JSON Jobs in Central London

1 to 25 of 37 JSON Jobs in Central London

Software Engineer

City of London, London, United Kingdom
Experis UK
or FastAPI) . Experience with MySQL/PostgreSQL and familiarity with NoSQL databases . Understanding of object-oriented programming , design patterns, and software architecture principles. Knowledge of RESTful APIs , JSON, and web services. Familiarity with version control systems (Git) . Experience working in Agile/Scrum environments . Desirable Skills Exposure to cloud platforms (AWS, Azure, or GCP). Knowledge More ❯
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Senior Data Engineer

City of London, London, United Kingdom
Acxiom UK
well as experience working with both synchronous and asynchronous endpoints Experience with Snowflake or Redshift with a strong understanding of SQL. Proficient in Python and Pandas Experience working with JSON and XML Strong understanding of cloud computing concepts and services (AWS preferably) Experience with Git or equivalent version control systems and CI/CD pipelines. Familiarity with dbt a plus More ❯
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Senior Data Scientists / Analysts – SC/DV Cleared — Multiple Openings 🌳

City of London, London, United Kingdom
Hybrid/Remote Options
Areti Group | B Corp™
pace and scale. The toolkit you’ll use 🌳 Data Science & Engineering: Python (NumPy, Pandas, scikit-learn, PyTorch/TensorFlow), SQL, NoSQL, Spark, big data ecosystems Visualisation & APIs: REST/JSON, Postman, Flask/FastAPI, Power BI/Tableau, D3.js DevOps & Cloud: CI/CD, Docker, AWS (S3, Lambda, SageMaker), Kubernetes, Terraform/CDK ML Ops & Automation: MLFlow, feature stores, model More ❯
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D365 CE Developer

City of London, London, United Kingdom
SmartChoice International Limited
Platform technologies (Power Automate, Power Pages/Portals). Advanced configuration, customisation, and integration expertise in Dynamics 365 CE. Strong knowledge of integration technologies such as Logic Apps, HTTP, JSON, AJAX, OAuth2. Proficiency in .NET, C#, JavaScript, and related programming languages. Significant experience developing Plugins for Dynamics 365. Strong experience with JavaScript and HTML to enhance Dynamics form customisation. Proven More ❯
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Senior UI Developer

City of London, London, United Kingdom
Apexon
principles •Strong JavaScript, TypeScript HTML5, and CSS3 skills •Experience with popular React.js workflows (such as Redux) •Familiarity with RESTful APIs and integration •Knowledge of modern authorization mechanisms, such as JSON Web Tokens •Understanding of front-end build tools and pipelines •Excellent problem-solving and communication skills •A strong attention to detail, and a passion for delivering high-quality code •Adaptability More ❯
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MuleSoft Developer

City of London, London, United Kingdom
Hybrid/Remote Options
Advanced Resource Managers
lifecycle from design to governance and management. Working with batch message processing, Salesforce, file, and database connectors. Using MUnit and practising test-driven development. Experience with REST, HTTP, MQ, JSON, XML, and SOA. Familiarity with CI/CD pipelines (Maven, Jenkins, Bitbucket, Git, MuleSoft). Desirable Experience working in consulting or public sector environments. Experience as a microservices developer. MuleSoft More ❯
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Analytics Engineer

City of London, London, United Kingdom
Hybrid/Remote Options
Tenth Revolution Group
engineering team. Partner with senior management, operational leads, and other stakeholders, coaching and supporting a data-driven culture, including KPI definition and reporting frameworks. Accountable for data extraction, transforming JSON & XML, utlising high experience within metadata management. Collaborate with data engineers to develop data, enrich product design and integrate data for predictive models or machine learning. Deliver well-defined, transformed More ❯
Employment Type: Contract
Rate: £300 - £350/day
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Principal Full Stack Engineer React, Typescript, C#, MySQL, AWS

City of London, London, United Kingdom
Smart Sourcer Limited
Own architecture and technical decisions across squads; accountable for how software is built and shipped. Design and develop distributed, scalable microservices (C# .NET Core or Node.js) and REST/JSON APIs. Build modern React + TypeScript UIs with component-driven design, advanced state management, and reusable frameworks. Leverage AWS services (Lambda, API Gateway, SQS/SNS, Step Functions, S3, IAM More ❯
Employment Type: Permanent
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Principal Software Engineer (Full Stack) - React, Typescript, C#, .NET Core, MySQL, AWS Services (serverless)

City of London, London, United Kingdom
Smart Sourcer
Own architecture and technical decisions across squads; accountable for how software is built and shipped. Design and develop distributed, scalable microservices (C# .NET Core or Node.js) and REST/JSON APIs. Build modern React + TypeScript UIs with component-driven design, advanced state management, and reusable frameworks. Leverage AWS services (Lambda, API Gateway, SQS/SNS, Step Functions, S3, IAM More ❯
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Wordpress Developer

City of London, London, United Kingdom
Hybrid/Remote Options
Spencer Scott - Technology Recruitment
Key Responsibilities: 8+ years of professional WordPress development experience Deep knowledge of the WordPress + Gutenberg ecosystem and best practices Skilled at building custom blocks, RSS feeds, and WP-JSON API endpoints Strong front-end and back-end chops: HTML, CSS, JS, PHP, and React Confident using Git, branching workflows, and Agile project tools like JIRA Experience leading or delivering More ❯
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SQL Systems Analyst

City of London, London, United Kingdom
Hybrid/Remote Options
Vida Bank
technology and business projects. Requirements: 2–3 years of experience in a technology role within financial services. Strong SQL scripting skills and experience with MS SQL Server. Familiarity with JSON and XML formats. Understanding of software development lifecycle (SDLC) and Agile methodologies. Experience with incident and change management processes. Excellent analytical and problem-solving skills. Strong communication skills and ability More ❯
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Radar Live Product Configuration Developer

City of London, London, United Kingdom
Hybrid/Remote Options
eTeam
with Radar Live and Radar Base configuration. • Proficient in scripting logic, rating algorithm development, and pricing rule configuration. • Knowledge of insurance pricing, underwriting processes, and actuarial principles. • Familiarity with JSON, XML, or similar data structures used for model inputs/outputs. • Experience integrating Radar Live with policy administration systems (e.g., Guidewire, Duck Creek) is a plus. • Strong analytical and problem More ❯
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Integration Lead

City of London, London, United Kingdom
Formula Recruitment
or global organisations. Experience working with ERP systems (preferably NetSuite) and associated integration tools and methodologies. Strong understanding of APIs, web services (REST/SOAP), and data exchange formats (JSON, XML, CSV). Familiarity with middleware platforms (e.g., Dell Boomi, MuleSoft, Workato) or equivalent integration technologies. Experience managing relationships with vendors and third-party delivery partners. Solid understanding of data More ❯
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Radar Live Developer

City of London, London, United Kingdom
Capgemini
WTW Radar Live and Radar Base configuration. · Proficient in scripting logic, rating algorithm development, and pricing rule configuration. · Knowledge of insurance pricing, underwriting processes, and actuarial principles. · Familiarity with JSON, XML, or similar data structures used for model inputs/outputs. · Experience integrating Radar Live with policy administration systems (e.g., Guidewire, Duck Creek) is a plus. · Strong analytical and problem More ❯
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AI Data Engineer

City of London, London, United Kingdom
Hybrid/Remote Options
8Bit - Games Industry Recruitment
datasets-or the ability to quickly upskill in 3D data workflows. Knowledge of data versioning and quality management tools (e.g., Git/Perforce, DVC) and structured storage systems (XML, JSON, databases). Strong understanding of privacy-by-design, security, and data compliance (GDPR/COPPA). A builder’s mindset-able to prototype quickly, iterate efficiently, and document clearly. High More ❯
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C# .Net Software Developer

Central London, London, England, United Kingdom
Ashdown Group
experienced Lead C# Software Developer with solid Azure cloud experience. The ideal Senor C# .Net Developer will have previous experience with: C# & .Net Core React.js &/or Next.js LINQ, JSON & Inversion of Control Azure PaaS, Function Apps, Blob/Table Storage, Service Bus Topics, Azure Search and API Management Infrastructure as Code (ideally Terraform) and its use in CI/ More ❯
Employment Type: Full-Time
Salary: £80,000 - £95,000 per annum
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Java Developer – Market Connectivity

City of London, London, United Kingdom
Hybrid/Remote Options
Solytics Partners
developing with TransFICC’s Connectivity Platform. Experience with electronic market protocols: FIX (4.x/5.x) Market-specific APIs (Tradeweb, Bloomberg, MTS, etc.) Binary/Streaming protocols (ITCH, FAST, SBE, JSON over TCP). Familiarity with low-latency patterns, high-throughput messaging, and microservices. Additional Skills Experience with Linux, shell scripting, and performance analysis tools. Knowledge of Kafka, Redis, Aerospike, or More ❯
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Senior / Principal Data Modeller

City of London, London, United Kingdom
Harnham
SQL and data warehousing knowledge Hands-on experience with metadata and data governance frameworks Excellent stakeholder management and communication skills Nice to have: Experience working with semi-structured data (JSON, XML, Parquet) Broader experience in data architecture or engineering Exposure to energy or financial services industries Apply below More ❯
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Golang Software Engineer

City of London, London, United Kingdom
Hybrid/Remote Options
Venture Up
technical decisions in the best interests of users and the business. Strong knowledge and hands-on experience of designing well defined interfaces, we’re using gRPC, protocol buffers, RESTful JSON and GraphQL. Strong knowledge and hands-on experience of microservice architectures, best practices and patterns. Hands-on experience with caching, they are primarily using Redis and Object storage buckets. Hands More ❯
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Cloud Administrator

City of London, London, United Kingdom
Wipro
technologies (e.g. Jenkins/Ansible/Azure for DevOps/Chef/Puppet); web application server technologies, cloud Infrastructure design, cloud best practices; Any of the following programming languages: JSON, Python, PowerShell SQL including OSS (postgre, MySQL etc), Azure SQL NoSQL Databases including OSS (Maria, Mongo etc), Cosmos DB • Experience using integrated development environments (e.g. Visual Studio, Visual Studio Code More ❯
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🌳 Full-Stack Software Engineers SC/DV Cleared — Multiple Openings 🌳

City of London, London, United Kingdom
Hybrid/Remote Options
Areti Group | B Corp™
TypeScript apps with React (Vite/Material-UI) and backends in Node.js/Express (bonus: C#/.NET or Python/Django ). Design and document clean REST/JSON interfaces; test with Postman and automate regression suites. Own CI/CD pipelines and Docker -based runtime on AWS ; Infrastructure-as-Code via CDK/Terraform (CDKTF) . Apply secure … The toolkit you’ll use Frontend: TypeScript, React.js, Vite, Material-UI, HTML5, CSS Backend: Node.js, Express.js (nice-to-have: C#/.NET, Python/Django) APIs & Data: REST/JSON, SQL, PostgreSQL/Postgres , databases DevOps: CI/CD, Docker , containerisation, Ubuntu/Linux, AWS , Serverless, CDK/CDKTF , Ansible Quality & Analytics: Postman API, testing frameworks, web analytics Patterns: Secure … + API) from design to production deployment . Hands-on with TypeScript , React , Node/Express , SQL/PostgreSQL , Docker , CI/CD . Building and consuming RESTful APIs ; JSON schemas; integration testing. Comfortable in AWS and modern Infrastructure-as-Code approaches. Strong engineering fundamentals: code reviews, testing, observability, performance tuning . Security Clearance: Active SC or DV (must be More ❯
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Site Reliability Engineer (Splunk)

City of London, London, United Kingdom
Hybrid/Remote Options
Ampstek
Kubernetes (K8s) for container orchestration. Solid understanding of log management, observability, and monitoring frameworks . Knowledge of scripting languages (Python, Shell, or PowerShell) for automation. Familiarity with REST APIs, JSON, and data integration techniques . Experience in performance tuning and troubleshooting Splunk/ELK environments. Strong problem-solving skills with the ability to work in fast-paced environments. Talent Acquisition More ❯
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Solutions Architect (Azure, M365, Terraform)

City of London, London, United Kingdom
Hybrid/Remote Options
Totum Partners
automate Proven experience with integration tools and platforms and the ability in developing and managing API integrations between cloud and on prem software and internal reporting. Use of SQL, JSON, OData and Rest APIs to build and maintain a data warehouse, adhering to best practices for data management and storage. This role offers hybrid working - 2 days WFH. More ❯
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Java Technical Consultant - Derivatives Products

City of London, London, United Kingdom
Talensa Partners
relating to Trading technology and regulatory reporting use cases. Experience & Skills required: High Proficiency of hands on coding ability in Java/Python and has worked in data formats: (JSON, DSL, FpML), Code Editors such as (IntelliJ, PyCharm, VSCode, Eclipse) Preferably Data modelling of financial products, transactions and lifecycle events Proactive worker on Technical projects, able to engage stakeholders and More ❯
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Data Modeler

City of London, London, United Kingdom
Hybrid/Remote Options
Harnham
data engineers, and analytics teams to ensure data models align with business and technical goals. Leveraging tools such as ERWin, Sparx, RSA, Visio , and handling semi-structured data formats (JSON, XML, Parquet). SKILLS AND EXPERIENCE The successful Data Modeller will have the following skills and experience: Proven experience in data modelling within consulting or financial services environments. Strong expertise More ❯
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JSON
Central London
10th Percentile
£59,000
25th Percentile
£61,250
Median
£95,000
75th Percentile
£112,500