6 of 6 Remote/Hybrid JSON Jobs in the City of London

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. ...

Guidewire Integration Lead - £800/day inside - 9 months

Hiring Organisation
Hawksworth
Location
City of London, London, United Kingdom
10+ years of Guidewire Integration development experience Proven experience leading integration teams (PolicyCenter, BillingCenter, ClaimCenter). Java, Gosu; REST/SOAP Web Services; XML, JSON Integration Gateway, Cloud API, Batch/Async processing Agile/Scrum delivery environments and using JIRA. Desirable, but not essential.. Guidewire ACE certified integration specialist ...

GTM Engineer

Hiring Organisation
Loctax
Location
City of London, London, United Kingdom
APIs (Claude, GPT, etc.) programmatically from application code. You will build workers that use AI for classification, scoring, and reasoning — constructing structured prompts, parsing JSON responses, handling errors, and managing the boundary between what the AI decides and what the code enforces. This is not prompt engineering in a chat ...

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 - 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 ...

Configuration Engineer

Hiring Organisation
EXL Service
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
focuses on building and maintaining configuration-driven solutions that power enterprise-grade insurance SaaS platforms. You will translate business and functional requirements into structured JSON and YAML configurations, enabling dynamic forms, workflows and rule engines without heavy custom code. Working closely with business analysts, developers and QA teams, you will … particularly exposure to policy administration, underwriting, claims or insurance workflow systems. As part of your duties, you will be responsible for: Configure and manage JSON and YAML-based configurations for forms, rules and workflows Define dynamic UI forms, field validations and conditional logic using configuration files Implement and maintain business ...