
Client Server
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£65,000
testing and deployment You have experience building AI agents or automating business processes using agentic technology You have experience of working with and creating JSON based REST APIs You're keen to work in a start-up environment You have excellent communication and collaboration skills You are a passionate technologist ...

iOS Developer

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £420 per day + Inside IR35
Experience implementing: MVVM MVC Clean Architecture Knowledge of dependency injection patterns. Understanding of reusable component-based development. API & Data Integration Experience consuming RESTful APIs. JSON parsing and data mapping. Authentication mechanisms including OAuth and JWT. Knowledge of asynchronous programming techniques. Data Storage Experience with: Core Data SQLite UserDefaults Cloud-based ...

Senior Business Analyst - Core Banking Transformation

Hiring Organisation
Proactive Appointments
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£550.00 - £650.00 per day
message mappings and test scenarios for treasury and payments. Strong conceptual and logical data modelling, data mapping and migration reconciliation experience. Ability to interpret JSON and XML schemas, REST APIs and event-driven API specifications. Proven experience authoring RFPs and evaluating enterprise banking software vendors. Expertise in requirements management ...

Forward Network Engineer

Hiring Organisation
Networking People (UK) Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550 per day + Inside of IR35
Point and F5 Routing and security: deep understanding of routing, VRFs, MPLS, ACLs, NAT and firewall policy Scripting: Python, REST APIs, and working with JSON and CSV data Data querying: comfortable with SQL or similar query languages Linux: platform administration, including upgrades, access control and certificates Troubleshooting: methodical diagnosis ...

Site Reliability Engineer

Hiring Organisation
JAM Recruitment Ltd
Location
London, United Kingdom
Employment Type
Permanent
Salary
£700 - £750 per day
Microsoft SQL Server (MSSQL) database administration, following industry best practices. Hands-on experience with identity brokers and modern authentication/authorisation mechanisms (e.g., JSON Web Tokens, PKI). Strong knowledge of Infrastructure as Code (IaC) tools such as Ansible for Linux provisioning and configuration management. Experience working with containerisation technologies ...

Technical Business Analyst

Hiring Organisation
Deerfoot Recruitment Solutions Limited
Location
Hounslow, London, Stanwell Moor, Surrey, United Kingdom
Employment Type
Contract
Contract Rate
£350 - £420/day Hybrid Working
airport operations (flight operations, weight and balance, load control, baggage or ramp), mission-critical, safety-critical or regulated systems, Postman or SOAP UI, JSON and log analysis, AI-DLC practices, AI-powered or agentic software Apply today with your CV for this Technical Business Analyst contract ...

Oracle EBS Technical Lead - London

Hiring Organisation
Salt
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £700 per day
Workflow Oracle Application Framework (OAF) Oracle EBS APIs & Open Interfaces Oracle Integrated SOA Gateway (ISG) REST/SOAP API Development Web Services, REST APIs, JSON, XML Oracle Integration and Middleware concepts Technical Design, Code Reviews, Unit Testing & Deployment *Rates depend on experience and client requirements ...

Oracle EBS Technical Lead - London

Hiring Organisation
Salt Search
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£500.00 - £700.00 per day
Workflow Oracle Application Framework (OAF) Oracle EBS APIs & Open Interfaces Oracle Integrated SOA Gateway (ISG) REST/SOAP API Development Web Services, REST APIs, JSON, XML Oracle Integration and Middleware concepts Technical Design, Code Reviews, Unit Testing & Deployment *Rates depend on experience and client requirements ...

Lead Network Architect with IaC - London, UK

Hiring Organisation
Randstad Digital
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £747 per day
Deep expertise in Cisco NX-OS, VXLAN BGP-EVPN, vPC, and Cisco NDFC. Infrastructure as Code (IaC) Automation: Python (REST APIs, data modeling), YAML, JSON, and Red Hat Ansible Automation Platform (AAP). CI/CD & Testing: GitHub/GitLab workflows, pyATS, and Genie for pre- and post-change validation. ...

Lead Network Architect with IaC - London, UK

Hiring Organisation
Randstad Technologies
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£600.00 - £747.00 per day
Deep expertise in Cisco NX-OS, VXLAN BGP-EVPN, vPC, and Cisco NDFC. Infrastructure as Code (IaC) Automation: Python (REST APIs, data modeling), YAML, JSON, and Red Hat Ansible Automation Platform (AAP). CI/CD & Testing: GitHub/GitLab workflows, pyATS, and Genie for pre- and post-change validation. ...

iSO Engineer

Hiring Organisation
DCV Technologies
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£425 - £500/day - Hybrid / Inside IR35
SwiftUI Solid knowledge of Core Data, Core Animation, Core Location, AVFoundation Strong understanding of MVC, MVVM, VIPER, or Clean Architecture Proficiency in RESTful APIs, JSON/XML, and third-party integrations Experience with Push Notifications, Background Tasks, App Lifecycle Management Version control with Git/GitHub/GitLab Debugging, performance ...

Senior AI Platform Engineer - MCP AWS Agentic AI

Hiring Organisation
Method-Resourcing
Location
London, United Kingdom
Employment Type
Contract
development. Experience taking ownership of complex engineering projects, making architectural decisions and mentoring other engineers. Desirable: Python, FastAPI, LangGraph, LangChain or similar AI frameworks. JSON-RPC, SSE, WebSockets and event-driven architectures. Experience with RAG, LLM function calling and context management. An interest in sport and the sports betting industry. ...

Senior AI Platform Engineer - MCP | AWS | Agentic AI

Hiring Organisation
Method Resourcing
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
development. Experience taking ownership of complex engineering projects, making architectural decisions and mentoring other engineers. Desirable: Python, FastAPI, LangGraph, LangChain or similar AI frameworks. JSON-RPC, SSE, WebSockets and event-driven architectures. Experience with RAG, LLM function calling and context management. An interest in sport and the sports betting industry. ...