8 of 8 Permanent OpenAPI Jobs in the South East

Senior C# .Net Developer

Hiring Organisation
Advanced Resource Managers Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£500.00 per day
/.NET 8 | ASP.NET Core | REST APIs | SQL Server | Entity Framework | Azure | Azure DevOps | Git | Docker | Kubernetes | Kafka | Redis | JSON/XML | Swagger/OpenAPI Disclaimer: This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited ...

Senior Technical Architect - Custody & Securities Services

Hiring Organisation
Adecco
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£750.00 - £850.00 per day
Domain-driven designs Distributed platforms Experience with Kafka, IBM MQ, Solace or similar messaging technologies. Strong API and integration architecture experience, including REST and OpenAPI standards. Exposure to AWS and modern cloud-native architectures. Experience within architecture governance frameworks and technical review boards. Desirable Experience Knowledge of SWIFT Messaging ...

Java Software Engineer

Hiring Organisation
CGI
Location
Surrey, United Kingdom
Employment Type
Full Time
frameworks such as Jest. •Experience with JUnit and integration testing tools such as ReadyAPI. •Strong working knowledge of Git. •Experience developing RESTful APIs using OpenAPI and JSON. •SQL and PL/SQL experience, including scripts that interrogate Oracle databases. •Experience with CI/CD platforms such as GitLab Runner ...

Software Engineer

Hiring Organisation
Kensington Mortgage Company
Location
Marlow, Buckinghamshire, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
experience, including: C# and modern .NET , including ASP.NET Core Object-oriented development, SOLID principles and dependency injection Designing, building and consuming REST APIs , including OpenAPI Microsoft Azure , particularly PaaS and serverless services Relational databases, SQL and data modelling Git, pull requests and automated CI/CD pipelines , ideally using ...

Fullstack Engineer

Hiring Organisation
Oscar Technology
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £100,000 per annum
interfaces in TypeScript and React, respecting a detailed role-based access model Design services and REST APIs in Python (FastAPI/Django) with clear OpenAPI contracts Model data in PostgreSQL: schema design, migrations, indexing and multi-tenant isolation Build event-driven and background processing, plus real-time features over ...

AI Engineer

Hiring Organisation
Picture More
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £90,000 per annum
internal business systems. Develop intelligent automation workflows using Power Platform, Power Automate and Dataverse. Integrate AI solutions with enterprise applications using REST APIs, OpenAPI, Microsoft Graph and Azure services. Establish best practices for prompt engineering, knowledge grounding, testing and agent lifecycle management. Implement appropriate security, governance, compliance and responsible ...

Software Engineer Consultant

Hiring Organisation
Eden James Consulting Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
We are recruiting for a Software Engineer Consultant on behalf of one of the UK's fastest-growing technology consultancies, ranked in the Financial Times FT1000 Europe's Fastest-Growing Companies list in both 2025 ...

Software Engineer - Space Domain Awareness

Hiring Organisation
GMV
Location
Didcot, Oxfordshire, UK
Employment Type
Full-time
institutional customers, tasks will include: Design, develop and maintain Java micro-services within an agile delivery environment. Develop and evolve RESTful APIs using OpenAPI and JSON.Implement automated tests at different levels to support robust and maintainable software delivery. Contribute to the integration of software components such as databases, workflow … agile projectsProficient in Java. Knowledge of automated testingStrong experience in development and automated testing of Java micro-services. Recent experience developing RESTful APIs using OpenAPI and JSON.Excellent teamworking and communication skills. Pragmatic, adaptable and delivery-focused profile, able to respond to changing requirements and priorities. This role requires ...