26 to 49 of 49 JSON Jobs in London

Senior OPERA PMS & OHIP Specialist

Hiring Organisation
Salt
Location
London Area, United Kingdom
Reservations & Front Desk Cashiering & Folios Profiles & Rate Management Night Audit processes Proven experience with OHIP (Oracle Hospitality Integration Platform) Strong understanding of: REST APIs & JSON API testing tools (Postman or similar) Ability to map API payloads back to real OPERA behaviour Strong analytical mindset — you enjoy digging into data inconsistencies ...

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 ...

Senior Network Design engineer

Hiring Organisation
Sky
Location
E16PU, Spitalfields and Banglatown, Greater London, United Kingdom
Employment Type
Permanent
test plans, defects, test reports, MOPs, and change tickets. Good to have skills Practical experience with OpenConfig and vendor - specific NETCONF/YANG, including JSON/XML payloads. Strong understanding of IPv4aaS , particularly MAP-T . Strong understanding of BNG from Nokia (7750) and/or Huawei (CX600/NE8000 ...

Principal Solutions Consultant

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
customer experience platforms.* 3+ years leading large, strategic, and complex enterprise deals.* Deep technical fluency with web/scripting technologies (HTML, CSS, JavaScript, JSON, LLMs, MCP) and SaaS architectures.* Proven success in positioning the business value of technical solutions and the strategic role of Professional Services and Partners.* Hands ...

Automation Software Engineer - Power Automate - £650/day 6mths

Hiring Organisation
Adecco
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£600 - £650 per day
What you'll be doing Building and orchestrating automations using Power Automate (core skill) Working with stand-alone APIs and small structured datasets (CSV, JSON, spreadsheets) Automating ITSM processes, checklists, and onboarding (JML) Consolidating data into Azure DevOps dashboards Supporting ServiceNow CI/CD integrations (read-only) Delivering PoCs Creating ...

S/4HANA Coupa Integration Architect

Hiring Organisation
Searchability NS&D
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £577 per day
flow across procurement and finance systems. Design and deliver integration architecture across Coupa and SAP S/4HANA Build and manage APIs (REST/JSON, OData), IDocs, and BAPIs Oversee master data and transactional integration (P2P, AP) Collaborate with business and technical stakeholders across multiple teams Support full lifecycle delivery ...

Senior Solutions Developer (MS Power Platforms)

Hiring Organisation
PHOENIX COMMUNITY HOUSING
Location
London, UK
data structures, able to translate the operational requirements into robust solutions? Technically, you should be competent in writing, deciphering and manipulating code including JSON and PowerFX. Python and JavaScript would be advantageous here. If you have in-depth understanding of APIs in tandem with Power Automate – able to create dataflows ...

Client Services Manager - Derivatives and Prime Brokerage

Hiring Organisation
CBSbutler Holdings Limited
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
+ Bonus and Benefits. You will responsible for full system implementation projects and proof of concept (POC) projects, project management, client on-boarding, optimisation, JSON, Python, APIs, scripting, derivatives and/or trading lifecycle understanding, etc. * Be able to understand, at least at a high level, how Prime Brokerage margin ...

Integration Engineer

Hiring Organisation
Hays
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500.0 - £595.0 per day + up to £595pd (Outside IR35)
Proven experience working with InterSystems HealthShare. Strong hands-on experience mapping source systems to SDA3. Experience building integrations using HL7 v2, FHIR, XML/JSON, and APIs. Hands-on experience with ObjectScript or HealthShare configuration. Experience implementing routing, transformation, validation, and error handling. Strong understanding of core healthcare data (demographics ...

Solution Consultant

Hiring Organisation
Mirakl
Location
London, England, United Kingdom
with a track record of leading design sessions and crafting detailed, technical solutions for SaaS platforms You are familiar with web technologies and frameworks (JSON/XML, CSV, Responsive Design, Restful APIs). Fluency in English. We welcome collaborators with their diverse perspectives and experiences to power us forward. These ...

AI Engineer

Hiring Organisation
Fruition Group
Location
London, United Kingdom
Employment Type
Permanent
Salary
£90,000
platforms such as Copilot Studio Experience working with generative AI concepts (e.g. prompt design, RAG, grounding) Good understanding of integration patterns (APIs, REST/JSON, event-driven workflows) Experience with Microsoft ecosystem tools such as Power Platform and Microsoft 365 Knowledge of identity, access control, and secure system design Ability ...

Marketing Associate

Hiring Organisation
McGregor Boyall Associates Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£55,000
needs into technical solutions and scalable workflows Strong stakeholder management skills with experience working across technical and non-technical team Working knowledge of SQL, JSON, or API troubleshooting Experience with customer data platforms (CDPs) and attribution models Exposure to AI-driven automation or agent-based workflows Understanding of data privacy ...

Marketing Associate

Hiring Organisation
McGregor Boyall
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£48,000 - £55,000 per annum
needs into technical solutions and scalable workflows Strong stakeholder management skills with experience working across technical and non-technical team Working knowledge of SQL, JSON, or API troubleshooting Experience with customer data platforms (CDPs) and attribution models Exposure to AI-driven automation or agent-based workflows Understanding of data privacy ...

Integration Specialist – Workforce Management

Hiring Organisation
Intec Select Ltd
Location
London, Billingsgate, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £750/day
Understanding of payroll, HRIS, time and attendance, and scheduling data Strong skills in integration tooling (e.g., CPI/MuleSoft/Boomi) and data formats (JSON/XML/CSV). Experience with authentication/authorisation, logging, and operational support Ideally also an understanding of: Payroll processing cycles and time valuation ...

Founding Practice Lead — AI Governance

Hiring Organisation
Norven Group
Location
City of London, London, United Kingdom
playbook v1 — which becomes the institutional standard. Platform integration. Work alongside the engineering lead to define what the operator portal must capture, structure canonical JSON, design evidence-intake architecture, and ensure the seal pipeline matches methodology output. Fellow-readiness operations. Build per-Fellow conflict-check workflows, hardware-key onboarding process ...

DB Administrator

Hiring Organisation
Methods Business and Digital Technology Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
event-based, batch) Work with data engineers to structure data for reporting and audit use cases Address challenges with semi-structured data ( eg JSON/JSONB fields) Development Support & Collaboration Collaborate with engineering teams on: Database design and schema evolution Query optimisation Data modelling for services and reporting Support … guidance on best practices for database usage within microservices Essential Skills & Experience Technical Strong experience with PostgreSQL, including: Performance tuning Indexing strategies Query optimisation JSON/JSONB handling Experience with Azure PostgreSQL Flexible Server Proficiency in SQL and database troubleshooting Experience with Terraform or similar IaC tooling Understanding of: Backup ...

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 ...

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 Contract - £400 Outside IR35

Hiring Organisation
Stealth iT Consulting
Location
East London, London, United Kingdom
functional programming concepts and idiomatic Scala (immutability, monads; familiarity with Cats or Scalaz is a plus). Experience designing and consuming REST APIs , including JSON validation/serialization (Play JSON, Circe). Proficiency with relational databases (PostgreSQL) and/or NoSQL (MongoDB), including schema design and query optimization. Proven experience ...

Scala Developer - Remote Contract - £400 Outside IR35

Hiring Organisation
Stealth iT Consulting
Location
City of London, London, United Kingdom
functional programming concepts and idiomatic Scala (immutability, monads; familiarity with Cats or Scalaz is a plus). Experience designing and consuming REST APIs , including JSON validation/serialization (Play JSON, Circe). Proficiency with relational databases (PostgreSQL) and/or NoSQL (MongoDB), including schema design and query optimization. Proven experience ...

Power Platform Developer

Hiring Organisation
ARM
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £540/day Inside IR35
Power Platform Developer 3 Months 5 Days per week on site in Canary Wharf £(Apply online only) per day (Inside IR35 My client, in the financial services industry, are looking for a Power Platform Developer ...

ServiceNow Technical Architect

Hiring Organisation
COMPUTACENTER (UK) LIMITED
Location
South East London, London, United Kingdom
Employment Type
Permanent
Life on the team Join a dynamic supportive team working together to solve strong technical challenges by building high-quality ServiceNow solutions.? We were one of the first ServiceNow partners in Europe, awarded the 2022 ...

ServiceNow Technical Architect

Hiring Organisation
COMPUTACENTER (UK) LIMITED
Location
London, UK
Life on the team Join a dynamic supportive team working together to solve strong technical challenges by building high-quality ServiceNow solutions.? We were one of the first ServiceNow partners in Europe, awarded the 2022 ...

Solutions Engineer | 315% YoY SaaS scaleup

Hiring Organisation
Bluebird
Location
City of London, London, United Kingdom
Location: London (hybrid) Setup: 2-3 days in office Language: English Focus: Data modelling, integrations, customer delivery Stack: CRM (Salesforce/HubSpot), APIs, JSON, data warehouse Comp: ~£65-75k base + bonus Growth: 315% YoY The role You’ll work directly with customers and commercial teams to build … based on real CRM data translating GTM needs into data models and queries integrating data into CRMs, sequencing tools, and warehouses working with APIs, JSON, and data pipelines iterating continuously based on performance and feedback feeding insights back into Product and Engineering Why this role exists The company is scaling ...