JSON Jobs in London

1 to 25 of 109 JSON Jobs in London

D365 CE/CRM Developers / Snr Developers

London, United Kingdom
Hybrid / WFH Options
Cloud Decisions
Power Automate Hands-on experience in configuration, customization, and extension of Dynamics CRM Proficiency with .NET Framework 4.5+ including WCF/Web API Knowledge of web development: HTML, CSS, JSON, XML, JavaScript, TypeScript, SQL C# and OOPS concepts Experience with SQL Server 2008 or above, including SQL Azure, SSRS, FetchXML Experience with Azure Logic Apps, Azure Functions, Integration, Azure DevOps More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Integration Architect

London, United Kingdom
Hybrid / WFH Options
La Fosse Associates
and scalability across systems. Key Experience Required: Strong knowledge of integration platforms and API management. Proficiency in Java, .NET Core, or JavaScript. Experience with REST/SOAP, XML/JSON, and cloud platforms (Azure/AWS). Strong communication skills and ability to influence stakeholders. (Desirable) Banking/financial services experience, ESB, containers (Docker/Kubernetes), and event-driven APIs. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Backend Engineer - Contractor - (Outside of IR35)

London, United Kingdom
Pulselive
Spring Boot and Spring Framework (v5+) JPA/Hibernate and ORM principles Designing and building microservice architectures Creating and consuming RESTful APIs Git for version control and collaborative development JSON and working with structured data Unit testing with frameworks like JUnit Task management tools like JIRA Writing technical documentation for APIs and backend components Proficient with: SQL (PostgreSQL, MySQL, or More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full Stack Dot Net Software Developer

West London, Greater London
Nexus Jobs Limited
in implementing business process automation Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger PowerBI, PowerQuery, Dax & M Other API messaging formats e.g. JSON, XML, SOAP Experience of structured testing and quality assurance approaches (e.g. Test Driven Development and Behaviour Driven Development) A positive and cooperative individual who will work effectively across departments and More ❯
Employment Type: Permanent
Posted:

Full Stack .Net Software Developer

West London, Greater London
Nexus Jobs Limited
in implementing business process automation Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger PowerBI, PowerQuery, Dax & M Other API messaging formats e.g. JSON, XML, SOAP Experience of structured testing and quality assurance approaches (e.g. Test Driven Development and Behaviour Driven Development) A positive and cooperative individual who will work effectively across departments and More ❯
Employment Type: Permanent
Posted:

Front and Backend C# Dot Net Javascript Software Developer with Umbraco

West London, Greater London
Nexus Jobs Limited
in implementing business process automation Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger PowerBI, PowerQuery, Dax & M Other API messaging formats e.g. JSON, XML, SOAP Experience of structured testing and quality assurance approaches (e.g. Test Driven Development and Behaviour Driven Development) A positive and cooperative individual who will work effectively across departments and More ❯
Employment Type: Permanent
Posted:

Mulesoft Technical Lead

South East London, London, United Kingdom
LA International Computer Consultants Ltd
solutions. Required Skills: Good experience of: integration concepts & technologies. MuleSoft Anypoint Platform & components (Mule ESB, API Manager, CloudHub, etc.) Java programming & experience with other programming languages such as XML, JSON, SQL Agile software development methodologies. Cloud-based integration platforms such as Amazon Web Services (AWS) or Microsoft Azure. API design and development. Knowledge of RESTful web services, SOAP, & other integration More ❯
Employment Type: Contract
Rate: £700 - £765 per day
Posted:

Technical Lead

London, United Kingdom
Oliver James Associates Ltd
aligned to client needs. Technical & Analytical Tools: Proficient in Microsoft Office, Jira, Confluence, Miro, and similar tools. Desirable experience with programming or scripting languages (e.g., Java, Python, SQL, HTML, JSON). Certifications (Preferred): Agile certifications (Scrum Master, Product Owner) Cloud certifications (AWS, GCP, Azure) ITIL or other IT service management credentials Industry Awareness: Knowledge of current trends and innovations in More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Technical Lead

London, South East, England, United Kingdom
Hybrid / WFH Options
Oliver James
aligned to client needs. Technical & Analytical Tools:Proficient in Microsoft Office, Jira, Confluence, Miro, and similar tools. Desirable experience with programming or scripting languages (e.g., Java, Python, SQL, HTML, JSON). Certifications (Preferred): Agile certifications (Scrum Master, Product Owner) Architecture frameworks (e.g. TOGAF) Cloud certifications (AWS, GCP, Azure) ITIL or other IT service management credentials Industry Awareness:Knowledge of current More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Senior Technical Java and C# .net Software Developer

London
Nexus Jobs Limited
of strong hands-on experience as a developer working on JAVA or .NET Framework standards and technologies - C#.NET, ASP.NET, AngularJS, SQLServer, Web Services, Cloud Platforms, AJAX, JQUERY, XML/JSON, HTML, CSS · Retail/digital technology experience is essential · Experience in SalesForce Service and Marketing Clouds · Safety Knowledge: · Provides a consistent outstanding role model in relation to safety practices with More ❯
Employment Type: Permanent
Posted:

Senior Technical Solutions Consultant

London, United Kingdom
LexisNexis Risk Solutions
Understanding of the Software Development Life Cycle (SDLC). Experience with Windows and Linux operating systems. Familiarity with relational databases (SQL Server, Oracle, PostgreSQL). Knowledge of SOAP/JSON web services and XML. Programming experience (e.g., PowerShell, C#, Python). Awareness of cloud platforms (Azure, AWS, Google Cloud, OpenShift). Understanding of server virtualization (VMware, Hyper-V). Ability More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Python Developer

London, United Kingdom
BDO UK LLP
such as LangChain, LlamaIndex, CrewAI, Semantic Kernel, Autogen and Agno. An understanding of how Large Language Models (LLMs) work. Data Engineering & Modelling: Understanding of ORM/entity relationships, NoSQL, JSON, XML, SQL and exposure to data visualisation tools (ETL/ELT). Data Science Tools: Proficiency in Numpy, Pandas, Matplotlib, Seaborn and Scikit-learn. MLOps: Experience building pipelines (CI/ More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

D365 CE Technical Architect

London, United Kingdom
Hybrid / WFH Options
Cloud Decisions
experience customizing and extending Dynamics CE. SQL Server experience, including SSRS and FetchXML reporting. .NET Framework 4.5+ and WCF/Web API expertise. Knowledge of web development: HTML, CSS, JSON, XML, JavaScript, SQL. C# and OOP concepts. Ideals to have: Azure Logic Apps. Experience with data integration and migration projects. Power BI expertise. Senior-level development experience in Dynamics More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Software Engineer

London, United Kingdom
Lloyds Banking Group
quality and can support the team by demonstrating approaches such as CI/CD standard methodology, Pair Programming, TDD, and BDD. Technical understanding of: Spring boot, Maven, GitHub, Jenkins, JSON, Kafka, WMQ, REST APIs, Database SQL, Docker and Kubernetes Experience working on any one of the cloud-based tools - GCP, MS Azure, AWS Nice to have skills: Experience in Banking More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Data Engineer

London, United Kingdom
Gunvor Group
data warehousing technologies (e.g., Spark, Snowflake, Delta Lake). Strong understanding of data governance, master data management, and data quality frameworks. Solid grasp of web technologies and APIs (REST, JSON, XML, authentication protocols). Experience with DevOps practices, CI/CD pipelines, and containerization (Docker, Kubernetes). Strong communication skills with the ability to explain complex technical concepts to non More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Solutions Architect (Adtech)

London, United Kingdom
Hybrid / WFH Options
Publicis Groupe
CSS, JavaScript), tag managers, and tracking methods (client/server-side). Strong API skills (REST, Postman) and experience troubleshooting integration workflows. Familiarity with data formats (CSV, TSV, XML, JSON) used in ad tech and e-commerce. Experience with SQL and data platforms like BigQuery for analysis and troubleshooting. Understanding of event tracking for impressions, clicks, and conversions via APIs More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Technical Consultant

London, United Kingdom
iManage
Experience handling sensitive data in heavily regulated industries while adhering to data security policies Application integration and/or development skills using JavaScript, Python, REST APIs and experience with JSON Implementation delivery skills, including the ability to install, deploy, validate, and troubleshoot multi-product solutions and integrate with other systems while following product best practices while prioritizing user and functional More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead FX Trading Platform Specialist (DIR)

London, United Kingdom
SGS Société Générale de Surveillance SA
architecture (latency budget, throughput, HA & DR, observability). Own protocol & data model standards for client to venue and internal flows (eg FIX 4.4/5.0, REST/gRPC, protobuf, JSON) Hands on Engineering Lead development of price engine, negotiation logic and execution gateways in the target architecture Implement ultra low latency market data handlers and multicast publishers Introduce automated performance More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Engineer

London, United Kingdom
Shackleton Advisers Limited
data pipeline frameworks and ETL tools and familiarity with big data technologies. Understanding of version control principles and tools essential. Knowledge of data integration tools and languages (e.g., APIs, JSON, XML, Web Services) desirable. The ability to resolve complex and non-routine issues and identify improvements in the testing and validation of data accuracy. Enthusiasm to develop your skills, take More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Integration Architect (Contract)

London, United Kingdom
ALLSAINTS Retail Limited
various integration patterns (e.g., ETL, EAI, B2B, real-time streaming, batch processing). Strong experience with cloud-native integration services and hybrid cloud environments. Expertise in various data formats (JSON, XML, EDI) and messaging protocols (Kafka, RabbitMQ, JMS). Familiarity with core retail systems such as ERP (e.g., Microsoft Dynamics 365, SAP), POS/MPOS, E-commerce platforms (e.g., Salesforce More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Engineer Lead - NatGas and Power

London, United Kingdom
Gunvor Group
source or commercial products (e.g. PowerBI , Plot.ly, matplotlib) Programming OOP DevOps Application development lifecycle Web technologies HTTP/S HTML/Javascript REST APIs Authentication protocols Data formats (CSV, JSON, XML, Parquet) Experience with time-series databases (e.g., InfluxDB, kdb+, TimescaleDB) and real-time data processing. Familiarity with distributed computing and data warehousing technologies (e.g., Spark, Snowflake, Delta Lake). More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

QA Engineer

London, United Kingdom
Onmo
a strong understanding of software testing methodologies, excellent analytical skills, and a passion for delivering high-quality products. Tech Stack: AWS Serverless Lambda with Node.js API Gateway (REST/JSON) DynamoDB S3 WAF Back-Office Banking Systems API Integration Dynamics 365 CRM React.js (website)/React Native (app) Responsibilities: Collaborate with cross-functional teams to understand project requirements and define More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full Stack Software Engineer

London, United Kingdom
Hybrid / WFH Options
Lloyds Bank plc
in Java, using a broad set of tools, techniques, and platforms, with a focus on proving it works and does the right thing. Experience working with Spring, REST APIs, JSON and Microservices. Good understanding of architecture and cloud native principles Familiar with test driven development approach Experience working with container environments in particular Docker, Kubernetes and Helm (e.g. GCP, Azure More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Scala Developer

London Area, United Kingdom
Stealth iT Consulting
Required Skills and Experience: Strong commercial experience in Scala development. Hands-on experience with the Play Framework . Solid understanding of functional programming principles. Experience working with REST APIs , JSON, and HTTP protocols. Familiarity with version control systems (Git). Agile/Scrum delivery environment experience. Understanding of TDD/BDD and automated testing frameworks. Experience working on public sector More ❯
Posted:

Scala Developer

City of London, London, United Kingdom
Stealth iT Consulting
Required Skills and Experience: Strong commercial experience in Scala development. Hands-on experience with the Play Framework . Solid understanding of functional programming principles. Experience working with REST APIs , JSON, and HTTP protocols. Familiarity with version control systems (Git). Agile/Scrum delivery environment experience. Understanding of TDD/BDD and automated testing frameworks. Experience working on public sector More ❯
Posted:
JSON
London
10th Percentile
£46,960
25th Percentile
£50,000
Median
£65,000
75th Percentile
£79,906
90th Percentile
£94,375