24 of 24 Permanent JSON Jobs in London

Senior Technical Lead

Hiring Organisation
Nextech Group Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
NinjaOne RMM, 3CX, Microsoft 365/Graph API * Strong JavaScript and/or Python for integration scripting and automation * REST API design - webhooks, OAuth, JSON transformation, event-driven architecture * Cross-platform data mapping across multiple SaaS systems * Technical documentation to a professional standard * Comfortable operating autonomously within a management structure ...

Microsoft Power Platform Developer (Copilot Studio Experience)

Hiring Organisation
Crowe UK
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
GitHub) Source control Ability to write and optimise expressions, formulas, and logic within Power Platform tools Basic knowledge of: JavaScript/TypeScript (for extensions) JSON and API integrations Understanding of: Generative AI grounding and data sources Prompt design and conversation design best practices Managing fallback, escalation, and human handoff scenarios ...

Mid-Senior Ruby on Rails Engineer (B2B SaaS | Hybrid | UK)

Hiring Organisation
Transreport
Location
City of London, London, United Kingdom
experience with PostgreSQL, including performance tuning and complex queries. Experience with background job processing using Sidekiq and Redis. Solid understanding of RESTful API design, JSON serialization, and authentication (e.g., JWT, SSO). Hands-on experience with AWS services and containerised deployments (Docker). Experience troubleshooting and supporting production systems. Comfortable ...

Python Automation Engineer

Hiring Organisation
Tata Consultancy Services
Location
London Area, United Kingdom
skills/knowledge/experience: Strong hands‐on experience with Python for test automation Proven experience using PyTest framework Experience in API automation (REST, JSON, Postman/Newman, requests, etc.) Good understanding of test design techniques, test data management, and reporting Experience with CI/CD tools such as Jenkins ...

Integration Architect

Hiring Organisation
INTEC SELECT LIMITED
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £90,000 per annum
solutions. Expertise in REST APIs, GraphQL, Azure Service Bus, Logic Apps, Event Grid, and file-based integrations. Strong understanding of data modelling, JSON, XML, and OData. Experience creating architecture diagrams, data flow maps, and technical documentation. Excellent communication skills with the ability to engage both technical and non-technical stakeholders. ...

Integration Engineer

Hiring Organisation
Intec Select
Location
London Area, United Kingdom
technologies, and file-based integrations. Strong knowledge of Azure Integration Services including Service Bus, Logic Apps, Event Grid, and API Management. Experience working with JSON, XML, OData, and data transformation techniques. Ability to create technical specifications, interface designs, and support documentation. Desirable: Development experience with C# and .NET technologies. Experience ...

Integration Developer – Boomi

Hiring Organisation
Required IT
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
Working with Azure Integration Services — including Logic Apps, API Management, Service Bus, and Event Grid Working with SQL databases and handling complex data transformations (JSON, XML) Writing clean, maintainable code in Python or similar languages to support integration workflows Contributing to integration strategy and technical architecture decisions Providing technical guidance ...

Fabric Data Engineer

Hiring Organisation
Initialize
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 per annum
Python and/or PySpark for data transformation and automation. Understanding of Power BI, semantic models, DAX and reporting requirements. Experience working with APIs, JSON, CSV, Parquet, Delta tables and common enterprise data formats. Knowledge of data governance, access control, data quality, metadata and lineage. Good documentation skills ...

Test Manager

Hiring Organisation
coforge
Location
London, United Kingdom
Employment Type
Permanent
/or NDC. Hands-on experience with test management tools such as JIRA, ALM, qTest, Zephyr. Good understanding of APIs (REST/SOAP), XML, JSON, NDC schemas. Knowledge of automation tools (Selenium, Postman, Karate, RestAssured). Experience 8 15+ years in QA/testing, with at least 3+ years ...

Senior AI Security & Automation Engineer

Hiring Organisation
WTW
Location
Greater London, United Kingdom
Employment Type
Full Time
similar frameworks. Deep understanding of cybersecurity domains, including incident response, threat detection, and Identity and Access Management (IAM) principles. Experience with RESTful APIs, JSON, and integrating various security platforms. Familiarity with cloud platforms and cloud-native security services. Knowledge of Microsoft Security products such as Microsoft Sentinel, Microsoft Defender ...

Senior Data Scientist

Hiring Organisation
Depixen
Location
City of London, London, United Kingdom
Computer Science, AI, Data Science, Machine Learning, NLP, Semantic Web, Knowledge Graphs, or a related field. Experience with RDF, OWL, SPARQL, SHACL, SKOS, JSON-LD, schema.org, ontologies, taxonomies, or Linked Data. Experience with graph databases or triple stores such as GraphDB, Stardog, Neo4j, Amazon Neptune, or Blazegraph. Experience with embeddings ...

Front End React Developer

Hiring Organisation
Ascend Consulting
Location
NW7, Mill Hill, Greater London, United Kingdom
Employment Type
Permanent
Salary
£45000 - £75000/annum Great Benefits
core principles Experience with Redux and RTK (RTKQuery also a bonus) Familiarity with RESTful APIs Knowledge of modern authorization mechanisms, such as JSON Web Token Familiarity with modern front-end build pipelines and tools (Github actions a bonus) Experience with common front-end development tools such as Babel, Webpack ...

Ruby Developer

Hiring Organisation
Proactive Appointments
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 80,000 Annual
Strong understanding of OOP & Rails architecture Extensive experience with PostgreSQL (performance tuning, complex queries) Background job processing with Sidekiq & Redis Expertise in RESTful APIs , JSON, JWT, SSO Experience with AWS & Docker Production system support & troubleshooting Strong communication skills & Agile/Scrum experience Ruby on Rails Developer Due to the volume ...

Power Platform Developer - Hybrid

Hiring Organisation
eTech Partners
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 65,000 Annual
collections and variables. Good knowledge of Power Fx formulas and functions. Experience building automated workflows using Power Automate. Experience working with HTTP connectors, Parse JSON and API integrations. Knowledge of custom connectors, REST APIs and web services. Experience implementing error handling, conditions and parallel processing within flows. Ability to work ...

Ruby on Rails Backend Engineer

Hiring Organisation
Rise Technical Recruitment
Location
Fulham, London, United Kingdom
Employment Type
Permanent
Salary
£60000 - £80000/annum Private Healthcare + Holiday + Pensi
Rails developer with deep expertise in PostgreSQL and background processing via Sidekiq and Redis. You should be highly proficient in building RESTful APIs, managing JSON serialisation, and implementing secure authentication methods like JWT or SSO. Beyond coding, you will possess knowledge of Docker and AWS, alongside the communication skills required ...

SOC Engineer - FTC

Hiring Organisation
Barclay Simpson
Location
City of London, London, United Kingdom
Technical Expertise Hands-on experience with SIEM platforms such as Splunk, Microsoft Sentinel, QRadar, Elastic, ArcSight, LogRhythm, or Exabeam Strong understanding of log formats (JSON, syslog, XML, CEF) and ingestion methods (APIs, Kafka, Event Hubs, agents) Experience in detection engineering, threat modelling, and attacker behaviour analysis Proven ability to build ...

Solutions Architect, Legal Technology

Hiring Organisation
Brimstone Consulting
Location
City of London, London, United Kingdom
Employment Type
Permanent
solutions meet security, compliance, and governance requirements Contribute to solution scoping, costing, and technical decision-making Skills & Experience Strong experience with API integrations (REST, JSON, OAuth, event-driven architecture) Background in cloud ecosystems (e.g. Microsoft 365, Azure or similar) Experience with workflow automation tools (e.g. Power Automate, Logic Apps ...

Solutions Architect (Applications/Integrations)

Hiring Organisation
Sellick Partnership
Location
City of London, London, United Kingdom
understanding of: Batch processing and bulk data movement Secure file transfer technologies (SFTP, FTPS, Managed File Transfer) Structured file formats including CSV, XML and JSON Data mapping and transformation Canonical data models Data synchronisation strategies Data governance and quality considerations DevOps & Delivery Knowledge of: CI/CD pipelines Version control ...

Senior Sales Engineer

Hiring Organisation
Vixio
Location
City of London, London, United Kingdom
authentication schemes (OAuth, API keys, mTLS), explain webhook patterns. Know the difference between synchronous and asynchronous integrations. Data Architecture: Understand ETL, data lakes, warehouses, JSON/XML payloads, and how data moves between systems. Can scope data volume and throughput requirements. Compliance Infrastructure: Familiar with GRC tool workflows (task management ...

Data Architect

Hiring Organisation
UST
Location
City of London, London, United Kingdom
related data platforms (e.g. Snowflake) Strong experience with Apache Airflow and DAG-based orchestration Experience designing configuration-driven frameworks: Using YAML or JSON Experience building automated testing for data pipelines: Functional equivalence testing Regression testing Proven technical leadership: Ability to influence without authority Align senior engineers across data ...

Product Analyst

Hiring Organisation
AxiaMetrics
Location
Harrow, England, United Kingdom
Competent at understanding and extracting data in relational databases for assessment and testing(SQL) Competent a data analysis and basic statistics Competent at understanding JSON data structures and being able to visual data manipulation. Ideally some experience in Machine Learning/Artificial Intelligence and/or Native apps. ...

Scala Developer (Remote)

Hiring Organisation
Stealth iT Consulting
Location
City of London, London, United Kingdom
Solid understanding of functional programming concepts and idiomatic Scala (e.g., immutability, monads, cats/Scalaz familiarity advantageous). Experience designing and consuming REST APIs, JSON validation/serialization (Play JSON, Circe). Experience with relational databases (PostgreSQL) and/or NoSQL (MongoDB), including schema design and query optimisation. Proven experience ...

Scala Developer (Remote)

Hiring Organisation
Stealth iT Consulting
Location
East London, London, United Kingdom
Solid understanding of functional programming concepts and idiomatic Scala (e.g., immutability, monads, cats/Scalaz familiarity advantageous). Experience designing and consuming REST APIs, JSON validation/serialization (Play JSON, Circe). Experience with relational databases (PostgreSQL) and/or NoSQL (MongoDB), including schema design and query optimisation. Proven experience ...

Sales Engineer

Hiring Organisation
Tiptap
Location
City of London, London, United Kingdom
Help us drive revenue growth! You win when our AE wins. We're looking for our first dedicated sales engineer to convert Tiptap users and prospects into customers. You will work closely with the entire ...