1 to 25 of 76 Permanent JSON Jobs in London

QA/Test Engineer

Hiring Organisation
Version 1
Location
London, UK
Employment Type
Full-time
following technologies Java, Selenium, Cucumber BDD, REST Assured, BrowserStack, Postman/Bruno, PostgreSQL, Microsoft Azure, Azure DevOps (sprint backlogs, pipelines, test plans), GIT, YAML, JSON, OpenText Web Inspect, JMeter Highly skilled in creating, maintaining and peer reviewing test automation code, preferably in Java Previous working experience supporting, contributing ...

QA Automation Engineer / Consultant

Hiring Organisation
Methods Consulting
Location
London, UK
Employment Type
Full-time
experience with Serenity BDD, Cucumber/Gherkin, Selenium WebDriver and REST Assured, supported by frameworks such as JUnit and AssertJ.Strong understanding of REST APIs, JSON, authentication, validation and error handling. Experience testing distributed or microservice-based applications, including asynchronous processing and messaging. Ability to verify complete business workflows across service ...

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 ...

C# Senior Developer

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
MSMQ or RabbitMQ Experience of web technologies including HTML, CSS, JavaScript, jQuery and web client frameworks such as Knockout.js or Angular Experience of XML, JSON and related like schemas and XSLT transformations Experience of T-SQL for Microsoft SQL Server (2012 or higherThis role is for candidates who are looking ...

Senior C# .Net Developer

Hiring Organisation
Advanced Resource Managers (A.R.M.)
Location
London, UK
Employment Type
Full-time
coding Preferred StackC# | .NET Core/.NET 8 | ASP.NET Core | REST APIs | SQL Server | Entity Framework | Azure | Azure DevOps | Git | Docker | Kubernetes | Kafka | Redis | JSON/XML | Swagger/OpenAPIDisclaimerThis vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering ...

Senior Microsoft Power Platform and AI Developer

Hiring Organisation
Methods Consulting
Location
London, UK
Employment Type
Full-time
tools, or equivalent tool-based agent integration patterns, including troubleshooting identity, permissions and data flow. Strong API and integration skills, including REST/JSON, custom connectors, OAuth 2.0, Microsoft Entra ID and secure secrets management. Pro-code engineering capability in one or more languages such as TypeScript/JavaScript, C# ...

Fixed Income E-Trading Senior Java Developer - Vice President

Hiring Organisation
Citigroup
Location
London, UK
Employment Type
Full-time
Agile globally distributed team using tools such as Jira, Bitbucket, Sonar & Team CityWorked with tools such as IntelliJ, Gradle, etc.,Experience on JSON/XML and REST serviceEducation: Bachelor's degree/University degree or equivalent experienceCompetencies: Excellent communication skills, oral and written; ability to face off to business users. ...

Technical Power Platform Consultant

Hiring Organisation
Mphasis
Location
City of London, Greater London, UK
Experience with Power BI, DAX, Power Query, and data modeling. Knowledge of SharePoint, Microsoft Teams, Azure Logic Apps, and Microsoft 365 ecosystem. Experience with JSON, REST APIs, and scripting (e.g., PowerShell or JavaScript). Familiarity with Agile methodologies and DevOps practices. Excellent problem-solving, communication, and interpersonal skills. Preferred Qualifications ...

Lead Developer- C#

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
MSMQ or RabbitMQ Experience of web technologies including HTML, CSS, JavaScript, jQuery and web client frameworks such as Knockout.js or Angular Experience of XML, JSON and related like schemas and XSLT transformations Experience of T-SQL for Microsoft SQL Server (2012 or higherThis role is for candidates who are looking ...

Application Developer (IT) - London - FTC

Hiring Organisation
Saffery
Location
London, UK
Employment Type
Full-time
Copilot Studio. Some experience working with Microsoft Foundry would be beneficial. Working knowledge of Dataverse, solution management, and ALM concepts. Understanding of PowerFX, JSON, JavaScript and basic API/integration principles. Familiarity with Microsoft 365 and Azure fundamentals. Experience working in a structured development environment (e.g., DevOps).Strong problem-solving ...

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 ...

Java Developer

Hiring Organisation
Hastings Direct
Location
London, UK
Employment Type
Full-time
level applications. Experience of Java/JVM/Spring based languages Object oriented analysis and design Source Management software such as GitHub SOAP, REST, JSON, XMLJSON & XML; HTML; CSS and JavaScript Knowledge of a Test driven approach including exposure to either TDD or BDD would be an advantage Desirable Experience ...

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 ...

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 ...

Golang Software Engineer

Hiring Organisation
InfoSum
Location
London, UK
Employment Type
Full-time
times in the performance of duties for InfoSum. Requirements4+ years experience with Go; JavaScript experience would be nice to have. Familiarity with api-design, json schemas and docker. Strong understanding of software development methodologies, design patterns, and best practices. Familiarity with database technologies (e.g., SQL) and data modeling concepts. Knowledge ...

Technical Architect Fintech

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
various application software and hardware components Excellent understanding of programming language, frameworks and processes (C#, C++, SQL Server, Java, ASP.NET MVC, WCF, HTML, XML, JSON, CSS, Bootstrap, AJAX, jQuery, UML, REST API, React, AngularJS) Experience of conceptual, logical and physical data modelling Excellent understanding of cloud based infrastructure and software ...

Lead Network Engineer

Hiring Organisation
Kroll
Location
London, UK
Employment Type
Full-time
with, or a strong interest in developing, network automation and NetDevOps practices using Ansible, Python, APIs, Terraform, Git, and structured data formats such as JSON or YAML.Experience using source control, peer review, automated validation, or CI/CD concepts to support safe and repeatable infrastructure changes. Experience with network monitoring ...

Senior Data Engineer

Hiring Organisation
Cushman & Wakefield
Location
London, UK
Employment Type
Full-time
Advanced SQL, including window functions, query optimization, and MERGE/UPSERT operations. Python and PySpark. You write reusable, parameterized functions and work comfortably with JSON, CSV, and Parquet. Platform knowledge Deep experience with Databricks (Declarative Pipelines, DABS, Delta Lake, Spark optimization, job orchestration). Familiarity with the Azure ecosystem. Working ...

Product Consultant, GenAI & Agentic Solutions

Hiring Organisation
Moody's Corporation
Location
London, UK
Employment Type
Full-time
software, data or analyticsStrong client-facing delivery experience, including requirements gathering, solution configuration, stakeholder management, onboarding and trainingWorking knowledge of RESTful application programming interfaces, JSON, data integration principles and enterprise technology ecosystems. Familiarity with SOAP application programming interfaces preferredExperience using customer relationship management or enterprise resource planning platforms, such ...

Senior Business Analyst

Hiring Organisation
CNA Financial
Location
London, UK
Employment Type
Full-time
relational databases, data structures and data modelling concepts. Experience defining and documenting RESTful APIs, integration requirements and interface specifications. Experience reviewing API contracts, JSON and XML payloads and technical design documentation. Experience supporting system integration initiatives across multiple applications and platforms. Strong data mapping skills, including source-to-target mapping ...

Senior Data Engineer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent, Part Time
Salary
£75,000
deploy infrastructure into different environments Owning the cloud infrastructure underpinning data systems through a DevOps approach Knowledge of handling and transforming various data types (JSON, CSV, etc) with Apache Spark, Databricks or Hadoop Good understanding of the possible architectures involved in modern data system design (e.g. Data Warehouse, Data Lakes ...

Workday Integrations Consultant

Hiring Organisation
Cognizant
Location
London, UK
Employment Type
Full-time
gathering technical requirements and translating them into practical solutions. Strong troubleshooting, analytical, and problem-solving skills. Knowledge of integration architecture, data mapping, XML, XSLT, JSON, and web service technologies. Strong communication and stakeholder management skills. Ability to manage multiple priorities and work effectively in a fast-paced consulting environment. Eligible ...

Workday Integrations Consultant - AMS (Application Managed Services)

Hiring Organisation
Cognizant
Location
London, UK
Employment Type
Full-time
techno‐functional role. Hands‐on experience supporting Workday integrations in a post‐go‐live or AMS environment. Demonstrated proficiency with integration technologies, including REST, JSON, SOAP, SSL, PGP, SAML, and Workday integration tools. Experience with SaaS‐based integration architectures and monitoring/support models. Strong communication and presentation skills, with ...

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 ...

Senior AI Engineer - Agentic AI

Hiring Organisation
EPAM Systems
Location
London, UK
Employment Type
Full-time
deployment experience (Azure preferred), using services such as Azure OpenAI, AI Foundry or AI Search, with Docker and KubernetesUnderstanding of schema validation frameworks (e.g., JSON Schema, Pydantic) and MLOps tools such as MLflow or AirflowStrong communication ability to explain trade-offs around cost, latency and accuracy to technical ...