1 to 25 of 27 Permanent JSON Jobs in London

Senior Java Developer

Hiring Organisation
Response Informatics
Location
Croydon, Surrey, South East, United Kingdom
Employment Type
Permanent
Salary
£70,000
Junit, Mockito, PowerMockito & Wiremock Experience and understanding of CICD pipeline of Docker, Jenkins and Kubernetes Understanding of all the agile ceremonies. Good understanding of JSON and XML Experience in Relational Database Management System (e.g. PostgreSQL) Nice to have skills: Knowledge of Workflow/Business Process Management tools Experience with front ...

Senior Full Stack Developer (Python) - Networks, Vice President

Hiring Organisation
State Street
Location
London, UK
control, authentication and authorization controls. · Extensive experience in communication with other systems via restful API's. · Solid experience with of web data formats including JSON and XML · Experience with automating networking technologies a plus. · Familiarity with front-end web development using HTML, bootstrap, CSS, JavaScript and React. · Working knowledge ...

Senior Developer

Hiring Organisation
University of the Arts London
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£44,375 - £52,977 per annum
Developer and a Junior Developer. Experience Extensive experience of developing websites and web applications using PHP 8+, MySQL, JavaScript, HTML5, CSS3, AJAX/JSON Good working understanding of CMS and frameworks such as Drupal, WordPress, Craft and Laravel Proficiency and application of WCAG 2.2 accessibility guidance Knowledge of microservices, APIs ...

UI Engineer

Hiring Organisation
McCabe & Barton
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 85,000 Annual
integrations from third-party systems using APIs connected to Back Office systems. Build and maintain web applications to support business processes (C#, Razor, ASP.NET, JSON, Redis Cache, Microservices). Technical Skills & Experience 5+ years of professional experience in .NET-based Front End development. 5+ years of hands-on expertise ...

DevOps Engineer (SC cleared)

Hiring Organisation
Lynx Recruitment Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
/CloudFormation) CI/CD pipelines (e.g. Jenkins, Git) Serverless tech (AWS Lambda, API Gateway) Linux systems knowledge Scripting/coding (Python, YAML/JSON) Experience with enterprise systems Strong communication skills ...

DevOps / Cloud Engineer

Hiring Organisation
Lynx Recruitment Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
serverless technologies (e.g. AWS Lambda, API Gateway) Solid knowledge of Linux-based systems Ability to write code/scripts (ideally Python, plus YAML/JSON) Experience working with distributed, enterprise-level systems Strong communication skills and ability to work with stakeholders Additional Desirable Skills Experience with tools such as Ansible ...

DevOps / Cloud Engineer

Hiring Organisation
Lynx Recruitment Ltd
Location
London, UK
serverless technologies (e.g. AWS Lambda, API Gateway) Solid knowledge of Linux-based systems Ability to write code/scripts (ideally Python, plus YAML/JSON) Experience working with distributed, enterprise-level systems xehkeey Strong communication skills and ability to work with stakeholders Additional Desirable Skills Experience with tools such ...

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 ...

Mainframe Engineer

Hiring Organisation
Impellam Group
Location
City of London, London, United Kingdom
CICS webservices, ZOS Connect EE, DB2, and batch processing. Strong skills in mainframe transaction management, JCL, and system debugging tools. Familiarity with SOAP, WSDL, JSON, and integration patterns such as SOA and RESTful APIs. Good working knowledge of AWS services, particularly CloudWatch, DynamoDB, and Lambda, including monitoring, troubleshooting, and optimisation. ...

Senior AI Engineer

Hiring Organisation
Harnham
Location
City of London, London, United Kingdom
first products that deliver measurable value. • Develop and deploy production‐grade AI agents on GCP using ADK, integrating with internal systems via REST and JSON APIs. • Build and maintain robust evaluation and monitoring frameworks, including online and offline testing, A/B experiments and performance dashboards. • Integrate AI agent functionality ...

Head of Software Engineering

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
asset security protocols. Technical Experience: Experience designing/leading a team that is API-forward and has built distributed scalable,systemsusingOpenJDK, Gradle,Intellij,Postgresql, JSON, JUnit, Quartz, JWT, JOOQ, Liquibase, Docker, Kubernetes, AWS Cloud Stack, Confluentand more. Hands-on experience with modern engineering tools and practices (e.g., Kubernetes, microservices ...

Network Automation Engineers

Hiring Organisation
Tech Mahindra
Location
London, United Kingdom
Employment Type
Permanent
Salary
£60000 - £75000/annum
Cisco NSO – Service development and lifecycle Apache Airflow Hasi Corp Vault Openshift Automation development Python Fast API Rest API Netconf Yang modelling XML/Json Jinja/TextFSM Pytest Unit testing Database MongoDB DevOps Docker Git CI/CD Kubernetes Networking Ciena 517x/8180/8114 Nokia BNG/ ...

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 ...

Client Services Manager - Derivatives and Prime Brokerage

Hiring Organisation
CBS Butler
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 55,000 - 70,000 Annual
including task logs, RAID logs, and project trackers. * Support technical integration of client data using APIs, SFTP, and UI tools, handling formats such as JSON, XML, and CSV. * Analyse and debug large, complex datasets, identifying errors and ensuring data integrity. * Test and validate client workflows post-integration, ensuring functionality aligns ...

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 ...

Application, Infrastructure & Service Management, Senior Associate

Hiring Organisation
State Street
Location
London, UK
custody, fund services, settlement, trading, tokenisation, or market infrastructure) Working knowledge of integration architectures relevant to digital assets, including: API‐based integrations (REST/JSON, event‐driven APIs) Messaging and streaming patterns Batch and near‐real‐time data processing Proven ability to produce detailed analysis artefacts, including: Functional ...

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 ...

Head of Engineering

Hiring Organisation
Zeus® | AI-Powered Logistics
Location
London Area, United Kingdom
/S/4HANA patterns), TMS, WMS, carrier/telematics platforms, customer master systems Own integration architecture across: Inbound/outbound APIs (REST/JSON), event-driven messaging (queues/topics), batch feeds, file-based interfaces (S3-based exchanges), structured email fallbacks Demonstrate practical experience with API management and integration ...

PKI Engineer

Hiring Organisation
Lorien
Location
London Area, United Kingdom
OpenSSH, Kubernetes and service mesh certificate architectures (mTLS, SPIFFE/SPIRE style identities). Proficiency with scripting and automation (Python, PowerShell, Bash, Go, JSON) and IaC tools (Azure DevOps, Terraform, Ansible). Experience modernising TLS certificate and SSH key management processes, uplifting protocol versions, and improving trust configurations. Knowledge ...

Senior/Principal Data Modeller

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £90,000 per annum
migrations. Shape and document metadata, lineage, catalogues and source-to-target mapping. Contribute to ETL design and data movement patterns across platforms. Work with JSON, XML, Parquet and other semi-structured formats used across financial systems. Engage senior stakeholders and guide best practice within multidisciplinary teams. Principal level: provide thought ...

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 Analyst, Assistant Vice President

Hiring Organisation
State Street
Location
London, UK
financial services domains (e.g. custody, trading, settlement, tokenisation, market infrastructure) Understanding of integration architectures relevant to digital assets, including: API‐based integrations (REST/JSON, event‐driven APIs) Messaging and streaming patterns Batch and near‐real‐time data processing Proven ability to deliver highly technical analysis artefacts, including: Detailed functional ...

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 ...